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3GPP TS 23.401 V12.3.0 (2013-12)

Technical Specification

3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;

General Packet Radio Service (GPRS) enhancements for volved !niversal Terrestrial Radio Access "et#ork

($!TRA") access(Release %&)

The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP.

The present document has not been subject to any approval process by the 3GPP Orani!ational Partners and shall not be implemented.

This "pecification is provided for future development wor# within 3GPP only. The Orani!ational Partners accept no liability for any use of this

"pecification."pecifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Orani!ational Partners$ Publications Offices.

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%eywordsLTE, GSM, UMTS, GPRS, architecture, stage 2

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+"'te'ts

1ontents....................................................................................................................................................3

7oreword.................................................................................................................................................,,

, "cope....................................................................................................................................................,*

* /eferences............................................................................................................................................,*

3 8efinitions and abbreviations...............................................................................................................,93., 8efinitions............................................................................................................................................................,9

3.* bbreviations.......................................................................................................................................................,:

; rchitecture model and concepts.........................................................................................................,<;., General concepts..................................................................................................................................................,<;.* rchitecture reference model...............................................................................................................................,<

;.*., 'on=roamin architecture.................................................................................................................................,<

;.*.* /oamin architecture........................................................................................................................................,>;.*.3 /eference points................................................................................................................................................*+

;.*.; ?arnin "ystem architecture.......................................................................................................................... ..*,;.3 @ih level functions.............................................................................................................................................*,

;.3., General *,

;.3.* 'etwor# access control functions.....................................................................................................................**;.3.*., General **

;.3.*.* 'etwor#Access networ# selection............................................................................................................... .**;.3.*.3 uthentication and authorisation function.....................................................................................................**

;.3.*.; dmission control function............................................................................................................................**;.3.*.9 Policy and 1harin 2nforcement 7unction............................................................................................. .....**

;.3.*.: 5awful &nterception........................................................................................................................................**;.3.3 Pac#et routin and transfer functions................................................................................................................**

;.3.3., General **;.3.3.* &P header compression function................................................................................................................... ..**

;.3.3.3 Pac#et screenin function..............................................................................................................................**;.3.3.; &P Multicast 7orwardin between a networ# accessed by 5&P and a 2...................................................*3

;.3.; "ecurity functions..............................................................................................................................................*3;.3.9 Mobility manaement functions.......................................................................................................................*3

;.3.9., General *3;.3.9.* /eachability Manaement for 2 in 21M=&852 state.......................................................................... .......*3

;.3.9.3 Trac#in rea list manaement.....................................................................................................................*;;.3.9.; &nter=e'ode0 mobility anchor function....................................................................................................... ..*;

;.3.9.9 &nter=3GPP mobility anchor function.............................................................................................................*;

;.3.9.: &dle mode sinallin reduction function........................................................................................................*;

;.3.9.< Mobility /estrictions......................................................................................................................................*:

;.3.9.> &M" voice over P" "ession "upported &ndication..........................................................................................*<;.3.9.> @omoenous "upport of &M" Boice over P" "essions &ndication.............................................................*<;.3.9.C Boice domain preference and 2$s usae settin..........................................................................................*<

;.3.: /adio /esource Manaement functions............................................................................................................*>;.3.< 'etwor# manaement functions.......................................................................................................................*C

;.3.<., General *C;.3.<.,a GTP=1 sinallin based 5oad and Overload 1ontrol..................................................................................*C

;.3.<.,a., GTP=1 5oad 1ontrol................................................................................................................................ .*C;.3.<.,a.* GTP=1 Overload 1ontrol..........................................................................................................................*C

;.3.<.* 5oad balancin between MM2s.....................................................................................................................3+;.3.<.3 5oad re=balancin between MM2s................................................................................................................3,

;.3.<.; MM2 control of overload...............................................................................................................................3*;.3.<.;., General 3*

;.3.<.;.,a Throttlin of 8ownlin# 8ata 'otification /eDuests.................................................................................33;.3.<.;.* '" level conestion control.....................................................................................................................33

;.3.<.;.*., General 33;.3.<.;.*.* P' based "ession Manaement conestion control............................................................................ ..3;

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;.3.<.;.*.3 P' based Mobility Manaement conestion control............................................................................39;.3.<.;.*.; General '" level Mobility Manaement conestion control................................................................3:

;.3.<.9 P8' G? control of overload........................................................................................................................3:;.3.> "election functions............................................................................................................................................3<

;.3.>., P8' G? selection function (3GPP accesses)...............................................................................................3<;.3.>.* "ervin G? selection function......................................................................................................................3C

;.3.>.3 MM2 selection function.................................................................................................................................3C;.3.>.; "G"' selection function............................................................................................................................... .;+

;.3.>.9 "election of P1/7..........................................................................................................................................;+;.3.C &P networ# related functions.............................................................................................................................;+

;.3.C., 8omain 'ame "ervice function................................................................................................................... ..;+;.3.C.* 8@1P function...............................................................................................................................................;+

;.3.C.3 2plicit 1onestion 'otification....................................................................................................................;+;.3.,+ 7unctionality for 1onnection of e'ode0s to Multiple MM2s.......................................................................;+

;.3.,, 2=T/' "harin 7unction...........................................................................................................................;,

;.3.,* &M" 2merency "ession "upport....................................................................................................................;,;.3.,*., &ntroduction..................................................................................................................................................;,

;.3.,*.* rchitecture /eference Model for 2merency "ervices..............................................................................;*

;.3.,*.3 Mobility and ccess /estrictions for 2merency "ervices.................................................................. .......;*

;.3.,*.3a /eachability Manaement for 2 in 21M=&852 state.............................................................................;3;.3.,*.; P8' G? selection function (3GPP accesses) for 2merency "ervices......................................................;3;.3.,*.9 Eo" for 2merency "ervices.......................................................................................................................;3

;.3.,*.: P11 for 2merency "ervices.......................................................................................................................;3;.3.,*.< 5oad re=balancin between MM2s for 2merency "ervices.......................................................................;;

;.3.,*.> &P ddress llocation..................................................................................................................................;;;.3.,*.C @andlin of P8' 1onnections for 2merency 0earer "ervices.................................................................;;

;.3.,*.,+ &"/ function for 2merency 0earer "ervices......................................................................................... ...;;;.3.,3 1losed "ubscriber Group functions................................................................................................................;;

;.3.,; 5ocation "ervice functions..............................................................................................................................;9;.3.,9 "elected &P Traffic Offload ("&PTO) function.......................................................................................... ......;9

;.3.,9a "elected &P Traffic Offload ("&PTO) at the 5ocal 'etwor#..........................................................................;:;.3.,9a., General.......................................................................................................................................................;:

;.3.,9a.* "&PTO at the 5ocal 'etwor# with stand=alone G? (with "=G? and 5=G? collocated) function...........;:;.3.,9a.3 "&PTO at the 5ocal 'etwor# with 5=G? function collocated with the (@)e'0.......................................;<

;.3.,: 5ocal &P ccess (5&P) function....................................................................................................................;<

;.3.,< "upport for Machine Type 1ommunications (MT1)......................................................................................;>;.3.,<., General ;>

;.3.,<.* Overview of protection from Potential MT1 /elated Overload..................................................................;C

;.3.,<.3 Optimi!in periodic T "inallin...........................................................................................................9+;.3.,<.; 2 confiuration and usae of indicators....................................................................................................9+

;.3.,<.9 Boid 9*;.3.,<.: "upport of 2s confiured for low access priority- 2tended ccess 0arrin and permission for override

.......................................................................................................................................................9*;.3.,> Multimedia Priority "ervice............................................................................................................................9*

;.3.,>., General 9*

;.3.,>.* &M"=based Multimedia Priority "ervices.....................................................................................................93;.3.,>.*., Oriinatin &M"=based MP" "ession........................................................................................................93;.3.,>.*.* Terminatin &M"=based MP" "ession.................................................................................................. ....9;

;.3.,>.3 Priority 2P" 0earer "ervices.......................................................................................................................9;;.3.,>.; 1" fallbac#...................................................................................................................................................9;

;.3.,>.9 'etwor# 1onestion 1ontrols for MP".................................................................................................. .....9;;.3.,>.: 5oad /e=balancin between MM2s for MP"....................................................................................... .......99

;.3.,C 1ore 'etwor# node resolution........................................................................................................................99;.3.,C., General 99

;.3.,C.* M"0 in 51 and MM2 Group &8..............................................................................................................99;.3.,C.3 2plicit &ndication...................................................................................................................................... ..99

;.3.*+ /elayin function............................................................................................................................................99

;.3.*+., General 99;.3.*+.* /' startup and attach procedure..................................................................................................................9:

;.3.*+.*., General 9:

;.3.*+.*.* ttach for /' preconfiuration................................................................................................................9:

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;.3.*+.*.3 ttach for /' operation............................................................................................................................9<;.3.*+.3 8e'0 2=/0 activationAmodification........................................................................................................9>

;.3.*, 1ore 'etwor# assisted e'ode0 parameters tunin.........................................................................................9>;.3.*,., 1' ssistance &nformation........................................................................................................................ ..9>

;.3.*,.* /' Generated ssistance &nformation......................................................................................................9C;.3.*,.3 1ore 'etwor# ssistance Procedures.................................................................................................. ........9C

;.3.** 2 Power "avin Mode..................................................................................................................................9C;.; 'etwor# elements.................................................................................................................................................:+

;.;., 2=T/'.........................................................................................................................................................:+;.;.* MM2 :+

;.;.3 Gateway.............................................................................................................................................................:,;.;.3., General :,

;.;.3.* "ervin G?....................................................................................................................................................:,;.;.3.3 P8' G? :*

;.;.; "G"' :3

;.;.9 G2/'.............................................................................................................................................................:3;.;.: T/'.............................................................................................................................................................:3

;.;.< P1/7 :3

;.;.<., General :3

;.;.<.* @ome P1/7 (@=P1/7)..................................................................................................................................:3;.;.<.3 Bisited P1/7 (B=P1/7)................................................................................................................................:;;.;.> P8' G?$s associated "erver....................................................................................................... .......... .:;

;.;.C @e'0 subsystem.............................................................................................................................................. .:;;.;.,+ 8e'0 :9

;.;.,, 1"G "ubscriber "erver...................................................................................................................................:9;.9 Boid ::

;.: 2P" Mobility Manaement and 1onnection Manaement states........................................................................::;.:., General ::

;.:.* 8efinition of main 2P" Mobility Manaement states......................................................................................::;.:.*., 2MM=82/2G&"T2/28........................................................................................................................ .......::

;.:.*.* 2MM=/2G&"T2/28....................................................................................................................................::;.:.3 8efinition of 2P" 1onnection Manaement states...........................................................................................:<

;.:.3., 21M=&852.....................................................................................................................................................:<;.:.3.* 21M=1O''21T28......................................................................................................................................:>

;.:.; "tate transition and functions............................................................................................................................:>

;.< Overall Eo" concept............................................................................................................................................:C;.<., P8' connectivity service..................................................................................................................................:C

;.<.* The 2P" bearer..................................................................................................................................................:C

;.<.*., The 2P" bearer in eneral..............................................................................................................................:C;.<.*.* The 2P" bearer with GTP=based "9A">........................................................................................................ .<*

;.<.*.3 The 2P" bearer with PM&P=based "9A">................................................................................................ .......<3;.<.3 0earer level Eo" parameters.............................................................................................................................<3

;.<.; "upport for pplication A "ervice 5ayer /ate daptation.............................................................................. ..<;;.<.9 pplication of P11 in the 2volved Pac#et "ystem..........................................................................................<9

;.<.: 0earer 1ontrol Mode in 2P1............................................................................................................................<9

;.> 1ompatibility &ssues.............................................................................................................................................<:;.>., 'etwor# 1onfiuration for &nteraction with T/'AG2/'........................................................................<:

9 7unctional description and information flows......................................................................................<:9., 1ontrol and user planes........................................................................................................................................<:9.,.+ General <:

9.,., 1ontrol Plane.....................................................................................................................................................<:9.,.,., General <:

9.,.,.* e'ode0 = MM2..............................................................................................................................................<<9.,.,.3 2 = MM2......................................................................................................................................................<<

9.,.,.; "G"' = MM2.................................................................................................................................................<>9.,.,.9 "G"' = "=G?............................................................................................................................................... .<>

9.,.,.: "=G? = P=G?............................................................................................................................................... .<C

9.,.,.< MM2 = MM2.................................................................................................................................................<C9.,.,.> MM2 = "=G?.................................................................................................................................................>+9.,.,.C MM2 = @""....................................................................................................................................................>+

9.,.,.,+ MM2 = 2&/..................................................................................................................................................>,

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9.,.,.,, Boid >,9.,.,.,* MM2 = 1""..................................................................................................................................................>,

9.,.* ser Plane.........................................................................................................................................................>*9.,.*., 2 = P=G? user plane with 2=T/'.........................................................................................................>*

9.,.*.* e'ode0 = "=G?........................................................................................................................................... ..>*9.,.*.3 2 = P8' G? user plane with *G access via the "; interface.....................................................................>3

9.,.*.; 2 = P8' G? user plane with 3G access via the ",* interface...................................................................>;9.,.*.9 2 = P8' G? user plane with 3G access via the "; interface.....................................................................>9

9.* &dentities...............................................................................................................................................................>99.*., 2P" bearer identity............................................................................................................................................>9

9.*.* Globally niDue Temporary 2 &dentity.........................................................................................................>99.*.3 Trac#in rea &dentity (T&)............................................................................................................................>:

9.*.; e'ode0 ",=P 2 &dentity (e'ode0 ",=P 2 &8)................................................................................ ......>:9.*.9 MM2 ",=P 2 &dentity (MM2 ",=P 2 &8)..................................................................................... ........>:

9.*.: 1losed "ubscriber Group &8.......................................................................................................................... ...>:

9.3 uthentication- security and location manaement.............................................................................................>:9.3., &P address allocation.........................................................................................................................................>:

9.3.,., General >:

9.3.,.* &P address allocation- renewal and release mechanisms for GTP based "9A">.......................................... ...>C

9.3.,.*., &Pv; address allocation via default bearer activation and release via P8' connection release.................>C9.3.,.*.* llocation- renewal and release of the &Pv: default prefi via &Pv: stateless address autoconfiuration..>C9.3.,.*.3 &Pv: parameter confiuration via stateless 8@1Pv:..................................................................................C+

9.3.,.*.; &Pv; address allocation- renewal and release and &Pv; parameter confiuration via 8@1Pv;..................C+9.3.,.*.9 Boid C+

9.3.,.*.: &Pv: Prefi 8eleation via 8@1Pv:..........................................................................................................C,9.3.* ttach procedure...............................................................................................................................................C,

9.3.*., 2=T/' &nitial ttach.............................................................................................................................. ..C,9.3.*.* T/'AG2/' &nitial ttach.................................................................................................................. .,+*

9.3.3 Trac#in rea pdate procedures..................................................................................................................,+*9.3.3.+ Triers for trac#in area update.................................................................................................................,+*

9.3.3.+ Provision of 2$s T& to MM2 in 21M=1O''21T28 state.................................................................,+;9.3.3., Trac#in rea pdate procedure with "ervin G? chane.......................................................................,+;

9.3.3.* 2=T/' Trac#in rea pdate without "=G? 1hane..........................................................................,,,9.3.3.3 /outin rea pdate with MM2 interaction and without "=G? chane...................................................,,>

9.3.3.; Boid ,*;

9.3.3.9 Boid ,*;9.3.3.: /outin rea pdate with MM2 interaction and with "=G? chane........................................................,*;

9.3.; "ervice /eDuest procedures............................................................................................................................,3,

9.3.;., 2 triered "ervice /eDuest......................................................................................................................,3,9.3.;.* @andlin of abnormal conditions in 2 triered "ervice /eDuest......................................................... ...,33

9.3.;.3 'etwor# Triered "ervice /eDuest.......................................................................................................... ..,3;9.3.9 ", release procedure.......................................................................................................................................,3<

9.3.: Boid ,3C9.3.: PG? Pause of 1harin procedure.............................................................................................................,3C

9.3.< GT& /eallocation procedure.........................................................................................................................,;,

9.3.> 8etach procedure............................................................................................................................................,;,9.3.>., General ,;,9.3.>.* 2=initiated 8etach procedure.....................................................................................................................,;*

9.3.>.*., 2=initiated 8etach procedure for 2=T/'.........................................................................................,;*9.3.>.*.* 2=initiated 8etach procedure for G2/'AT/' with &"/ activated................................................,;3

9.3.>.3 MM2=initiated 8etach procedure................................................................................................................,;99.3.>.3 "G"'=initiated 8etach procedure with &"/ activated............................................................................ ..,;<

9.3.>.; @""=initiated 8etach procedure...................................................................................................................,;>9.3.C @"" ser Profile manaement function procedure................................................................................... .....,9+

9.3.C., General ,9+9.3.C.* &nsert "ubscriber 8ata procedure.................................................................................................................,9+

9.3.C.3 Pure function..............................................................................................................................................,9,

9.3.,+ "ecurity 7unction..........................................................................................................................................,9,9.3.,+., General ,9,

9.3.,+.* uthentication and %ey reement...........................................................................................................,9*

9.3.,+.3 ser &dentity 1onfidentiality......................................................................................................................,9*

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9.3.,+.; ser 8ata and "inallin 1onfidentiality..................................................................................................,9*9.3.,+.;., " security mode command procedure..................................................................................................,9*

9.3.,+.;.* '" "ecurity Mode 1ommand procedure.............................................................................................,9*9.3.,+.9 M2 identity chec# procedure.....................................................................................................................,93

9.3.,, 2 /eachability procedures..........................................................................................................................,939.3.,,., General ,93

9.3.,,.* 2 /eachability 'otification /eDuest procedure................................................................................. .....,939.3.,,.3 2 ctivity 'otification procedure......................................................................................................... ..,9;

9.3.,* pdate 1"G 5ocation Procedure................................................................................................................. .,9;9.3.,3 1"" subscription data manaement function procedure...............................................................................,99

9.3.,3., General ,999.3.,3.* &nsert 1"G "ubscriber 8ata procedure................................................................................................ ......,99

9.3.,; 2 /adio 1apability Match /eDuest............................................................................................................,999.; "ession Manaement- Eo" and interaction with P11 functionality..................................................................,9<

9.;., 8edicated bearer activation.............................................................................................................................,9<

9.;.* 0earer modification with bearer Eo" update..................................................................................................,9C9.;.*., P8' G? initiated bearer modification with bearer Eo" update.................................................................,9C

9.;.*.* @"" &nitiated "ubscribed Eo" Modification...............................................................................................,:,

9.;.3 P8' G? initiated bearer modification without bearer Eo" update...............................................................,:*

9.;.; 0earer deactivation..........................................................................................................................................,:;9.;.;., P8' G? initiated bearer deactivation........................................................................................................,:;9.;.;.* MM2 &nitiated 8edicated 0earer 8eactivation............................................................................................,:<

9.;.9 2 reDuested bearer resource modification................................................................................................ ....,:>9.;.: Boid ,<+

9.9 @andover............................................................................................................................................................,<+9.9., &ntra=2=T/' handover..............................................................................................................................,<,

9.9.,., F*=based handover.......................................................................................................................................,<,9.9.,.,., General ,<,

9.9.,.,.* F*=based handover without "ervin G? relocation................................................................................,<,9.9.,.,.3 F*=based handover with "ervin G? relocation.....................................................................................,<;

9.9.,.* ",=based handover.......................................................................................................................................,<:9.9.,.*., General ,<:

9.9.,.*.* ",=based handover- normal.......................................................................................................................,<<9.9.,.*.3 ",=based handover- /eject...................................................................................................................... ..,>3

9.9.,.*.; ",=based handover- 1ancel.......................................................................................................................,>;

9.9.* &nter /T handover........................................................................................................................................,>;9.9.*.+ General ,>;

9.9.*., 2=T/' to T/' &u mode &nter /T handover..................................................................................,>;

9.9.*.,., General ,>;9.9.*.,.* Preparation phase......................................................................................................................................,>9

9.9.*.,.3 2ecution phase........................................................................................................................................,>>9.9.*.,.; 2=T/' to T/' &u mode &nter /T handover /eject...................................................................,C,

9.9.*.* T/' &u mode to 2=T/' &nter /T handover..................................................................................,C,9.9.*.*., General ,C,

9.9.*.*.* Preparation phase......................................................................................................................................,C*

9.9.*.*.3 2ecution phase........................................................................................................................................,C99.9.*.*.; T/' &u mode to 2=T/' &nter /T handover reject.....................................................................,C>9.9.*.3 2=T/' to G2/' AGb mode &nter /T handover............................................................................,CC

9.9.*.3., General ,CC9.9.*.3.* Preparation phase......................................................................................................................................,CC

9.9.*.3.3 2ecution phase........................................................................................................................................*+39.9.*.3.; 2=T/' to G2/' AGb mode &nter /T handover reject......................................................... ......*+:

9.9.*.; G2/' AGb mode to 2=T/' &nter /T handover............................................................................*+<9.9.*.;., General *+<

9.9.*.;.* Preparation phase......................................................................................................................................*+>9.9.*.;.3 2ecution phase........................................................................................................................................*,,

9.9.*.;.; G2/' AGb mode to 2=T/' &nter /T handover reject......................................................... ......*,3

9.9.*.9 &nter /T handover 1ancel.........................................................................................................................*,;9.9.*.9., General *,;

9.9.*.9.* "ource /' to Taret /' &nter /T handover 1ancel........................................................................*,9

9.: 'etwor# ssisted 1ell 1hane..........................................................................................................................*,:

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9.:., rchitecture Principles for 2=T/' to G2/' '11.............................................................................*,:9.:.* Boid *,<

9.< &nformation storae............................................................................................................................................*,<9.<., @"" *,>

9.<.* MM2 **,9.<.3 "ervin G?.....................................................................................................................................................**9

9.<.; P8' G?....................................................................................................................................................... ..**>9.<.9 2 *3,

9.<.: @andlin of ?ild 1ard P'...........................................................................................................................*3*9.<.< 1"" *3*

9.< 1harin..........................................................................................................................................................*3*9.> M0M"................................................................................................................................................................*33

9.C &nteractions with other services..........................................................................................................................*339.C., 5ocation /eportin Procedure........................................................................................................................*33

9.C.* 5ocation 1hane /eportin Procedure...........................................................................................................*3;

9.C.*., General *3;9.C.*.* /eportin at Presence /eportin rea enterin and leavin.......................................................................*3:

9.,+ Multiple=P8' support......................................................................................................................................*3:

9.,+., General..........................................................................................................................................................*3:

9.,+.* 2 reDuested P8' connectivity...................................................................................................................*3<9.,+.3 2 or MM2 reDuested P8' disconnection.............................................................................................. ....*;*9.,+.; MM2 triered "ervin G? relocation........................................................................................................*;;

9.,, 2 1apability @andlin................................................................................................................................. ..*;:9.,,., General..........................................................................................................................................................*;:

9.,,.* 2 /adio 1apability @andlin.....................................................................................................................*;:9.,,.3 2 1ore 'etwor# 1apability...................................................................................................................... ..*;<

9.,* ?arnin messae delivery...............................................................................................................................*;>9.,*., General..........................................................................................................................................................*;>

9.,*.* Boid *;>9.,*.3 Boid *;>

9.,3 8iscontinuous /eception and 2 "pecific 8/F Parameter handlin.............................................................*;>9.,; 1onfiuration Transfer procedure....................................................................................................................*;C

9.,;., rchitecture Principles for 1onfiuration Transfer......................................................................................*;C9.,;.* ddressin- routin and relayin..................................................................................................................*9+

9.,;.*., ddressin..................................................................................................................................................*9+

9.,;.*.* /outin *9+9.,;.*.3 /elayin.....................................................................................................................................................*9+

9.,;.*.; pplications usin the 1onfiuration Transfer procedures.......................................................................*9+

9.,9 /' &nformation Manaement (/&M) procedures..........................................................................................*9+9.,9., General..........................................................................................................................................................*9+

9.,9.* ddressin- routin and relayin..................................................................................................................*9,9.,9.*., ddressin..................................................................................................................................................*9,

9.,9.*.* /outin *9,9.,9.*.3 /elayin.....................................................................................................................................................*9,

9.,9.3 pplications usin the /&M Procedures.......................................................................................................*9,

9.,: MM2=initiated procedure on 2$s 1"G membership chane.........................................................................*9,9.,< @ome e'ode0 Multicast Pac#et 7orwardin 7unction...................................................................................*9,9.,> @P5M' 'otification with specific indication due to MM2 initiated 0earer removal....................................*9*

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Annex A:

Void.............................................................................................................................253

Annex B:

Void.............................................................................................................................254

Annex C:Void.............................................................................................................................255

Annex D (normative):

Interoperation with Gn/Gp G!"....................................................25#

8., General 1onsiderations..................................................................................................................*9:

8.* &nteroperation "cenario..................................................................................................................*9:8.*., /oamin interoperation scenario...................................................................................................................*9:8.*.* 'on=roamin interoperation scenario.............................................................................................................*9<

8.3 &nteroperation procedures...............................................................................................................*9<8.3., General...........................................................................................................................................................*9<

8.3.* Boid................................................................................................................................................................*9>8.3.3 MM2 to 3G "G"' combined hard handover and "/'" relocation procedure.............................................*9>

8.3.; 3G "G"' to MM2 combined hard handover and "/'" relocation procedure.............................................*:38.3.9 /outin rea pdate......................................................................................................................................*:C

8.3.: GnAGp "G"' to MM2 Trac#in rea pdate..............................................................................................*<;

8.3.< 2=T/' to G2/' AGb mode &nter /T handover........................................................................... ...*>+8.3.<., General........................................................................................................................................................*>+

8.3.<.* Preparation phase........................................................................................................................................*>+

8.3.<.3 2ecution phase...........................................................................................................................................*>38.3.> G2/' AGb mode to 2=T/' &nter /T handover.......................................................................... ....*>9

8.3.>., General........................................................................................................................................................*>98.3.>.* Preparation phase........................................................................................................................................*>:

8.3.>.3 2ecution phase...........................................................................................................................................*>>

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Annex $ (normative):

%appin& 'etween $ and e*ea"e ++ ,o parameter"..................2+-

Annex (normative):

Dediated 'earer ativation in om'ination with the de0a1*t 'earer

ativation at Attah and $ re1e"ted D! onnetivit proed1re"

..............................................................................................................2+4

Annex G:

Void.............................................................................................................................2+

Annex 6 (normative):

%appin& 'etween temporar and area identitie".............................2+7

Annex I (in0ormative):

G1idane 0or ontri'1tor" to thi" "pei0iation.................................2++

Annex 8 (in0ormative):

6i&h 9eve* I de"ription................................................................3

., General description of the &"/ concept...........................................................................................3++

.* sae of the T&'.............................................................................................................................3+,

.3 &"/ activation..................................................................................................................................3+,

.; 8ownlin# data transfer....................................................................................................................3+*

.9 &"/ deactivation..............................................................................................................................3+3

.: @andlin of special situations..........................................................................................................3+3

Annex ; (in0ormative):

Chan&e hi"tor....................................................................................35

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"re"r#

This Technical "pecification has been produced by the 3rd Generation Partnership Project (3GPP).

The contents of the present document are subject to continuin wor# within the T"G and may chane followin formalT"G approval. "hould the T"G modify the contents of the present document- it will be re=released by the T"G with anidentifyin chane of release date and an increase in version number as followsH

Bersion .y.!

whereH

the first diitH

, presented to T"G for informationI

* presented to T"G for approvalI

3 or reater indicates T"G approved document under chane control.

y the second diit is incremented for all chanes of substance- i.e. technical enhancements- corrections- updates- etc.

! the third diit is incremented when editorial only chanes have been incorporated in the document.

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1 Sc"%e

The present document defines the "tae * service description for the 2volved 3GPP Pac#et "witched 8omain = also#nown as the 2volved Pac#et "ystem (2P") in this document. The 2volved 3GPP Pac#et "witched 8omain provides &P

connectivity usin the 2volved niversal Terrestrial /adio ccess 'etwor# (2=T/').

The specification covers both roamin and non=roamin scenarios and covers all aspects- includin mobility between 2=

T/' and pre=2=T/' 3GPP radio access technoloies- policy control and charin- and authentication.

The /adio ccess 'etwor# functionality is documented only to the etent necessary to describe the overall system.

T" 3:.3++ J9K contains the overall description of the 2volved niversal Terrestrial /adio ccess (2=T/) and2volved niversal Terrestrial /adio ccess 'etwor# (2=T/').

&T=T /ecommendation &.,3+ J3K describes a three=stae method for characterisation of telecommunication services-and &T=T /ecommendation E.:9 J;K defines "tae * of the method.

T" *3.;+* J*K is a companion specification to this specification.

2 Reere'ces

The followin documents contain provisions which- throuh reference in this tet- constitute provisions of the present

document.

• /eferences are either specific (identified by date of publication- edition number- version number- etc.) or

non=specific.

• 7or a specific reference- subseDuent revisions do not apply.

• 7or a non=specific reference- the latest version applies. &n the case of a reference to a 3GPP document (includin

a G"M document)- a non=specific reference implicitly refers to the latest version of that document in the same Release as the present document .

J,K 3GPP T/ *,.C+9H LBocabulary for 3GPP "pecificationsL.

J*K 3GPP T" *3.;+*H Lrchitecture enhancements for non=3GPP accessesL.

J3K &T=T /ecommendation &.,3+H LMethod for the characteri!ation of telecommunication services

supported by an &"8' and networ# capabilities of an &"8'L.

J;K &T=T /ecommendation E.:9H LThe unified functional methodoloy for the characteri!ation of

services and networ# capabilitiesL.

J9K 3GPP T" 3:.3++H L2volved niversal Terrestrial /adio ccess (2=T/) and 2volved niversal

Terrestrial /adio ccess 'etwor# (2=T/')I Overall descriptionI "tae *L.

J:K 3GPP T" *3.*+3H LPolicy and charin control architectureL.

J<K 3GPP T" *3.+:+H LGeneral Pac#et /adio "ervice (GP/")I "ervice descriptionI "tae *L.

J>K 3GPP T" ;3.,*CH LPac#et=switched handover for G2/' AGb modeI "tae *L.

JCK 3GPP T" *3.++3H L'umberin- addressin and identificationL.

J,+K 3GPP T" *3.,**H L'on=ccess="tratum ('") functions related to Mobile "tation in idle modeL.

J,,K 3GPP T" ;3.+**H L7unctions related to M" in idle mode and roup receive modeL.

J,*K 3GPP T" *9.3+;H L2 procedures in idle mode and procedures for cell re=selection in connected

modeL.

J,3K 3GPP T" *3.*;:H LMultimedia 0roadcastAMulticast "ervice (M0M")I rchitecture and functional

descriptionL.

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J,;K 3GPP T" *C.+:+H LGP/" Tunnellin Protocol (GTP) across the Gn and Gp interfaceL.

J,9K 3GPP T" ;3.+9,H LG2/' Overall description = "tae *L.

J,:K 3GPP T" *9.;+,H LT/' overall descriptionL.

J,<K &2T7 /71 ,+3; (,C><)H L8omain names concepts and facilitiesL ("T8 ,3).

J,>K &2T7 /71 ;>:*H L&Pv: "tateless ddress utoconfiurationL.

J,CK &2T7 /71 *,3,H L8ynamic @ost 1onfiuration ProtocolL.

J*+K &2T7 /71 3<3:H L"tateless 8ynamic @ost 1onfiuration Protocol (8@1P) "ervice for &Pv:L.

J*,K &2T7 /71 3:33H L&Pv: Prefi Options for 8ynamic @ost 1onfiuration Protocol (8@1P) version

:L.

J**K 3GPP T" *9.;,3H LT/' &u interface /adio ccess 'etwor# pplication Part (/'P)

sinallinL.

J*3K 3GPP T" ;;.+:;H LMobile "tation = "ervin GP/" "upport 'ode (M"="G"')I 5oical 5in#

1ontrol (551) 5ayer "pecificationL.

J*;K 3GPP T" *3.*9,H L'etwor# "harinI rchitecture and functional descriptionL.

J*9K &2T7 /71 ;+3CH L/apid 1ommit Option for the 8ynamic @ost 1onfiuration Protocol version ;(8@1Pv;)L.

J*:K &2T7 /71 <:>H Lser 8ataram ProtocolL.

J*<K 3GPP T" *3.**,H Lrchitectural reDuirementsL.

J*>K 3GPP T" *3.++>H LOrani!ation of subscriber dataL.

J*CK 3GPP T" *3.+<>H L1ustomi!ed pplications for Mobile networ# 2nhanced 5oic (1M25) Phase

FI "tae *L.

J3+K 3GPP T" *3.*3:H L&ntra=domain connection of /adio ccess 'etwor# (/') nodes to multiple

1ore 'etwor# (1') nodesL.

J3,K &2T7 /71 39>>H L8iameter 0ase ProtocolL.

J3*K &2T7 /71 ;>:,H L'eihbor 8iscovery for &P Bersion : (&Pv:)L.

J33K 3GPP T" *9.33,H L/adio /esource 1ontrol (//1)I Protocol "pecificationL.

J3;K 3GPP T" 3:.3+;H L2volved niversal Terrestrial /adio ccess (2=T/)I ser 2Duipment (2) procedures in idle modeL.

J39K &2T7 /71 ;C:+H L"tream 1ontrol Transmission ProtocolL.

J3:K 3GPP T" 3:.;,3H L2volved niversal Terrestrial ccess 'etwor# (2=T/')I ", pplication

Protocol (",P)L.

J3<K 3GPP T" 3:.33,H L2volved niversal Terrestrial /adio ccess (2=T/)I /adio /esource

1ontrol (//1)I Protocol specificationL.

J3>K 3GPP T" *C.+:,H L&nterwor#in between the Public 5and Mobile 'etwor# (P5M') supportin

pac#et based services and Pac#et 8ata 'etwor#s (P8')L.

J3CK Boid.

J;+K 3GPP T" 33.,+*H L3G "ecurityI "ecurity architectureL.

J;,K 3GPP T" 33.;+,H L3GPP "ystem rchitecture 2volutionH "ecurity rchitectureL.

J;*K 3GPP T" ;>.+,>H LGeneral Pac#et /adio "ervice (GP/")I 0ase "tation "ystem (0"") = "ervinGP/" "upport 'ode ("G"')I 0"" GP/" Protocol (0""GP)L.

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J;3K 3GPP T" *C.*<;H L3GPP 2volved Pac#et "ystem (2P")I 2volved General Pac#et /adio "ervice(GP/") Tunnellin Protocol for 1ontrol plane (GTPv*=1)I "tae 3L.

J;;K 3GPP T" 3*.*9,H LTelecommunication manaementI 1harin manaementI Pac#et "witched(P") domain charinL.

J;9K 3GPP T" *;.++<H LMobile radio interface sinallin layer 3I General aspectsL.

J;:K 3GPP T" *;.3+,H L'on=ccess="tratum ('") protocol for 2volved Pac#et "ystem (2P")I

"tae 3L.

J;<K 3GPP T" *;.++>H LMobile /adio &nterface 5ayer 3 specificationI 1ore 'etwor# ProtocolsI

"tae 3L.

J;>K 3GPP T" *3.+;,H LTechnical reali!ation of 1ell 0roadcast "ervice (10")L.

J;CK 3GPP T" **.+;*H L'etwor# &dentity and Time None ('&TN) service descriptionI "tae ,L.

J9+K Boid.

J9,K 3GPP T" 3*.*;+H L1harin architecture and principlesL.

J9*K 3GPP T" *3.**>H L&P Multimedia "ubsystem (&M")I "tae *L.

J93K 3GPP T" *;.*>9H Lllowed 1losed "ubscriber Group (1"G) 5istI Manaement Object (MO)L.

J9;K Boid.

J99K &2T7 /71 3,:>H LThe ddition of 2plicit 1onestion 'otification (21') to &PL.

J9:K 3GPP T" *:.,,;H L&P Multimedia "ubsystem (&M")I Multimedia TelephonyI Media handlin and

interactionL.

J9<K 3GPP T" *3.*<,H L7unctional stae * description of 51"L.

J9>K 3GPP T" *3.*<*H L1ircuit "witched (1") fallbac# in 2volved Pac#et "ystem (2P")I "tae *L.

J9CK 3GPP T" *3.,+<H LEuality of "ervice (Eo") concept and architectureL.

J:+K 3GPP T" *3.*C*H L&P Multimedia "ubsystem (&M") centrali!ed servicesI "tae *L.

J:,K 3GPP T" *C.3+3H L8omain 'ame "ystem ProceduresI "tae 3L.

J:*K &2T7 /71 33<:H L&nternet Group Manaement Protocol- Bersion 3L.

J:3K &2T7 /71 3>,+H LMulticast 5istener 8iscovery Bersion * (M58v*) for &Pv:L.

J:;K &2T7 /71 3C*<H L8ynamic 1onfiuration of &Pv; 5in#=5ocal ddressesL.

J:9K &2T7 /71 ;*C,H L&P Bersion : ddressin rchitectureL.

J::K 3GPP T" **.3:>H L"ervice /eDuirements for Machine=Type 1ommunications (MT1)I "tae ,L.

J:<K 3GPP T" **.+,,H L"ervice ccessibilityL.

J:>K 3GPP T" **.,93H LMultimedia priority serviceL.

J:CK 3GPP T" *;.3:>H L'on=ccess "tratum ('") confiuration Manaement Object (MO)L.

J<+K &2T7 &nternet=8raft draft=ietf=dhc=pd=eclude=+;HLPrefi 2clude Option for 8@1Pv:=basedPrefi 8eleationL.

2ditor$s 'oteHThe above document cannot be formally referenced until it is published as an /71.

J<,K 3GPP T" *3.++*H L'etwor# rchitectureL.

J<*K 3GPP T" *3.++<H L/estoration proceduresL.

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J<3K 3GPP T" **.,<3H L&P Multimedia 1ore 'etwor# "ubsystem (&M") Multimedia Telephony "erviceand supplementary servicesI "tae ,L.

J<;K 3GPP T" *3.:>*H Lrchitecture enhancements to facilitate communications with pac#et datanetwor#s and applicationsL.

3 ei'iti"'s a'# are5iati"'s

3.1 ei'iti"'s

7or the purposes of the present document- the terms and definitions iven in T/ *,.C+9 J,K and the followin apply.

term defined in the present document ta#es precedence over the definition of the same term- if any- in T/ *,.C+9 J,K.

%%$ oo* Area: n MM2 Pool rea is defined as an area within which a 2 may be served without need to chane

the servin MM2. n MM2 Pool rea is served by one or more MM2s (Lpool of MM2sL) in parallel. MM2 Poolreas are a collection of complete Trac#in reas. MM2 Pool reas may overlap each other.

ervin& G< ervie Area: "ervin G? "ervice rea is defined as an area within which a 2 may be servedwithout need to chane the "ervin G?. "ervin G? "ervice rea is served by one or more "ervin G?s in

parallel. "ervin G? "ervice reas are a collection of complete Trac#in reas. "ervin G? "ervice reas mayoverlap each other.

D! Connetion: The association between a 2 represented by one &Pv; address andAor one &Pv: prefi and a P8'

represented by an P'.

De0a1*t Bearer: The 2P" bearer which is first established for a new P8' connection and remains establishedthrouhout the lifetime of the P8' connection.

De0a1*t A!: 8efault P' is defined as the P' which is mar#ed as default in the subscription data and useddurin the ttach procedure and the 2 reDuested P8' connectivity procedure when no P' is provided by the 2.

$mer&en attahed $: 2 which only has bearer(s) related to emerency bearer service.

'OT2H The above term is eDuivalent to the term Lattached for emerency bearer servicesL as specified in

T" *;.3+, J;:K.

9IA D! onnetion: a P8' 1onnection for local &P access for a 2 connected to a @e'0.

I=> at *oa* networ? D! onnetion: a P8' connection for "&PTO at local networ# for a 2 connected to a(@)e'0.

Corre*ation ID: 7or a 5&P P8' connection- 1orrelation &8 is a parameter that enables direct user plane path betweenthe @e'0 and 5=G?.

I=> Corre*ation ID: 7or a "&PTO at local networ# P8' connection- "&PTO 1orrelation &8 is a parameter thatenables direct user plane path between the (@)e'0 and 5=G? when they are collocated.

9oa* 6ome !etwor?: set of (@)e'0s and 5=G?s in the standalone G? architecture- where the (@)e'0s have &Pconnectivity for "&PTO at the 5ocal 'etwor# via all the 5=G?s.

9oa* 6ome !etwor? ID: n identifier that uniDuely identifies a 5ocal @ome 'etwor# within a P5M'.

re"ene eportin& Area: n area defined within 3GPP Pac#et 8omain for the purposes of reportin of 2 presence

within that area due to policy control andAor charin reasons. &n case of 2=T/'- a Presence /eportin rea mayconsist in a set of neihbor or non=neihbor Trac#in reas- or e'0s andAor cells. There are two types of Presence

/eportin reasH L2=dedicated Presence /eportin reasL and L1ore 'etwor# pre=confiured Presence /eportinreasL that apply to an MM2 pool.

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3.2 &re5iati"'s

7or the purposes of the present document- the abbreviations iven in T/ *,.C+9 J,K and the followin apply. n

abbreviation defined in the present document ta#es precedence over the definition of the same abbreviation- if any- in

T/ *,.C+9 J,K.

7 pplication 7unction/P llocation and /etention Priority

M0/ reate Maimum 0it /ate101 1ell 0roadcast 1entre

102 1ell 0roadcast 2ntity1"G 1losed "ubscriber Group

1"G &8 1losed "ubscriber Group &dentity1"" 1"G "ubscriber "erver

8e'0 8onor e'ode 085 T7T 8own5in# Traffic 7low Template

21G& 2=T/' 1ell Global &dentifier 21M 2P" 1onnection Manaement

21' 2plicit 1onestion 'otification

2MM 2P" Mobility Manaemente'0 evolved 'ode 02P1 2volved Pac#et 1ore

2P" 2volved Pac#et "ystem

2=/0 2=T/' /adio ccess 0earer

2=T/' 2volved niversal Terrestrial /adio ccess 'etwor# G0/ Guaranteed 0it /ate

GMM2& Globally niDue MM2 &dentifier GT& Globally niDue Temporary &dentity

G? Gateway@e'0 @ome e'ode 0

@e'0 G? @ome e'ode 0 Gateway@7' @yper 7rame 'umber

&"/ &dle mode "inallin /eductionO1" Online 1harin "ystem

O71" Offline 1harin "ystem50& 5in#ed 2P" 0earer &d

5=G? 5ocal Gate?ay5&P 5ocal &P ccess

M0/ Maimum 0it /ateMM2 Mobility Manaement 2ntity

MM21 MM2 1odeMT1 Machine=Type 1ommunications

M=TM"& M=Temporary Mobile "ubscriber &dentity

OM1=&8 Operation and Maintenance 1entre &dentityP=G? P8' Gateway

P11 Policy and 1harin 1ontrol

P1/7 Policy and 1harin /ules 7unctionP/ Presence /eportin rea

P81P Pac#et 8ata 1onverence ProtocolPM&P Proy Mobile &P

P"P Public "afety nswerin PointP"M Power "avin Mode

PT& Procedure Transaction &dE1& Eo" 1lass &dentifier

/7"P /TA7reDuency "election Priority/' /elay 'ode

"=G? "ervin Gateway"=TM"& "=Temporary Mobile "ubscriber &dentity

"87 "ervice 8ata 7low"&PTO "elected &P Traffic Offload

T1 Trac#in rea 1ode

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T8 Traffic reate 8escriptionT& Trac#in rea &dentity

T Trac#in rea pdateT& Transaction &dentifier

T&' Temporary &dentity used in 'et update//P=MM2 2 /eachability /eDuest Parameter for MM2

5 T7T p5in# Traffic 7low Template5/=7las pdate 5ocation /eDuest 7las

4 &rchitecture 6"#e$ a'# c"'ce%ts

4.1 Ge'era$ c"'ce%ts

5ocal brea#out of &P traffic via the visited P5M' is supported- when networ# policies and user subscription allow it.5ocal brea#out may be combined with support for multiple simultaneous P8' connections- described in clause 9.,+.

4.2 &rchitecture reere'ce 6"#e$

4.2.1 *"'-r"a6i'g architecture

SGi

S12

S3

S1-MME

P+R

G/

Sa

7SS

8%erat"r9s :PSer5ices

(e.g. :MS, PSS etc.)

R/

S10

UE

SGS*

LTE-Uu

$!TRA"

MME

S11

S! Ser5i'g Gatea;

P* Gatea;

S1-U

S4

!TRA"

GRA"

0i1ure '&'%$%2 "on$roamin1 architecture for 3GPP accesses

SGi

S12

S3

S1-MME

P+R

G/

Sa

7SS

8%erat"r9s :PSer5ices

(e.g. :MS, PSS etc.)

R/

S10

UE

SGS*

LTE-Uu

$!TRA"

MME

S11

Ser5i'g Gatea;

P* Gatea;

S1-U

S4

!TRA"

GRA"

0i1ure '&'%$&2 "on$roamin1 architecture for 3GPP accesses' Sin1le 1ate#ay confi1uration option

'OT2 ,H lso in this confiuration option- "9 can be used between non collocated "ervin Gateway and P8'Gateway.

'OT2 *H dditional interfaces for *GA3G access are shown in T" *3.+:+ J<K.

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4.2.2 R"a6i'g architecture

Sa

7SS

S<

S3 S1 - MME

S10

UTR&*

GER&* SGS*

MME

S11

Ser5i'g Gatea;

UE = LTE - Uu >

E - UTR&*

S12

7PLM*

VPLM*

P+R

G/ R/

SGi 8%erat"r?s :PSer5ices

(e.g. :MS, PSS etc.) P*

Gatea;

S 1 - U

S4

0i1ure '&'&$%2 Roamin1 architecture for 3GPP accesses' ome routed traffic

'OT2 ,H dditional interfacesAreference points for *GA3G accesses are documented in T" *3.+:+ J<K.

The fiures ;.*.*=* and ;.*.*=3 represent the /oamin with local brea#out case with pplication 7unction (7) in the@ome 'etwor# and in the Bisited 'etwor# respectively. The concurrent use of 7$s in the home networ# and 7$s in

the visited networ# is not ecluded.

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Sa

7SS

S !

S3 S1 - MME

S10

GER&*

UTR&* S G S*

MME

S11

Ser5i'g G atea; UE

@ LTE - Uu@ E - UTR&*

S4

7PLM*

VPLM*

V - P+R

G/

SGi P*G atea;

S1 - U

7 - P+R

S

7"6e8%erat"r?s :PSer5ices

R/

Visite# 8%er at"rP*

S12

0i1ure '&'&$&2 Roamin1 architecture for local 4reakout5 #ith home operator6s application functionsonly

'OT2 *H "ee T" *3.*+3 J:K for the role of and functions related to @ome and Bisited P1/7 and "CA/ reference

points.

'OT2 3H &n fiure ;.*.*=*- the control plane sinallin and the user plane for accessin to @ome Operator$sservices traverse over the "Gi reference point via the Bisited Operator$s P8'.

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Sa

7SS

S3

S1-MME

S10

!TRA"

SGS*

MME

S11

Ser5i'gGatea;

S!

UE

LTE-Uu

E-UTR&*

S4

7PLM*

VPLM*

V-P+R

G/

SGi P*

Gatea;

S1-U

7-P+R

S

Visite#8%erat"r9s :P

Ser5ices

R/

GRA"

S12

0i1ure '&'&$32 Roamin1 architecture for local 4reakout5 #ith visited operator6s application functionsonly

4.2.3 Reere'ce %"i'ts

-@%%$H/eference point for the control plane protocol between 2=T/' and MM2.

-@H /eference point between 2=T/' and "ervin G? for the per bearer user plane tunnellin and inter

e'ode0 path switchin durin handover.

3H &t enables user and bearer information echane for inter 3GPP access networ# mobility in idle andAor

active state. This reference point can be used intra=P5M' or inter=P5M' (e.. in the case of &nter=P5M'@O).

4H &t provides related control and mobility support between GP/" 1ore and the 3GPP nchor function of"ervin G?. &n addition- if 8irect Tunnel is not established- it provides the user plane tunnellin.

5H &t provides user plane tunnellin and tunnel manaement between "ervin G? and P8' G?. &t is usedfor "ervin G? relocation due to 2 mobility and if the "ervin G? needs to connect to a non=

collocated P8' G? for the reDuired P8' connectivity.

#aH &t enables transfer of subscription and authentication data for authenticatinAauthori!in user access to the

evolved system ( interface) between MM2 and @"".

GxH &t provides transfer of (Eo") policy and charin rules from P1/7 to Policy and 1harin 2nforcement

7unction (P127) in the P8' G?.

7H &nter=P5M' reference point providin user and control plane between the "ervin G? in the BP5M'

and the P8' G? in the @P5M'. "> is the inter P5M' variant of "9.

+H &t provides transfer of (Eo") policy and charin control information between the @ome P1/7 and the

Bisited P1/7 in order to support local brea#out function.

-H /eference point between MM2s for MM2 relocation and MM2 to MM2 information transfer. Thisreference point can be used intra=P5M' or inter=P5M' (e.. in the case of &nter=P5M' @O).

--H /eference point between MM2 and "ervin G?.

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-2H /eference point between T/' and "ervin G? for user plane tunnellin when 8irect Tunnel isestablished. &t is based on the &u=uAGn=u reference point usin the GTP= protocol as defined between

"G"' and T/' or respectively between "G"' and GG"'. sae of ",* is an operator confiurationoption.

-3H &t enables 2 identity chec# procedure between MM2 and 2&/.

Gi: &t is the reference point between the P8' G? and the pac#et data networ#. Pac#et data networ# may bean operator eternal public or private pac#et data networ# or an intra operator pac#et data networ#- e..

for provision of &M" services. This reference point corresponds to Gi for 3GPP accesses.

xH The / reference point resides between the 7 and the P1/7 in the T" *3.*+3 J:K.

'OT2 ,H 2cept where stated otherwise- this specification does not ma#e an eplicit assumption as to whether an

interface is intra=P5M' or inter=P5M'.

?hen data forwardin is used as part of mobility procedures different user plane routes may be used based on the

networ# confiuration (e.. direct or indirect data forwardin). These routes can be between e'ode0 and /'1- e'ode0

and "G"'- /'1 and "=G? or between "=G? and "G"'. 2plicit reference points are not defined for these routes.These user plane forwardin routes can cross inter=P5M' boundaries (e.. in the case of &nter=P5M' @O).

Protocol assumptionH

= The ",= is based on GTP= protocolI

= The "3 is based on GTP protocolI

= The "; is based on GTP protocolI

= The "9 is based on GTP protocol. PM&P variant of "9 is described in T" *3.;+* J*KI

= The "> is based on GTP protocol. PM&P variant of "> is described in T" *3.;+* J*K.

= "3- ";- "9- ">- ",+ and ",, interfaces are desined to manae 2P" bearers as defined in clause ;.<.*.

'OT2 *H /edundancy support on reference points "9 and "> should be ta#en into account.

4.2.4 Aar'i'g S;ste6 architecture

/efer to T" *3.+;, J;>K and T" *3.++* J<,K for the ?arnin "ystem architecture.

4.3 7igh $e5e$ u'cti"'s

4.3.1 Ge'era$

The followin list ives the loical functions performed within this system. "everal functional roupins (metafunctions) are defined and each encompasses a number of individual functionsH

= 'etwor# ccess 1ontrol 7unctions.

= Pac#et /outin and Transfer 7unctions.

= Mobility Manaement 7unctions.

= "ecurity 7unctions.

= /adio /esource Manaement 7unctions.

= 'etwor# Manaement 7unctions.

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4.3.2 *et"rB access c"'tr"$ u'cti"'s

4.3.2.1 Ge'era$

'etwor# access is the means by which a user is connected to the evolved pac#et core system.

4.3.2.2 *et"rB&ccess 'et"rB se$ecti"'

&t is the means by which a 2 selects a P5M'Access networ# from which to ain &P connectivity. The networ#Aaccess

networ# selection procedure varies for different access technoloies. 7or 3GPP access networ#s- the networ# selection principles are described in T" *3.,** J,+K. 7or 3GPP access networ#s- the access networ# selection procedures are

described in T" 3:.3++ J9K- T" ;3.+** J,,K and T" *9.3+; J,*K.

rchitectural impacts stemmin from support for networ#Aaccess networ# selection procedures for non=3GPP access

and between 3GPP access and non=3GPP accesses are described in T" *3.;+* J*K.

4.3.2.3 &uthe'ticati"' a'# auth"risati"' u'cti"'

This function performs the identification and authentication of the service reDuester- and the validation of the servicereDuest type to ensure that the user is authorised to use the particular networ# services. The authentication function is performed in association with the Mobility Manaement functions.

4.3.2.4 &#6issi"' c"'tr"$ u'cti"'

The purpose of admission control is to determine if the reDuested resources are available- and then reserve thoseresources.

4.3.2.! P"$ic; a'# +hargi'g E'"rce6e't u'cti"'

This includes all the functionality of P127 as defined by T" *3.*+3 J:K. The P127 encompasses service data flow

detection- policy enforcement and flow based charin functionalities as defined in T" *3.*+3 J:K.

4.3.2. Lau$ :'terce%ti"'

5awful interception is the action- performed by a networ# operator A access provider A service provider- of ma#inavailable certain information and providin that information to a law enforcement monitorin facility.

4.3.3 PacBet r"uti'g a'# tra'ser u'cti"'s

4.3.3.1 Ge'era$

route is an ordered list of nodes used for the transfer of pac#ets within and between the P5M'(s). 2ach route consists

of the oriinatin node- !ero or more relay nodes and the destination node. /outin is the process of determinin andusin- in accordance with a set of rules- the route for transmission of a messae within and between the P5M'(s).

The 2P" is an &P networ# and uses the standard routin and transport mechanisms of the underlyin &P networ#.

The Maimum Transfer nit (MT) si!e considerations in clause C.3 of T" *3.+:+ J<K are also applicable to 2P".

4.3.3.2 :P hea#er c"6%ressi"' u'cti"'

The &P header compression function optimises use of radio capacity by &P header compression mechanisms.

4.3.3.3 PacBet scree'i'g u'cti"'

The pac#et screenin function provides the networ# with the capability to chec# that the 2 is usin the eact &Pv;=ddress andAor &Pv:=Prefi that was assined to the 2.

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4.3.3.4 :P Mu$ticast "rar#i'g etee' a 'et"rB accesse# ; L:P& a'# a UE

The @ome e'ode0 5=G? should support &P forwardin of pac#ets to multicast roups between the 2 and thenetwor# accessed by 5&P.

4.3.4 Securit; u'cti"'s

The security functions are described in clause 9.3.,+.

4.3.! M"i$it; 6a'age6e't u'cti"'s

4.3.!.1 Ge'era$

The mobility manaement functions are used to #eep trac# of the current location of a 2.

4.3.!.2 Reachai$it; Ma'age6e't "r UE i' E+M-:LE state

The location of a 2 in 21M=&852 state is #nown by the networ# on a Trac#in rea 5ist ranularity. 2 in 21M=&852 state is paed in all cells of the Trac#in reas in which it is currently reistered. The 2 may be reistered in

multiple Trac#in reas. ll the trac#in areas in a Trac#in rea 5ist to which a 2 is reistered are served by thesame servin MM2.

n 2MM=/2G&"T2/28 2 performs periodic Trac#in rea pdates with the networ# after the epiry of the periodic T timer.

The MM2 may allocate lon periodic T timer value to the 2 accordin to clause ;.3.,<.3.

&f the 2 is out of 2=T/' coverae (includin the cases when the 2 is camped on G2/'AT/' cells) whenits periodic T timer epires- the 2 shallH

= if &"/ is activated- start the 2=T/' 8eactivate &"/ timer. fter the 2=T/' 8eactivate &"/ timer epires

the 2 shall deactivate &"/ by settin its T&' to LP=TM"&L.

= if &"/ is activated and the 2 is campin on a G2/'AT/' cell (or returns to coverae in

G2/'AT/') and the 2 is 2P"A&M"& attached- perform a 5 procedure in 'MO && or a combined/A5 update procedure in 'MO &.

= when 2MM=/2G&"T2/28- perform a Trac#in rea pdate when it net returns to 2=T/' coverae.

&f the 2 is camped on an 2=T/' cell or is in 21M=1O''21T28 state when the 2$s periodic / timer

epires- the 2 shallH

= if &"/ is activated- start the G2/'AT/' 8eactivate &"/ timer. fter the G2/'AT/' 8eactivate &"/

timer epires the 2 shall deactivate &"/ by settin its T&' to LGT&L.

= perform a /outin rea pdate when it net returns to G2/'AT/' coverae.

&f the 2 is 2P" attached only and either camps on an 2 T/' cell or is in 21M 1O''21T28 state when the 2$s periodic 5 timer epires- the 2 shall perform a 5ocation rea pdate procedure in 'MO && or combined /A5

update in 'MO & when it net returns to G2/'AT/' coverae.

The 2=T/' 8eactivate &"/ timer is stopped when the 2 performs a successful Trac#in rea pdate or combined

TA5 pdateI and the G2/'AT/' 8eactivate &"/ timer is stopped when the 2 performs a successful /outinrea pdate or combined /A5 pdate.

2piry of the periodic T timer- or- the periodic / timer- or- the periodic 5 timer shall not cause the 2 tochane /T.

The 2$s periodic T timer is restarted from its initial value whenever the 2 enters 21M=&852 mode and when the

2 leaves the 2=T/' connection due to handover to G2/'AT/'. T/' //1 state transitions and G2/'GP/" "T'80A/28 state transitions shall have no other impact on the periodic T timer.

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2=T/' //1 state transitions shall have no impact on the periodic / timer or periodic 5 timer ecept thathandover from G2/'AT/' to 2=T/' shall cause the periodic / timer to be started from its initial value.

@andover from 2 T/' to T/'AG2/' shall cause the periodic T timer to be started from its initial value.

Typically- the MM2 runs a mobile reachable timer. &f MM2 has allocated an ctive Time to the 2- then the MM2

starts the mobile reachable timer with the value of ctive Time. Otherwise- the timer is typically started with a value

similar to the 2$s periodic T timer. &f this timer epires in the MM2- the MM2 can deduce that the 2 is notreachable. @owever- the MM2 does not #now for how lon the 2 is not reachable- so- the MM2 shall not immediately

delete the 2$s bearers. &nstead the MM2 should clear the PP7 fla in the MM2 and start an &mplicit 8etach timer- with

a relatively lare value and if &"/ is activated- at least slihtly larer than the 2$s 2=T/' 8eactivate &"/ timer.dditionally- if the MM2 stores an ctive Time for the 2- the &mplicit 8etach timer value should be also sinificantly

larer than the 2$s periodic TA/ timer. ?ith the PP7 clear- the MM2 does not pae the 2 in 2=T/'coverae and shall send a 8ownlin# 8ata 'otification /eject messae to the "ervin G? when receivin a 8ownlin#

8ata 'otification messae from the "ervin G?. &f this &mplicit 8etach timer epires before the 2 contacts thenetwor#- then the MM2 can deduce that the 2 has been $out of coverae$ for a lon period of time and implicitly

detach the 2 as described in clause 9.3.>.3 LMM2=initiated 8etach procedureL.

?hen the MM2 applies General '" level Mobility Manaement 1onestion 1ontrol to a 2- the MM2 may need to

adjust the mobile reachable timer andAor &mplicit 8etach timer (as clause ;.3.<.;.*.;).

'OT2 ,H The "G"' has similar functionality as the MM2.

'OT2 *H lternative MM2 implementations are permitted- however- the eternally visible MM2 behaviour shouldconform to the above description.

4.3.!.3 TracBi'g &rea $ist 6a'age6e't

Trac#in rea list manaement comprises the functions to allocate and reallocate a Trac#in rea &dentity list to the2. ll the trac#in areas in a Trac#in rea 5ist to which a 2 is reistered are served by the same servin MM2.

The Ltrac#in area list conceptL is used with 2=T/'. ?ith this concept- when the 2 reisters with the networ#- theMM2 allocates a set (a LlistL) of trac#in areas to the 2. 0y ma#in the centre of this set of trac#in areas close to the

2$s current location- the chance of a 2 rapidly ma#in another trac#in area update can be reduced.

&f "&PTO at local networ# with stand=alone G?- "ervin G? relocation without mobility and &"/ are supported in the

core networ# the Trac#in rea list should only contain either Trac#in reas inside one local networ# or inside themacro networ#. &f the trac#in area list covers both local networ# and macro networ#- the &"/ shall not be activated if

the 2 is allowed to use "&PTO at local networ#.

'OT2H This T& list functionality is different to the "G"' behaviour in G2/' and T/' systems. &n

G2/'AT/' the 2 is only reistered in one /outein rea at a time.

4.3.!.4 :'ter-e*"#eC 6"i$it; a'ch"r u'cti"'

The &nter=e'ode0 Mobility nchor is the functional entity that anchors the user plane for 2=T/' mobility.

4.3.!.! :'ter-3GPP 6"i$it; a'ch"r u'cti"'

The &nter=3GPP Mobility nchor is the functional entity that anchors the user plane for mobility between 3GPP *GA3Gaccess systems and the 2=T/ access system.

4.3.!. :#$e 6"#e sig'a$$i'g re#ucti"' u'cti"'

The &dle mode "inallin /eduction (&"/) function provides a mechanism to limit sinallin durin inter=/T cell=reselection in idle mode (21M=&852- PMM=&852- GP/" "T'80 states).

'OT2 ,H The &dle mode "inallin /eduction function is mandatory for 2=T/' 2s that support G2/'

andAor T/' and optional for core networ#. The 2$s &"/ capability in the 2 1ore 'etwor#

1apability element is for test purpose.

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The MM2A"G"' activates &"/ only if the "ervin G? supports the &"/. @ow MM2A"G"' determines a "ervin G?supports &"/ is implementation dependent.

&"/ shall be activated by decision of the 1' nodes and shall be eplicitly sinalled to the 2 as L&"/ activatedL in the/ and T ccept messaes. The 2 may have valid MM parameters both from MM2 and from "G"'. The

LTemporary &dentity used in 'et updateL (T&') is a parameter of the 2$s MM contet- which identifies the 2

identity that the 2 shall indicate in the net / /eDuest- T /eDuest or ttach /eDuest messae. The T&' alsoidentifies the status of &"/ activation in the 2.

The T&' can ta#e one of the three values- LP=TM"&L- LGT&L or L/T=related TM"&L. The 2 shall set the T&' when

receivin an ttach ccept- a T ccept or / ccept messae accordin to the rules in table ;.3.9.:=,.

Ta4le '3'+',$%2 Settin1 of the T7"

8essa1e received 4y ! 9urrent T7" value stored 4y!

T7" value to 4e set 4y the! #hen receivin1 messa1e

&ttach &cce%t 5ia E-UTR&*('e5er i'#icates @:SR &cti5ate#@)

&'; 5a$ue GUT:

&ttach &cce%t 5iaGER&*UTR&*

('e5er i'#icates @:SR &cti5ate#@)

&'; 5a$ue P-TMS:

T&U &cce%t'"t i'#icati'g @:SR &cti5ate#@

&'; 5a$ue GUT:

T&U &cce%ti'#icati'g @:SR &cti5ate#@

GUT:P-TMS: "r R&T-re$ate# TMS:

GUT:R&T-re$ate# TMS:

R&U &cce%t'"t i'#icati'g @:SR &cti5ate#@

&'; 5a$ue P-TMS:

R&U &cce%ti'#icati'g @:SR &cti5ate#@

P-TMS:GUT: "r R&T-re$ate# TMS:

P-TMS:R&T-re$ate# TMS:

?hen L&"/ ctivatedL is indicated by the /AT ccept messae but the 2 shall not set the T&' to L/T=relatedTM"&L is a special situation. @ere the 2 has deactivated &"/ due to special situation handlin. 0y maintainin the old

T&' value the 2 remembers to use the /T specific TM"& indicated by the T&' when updatin with the 1' node of

the other /T.

Only if the T&' is set to L/T=related TM"&L &"/ behaviour is enabled for the 2- i.e. the 2 can chane between allreistered areas and /Ts without any update sinallin and it listens for pain on the /T it is camped on. &f the

T&' is set to L/T=related TM"&L- the 2$s P=TM"& and /& as well as its GT& and T&(s) shall remain reisteredwith the networ# and shall remain valid in the 2.

Ta4le '3'+',$&2 Temporary ! 7dentity that the ! shall indicate in Attach Re:uest and TA!RA!Re:uest (as <old G!T7< or as <old P$T8S7RA7< information element)

8essa1e to 4e sent 4y!

T7" value2 P$T8S7 T7" value2 G!T7 T7" value2 RAT$relatedT8S7

T&U ReDuest GUT: 6a%%e# r"6P-TMS:R&:

GUT: GUT:

R&U ReDuest P-TMS:R&: P-TMS:R&: 6a%%e# r"6GUT:

P-TMS:R&:

&ttach ReDuest 5ia E-UTR&*

GUT: 6a%%e# r"6P-TMS:R&:

GUT: GUT:

&ttach ReDuest 5iaGER&*UTR&*

P-TMS:R&: P-TMS:R&: 6a%%e# r"6GUT:

P-TMS:R&:

Table ;.3.9.:=* shows which temporary identity the 2 shall indicate in a Trac#in or /outin rea pdate /eDuest orin an ttach /eDuest messae- when the 2 stores these as valid parameters.

"ituations may occur that cause unsynchroni!ed state information in the 2- MM2 and "G"'. "uch special situationstrier a deactivation of &"/ locally in the 2.

The 2 shall deactivate &"/ locally by settin its T&' to the temporary identity of the currently used /T in followinspecial situationsH

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= Modification of any 2P" bearer contet or P8P contet which was activated before the &"/ is activated in the2I

= t the time when the 2 moves from 2=T/' to G2/'AT/' or moves from G2/'AT/' to2=T/' by means other than P"@O- if any 2P" bearer contet or P8P contet activated after the &"/ was

activated in the 2 eistsI

= t the time when the 2 moves from G2/'AT/' to 2=T/' by means other than P"@O and 1" to P""/B11- if the P8P contets were suspended in G2/' and not successfully resumed before returnin to

2=T/'I

= fter updatin either MM2 or "G"' about the chane of the 2 specific 8/F parameters to uarantee that theother 1' node is also updatedI

= fter updatin either MM2 or "G"' about the chane of the 2 1ore 'etwor# 1apabilities to uarantee thatthe other 1' node is also updatedI

= 2=T/' selection by a T/'=connected 2 (e.. when in /P1@ to release &u on T/' side)I

= 2=T/' selection from G2/' /28 stateI

= G2/' selection by an 2=T/'=connected 2 via 1ell 1hane Order that is not for 1" fallbac#I

= fter a 5 procedure if the 2 has 1" fallbac# andAor "M" over "Gs activated.

= 7or a 2 that is &M" reistered for voice- then after that 2 moves from a /eistration rea that supports &M"

voice over P" sessions (see ;.3.9.> for more information) to one that does not- and vice versa. &t shall be

possible- e.. usin 8evice Manaement or initial provisonin- to confiure the 2 to applyAnot apply this particular eception.

'OT2 *H 2 movin between /eistration reas that both support &M" voice over P" sessions- or- both that donot support &M" voice over P" sessions- is unaffected by the above.

The 2 shall deactivate &"/ locally by settin its T&' to the temporary identity of the /T that is still available to the

2 in followin special situationsH

= fter the /T=specific 8eactivate &"/ timer epires- e.. because the coverae of that /T is lost or the /T is

no more selected by the 2 (this may result also in implicit detach by "G"' or MM2).

&"/ shall be deactivated in the 2 by the 1' node usin normal update sinallin- i.e. by omittin the sinallin ofL&"/ ctivatedL- in followin special situationsH

= 1' node chane resultin in contet transfer between the same type of 1' nodes ("G"' to "G"' or MM2 toMM2)I

= "ervin G? chaneI

= ?hen the 2 only has bearers related to emerency bearer serviceI

= T or / when 2 moves over the border between local and macro networ# where "&PTO at local networ#with stand=alone G? and "ervin G? relocation without mobility are supported in the core networ#.

&f trac#in area list or routin area covers both local networ# and macro networ#- the &"/ shall not be activated if the2 is allowed to use "&PTO at local networ# and "ervin G? relocation without mobility are supported in the core

networ#.

4.3.!. M"i$it; Restricti"'s

Mobility /estrictions comprises the functions for restrictions to mobility handlin of a 2 in 2=T/' access. The

Mobility /estriction functionality is provided by the 2- the radio access networ# and the core networ#.

Mobility /estriction functionality in state 21M=&852 is eecuted in 2 based on information received from the core

networ#. Mobility /estriction functionality in state 21M=1O''21T28 is eecuted in the radio networ# and the corenetwor#.

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&n state 21M=1O''21T28- the core networ# provides the radio networ# with a @andover /estriction 5ist. The@andover /estriction 5ist specifies roamin- area and access restrictions. &f roamin restriction to G2/' or T/'

access needs to be enforced- a MM2 that is connected to e'0s that may handover or invo#e release with redirection toT/' or G2/' is confiured with a list of @P5M' &8s that are permitted to access G2/' or T/' unless

restricted by the 2 individual access restriction information received from @"".

4.3.!.< :MS 5"ice "5er PS Sessi"' Su%%"rte# :'#icati"'

The servin P5M' shall send an indication toward the 2 durin the ttach procedure and Trac#in rea pdate

procedures if an &M" voice over P" session is supported. The servin P5M' uses this indicator to indicate to the 2whether it can epect a successful &M" voice over P" session accordin to T" **.,<3 J<3K with a bearer that supports

1onversational Boice as specified in T" *3.*+3 J:K. 2 with L&M" voice over P"L voice capability should ta#e thisindication into account when establishin voice over P" sessions (as specified in T" *3.**, J*<K) as well as when

determinin whether to deactivate the special handlin of &"/ locally (as detailed in clause ;.3.9.:).

The servin P5M' provides this indication based e.. on local policy- @P5M'- Boice "upport Match &ndicator- the

"/B11 capability of the networ# and 2 andAor etends of 2=T/'AT/' coverae. The servin P5M' shallindicate to the 2 that the 2 can epect a successful &M" voice over P" session only if the MM2 is confiured to

#now that the servin P5M' has a roamin areement for &M" voice with the @P5M' of the 2. This indication is per

T& list.

On reDuest by the @""- the MM2 shall indicate the followinH

= whether or not an &M" voice over P" "ession is supported in the T(s) that are reistered for the 2 (L&M"

voice over P" "ession "upported &ndicationL)- toether with the time of the last radio contact with the 2I and

= the current /T type.

'OT2H &n order to support routin of incomin &M" voice calls to the correct domain (P" or 1")- the networ#= based T=8" (see T" *3.*C* J:+K and T" *3.**, J*<K) reDuires that there is homoeneous supportAnon=

support of &M" voice over P" session for all reistered Ts of the 2.

4.3.!.<& 7"6"ge'"us Su%%"rt " :MS V"ice "5er PS Sessi"'s :'#icati"'The L@omoenous "upport of &M" Boice over P" "essionsL indication is provided by the MM2 to the @""- and can be

used by the @"" to avoid reDuestin the servin nodes whether or not an &M" Boice over P" session accordin toT" **.,<3 J<3K with a bearer that supports 1onversational Boice as specified in T" *3.*+3 J:K is supported. This

indication is stored in the MM2 MM contet.

The MM2 shall behave as follows whenever it sends a pdate 5ocation /eDuest or a 'otify /eDuest messae to the

@""H

= if L&M" Boice over P" "essionsL is supported homoeneously in all Ts in the servin MM2 for the 2- the

MM2 shall include the L@omoenous "upport of &M" Boice over P" "essionsL indication set to L"upportedL.

= if none of the Ts of the servin MM2 supports L&M" Boice over P" "essionsL for the 2- the MM2 shall

include the L@omoenous "upport of &M" Boice over P" "essionsL indication set to L'ot supportedL.

= if L&M" Boice over P" "essionsL support is either non=homoeneous or un#nown- the MM2 shall not include the

L@omoenous "upport of &M" Boice over P" "essionsL indication.

/eardin homoenous supportAnon=support of &M" Boice over P" session for all reistered Ts of the 2- see

clause ;.3.9.>.

4.3.!. V"ice #"6ai' %reere'ce a'# UE9s usage setti'g

&f the 2 supports 1" fallbac#- or the 2 is confiured to support &M" voice- or both- the 2 shall include the

information element LBoice domain preference and 2$s usae settinL in ttach /eDuest- Trac#in rea pdate/eDuest and /outin rea pdate /eDuest messaes. The purpose of this information element is to sinal to the

networ# the 2$s usae settin and voice domain preference for 2=T/'. The 2$s usae settin indicates whetherthe 2 behaves in a voice centric or data centric way (as defined in T" *3.**, J*<K). The voice domain preference for2=T/' indicates whether the 2 is confiured as 1" Boice only- 1" Boice preferred and &M" P" Boice as

secondary- &M" P" Boice preferred and 1" Boice as secondary- or &M" P" Boice only (as defined in T" *3.**, J*<K).

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'OT2H 8ependin on operator$s confiuration- the 2$s usae settin and voice domain preference for2=T/' can be used by the networ# to choose the /7"P &nde in use (see clause ;.3.:). s an

eample- this enables the enforcement of selective idle mode campin over G2/'AT/' for voicecentric 2s relyin on 1" 7allbac# for voice support in 2=T/'.

4.3. Ra#i" Res"urce Ma'age6e't u'cti"'s

/adio resource manaement functions are concerned with the allocation and maintenance of radio communication paths- and are performed by the radio access networ#. The //M stratey in 2=T/' may be based on user specific

information.

To support radio resource manaement in 2=T/' the MM2 provides the parameter $&nde to /TA7reDuency

"election Priority$ (/7"P &nde) to an e'ode0 across ",. The /7"P &nde is mapped by the e'ode0 to locally definedconfiuration in order to apply specific //M strateies. The /7"P &nde is 2 specific and applies to all the /adio

0earers. 2amples of how this parameter may be used by the 2=T/'H

= to derive 2 specific cell reselection priorities to control idle mode campin.

= to decide on redirectin active mode 2s to different freDuency layers or /Ts.

The MM2 receives the subscribed /7"P &nde from the @"" (e..- durin the ttach procedure). 7or non=roamin

subscribers the MM2 chooses the /7"P &nde in use accordin to one of the followin procedures- dependin onoperator$s confiurationH

= the /7"P &nde in use is identical to the subscribed /7"P &nde- or

= the MM2 chooses the /7"P &nde in use based on the subscribed /7"P &nde- the locally confiured operator$s

policies and the 2 related contet information available at the MM2- includin 2$s usae settin and voicedomain preference for 2=T/'- if received durin ttach and Trac#in rea pdate procedures (see

clause ;.3.9.C).

'OT2H One eample of how the MM2 can use the L2 voice capabilities and settinsL is to select an /7"P value

that enforces idle mode campin on *GA3G for a 2 actin in a LBoice centricL way and provisioned with

L1" Boice preferred- &M" Boice as secondaryL- in order to minimi!e the occurrancy of /T chanes.nother eample is the selection of an /7"P value that prevents idle mode campin on *G for a 2

provisioned with L&M" P" voice preferred- 1" Boice as secondaryL if other /Ts supportin &M" Boiceare available- as the 2 would in such case always select the 1" domain for its voice calls.

7or roamin subscribers the MM2 may alternatively choose the /7"P &nde in use based on the visited networ# policy-

but can ta#e input from the @P5M' into account (e..- an /7"P &nde value pre=confiured per @P5M'- or a sinle/7"P &nde value to be used for all roamers independent of the @P5M').

The MM2 forwards the /7"P &nde in use to the e'ode0 across ",. The /7"P &nde in use is also forwarded fromsource e'ode0 to taret e'ode0 when F* is used for intra=2=T/' handover.

The MM2 stores the subscribed /7"P &nde value received from the @"" and the /7"P &nde value in use. 8urin the

Trac#in rea pdate procedure- the MM2 may update the /7"P &nde value in use (e.. the MM2 may need toupdate the /7"P &nde value in use if the 2 related contet information in the MM2 has chaned). ?hen the /7"P

&nde value in use is chaned- the MM2 immediately provides the updated /7"P &nde value in use to e'ode0 by

modifyin an eistin 2 contet or by establishin an new 2 contet in the e'ode0 or by bein confiured toinclude the updated /7"P &nde value in use in the 8O?'5&'% '" T/'"PO/T messae if the user plane

establishment is not needed. 8urin inter=MM2 mobility procedures- the source MM2 forwards both /7"P &ndevalues to the taret MM2. The taret MM2 may replace the received /7"P &nde value in use with a new /7"P &nde

value in use that is based on the operator$s policies and the 2 related contet information available at the taret MM2.

The ", messaes that transfer the /7"P &nde to the e'ode0 are specified in T" 3:.;,3 J3:K. /efer to T" 3:.3++ J9K

for further information on 2=T/'.

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4.3. *et"rB 6a'age6e't u'cti"'s

4.3..1 Ge'era$

'etwor# manaement functions provide mechanisms to support OQM functions related to the 2volved Pac#et "ystem.

4.3..1a GTP-+ sig'a$$i'g ase# L"a# a'# 85er$"a# +"'tr"$

4.3..1a.1 GTP-+ L"a# +"'tr"$

GTP=1 5oad 1ontrol feature is an optional feature which allows a GTP control plane node to send its 5oad &nformationto a peer GTP control plane node which the receivin GTP control plane peer node uses to aument eistin G?

selection procedure (i.e. as described in LP8' G? "electionL and L"ervin G? "electionL accordin to clauses ;.3.>.,-and ;.3.>.* respectively). 5oad &nformation reflects the operatin status of the resources of the oriinatin GTP control

plane node.

'OT2 ,H @ow a node computes its 5oad &nformation is implementation dependent.

'OT2 *H The eact format of 5oad &nformation is left up to "tae 3.

GTP=1 5oad 1ontrol feature allows the "ervin G? to send its 5oad &nformation to the MM2A"G"'.

GTP=1 5oad 1ontrol feature also allows the P8' G? to send its 5oad &nformation to the MM2A"G"' via a "ervinG?.

pon receivin 5oad &nformation the MM2A"G"' supportin GTP=1 5oad 1ontrol feature uses it accordin to

clauses ;.3.>.,- and ;.3.>.* for LP8' G? "electionL and L"ervin G? "electionL respectively.

node supportin GTP=1 5oad 1ontrol feature sends 5oad &nformation in any GTP control plane reDuest or responsemessae such that echane of 5oad &nformation does not trier etra sinallin.

node supportin GTP=1 5oad 1ontrol feature sends 5oad &nformation to a peer GTP control node based on whether

local confiuration allows for it.

'OT2 3H ?hether eplicit neotiation of GTP=1 5oad 1ontrol feature is reDuired is left up to "tae 3.

node supportin GTP=1 5oad 1ontrol feature may decide to send different values of 5oad &nformation on inter=

networ# (roamin) and on intra=networ# (non=roamin) interfaces based on local confiuration.

5ocal confiuration may allow the BP5M' to decide whether or not to act upon 5oad &nformation sent from a peer

GTP control plane node in the @P5M'.

4.3..1a.2 GTP-+ 85er$"a# +"'tr"$

GTP=1 Overload 1ontrol feature is an optional feature. 'odes usin GTP control plane sinallin may support

communication of Overload control &nformation in order to mitiate overload situation for the overloaded node throuh

actions ta#en by the peer node(s). This feature is supported over ";- ",,- "9 and "> interfaces via GTPv* control plane protocol.

GTP=1 node is considered to be in overload when it is operatin over its nominal capacity resultin in diminished performance (includin impacts to handlin of incomin and outoin traffic). Overload control &nformation reflects an

indication of when the oriinatin node has reached such situation. This information- when transmitted between GTP=1nodes may be used to reduce andAor throttle the amount of GTP=1 sinallin traffic between these nodes. s such- the

Overload control &nformation provides uidance to the receivin node to decide actions which leads to mitiationtowards the sender of the information.

'OT2 ,H @ow a node determines its Overload control &nformation is outside of the scope of specification.

The Overload control &nformation may convey information reardin the node itself andAor reardin specific P'(s)

status. &n order to mitiate overload-

= it shall be possible to sinal control information about the overload of a GTP=1 node (e.. "=G?- P=G?)I

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= the P8' G? may detect overload for certain P's- e.. based on 8iameter overload indication received from aP1/7 or from an eternal server- or e.. based on shortae of resources for an P' (&P address pool). &t

shall be possible to sinal appropriate control information about the P' status in addition to the mechanismdescribed in clause ;.3.<.9.

'OT2 *H The eact format of Overload control &nformation is left up to "tae 3.

'OT2 3H "tae 3 is responsible definin 5oadAOverload related information echaned between GTP=1 nodes withenouh precision to uarantee a common interpretation of this information allowin inter=operability

between various GTP=1 nodes.

GTP=1 Overload 1ontrol feature allows the MM2A"G"' to send its Overload control &nformation to the "ervin G?and to the P8' G? via "ervin G?.

GTP=1 Overload 1ontrol feature allows the "ervin G? to send its Overload control &nformation to the MM2A"G"'.

GTP=1 Overload 1ontrol feature also allows the P8' G? to send its Overload control &nformation to the MM2A"G"'

via a "ervin G?.

GTP=1 overload 1ontrol feature should continue to allow for preferential treatment of priority users (eMP") and

emerency services as per eistin specifications.

n MM2A"G"' may durin 2"M and 2MM procedures apply certain restrictions towards G?s ("ervin G? andAor

P8' G? as applicable) that have indicated overload- e..H

= reject 2P" "ession Manaement reDuests from the 2 (e.. P8' 1onnectivity- 0earer /esource llocation or

0earer /esource Modification /eDuests) with a "ession Manaement bac#=off timer as described inclause ;.3.<.;.*I

= reject Mobility Manaement sinallin reDuests from 2s (such as ttach- 8etach- "ervice /eDuest- Trac#inrea pdate) with a Mobility Manaement bac#=off timer (e.. reject "ervice /eDuest reDuirin to activate user

plane bearers in an overloaded "G?) as described in clause ;.3.<.;.*I

= may reduceAthrottle messaes towards the G?s indicatin overload statusI

= other implementation specific mechanisms- which are outside the scope of 3GPP specifications.

P8' G? may ta#e the followin actions for MM2A"G"' which have indicated overloadH

= 5imit or completely bloc# non=G0/ dedicated bearer establishmentI

= 5imit or completely bloc# all 8edicated 0earer establishments or modification- ecept E1&R, bearersI

= 5imit or completely bloc# all 8edicated 0earer establishments- includin the E1&R, bearersI

= other implementation specific mechanisms- which are outside the scope of 3GPP specifications.

node supportin GTP=1 Overload 1ontrol feature sends Overload control &nformation in any GTP control planereDuest or response messae such that echane of Overload control &nformation does not trier etra sinallin.

The computation and transfer of the Overload control &nformation shall not add sinificant additional load to the nodeitself and to its correspondin peer nodes. The calculation of Overload control &nformation should not severely impact

the resource utili!ation of the node.

0ased on local policiesAconfiuration- a GTP=1 node may support Overload 1ontrol feature and act upon or inore

Overload control &nformation in the BP5M' when received from @P5M' and in the @P5M' when received fromBP5M'. ?hen this feature is supported- a GTP=1 node may decide to send different values of Overload control

&nformation on inter=networ# (roamin) and on intra=networ# (non=roamin) interfaces based on local policiesAconfiuration.

4.3..2 L"a# a$a'ci'g etee' MMEs

The MM2 5oad 0alancin functionality permits 2s that are enterin into an MM2 Pool rea to be directed to anappropriate MM2 in a manner that achieves load balancin between MM2s. This is achieved by settin a ?eiht 7actor

for each MM2- such that the probability of the e'ode0 selectin an MM2 is proportional to its ?eiht 7actor. The

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?eiht 7actor is typically set accordin to the capacity of an MM2 node relative to other MM2 nodes. The ?eiht7actor is sent from the MM2 to the e'ode0 via ",=P messaes (see T" 3:.;,3 J3:K). &f a @e'0 G? is deployed- the

?eiht 7actor is sent from the MM2 to the @e'0 G?.

'OT2 ,H n operator may decide to chane the ?eiht 7actor after the establishment of ",=MM2 connectivity as

a result of chanes in the MM2 capacities. 2..- a newly installed MM2 may be iven a very much hiher

?eiht 7actor for an initial period of time ma#in it faster to increase its load.

'OT2 *H &t is intended that the ?eiht 7actor is 'OT chaned freDuently. e.. in a mature networ#- chanes on a

monthly basis could be anticipated- e.. due to the addition of /' or 1' nodes.

&n some networ#s- the e'ode0 may be confiured to select specific MM2 for 2s confiured for low access prioritywith a different load balance to that used for MM2 selection for other 2s.

'OT2 3H The e'ode0 can determine whether or not the L2 is confiured for low access priorityL frominformation received in the //1 establishment sinallin.

4.3..3 L"a# re-a$a'ci'g etee' MMEs

The MM2 5oad /e=balancin functionality permits 2s that are reistered on an MM2 (within an MM2 Pool rea) to be moved to another MM2.

'OT2 ,H n eample use for the MM2 5oad /e=balancin function is for the OSM related removal of one MM2from an MM2 Pool rea.

'OT2 *H Typically- this procedure should not be used when the MM2 becomes overloaded because the 5oad0alancin function should have ensured that the other MM2s in the pool area are similarly overloaded.

The e'ode0s may have their 5oad 0alancin parameters adjusted beforehand (e.. the ?eiht 7actor is set to !ero if allsubscribers are to be removed from the MM2- which will route new entrants to the pool area into other MM2s).

&n addition the MM2 may off=load a cross=section of its subscribers with minimal impacts on the networ# and users(e.. the MM2 should avoid offloadin only the low activity users while retainin the hih activity subscribers. Gradual

rather than sudden off=loadin should be performed as a sudden re=balance of lare number of subscribers couldoverload other MM2s in the pool. ?ith minimal impact on networ# and the user$s eperience- the subscribers should be

off=loaded as soon as possible). The load re=balancin can off=load part of or all the subscribers.

To off=load 21M=1O''21T28 mode 2s- the MM2 initiates the ", /elease procedure with release cause Lload balancin T reDuiredL (clause 9.3.9). The ", and //1 connections are released and the 2 initiates a T but

provides neither the "=TM"& nor the GMM2& to e'ode0 in the //1 establishment.

'OT2 3H "pecial care needs to be ta#en when offloadin /elay 'odes. This is because there may be 2sconnected to the /' and some of these 2s may be reistered on other MM2s.

The MM2 should not release all ", connections which are selected to be released immediately when offloadin isinitiated. The MM2 may wait until the ", /elease is performed due to inactivity. ?hen the MM2 is to be offloaded

completely the MM2 can enforce an ", /elease for all remainin 2s that were not offloaded by normal T

procedures or by ", releases caused by inactivity.

To off=load 2s which perform T pdates or ttaches initiated in 21M=&852 mode- the MM2 completes that

procedure and the procedure ends with the MM2 releasin ", with release cause Lload balancin T reDuiredL. The

", and //1 connections are released and the 2 initiates a T but provides neither the "=TM"& nor the GMM2& toe'ode0 in the //1 establishment.

?hen the 2 provides neither the "=TM"& nor the GMM2& in the //1 establishment- the e'ode0 should select anMM2 based on the ?eiht 7actors of the MM2s in the pool.

To off=load 2s in 21M=&852 state without waitin for the 2 to perform a T or perform "ervice reDuest and become 21M=1O''21T28- the MM2 first paes 2 to brin it to 21M=1O''21T28 state. &f pain the 2 fails

and &"/ is activated- the MM2 should adjust its pain retransmission stratey (e.. limit the number of short spacedretransmissions) to ta#e into account the fact that the 2 miht be in G2/'AT/' coverae.

@ardware andAor software failures within an MM2 may reduce the MM2$s load handlin capability. Typically suchfailures should result in alarms which alert the operatorAOSM system. Only if the operatorAOSM system is sure that

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there is spare capacity in the rest of the pool- the operatorAOSM system miht use the load re=balancin procedure tomove some load off this MM2. @owever- etreme care is needed to ensure that this load re=balancin does not overload

other MM2s within the pool area (or neihbourin "G"'s) as this miht lead to a much wider system failure.

4.3..4 MME c"'tr"$ " "5er$"a#

4.3..4.1 Ge'era$

The MM2 shall contain mechanisms for avoidin and handlin overload situations. These can include the use of '"

sinallin to reject '" reDuests from 2s.

&n addition- under unusual circumstances- the MM2 shall restrict the load that its e'ode0s are eneratin on it if it isconfiured to enable the overload restriction. This can be achieved by the MM2 invo#in the ", interface overload

procedure (see T" 3:.3++ J9K and T" 3:.;,3 J3:K) to all or to a proportion of the e'ode0$s with which the MM2 has ",interface connections. To reflect the amount of load that the MM2 wishes to reduce- the MM2 can adjust the proportion

of e'ode0s which are sent ", interface OB2/5O8 "T/T messae- and the content of the OB2/5O8 "T/Tmessae.

The MM2 should select the e'ode0s at random (so that if two MM2s within a pool area are overloaded- they do not

both send OB2/5O8 "T/T messaes to eactly the same set of e'ode0s).

The MM2 may optionally include a Traffic 5oad /eduction &ndication in the OB2/5O8 "T/T messae. &n thiscase the e'ode0 shall- if supported- reduce the type of traffic indicated accordin the reDuested percentae (see

T" 3:.;,3 J3:K).

'OT2 ,H The MM2 implementation may need to ta#e into account the fact that e'ode0s compliant to /elease C

and earlier version of the specifications do not support the percentae overload indication.

sin the OB2/5O8 "T/T messae- the MM2 can reDuest the e'ode0 toH

= reject //1 connection reDuests that are for non=emerency and non=hih priority mobile oriinated servicesI or

'OT2 *H This bloc#s P" service and service provided by M"1 followin an 2P"A&M"& attach procedure.

= reject new //1 connection reDuests for 2P" Mobility Manaement sinallin (e.. for T pdates) for thatMM2I or

= only permit //1 connection reDuests for emerency sessions and mobile terminated services for that MM2.

This bloc#s emerency session reDuests from 2s with "&Ms provisioned with ccess 1lasses ,, and ,9 whenthey are in their @P5M'A2@P5M' and from 2s with "&Ms provisioned with ccess 1lasses ,*- ,3 and ,;

when they are in their home country (defined as the M11 part of the &M"&- see T" **.+,, J:<K)I or.

'OT2 3H The MM2 can restrict the number of responses to pain by not sendin pain messaes for a proportion of the events that initiate pain. s part of this process- the MM2 can provide preference for

pain 2s with 2merency 0earer "ervices and terminations associated with MP" /P.

= only permit //1 connection reDuests for hih priority sessions and mobile terminated services for that MM2.

= reject new //1 connection reDuests from 2s that access the networ# with low access priority.

?hen rejectin an //1 connection reDuest for overload reasons the e'ode0 indicates to the 2 an appropriate timer

value that limits further //1 connection reDuests for a while.

n e'ode0 supports rejectin of //1 connection establishments for certain 2s as specified in T" 3:.33, J3<K.

dditionally- an e'ode0 provides support for the barrin of 2s confiured for 2tended ccess 0arrin- as describedin T" **.+,, J:<K. These mechanisms are further specified in T" 3:.33, J3<K.

n e'ode0 may initiate 2tended ccess 0arrin whenH

= all the MM2s connected to this e'0 reDuest to restrict the load for 2s that access the networ# with low access

priorityI or

= reDuested by OQM.

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&f an MM2 invo#es the ", interface overload procedure to restrict the load for 2s that access the networ# with lowaccess priority- the MM2 should select all e'ode0s with which the MM2 has ", interface connections. lternatively-

the selected e'ode0s may be limited to a subset of the e'ode0s with which the MM2 has ", interface connection (e.. particular location area or where devices of the tareted type are reistered).

8urin an overload situation the MM2 should attempt to maintain support for emerency bearer services (see

clause ;.3.,*) and for MP" (see clause ;.3.,>).

?hen the MM2 is recoverin- the MM2 can eitherH

= send OB2/5O8 "T/T messaes with new percentae value that permit more traffic to be carried- or

= the MM2 sends OB2/5O8 "TOP messaes.

to some- or all- of the e'ode0(s).

&n addition- to protect the networ# from overload the MM2 has the option of rejectin '" reDuest messaes whichinclude the low access priority indicator before rejectin '" reDuest messaes without the low access priority

indicator (see clause ;.3.<.;.* for more information).

'OT2 ;H &t cannot be uaranteed that voice services will be available for mobile terminated calls while the

Mobility Manaement bac#=off timer is runnin. &t is recommended- that 2s reDuirin voice services arenot confiured for low access priority.

4.3..4.1a Thr"tt$i'g " "'$i'B ata *"tiicati"' ReDuests

nder unusual circumstances (e.. when the MM2 load eceeds an operator confiured threshold)- the MM2 may

restrict the sinallin load that its "G?s are eneratin on it- if confiured to do so.

The MM2 can reject 8ownlin# 8ata 'otification reDuests for low priority traffic for 2s in idle mode or to further

offload the MM2- the MM2 can reDuest the "G?s to selectively reduce the number of 8ownlin# 8ata 'otificationreDuests it sends for downlin# low priority traffic received for 2s in idle mode accordin to a throttlin factor and for

a throttlin delay specified in the 8ownlin# 8ata 'otification c# messae.

The "G? determines whether a bearer is for low priority traffic or not on the basis of the bearer$s /P priority leveland operator policy (i.e. operator$s confiuration in the "G? of the /P priority levels to be considered as priority ornon= priority traffic). The MM2 determines whether a 8ownlin# 8ata 'otification reDuest is for low priority traffic or

not on the basis of the /P priority level that was received from the "G? and operator policy.

&f &"/ is not active for the 2- durin the throttlin delay- the "G? drops downlin# pac#ets received on all its low priority bearers for 2s #nown as not user plane connected (i.e. the "G? contet data indicates no downlin# user plane

T2&8) served by that MM2 in proportion to the throttlin factor- and sends a 8ownlin# 8ata 'otification messae to

the MM2 only for the non throttled bearers.

&f &"/ is active for the 2- durin the throttlin delay- the "G? does not send 88' to the MM2 and only sends the

88' to the "G"'. &f both MM2 and "G"' are reDuestin load reduction- the "G? drops downlin# pac#ets receivedon all its low priority bearers for 2s #nown as not user plane connected (i.e. the "G? contet data indicates no

downlin# user plane T2&8) in proportion to the throttlin factors.

The "G? resumes normal operations at the epiry of the throttlin delay. The last received value of the throttlin factor

and throttlin delay supersedes any previous values received from that MM2. The reception of a throttlin delay restartsthe "G? timer associated with that MM2.

4.3..4.2 *&S $e5e$ c"'gesti"' c"'tr"$

4.3..4.2.1 Ge'era$

'" level conestion control contains the functionsH LP' based conestion controlL and LGeneral '" level Mobility

Manaement controlL.

The use of the P' based conestion control is for avoidin and handlin of 2MM and 2"M sinallin conestionassociated with 2s with a particular P'. 0oth 2s and networ# shall support the functions to provide P' based2MM and 2"M conestion control.

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The MM2 may detect the '" sinallin conestion associated with the P' and start and stop performin the P' based conestion control based on criteria such asH

= Maimum number of active 2P" bearers per P'II

= Maimum rate of 2P" 0earer activations per P'II

= One or multiple P8' G?s of an P' are not reachable or indicated conestion to the MM2I

= Maimum rate of MM sinallin reDuests associated with the devices with a particular subscribed P'I andAor

= "ettin in networ# manaement.

The MM2 should not apply '" level conestion control for hih priority access and emerency services.

?ith General '" level Mobility Manaement control- the MM2 may also use the reject of '" level MobilityManaement sinallin reDuests under eneral conestion conditions.

4.3..4.2.2 &P* ase# Sessi"' Ma'age6e't c"'gesti"' c"'tr"$

The P' based "ession Manaement conestion control may be activated by MM2 due to e.. conestion situation atMM2- or by OM at MM2- or by a restart or recovery condition of a P8' G?- or by a partial failure or recovery of a

P8' G? for a particular P'(s).

The MM2 may reject the 2P" "ession Manaement (2"M) reDuests from the 2 (e.. P8' 1onnectivity- 0earer

/esource llocation or 0earer /esource Modification /eDuests) with a "ession Manaement bac#=off timer when 2"Mconestion associated with the P' is detected. &f the 2 provides no P'- then the MM2 uses the P' which is used

in P8' G? selection procedure.

The MM2 may deactivate P8' connections belonin to a conested P' by sendin the '" 8eactivate 2P" 0earer

1ontet /eDuest messae to the 2 with a "ession Manaement bac#=off timer. &f "ession Manaement bac#=off timeris set in the '" 8eactivate 2P" 0earer 1ontet /eDuest messae then the cause Lreactivation reDuestedL should not be

set.

'OT2 ,H 2s that don$t support the "ession Manaement bac#=off timer (includin earlier release of 2) mihtcontribute to increasin the sinallin load in the MM2 by reattemptin "ession Manaement procedure.

The MM2 may store a "ession Manaement bac#=off time per 2 and P' when conestion control is active for an

P' if a reDuest without the low access priority indicator is rejected by the MM2. The MM2 may immediately reject

any subseDuent reDuest from the 2 taretin to the P' before the stored "ession Manaement bac#=off time isepired. &f the MM2 stores the "ession Manaement bac#=off time per 2 and P' and the MM2 decides to send a

"ession Manaement /eDuest messae to a 2 connected to the conested P' (e.. due to decreased conestion

situation)- the MM2 shall clear the "ession Manaement bac#=off time prior to sendin any "ession Manaement/eDuest messae to the 2.

'OT2 *H The above functionality is to diminish the performance advantae for 2s that do not support the '"level bac#=off timer (e.. pre=/el=,+ 2s) compared to 2s that do support it.

pon reception of the "ession Manaement bac#=off timer in the 2P" "ession Manaement reject messae or in the '" 8eactivate 2P" 0earer 1ontet /eDuest messae- the 2 shall ta#e the followin actions until the timer epiresH

= &f P' is provided in the rejected 2P" "ession Manaement /eDuest messae or if the "ession Manaement

bac#=off timer is received in the '" 8eactivate 2P" 0earer 1ontet /eDuest messae- the 2 shall not initiate

any "ession Manaement procedures for the conested P'. The 2 may inititate "ession Manaement procedures for other P's.

= &f P' is not provided in the rejected 2P" "ession Manaement /eDuest messae- the 2 shall not initiate any"ession Manaement reDuests without P'. The 2 may initiate "ession Manaement procedures for specific

P'.

= 1ellATAP5M'A/T chane do not stop the "ession Maement bac#=off timer.

= The 2 is allowed to initiate the "ession Manaement procedures for hih priority access and emerencyservices even when the "ession Manaement bac#=off timer is runnin.

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= &f the 2 receives a networ# initiated 2P" "ession Manaement /eDuest messae for the conested P' whilethe "ession Manaement bac#=off timer is runnin- the 2 shall stop the "ession Manaement bac#=off timer

associated with this P' and respond to the MM2.

= &f the 2 is confiured with a permission for overridin low access priority and the "ession Manaement bac#=

off timer is runnin due to a reject messae received in response to a reDuest with low access priority- the upper

layers in the 2 may reDuest the initiation of "ession Manaement procedures without low access priority.

The 2 is allowed to initiate P8' disconnection procedure (e.. sendin P8' 8isconnection /eDuest) when the 2P"

"ession Manaement bac# off timer is runnin.

'OT2 3H The 2 does not delete the related "ession Manaement bac#=off timer when disconnectin a P8'connection.

The 2 shall support a separate "ession Manaement bac#=off timer for every P' that the 2 may activate.

To avoid that lare amounts of 2s initiate deferred reDuests (almost) simultaneously- the MM2 should select the

"ession Manaement bac#=off timer value so that deferred reDuests are not synchroni!ed.

The P' based "ession Manaement conestion control is applicable to the '" 2"M sinallin initiated from the 2

in the control plane. The "ession Manaement conestion control does not prevent the 2 to send and receive data orinitiate "ervice /eDuest procedures for activatin user plane bearers towards the P'(s) that are under 2"M conestion

control.

4.3..4.2.3 &P* ase# M"i$it; Ma'age6e't c"'gesti"' c"'tr"$

The MM2 may perform the P' based conestion control for 2s with a particular subscribed P' by rejectin

ttach procedures with a Mobility Manaement bac#=off timer.

?hen conestion control is active for 2s with a particular subscribed P'- a Mobility Manaement bac#=off timer

may be sent by the MM2 to 2.

&f MM2 maintains the 2 contet- the MM2 may store the bac#=off time per 2 if a reDuest without the low access

priority indicator is rejected by the MM2. The MM2 may immediately reject any subseDuent reDuest from the 2 before the stored bac#=off time is epired.

'OT2 ,H The above functionality is to diminish the performance advantae for 2s that do not support the '"level bac#=off timer (e.. pre=/el=,+ 2s) compared to 2s that do support it.

fter rejectin ttach /eDuests- the MM2 should #eep the "ubscriber 8ata for some time. This allows for rejection ofsubseDuent reDuests without @"" sinallin when the conestion situation resultin from 2s with a particular

subscribed P' persists.

'OT2 *H Prior to the reject of attach messaes of a 2 by the MM2- "ubscriber 8ata for a 2 may be present at

the MM2 because it was not deleted after the 2$s detach. &n this case when P' based conestioncontrol is active for a particular P' in the MM2- the first reject of an attach messae by the MM2 for

this 2- may be done without @"" sinalin as well.

?hile the Mobility Manaement bac#=off timer is runnin- the 2 shall not initiate any '" reDuest for Mobility

Manaement procedures. @owever- the 2 is allowed to initiate the Mobility Manaement procedures for hih priorityaccess and emerency services even when the Mobility Manaement bac#=off timer is runnin. ?hile the Mobility

Manaement bac#=off timer is runnin- the 2 is allowed to perform Trac#in rea pdate if it is already in connectedmode.

?hile the Mobility Manaement bac#=off timer is runnin- the 2 confiured with a permission for overridin low

access priority is allowed to initiate the Mobility Manaement procedures without low access priority if the Mobility

Manaement bac#=off timer was started due to a reject messae received in response to a reDuest with low access priority and the upper layers in the 2 reDuest to activate a P8' connection without low access priority or the 2 has

an activated P8' connection that is not with low access priority.

To avoid that lare amounts of 2s initiate deferred reDuests (almost) simultaneously- the MM2 should select the

Mobility Manaement bac#=off timer value so that deferred reDuests are not synchroni!ed.

'OT2 3H ?hen receivin the Mobility Manaement bac#=off timer the 2 behaviour is not P' specific.

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4.3..4.2.4 Ge'era$ *&S $e5e$ M"i$it; Ma'age6e't c"'gesti"' c"'tr"$

nder eneral overload conditions the MM2 may reject Mobility Manaement sinallin reDuests from 2s. ?hen a '" reDuest is rejected- a Mobility Manaement bac#=off timer may be sent by the MM2 and MM2 may store the

bac#=off time per 2 if a reDuest without the low access priority indicator is rejected by the MM2 and if MM2maintains the 2 contet. The MM2 may immediately reject any subseDuent reDuest from the 2 before the stored

bac#=off time is epired. ?hile the Mobility Manaement bac#=off timer is runnin- the 2 shall not initiate any '"reDuest for Mobility Manaement procedures ecept for 8etach procedure and ecept for hih priority access-

emerency services and mobile terminated services. fter any such 8etach procedure- the bac#=off timer continues to

run. ?hile the Mobility Manaement bac#=off timer is runnin- the 2 is allowed to perform Trac#in rea pdate ifit is already in connected mode. &f the 2 receives a pain reDuest from the MM2 while the Mobility Manaement

bac# off timer is runnin- the 2 shall stop the Mobility Manaement bac#=off timer and initiate the "ervice /eDuest

procedure or the Trac#in rea pdate procedure as described in clause 9.3.3.+.

?hile the Mobility Manaement bac#=off timer is runnin- the 2 confiured with a permission for overridin low

access priority is allowed to initiate the Mobility Manaement procedures without low access priority if the MobilityManaement bac#=off timer was started due to a reject messae received in response to a reDuest with low access

priority and the upper layers in 2 reDuest to establish a P8' connection without low access priority or the 2 has anestablished P8' connection that is without low access priority.

The Mobility Manaement bac#=off timer shall not impact 1ellA/T and P5M' chane. 1ellA/T and T chane donot stop the Mobility Manaement bac#=off timer. The Mobility Manaement bac#=off timer shall not be a trier for

P5M' reselection. The bac#=off timer is stopped as defined in T" *;.3+, J;:K when a new P5M' that is not an

eDuivalent P5M' is accessed.

To avoid that lare amounts of 2s initiate deferred reDuests (almost) simultaneously- the MM2 should select theMobility Manaement bac#=off timer value so that the deferred reDuests are not synchroni!ed.

?hen the 2 receives a handover command- the 2 shall proceed with the handover procedure reardless of whetherMobility Manaement bac#=off timer is runnin.

The MM2 should not reject Trac#in rea pdate procedures that are performed when the 2 is already in connected

mode.

7or idle mode inter 1' node mobility- the MM2 may reject Trac#in rea pdate procedures and include a MobilityManaement bac# off timer value in the Trac#in rea /eject messae.

&f the MM2 rejects Trac#in rea pdate reDuest or "ervice reDuest with a Mobility Manaement bac#=off timer whichis larer than the sum of the 2$s periodic T timer plus the &mplicit 8etach timer- the MM2 should adjust the mobile

reachable timer andAor &mplicit 8etach timer such that the MM2 does not implicitly detach the 2 while the MobilityManaement bac#=off timer is runnin.

'OT2H This is to minimi!e unneeded sinallin after the Mobility Manaement bac#=off timer epires.

4.3..! P* GA c"'tr"$ " "5er$"a#

The P8' G? may provide mechanisms for avoidin and handlin overload situations. These include the rejection of

P8' connection reDuests from 2s.

The P8' G? may detect P' conestion and start and stop performin overload control based on criteria such asH

= Maimum number of active bearers per P'I andAor

= Maimum rate of bearer activations per P'.

?hen performin overload control the P8' G? rejects P8' connection reDuests. ?hen receivin the rejection fromthe P8' G?- the MM2 rejects the 2$s P8' connection reDuest as specified in clause ;.3.<.;.*. &n addition the P8'

G? may indicate a LP8' G? bac#=off timeL for a specific P' to the MM2. The MM2 should reject P8'connection reDuests- for the specific P' related to that P8' G? durin the LP8' G? bac#=off timeL- by the means

specified in clause ;.3.<.;.*. &f a P8' G? indicates P' conestion by the LP8' G? bac#=off timeL the MM2 may

select another P8' G? of that P' instead of rejectin P8' connection reDuests unless there is already an eistinP8' connection to the same P' for the 2- in which case- the MM2 shall reject P8' connection reDuest.

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4.3.< Se$ecti"' u'cti"'s

4.3.<.1 P* GA se$ecti"' u'cti"' (3GPP accesses)

The P8' G? selection function allocates a P8' G? that shall provide the P8' connectivity for the 3GPP access. Thefunction uses subscriber information provided by the @"" and possibly additional criteria such as "&PTOA5&P support

per P' confiured in the "G"'AMM2. The criteria for P8' G? selection may include load balancin between P8'

G?s. ?hen the P8' G? &P addresses returned from the 8'" server include ?eiht 7actors- the MM2 should use it ifload balancin is reDuired. The ?eiht 7actor is typically set accordin to the capacity of a P8' G? node relative to

other P8' G? nodes servin the same P'. 7or further details on the 8'" procedure see T" *C.3+3 J:,K.

?hen the MM2 supports the GTP=1 5oad 1ontrol feature- it ta#es into account the 5oad &nformation received from theP8' G? in addition to the ?eiht 7actors received from the 8'" server to perform selection of an appropriate P8'

G?.

'OT2 ,H @ow ?eiht 7actors can be used in conjuction with 5oad &nformation received via GTP control plane

sinallin is left up to "tae 3.

The P8' subscription contets provided by the @"" containH

= the identity of a P8' G? and an P' (P8' subscription contets with subscribed P8' G? address are notused when there is interoperation with pre /el=> *GA3G "G"')- or

= an P' and an indication for this P' whether the allocation of a P8' G? from the visited P5M' is allowedor whether a P8' G? from the home P5M' shall be allocated. Optionally an identity of a P8' G? may be

contained for handover with non=3GPP accesses.

= optionally for an P'- an indication of whether "&PTO above /'- or "&PTO at the 5ocal 'etwor#- or both- isallowed or prohibited for this P'.

= optionally for an P'- an indication of whether 5&P is conditional- prohibited- or only 5&P is supported for

this P'.

&n the case of static address allocation- a static P8' G? is selected by either havin the P' confiured to map to aiven P8' G?- or the P8' G? identity provided by the @"" indicates the static P8' G?.

The @"" also indicates which of the P8' subscription contets is the 8efault one for the 2.

To establish connectivity with a P8' when the 2 is already connected to one or more P8's- the 2 provides thereDuested P' for the P8' G? selection function.

&f one of the P8' subscription contets provided by the @"" contains a wild card P' (see T" *3.++3 JCK)- a P8'connection with dynamic address allocation may be established towards any P' reDuested by the 2. n indication

that "&PTO (above /'- at the local networ#- or both) is allowed or prohibited for the wild card P' allows or prohibits "&PTO for any P' that is not present in the subscription data.

&f the @"" provides the identity of a statically allocated P8' G?- or the @"" provides the identity of a dynamically

allocated P8' G? and the /eDuest Type indicates L@andoverL- no further P8' G? selection functionality is performed. &f the @"" provides the identity of a dynamically allocated P8' G?- the @"" also provides information

that identifies the P5M' in which the P8' G? is located.

'OT2 *H The MM2 uses this information to determine an appropriate P'=O& and "> protocol type (PM&P orGTP) when the MM2 and P8' G? are located in different P5M's.

&f the @"" provides the identity of a dynamically allocated P8' G? and the /eDuest Type indicates Linitial /eDuestL-either the provided P8' G? is used or a new P8' G? is selected. ?hen a P8' connection for an P' with "&PTO=

allowed is reDuested- the P8' G? selection function shall ensure the selection of a P8' G? that is appropriate for the2$s location. The P8' G? identity refers to a specific P8' G?. &f the P8' G? identity includes the &P address of

the P8' G?- that &P address shall be used as the P8' G? &P addressI otherwise the P8' G? identity includes an7E8' which is used to derive the P8' G? &P address by usin 8omain 'ame "ervice function- ta#in into account

the protocol type on "9A"> (PM&P or GTP).

'OT2 3H Provision of a P8' G? identity of a P8' G? as part of the subscriber information allows also for a

P8' G? allocation by @"".

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&f the @"" provides a P8' subscription contet that allows for allocation of a P8' G? from the visited P5M' for thisP' and- optionally- the MM2 is confiured to #now that the visited BP5M' has a suitable roamin areement with

the @P5M' of the 2- the P8' G? selection function derives a P8' G? identity from the visited P5M'. &f a visitedP8' G? identity cannot be derived- or if the subscription does not allow for allocation of a P8' G? from the visited

P5M'- then the P' is used to derive a P8' G? identity from the @P5M'. The P8' G? identity is derived fromthe P'- subscription data and additional information by usin the 8omain 'ame "ervice function. &f the P8' G?

identity is a loical name instead of an &P address- the P8' G? address is derived from the P8' G? identity- protocoltype on "9A"> (PM&P or GTP) by usin the 8omain 'ame "ervice function. The "> protocol type (PM&P or GTP) is

confiured per @P5M' in MM2A"G"'.

&n order to select the appropriate P8' G? for "&PTO above /' service- the P8' G? selection function uses the

T& (Trac#in rea &dentity)- the servin e'ode0 identifier- or T& toether with servin e'ode0 identifier dependin

on the operator$s deployment durin the 8'" interroation as specified in T" *C.3+3 J:,K to find the P8' G? identity.

&n roamin scenario P8' G? selection for "&PTO is only possible when a P8' G? in the visited P5M' is selected.Therefore in a roamin scenario with home routed traffic- P8' G? selection for "&PTO is not performed.

&n order to select the appropriate G? for "&PTO at the local networ# service with a stand=alone G? (with "=G? and 5=G? collocated)- the P8' G? selection function uses the P' and the 5ocal @ome 'etwor# &8 durin the 8'"

interroation as specified in T" *C.3+3 J:,K to find the P8' G? identity. The 5ocal @ome 'etwor# &8 is provided tothe MM2 by the (@)e'0 in every &'&T&5 2 M2""G2 and every P5&'% '" T/'"PO/T control messae as

specified in T" 3:.;,3 J3:K. The MM2 uses the 5ocal @ome 'etwor# &8 to determine if the 2 has left its currentlocal networ# and if "=G? relocation is needed.

7or "&PTO at the 5ocal 'etwor# with 5=G? function collocated with the (@)e'0 the P8' G? selection function uses

the 5=G? address proposed by the (@)e'0 in the ",=P messae- instead of 8'" interroation.

&n order to select the appropriate 5=G? for 5&P service- if permitted by the 1"G subscription data and if the 2 isroamin- the BP5M' 5&P is allowed- the P8' G? selection function uses the 5=G? address proposed by @e'0 in

the ",=P messae- instead of 8'" interroation. &f no 5=G? address is proposed by the @e'0 and the 2 reDuestedan P' with 5&P permissions set to L5&P=onlyL- the reDuest shall be rejected. &f no 5=G? address is proposed by

the @e'0 and the 2 reDuested an P' with 5&P permissions set to L5&P=conditionalL- the MM2 uses 8'"interroation for PG? selection to establish a non=5&P P8' connection. The P8' subscription contet for an P'

with 5&P permissions set to L5&P=onlyL shall not contain a statically confiured P8' address or a statically allocated

P8' G?. static P8' address or a static P8' G? address- if confiured by @"" for an P' with 5&P permissionsset to L5&P=conditionalL- is inored by MM2 when the P' is established as a 5&P P8' connection. ?henestablishin a P8' connection for a 5&P P'- the BP5M' ddress llowed fla is not considered.

The P8' G? domain name shall be constructed and resolved by the method described in T" *C.3+3 J:,K- which ta#es

into account any value received in the P'=O& /eplacement field for home routed traffic. Otherwise- or when theresolution of the above P8' G? domain name fails- the P8' G? domain name shall be constructed by the servin

node usin the method specified in nne of T" *3.+:+ J<K and clause C of T" *3.++3 JCK. &f the 8omain 'ame

"ervice function provides a list of P8' G? addresses- one P8' G? address is selected from this list. &f the selectedP8' G? cannot be used- e.. due to an error- then another P8' G? is selected from the list. The specific interaction

between the MM2A"G"' and the 8omain 'ame "ervice function may include functionality to allow for the retrieval or provision of additional information reardin the P8' G? capabilities (e.. whether the P8' G? supports

PM&P=based or GTP=based "9A">- or both).

'OT2 ;H The P' as constructed by the MM2A"G"' for P8' G? resolution ta#es into account the P'=O&

/eplacement field. This differs from the P' that is provided in charin data to another "G"' andMM2 over the "3- ",+ and ",: interfaces as well as to "ervin G? and P8' G? over the ",,- "; and

"9A"> interfaces- in that the P'=O& /eplacement field is not applied. "ee clause 9.<.* of the presentdocument for more details.

&f the 2 provides an P' for a P8'- this P' is then used to derive the P8' G? identity as specified for the case of

@"" provided P' if one of the subscription contets allows for this P'.

&f there is an eistin P8' connection to the same P' used to derive the P8' G? address- the same P8' G? shall be selected.

s part of P8' G? selection- an &P address of the assined P8' G? may be provided to the 2 for use with host based mobility as defined in T" *3.;+* J*K- if the P8' G? supports host=based mobility for inter=access mobility

towards accesses where host=based mobility can be used. &f a 2 eplicitly reDuests the address of the P8' G? and theP8' G? supports host based mobility then the P8' G? address shall be returned to the 2.

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4.3.<.2 Ser5i'g GA se$ecti"' u'cti"'

The "ervin G? selection function selects an available "ervin G? to serve a 2. The selection bases on networ#topoloy- i.e. the selected "ervin G? serves the 2$s location and for overlappin "ervin G? service areas- the

selection may prefer "ervin G?s with service areas that reduce the probability of chanin the "ervin G?. ?hen"&PTO is allowed then it is also considered as a criterion for "ervin G? selection- e.. when the first P8' connection

is reDuested. Other criteria for "ervin G? selection should include load balancin between "ervin G?s. ?hen the"ervin G? &P addresses returned from the 8'" server include ?eiht 7actors- the MM2 should use it if load

balancin is reDuired. The ?eiht 7actor is typically set accordin to the capacity of a "ervin G? node relative toother "ervin G? nodes servin the same Trac#in area. 7or further details on 8'" procedure see T" *C.3+3 J:,K.

?hen the MM2 supports the GTP=1 5oad 1ontrol feature- it ta#es into account the 5oad &nformation received from the"ervin G? in addition to the ?eiht 7actors received from the 8'" server to perform selection of an appropriate

"ervin G?.

'OT2H @ow ?eiht 7actors can be used in conjuction with 5oad &nformation received via GTP control plane

sinallin is left up to "tae 3.

&f a subscriber of a GTP only networ# roams into a PM&P networ#- the P8' G?s selected for local brea#out support

the PM&P protocol- while P8' G?s for home routed traffic use GTP. This means the "ervin G? selected for such

subscribers may need to support both GTP and PM&P- so that it is possible to set up both local brea#out and homerouted sessions for these subscribers. 7or a "ervin G? supportin both GTP and PM&P- the MM2A"G"' shouldindicate the "ervin G? which protocol should be used over "9A"> interface. The MM2A"G"' is confiured with the

"> variant(s) on a per @P5M' ranularity.

&f a subscriber of a GTP only networ# roams into a PM&P networ#- the P8' G?s selected for local brea#out may

support GTP or the subscriber may not be allowed to use P8' G?s of the visited networ#. &n both cases a GTP only

based "ervin G? may be selected. These cases are considered as roamin between GTP based operators.

&f combined "ervin and P8' G?s are confiured in the networ# the "ervin G? "election 7unction may preferablyderive a "ervin G? that is also a P8' G? for the 2.

&n order to provide "&PTO at the local networ# service with stand=alone G?- the 5=G? and "ervin G? shall be co=

located. The "ervin G? selection function in the MM2 is used to ensure that the "ervin G? is provided accordin tooperator policy as described in clause ;.3.,9a. ?hen the 5=G? is collocated with the (@)e'0- the "ervin G? remainslocated in the mobile operator$s core networ#.

The 8omain 'ame "ervice function may be used to resolve a 8'" strin into a list of possible "ervin G? addresses

which serve the 2$s location. The specific interaction between the MM2A"G"' and the 8omain 'ame "ervicefunction may include functionality to allow for the retrieval or provision of additional information reardin the "ervin

G? capabilities (e.. whether the "ervin G? supports PM&P=based or GTP=based "9A">- or both). The details of the

selection are implementation specific.

7or handover from non=3GPP accesses in roamin scenario- the "ervin G? selection function for local anchorin is

described in T" *3.;+* J*K.

The "ervin G? selection function in the MM2 is used to ensure that all Trac#in reas in the Trac#in rea 5ist

belon to the same "ervin G? service area.

4.3.<.3 MME se$ecti"' u'cti"'

The MM2 selection function selects an available MM2 for servin a 2. The selection is based on networ# topoloy-

i.e. the selected MM2 serves the 2$s location and for overlappin MM2 service areas- the selection may prefer MM2swith service areas that reduce the probability of chanin the MM2. ?hen a MM2A"G"' selects a taret MM2- the

selection function performs a simple load balancin between the possible taret MM2s. &n networ#s that deploydedicated MM2sA"G"'s- e.. for 2s confiured for low access priority- the possible taret MM2 selected by source

MM2A"G"' is typically restricted to MM2s with the same dedication.

?hen an e'ode0 selects an MM2- the e'ode0 may use a selection function which distinuishes if the GMM2& is

mapped from P=TM"&A/& or is a native GMM2&. The indication of mapped or native GMM2& shall be sinalled bythe 2 to the e'ode0 as an eplicit indication. The e'ode0 may differentiate between a GMM2& mapped from

P=TM"&A/& and a native GMM2& based on the indication sinalled by the 2. lternatively- the differentiation

between a GMM2& mapped from P=TM"&A/& and a native GMM2& may be performed based on the value of most

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sinificant bit of the MM2 Group &8- for P5M's that deploy such mechanism. &n this case- if the M"0 is set to L+Lthen the GMM2& is mapped from P=TM"&A/& and if M"0 is set to L,L- the GMM2& is a native one. lternatively

the e'ode0 ma#es the selection of MM2 only based on the GMM2& without distinuishin on mapped or native.

?hen an e'ode0 selects an MM2- the selection shall achieve load balancin as specified in clause ;.3.<.*.

4.3.<.4 SGS* se$ecti"' u'cti"'

The "G"' selection function selects an available "G"' to serve a 2. The selection is based on networ# topoloy- i.e.the selected "G"' serves the 2$s location and for overlappin "G"' service areas- the selection may prefer "G"'s

with service areas that reduce the probability of chanin the "G"'. ?hen a MM2A"G"' selects a taret "G"'- theselection function performs a simple load balancin between the possible taret "G"'s. &n networ#s that deploy

dedicated MM2sA"G"'s- e.. for 2s confiured for low access priority- the possible taret "G"' selected by sourceMM2A"G"' is typically restricted to "G"'s with the same dedication.

4.3.<.! Se$ecti"' " P+R

The P8' G? and 7 may be served by one or more P1/7 nodes in the @P5M' and- in roamin with local brea#out

scenarios- one or more P1/7 nodes in the BP5M'.

The selection of P1/7 and lin#in of the different 2$s P11 sessions over the multiple P1/7 interfaces (e.. /session- G session- "C session etc.) for a 2 &P 1' session is described in T" *3.*+3 J:K.

4.3. :P 'et"rB re$ate# u'cti"'s

4.3..1 "6ai' *a6e Ser5ice u'cti"'

The 8omain 'ame "ervice function resolves loical P8' G? names to P8' G? addresses. This function is standard&nternet functionality accordin to /71 ,+3; J,<K- which allows resolution of any name to an &P address (or addresses)

for P8' G?s and other nodes within the 2P".

4.3..2 7+P u'cti"'

The 8ynamic @ost 1onfiuration 7unction allows to deliver &P confiuration information for 2s. This function is

standard &nternet functionality accordin to /71 *,3, J,CK- /71 3<3: J*+K- /71 3:33 J*,K and /71 ;+3C J*9K.

4.3..3 E/%$icit +"'gesti"' *"tiicati"'

The 2=T/'AT/' and the 2 support the /71 3,:> J99K 2plicit 1onestion 'otification (21')- as describedin T" 3:.3++ J9K- T" *9.;+, J,:K and T" *:.,,; J9:K.

4.3.10 u'cti"'a$it; "r +"''ecti"' " e*"#eCs t" Mu$ti%$e MMEs

n e'ode0 may connect to several MM2s. This implies that an e'ode0 must be able to determine which of theMM2s- coverin the area where an 2 is located- should receive the sinallin sent from a 2. To avoid unnecessary

sinallin in the core networ#- a 2 that has attached to one MM2 should enerally continue to be served by this MM2

as lon as the 2 is in the radio coverae of the pool area to which the MM2 is associated. The concept of pool area isa /' based definition that comprises one or more T(s) that- from a /' perspective- are served by a certain roup

of MM2s. This does not eclude that one or more of the MM2s in this roup serve Ts outside the pool area. Thisroup of MM2s is also referred to as an MM2 pool.

To enable the e'ode0 to determine which MM2 to select when forwardin messaes from an 2- this functionalitydefines a routin mechanism (and other related mechanism). routin mechanism (and other related mechanism) is

defined for the MM2s. The routin mechanism is reDuired to find the correct old MM2 (from the multiple MM2s thatare associated with a pool area). ?hen a 2 roams out of the pool area and into the area of one or more MM2s that do

not #now about the internal structure of the pool area where the 2 roamed from- the new MM2 will send the

&dentification /eDuest messae or the 1ontet /eDuest messae to the old MM2 usin the GT&. The routinmechanism in both the MM2s and the e'ode0 utilises the fact that every MM2 that serves a pool area must have itsown uniDue value rane of the GT& parameter within the pool area.

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4.3.11 E-UTR&* Shari'g u'cti"'

2=T/' "harin is an areement between operators and shall be transparent to the user. This implies that an2=T/' 2 needs to be able to discriminate between core networ# operators available in a shared radio access

networ# and that these operators can be handled in the same way as operators in non=shared networ#s. 2=T/'terminals support 2=T/' "harin.

n 2=T/' "harin architecture allows different core networ# operators to connect to a shared radio access networ#.

The operators do not only share the radio networ# elements- but may also share the radio resources themselves. &naddition to this shared radio access networ# the operators may or may not have additional dedicated radio access

networ#s- li#e for eample- 3G or *G radio access networ#s. 7or 2=T/' both Multi=Operator 1ore 'etwor#

(MO1') confiuration and Gateway 1ore 'etwor# (G?1') confiuration as defined in T" *3.*9, J*;K are supportedover the ", reference point. 2=T/' terminals shall support shared networ#s and hence- only functions for

L"upportin 2sL in T" *3.*9, J*;K applies for 2=T/' "harin.

2=T/' /adio ccess 'etwor# "harin functions is further described in T" 3:.3++ J9K.

&n networ#s that support networ# sharin as defined in T" *3.*9, J*;K- for a 2 in state 21M=1O''21T28- the@andover /estriction 5ist provided by the core=networ# to the radio access networ# is also used to inform the radio

access networ# about the "elected P5M' and eDuivalent P5M's as defined in T" 3:.;,3 J3:K.

4.3.12 :MS E6erge'c; Sessi"' Su%%"rt

4.3.12.1 :'tr"#ucti"'

1lause ;.3.,* &M" 2merency "ession provides an overview about functionality for emerency bearer services in a

sinle clause. The specific functionality is described in the affected procedures and functions of this specification. 7ordiscrepancies between this overview clause and the detailed procedure and function descriptions the latter ta#e

precedence.

2merency bearer services are provided to support &M" emerency sessions. 2merency bearer services are

functionalities provided by the servin networ# when the networ# is confiured to support emerency services.2merency bearer services are provided to normal attached or emerency attached 2s and dependin on local

reulation- to 2s that are in limited service state. /eceivin emerency services in limited service state does notreDuire a subscription. 8ependin on local reulation and an operator$s policy- the MM2 may allow or reject an

emerency attach reDuest for 2s in limited service state. 7our different behaviours of emerency bearer support have been identified as followsH

a. Va*id $" on*. 'o limited service state 2s are supported in the networ#. Only 2s that have a validsubscription- are authenticated and authori!ed for P" service in the attached location are allowed. 2s should be

attached to the networ# and then perform a P8' 1onnection /eDuest when an &M" emerency session isdetected by the 2.

b. >n* $" that are a1thentiated are a**owed. These 2s must have a valid &M"&. These 2s areauthenticated and may be in limited service state due to bein in a location that they are restricted from service.

2 that can not be authenticated will be rejected.

c. I%I re1ired a1thentiation optiona*. These 2s must have an &M"&. &f authentication fails- the 2 is

ranted access and the unauthenticated &M"& retained in the networ# for recordin purposes. The &M2& is used in

the networ# as the 2 identifier. &M2& only 2s will be rejected (e..- &11less 2s).

d. A** $" are a**owed. lon with authenticated 2s- this includes 2s with an &M"& that can not beauthenticated and 2s with only an &M2&. &f an unauthenticated &M"& is provided by the 2- the unauthenticated

&M"& is retained in the networ# for recordin purposes. The &M2& is used in the networ# to identify the 2.

To provide emerency bearer services- the MM2 is confiured with MM2 2merency 1onfiuration 8ata that are

applied to all emerency bearer services that are established by an MM2 on 2 reDuest. The MM2 2merency1onfiuration 8ata contain the 2merency P' which is used to derive a P8' G?- or the MM2 2merency

1onfiuration 8ata may also contain the statically confiured P8' G? for the 2merency P'.

2s that are in limited service state- as specified in T" *3.,** J,+K- initiate the ttach procedure with indicatin that theattach is to receive emerency services. lso 2s that had attached for normal services and do not have emerency

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bearers established and are camped on a cell in limited service state (e.. because of restricted Trac#in rea or notallowed 1"G) shall initiate this ttach procedure- indicatin that the attach is to receive emerency services. The

networ# supportin emerency services for 2s in limited service state provides emerency bearer services to these2- reardless whether the 2 can be authenticated- has roamin or mobility restrictions or a valid subscription-

dependin on local reulation. The 2s in limited service state determine that the cell supports emerency services over2=T/' from a broadcast indicator in ".

7or a 2 that is 2merency ttached- if it is unauthenticated the 2P" security contet is not set up on 2.

2s that camp normally on a cell- i.e. without any conditions that result in limited service state- initiate the normal

initial attach procedure if not already attached. 'ormal attached 2s initiate the 2 /eDuested P8' 1onnectivity procedure to receive emerency bearer services. The 2s that camp normally on a cell are informed that the P5M'

supports emerency bearer services over 2=T/' from the 2merency "ervice "upport indicator in the ttach andT procedures. 2s that camp normally on a cell may also use the emerency attach procedure under conditions

specified in T" *;.3+, J;:K- e.. when the MM bac#=off timer is runnin.

'OT2 ,H 7ailure of the normal initial attach may occur e.. when the networ# rejects the reDuest with a bac#=off

time.

'OT2 *H The establishment of the emerency bearer services may fail when the 2 needs to perform a T prior

to the 2 /eDuested P8' 1onnectivity procedure- i.e. the 2 moved into a non=reistered Trac#in reawith the MM bac#=off timer runnin in the 2.

7or a 2 that is 2merency ttached- normal P5M' selection principles apply after the end of the &M" emerencysession.

7or emerency bearer services any 2P1 functions- procedures and capabilities are provided accordin to clause ;ecept when specified differently in the followin sections.

7or emerency bearer services there is no support of inter P5M' mobility in this version of the specification.

7or emerency bearer services there is no support of handover from non=3GPP access to 2=T/' access in this

version of the specification.

The 2 shall set the //1 establishment cause to emerency as defined in T" 3:.33, J3<K when it reDuests an //1connection in relation to an emerency session. "pecific situations that reDuire settin the //1 establishment cause toemerency are described in T" *;.3+, J;:K.

?hen a P5M' supports &M" and emerency bearer services- all MM2s in that P5M' shall have the same capability tosupport emerency bearer services.

'OT2H &dle mode "inallin /eduction (&"/) is not supported by the networ# for 2s that only have bearersrelated to emerency bearer service.

4.3.12.2 &rchitecture Reere'ce M"#e$ "r E6erge'c; Ser5ices

ccordin to clause ;.*- the non=roamin architectures (7iure ;.*.,=, and 7iure ;.*.,=*) and roamin architecture

with the visited operator$s application function (7iure ;.*.*=3) apply for emerency services. The other roaminarchitectures with services provided by the home networ# do not apply for emerency services.

4.3.12.3 M"i$it; a'# &ccess Restricti"'s "r E6erge'c; Ser5ices

?hen 2merency "ervices are supported and local reulation reDuires 2merency "essions to be provided reardless of

mobility or access restrictions- the Mobility /estrictions in clause ;.3.9.<- should not be applied to 2s receivinemerency services. ?hen the 2=/0s for emerency bearers are established- the /P value for emerency bearer

services indicates the usae for emerency services to the 2=T/'.

8urin handovers- the source 2=T/' and source MM2 inore any 2 related restrictions durin handover

evaluation when there are active emerency bearers. 2=T/' shall not initiate handover to G2/' P" domain.8urin handover to a 1"G cell- if the 2 is not a 1"G member of taret 1"G cell and has emerency bearer services-

the taret e'ode0 only accepts the emerency bearers and the taret MM2 releases the non=emerency P8'connections that were not accepted by the taret e'ode0 as specified in clause 9.,+.3. "uch 2s behave as emerencyattached.

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8urin Trac#in rea pdate procedures- includin a T as part of a handover- the taret MM2 inores any mobilityor access restrictions for 2 with emerency bearer services where reDuired by local reulation. ny non emerency

bearer services are deactivated- accordin to clause 9.,+.3- by the taret MM2 when not allowed by the subscription forthe taret location. "uch 2s behave as emerency attached. To allow the emerency attached 2 to et access to

normal services after the emerency session has ended and when it has moved to a new area that is not stored by the 2as a forbidden area- the 2 may eplicitly detach and reattach to normal services without waitin for the emerency

P8' connection deactivation by the P8' G?.

This functionality applies to all mobility procedures.

4.3.12.3a Reachai$it; Ma'age6e't "r UE i' E+M-:LE state

n emerency attached 2 when its periodic T update timer epires shall not initiate a periodic T procedure butenter 2MM=82/2G&"T2/28 state. 7or emerency attached 2s the MM2 runs a mobile reachable timer with a

similar value to the 2$s periodic T timer. ny time after epiry of this timer the MM2 may chane the 2MM stateof an emerency attached 2 to 2MM=82/2G&"T2/28. The MM2 assins the periodic T timer value to

emerency attached 2. This timer #eeps the 2 emerency attached after chane to 2MM=&852 state to allow for asubseDuent emerency service without a need to emerency attach aain.

4.3.12.4 P* GA se$ecti"' u'cti"' (3GPP accesses) "r E6erge'c; Ser5ices

?hen a P8' G? is selected for &M" emerency services support- the P8' G? selection function described inclause ;.3.>., for normal bearer services is applied to the 2merency P' or the MM2 selects the P8' G? directly

from the MM2 2merency 1onfiuration 8ata. &f the P8' G? selection function described in clause ;.3.>., is used itshall always derive a P8' G? in the visited P5M'- which uarantees that also the &P address is allocated by the

visited P5M'. &n networ#s that support handover between 2=T/' and @/P8 accesses- the MM2 selects a P8'G? that is statically confiured in the MM2 2merency 1onfiuration 8ata. The P8' G? selection does not depend

on subscriber information in the @"" since emerency service support is a local- not subscribed service. The MM22merency 1onfiuration 8ata contains the 2merency P' which is used to derive a P8' G?- or the MM2

2merency 1onfiuration 8ata may also contain the statically confiured P8' G? for the 2merency P'.

This functionality is used by the ttach procedure and by the 2 /eDuested P8' 1onnectivity procedure- in both cases

when establishin emerency bearer services.

'OT2H &t is assumed that the same P8' G? is confiured in 3GPP and @/P8 accesses.

4.3.12.! "S "r E6erge'c; Ser5ices

?here local reulation reDuire supportin calls from an unauthorised caller- the MM2 may not have subscription data.dditionally- the local networ# may want to provide &M" emerency services support differently than what is allowed

by a 2 subscription. Therefore- the initial Eo" values used for establishin emerency bearer services are confiuredin the MM2 in the MM2 2merency 1onfiuration 8ata.

'OT2H 7or &M" emerency services prior to this /elease of this specification- dynamic P11 support was notreDuired in the specifications. &n such cases- the P8' G? sets the /P value that is reserved for

emerency services- which the P8' G? bases on the usae of the 2merency P'.

This functionality is used by the ttach procedure and by the 2 /eDuested P8' 1onnectivity procedure- in both cases

when establishin emerency bearer services.

4.3.12. P++ "r E6erge'c; Ser5ices

8ynamic P11 is used for 2s establishin emerency service- the procedures are as described in T" *3.*+3 J:K. ?hen

establishin emerency bearer services with a P8' G?- accordin to clause ;.<.9- the P1/7 provides the P8' G?with the Eo" parameters- includin an /P value reserved for the emerency bearers to prioriti!e the bearers when

performin admission control. 8ynamic P11 shall be used to manae &M" emerency sessions when an operatorallows &M" emerency sessions.

'OT2H 7or &M" emerency services prior to this /elease of this specification- dynamic P11 support was notreDuired in the specifications. ccordin to clause ;.<.9- when solely usin voiceAGTT- local

confiuration of static policy functions is also allowed prior to this /elease of this specification and is notsubject to standardi!ation.

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The P1/7 ensures that the emerency P8' connection is used only for &M" emerency sessions. The P1/7 rejects an&M" session established via the emerency P8' connection if the 7 (i.e. P=1"17) does not provide an emerency

indication to the P1/7.

4.3.12. L"a# re-a$a'ci'g etee' MMEs "r E6erge'c; Ser5ices

s per load re=balancin procedures in clause ;.3.<.3- the MM2 is allowed to off=load 21M=1O''21T28 mode 2s by initiatin ", /elease procedures. ?hen a 2 is in 21M=1O''21T28 mode with an active emerency bearer

service- the MM2 should not release the 2 for load re=balancin. The MM2 should wait until the 2 initiates a T

or becomes inactive. The MM2 may release the 2 under critical conditions such as the need to perform an MM2 noderestart.

4.3.12.< :P &##ress &$$"cati"'

2merency bearer service is provided by the servin P5M'. The 2 and P5M' must have compatible &P addressversions in order for the 2 to obtain a local emerency P8' connection. &P address allocation in the servin P5M' is

provided per clause 9.3., with the eception that the P8' G? associated with the emerency P' shall support P8'type &Pv; and P8' type &Pv:.

4.3.12. 7a'#$i'g " P* +"''ecti"'s "r E6erge'c; Cearer Ser5ices

The default and dedicated 2P" bearers of a P8' 1onnection associated with the emerency P' shall be dedicated for&M" emerency sessions and shall not allow any other type of traffic. The emerency bearer contets shall not be

chaned to non=emerency bearer contets and vice versa. The P8' G? shall bloc# any traffic that is not from or toaddresses of networ# entities (e.. P=1"17) providin &M" emerency service. 8ynamic P11 shall be deployed in

order to support &M" emerency sessions- the procedures are as described in T" *3.*+3 J:K. &f there is already anemerency P8' G? connection- the 2 shall not reDuest another emerency P8' 1onnection. The MM2 shall reject

any additional emerency P8' 1onnection reDuests. The 2 shall not reDuest any bearer resource modification for theemerency P8' connection. The P8' G? shall reject any 2 reDuested bearer resource modification that is for the

emerency P8' 1onnection. The /P reserved for emerency bearer service shall only be assined to 2P" bearersassociated with an emerency P8' 1onnection.

4.3.12.10 :SR u'cti"' "r E6erge'c; Cearer Ser5ices

?hen 2 has only emerency bearer service- &"/ does not apply.

4.3.13 +$"se# Suscrier Gr"u% u'cti"'s

1losed "ubscriber Group identifies a roup of subscribers who are permitted to access one or more 1"G cells of the

P5M' as a member of the 1"G for a @e'0. The followin 1"G related functions are definedH

= 1"G subscription handlin function stores and updates the user$s 1"G subscription data at the 2 and the

networ#.

= 7or closed mode- 1"G access control function ensures a 2 has valid subscription at a 1"G where it performs

an access.

= dmission and rate control function is used to provide different admission and rate control for 1"G and non=

1"G members for a hybrid 1"G cell.

= 1"G charin function enables per 1"G charin for a subscriber consumin networ# services via a 1"G cell or

a hybrid cell.

= Pain optimi!ation function is optionally used to filter pain messaes based on T& 5ist- user$s 1"Gsubscription data and 1"G access mode in order to avoid pain at 1"G cells where the 2 is not allowed to

access.

= BP5M' utonomous 1"G roamin function is optionally supported whereby a BP5M'- if allowed by the@P5M'- stores and manaes BP5M' specific 1"G subscription information for roamin 2s without

interaction with the @"".

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4.3.14 L"cati"' Ser5ice u'cti"'s

51" procedures are described in the 51" stae * specification- see T" *3.*<, J9<K.

&n addition- in the 8etach and 0earer 8eactivation procedures- the MM2 shall inform the "=G? of the last #nown

location of the 2- and shall provide information to enable the determination of the time at which the 2 was in that

location. The "=G? shall (if necessary ta#in into account information from the "G"') inform the P8' G? of the last#nown location of the 2- and shall provide information to enable the determination of the time at which the 2 was in

that location. &f reDuested by the P1/7 the P8' G? shall indicate this information to the P1/7 as defined inT" *3.*+3 J:K. The information can also be made available on the "Gi interface as specified in T" *C.+:, J3>K and on

the 18/s at the P8' G? as specified in T" 3*.*9, J;;K.

4.3.1! Se$ecte# :P Traic 8$"a# (S:PT8) u'cti"'

The "&PTO function enables an operator to offload certain types of traffic at a networ# node close to that 2$s point ofattachment to the access networ#.

"&PTO above /' can be achieved by selectin a set of G?s ("=G? and P=G?) that is eoraphicallyAtopoloicallyclose to a 2$s point of attachment.

"&PTO above /' corresponds to a traffic offload throuh a P=G? located in the mobile operator$s core networ#.

"&PTO applies to both the non=roamin case and- provided appropriate roamin areements are in place between theoperators- to the roamin case.

Offload of traffic for a 2 is available for T/' and 2=T/' accesses only. ?hen the 2 enters to T/'A2=

T/' from another type of access networ# (e..- from G2/')- it is the responsibility of the new "G"'AMM2 todecide whether to perform deactivation with reactivation reDuest for a iven P8' connection- dependin on "&PTO

permissions for the relevant P'.

/eali!ation for "&PTO above /' relies on the same architecture models and principles as for local brea#out described

in clause ;.*.

&n order to select a set of appropriate G? ("=G? and P=G?) based on eoraphicalAtopoloical proimity to 2- theG? selection function specified in T" *C.3+3 J:,K uses the 2$s current location information.

&n order for the operator to allowAprohibit "&PTO on per user and per P' basis- subscription data in the @"" is

confiured to indicate to the MM2 if offload is allowed or prohibited. &f the "&PTO permissions information from the@"" conflicts with MM2$s confiuration for that 2- then "&PTO is not used.

&f @"" indicates BP5M' address not allowed- then BP5M' (i.e. MM2) shall not provide "&PTO.

&n the absence of any "&PTO permissions indication from the @"" the BP5M' (i.e MM2) shall not provide "&PTO.

The MM2 may be confiured on a per P' basis as to whether or not to use "&PTO (e.. to handle the case where the@"" is not confiured with "&PTO information for the 2).

7or "&PTO above /'- as a result of 2 mobility (e.. detected by the MM2 at T or "G"' at / or movementfrom G2/')- the taret MM2 may wish to redirect a P8' connection towards a different G? that is more

appropriate for the 2$s current location- e.. MM2 may #now whether the 2$s new location is served by the sameG? as the old one. ?hen the MM2 decides upon the need for G? relocation- the MM2 deactivates the impacted P8'

connections indicatin Lreactivation reDuestedL as specified in clause 9.,+.3. &f all of the P8' connections for the 2need to be relocated- the MM2 may initiate the Leplicit detach with reattach reDuiredL procedure as specified in

clause 9.3.>.3.

'OT2H &f either of the above procedures for G? relocation are initiated while the 2 has active applications- it

may cause disruption of services that are affected if the &P address chanes.

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4.3.1!a Se$ecte# :P Traic 8$"a# (S:PT8) at the L"ca$ *et"rB

4.3.1!a.1 Ge'era$

The "&PTO at the 5ocal 'etwor# function enables an &P capable 2 connected via a (@)e'0 to access a defined &Pnetwor# (e.. the &nternet) without the user plane traversin the mobile operator$s networ#.

The subscription data in the @"" are confiured per user and per P' to indicate to the MM2 if offload at the localnetwor# is allowed or not.

"&PTO at the 5ocal 'etwor# can be achieved by selectin a 5=G? function collocated with the (@)e'0 or selectinstand=alone G?s (with "=G? and 5=G? collocated) residin in the 5ocal 'etwor#. &n both cases the selected &P traffic

is offloaded via the 5ocal 'etwor#.

"pecific to the @e'0 subsystem- the applicability of "&PTO at the 5ocal 'etwor# does not depend on 1"G membership

and the feature can be applied to any 2- as lon as the 2 is allowed to access the cell.

7or this release of the specification- no interface between the 5=G? and the P1/7 is specified and there is no support

for dedicated bearers on the P8' connection used for "&PTO at the 5ocal 'etwor#. The 5ocal G? (5=G?) shall reject

any 2 reDuested bearer resource modification.

7or this release of the specification- "&PTO at the 5ocal 'etwor# is intended for offloadin &nternet traffic only- thus the5=G? does not provide P' specific connectivity. Therefore if the subscription data in the @"" indicate that offload at

the 5ocal 'etwor# is allowed- this implies that the related P' is typically used for providin &nternet connectivity.

&f the MM2 detects a chane in "&PTO permissions in the subscription data for a iven subscriber for a iven P' and

the subscriber has already established a "&PTO at the local networ# P8' connection to that P'- the MM2 shall

release the "&PTO at the 5ocal 'etwor# P8' connection for that P' with Lreactivation reDuestedL cause as specifiedin clause 9.,+.3.

'OT2H &n this release of the specification it is assumed that the taret "=G? selected durin the @andover also

has connectivity to the 5=G?.

4.3.1!a.2 S:PT8 at the L"ca$ *et"rB ith sta'#-a$"'e GA (ith S-GA a'# L-GAc"$$"cate#) u'cti"'

"&PTO at the 5ocal 'etwor# is achieved usin a stand=alone G? (with "=G? and 5=G? collocated) residin in the

5ocal 'etwor#.

(@)e'0 supportin "&PTO at the 5ocal 'etwor# with the stand=alone G? includes the 5ocal @ome 'etwor# &8 to

the MM2 in every &'&T&5 2 M2""G2- every P5&'% '" T/'"PO/T control messae- @'8OB2/ 'OT&7 and PT@ "?&T1@ /2E2"T messaes.

&f a "&PTO P8' connection is initiated as an additional subseDuent P8' connection- the MM2 should chec# if the"=G? is optimal for the user$s current location. &f it is not- and if the networ# supports "=G? relocation without bein

triered by a mobility event- the MM2 may decide to perform an MM2 triered "ervin G? relocation accordin toclause 9.,+.;- when possible (e.. no other restrictions apply).

7or "&PTO at the 5ocal 'etwor# with a stand=alone G?- the location of the "ervin G? may be determined based onthe operator policy and user$s profile reardin support of "&PTO at 5ocal 'etwor# so thatH

= t attachment to the (@)e'0- a local "=G? can always be selected independent of whether a "&PTO at the 5ocal 'etwor# P8' connection is established or not. &f mobility is performed to the macro networ# without havin a

"&PTO connection- a "=G? relocation can be performed as specified via eistin mobility procedures with "=

G? relocation.

= t attachment to a (@)e'0- a macro "=G? may be allocated for P8' connection in the operator$s networ#. &f anew P8' connection is reDuested by the 2 that reDuires that a local "=G? is selected to provide for "&PTO at

the 5ocal 'etwor#- "=G? relocation from the macro "=G? to the local "=G? shall be performed as specified in

clause 9.,+.;.

s &P data session continuity for "&PTO at the 5ocal 'etwor# P8' connection is not supported in this release of thespecification- subseDuent to handover completion the (taret) MM2 should disconnect the "&PTO at the 5ocal 'etwor#

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P8' connection with Lreactivation reDuestedL cause as specified in clause 9.,+.3- unless the 5ocal @ome 'etwor# &8 isnot chaned. The &P data session should be maintained if the 5ocal @ome 'etwor# &8 is not chaned. &f the 2 has no

other P8' connection and the 5ocal @ome 'etwor# &8 is chaned- the (taret) MM2 initiates Leplicit detach withreattach reDuiredL procedure accordin to clause 9.3.>.3.

pon completion of Trac#in rea pdate procedure- the (new) MM2 shall trier the re=establishment of the "&PTO

at the 5ocal 'etwor# P8' connection when it detects that the 2 has moved away from the (@)e'0 and to a (@)e'0with different 5ocal @ome 'etwor# &8- as specified in clause 9.3.3 and clause 9.3.;.

'OT2H &t is epected that all MM2sA"G"'s in a P5M' have support for "&PTO at the 5ocal 'etwor# where the

operator deploys this feature- in order to support mobility procedures. 7or a mobility event where taretMM2A"G"' does not support "&PTO at the 5ocal 'etwor#- the handlin of P8' deactivation for "&PTO

at 5ocal 'etwor# P8' connection is not specified.

4.3.1!a.3 S:PT8 at the L"ca$ *et"rB ith L-GA u'cti"' c"$$"cate# ith the (7)e*C

"&PTO at the 5ocal 'etwor# is achieved usin a 5ocal G? (5=G?) function collocated with the (@)e'0 and usin the

same procedures as described in clause ;.3.,9- with the followin additionsH

= The (@)e'0 supportin the "&PTO at the 5ocal 'etwor# function includes the 5ocal G? address to the MM2 inevery &'&T&5 2 M2""G2 and every P5&'% '" T/'"PO/T control messae specified inT" 3:.;,3 J3:K.

= The P8' G? selection function uses the 5=G? address proposed by (@)e'0 in the ",=P messae- instead of8'" interroation.

= "pecific to the @e'0 subsystem- the 5ocal G? information for "&PTO at the 5ocal 'etwor# is sinalled on ",separately from the 5ocal G? information for 5&P. The 5=G? shall be able to discriminate between P8'

connection for "&PTO at the 5ocal 'etwor# and for 5&P.

'OT2 ,H The protocol option (i.e. GTP or PM&P) supported on the "9 interface between 5ocal G? and "=G? is

confiured on the MM2.

The direct user plane path between the (@)e'0 and the collocated 5=G? is enabled with a "&PTO 1orrelation &8 parameter that is associated with the default 2P" bearer on the P8' connection used for "&PTO at the 5ocal 'etwor#.pon establishment of the default 2P" bearer the MM2 sets the "&PTO 1orrelation &8 eDual to the P8' G? T2&8

(GTP=based "9) or the P8' G? G/2 #ey (PM&P=based "9). The "&PTO 1orrelation &8 is then sinalled by the MM2to the (@)e'0 as part of 2=/0 establishment and is stored in the 2=/0 contet in the (@)e'0. The "&PTO

1orrelation &8 is used in the (@)e'0 for matchin the radio bearers with the direct user plane path connections from thecollocated 5=G? for "&PTO at local networ# P8' connection.

s &P data session continuity for the "&PTO at the 5ocal 'etwor# P8' connection is not supported in this release of the

specification- the "&PTO at the 5ocal 'etwor# P8' connection shall be re=established when the 2 moves away from

(@)e'0. 8urin the handover procedure- when the source (@)e'0 releases its resources related to the 2- the (@)e'0shall reDuest usin intra=node sinallin the collocated 5=G? to re=establish the "&PTO at the 5ocal 'etwor# P8'

connection. The 5=G? starts a timer. ?hen the timer epires- the 5=G? shall initiate the release of the "&PTO at the

5ocal 'etwor# P8' connection usin the P8' G? initiated bearer deactivation procedure accordin to clause 9.;.;.,with the Lreactivation reDuestedL cause value.

4.3.1 L"ca$ :P &ccess (L:P&) u'cti"'

The 5&P function enables an &P capable 2 connected via a @e'0 to access other &P capable entities in the same

residentialAenterprise &P networ# without the user plane traversin the mobile operator$s networ# ecept @e'0subsystem.

The 5ocal &P ccess is achieved usin a 5ocal G? (5=G?) colocated with the @e'0.

5&P is established by the 2 reDuestin a new P8' connection to an P' for which 5&P is permitted- and the

networ# selectin the 5ocal G? associated with the @e'0 and enablin a direct user plane path between the 5ocal G?

and the @e'0. The @e'0 supportin the 5&P function includes the 5ocal G? address to the MM2 in every &'&T&52 M2""G2 and every P5&'% '" T/'"PO/T control messae as specified in T" 3:.;,3 J3:K.

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'OT2 ,H The protocol option (i.e. GTP or PM&P) supported on the "9 interface between 5ocal G? and "=G? isconfiured on the MM2.

7or this release of the specification no interface between the 5=G? and the P1/7 is specified and there is no supportfor 8edicated bearers on the P8' connection used for 5ocal &P ccess. The 5ocal G? (5=G?) shall reject any 2

reDuested bearer resource modification.

The direct user plane path between the @e'0 and the collocated 5=G? is enabled with a 1orrelation &8 parameter thatis associated with the default 2P" bearer on a P8' connection used for 5ocal &P ccess. pon establishment of the

default 2P" bearer the MM2 sets the 1orrelation &8 eDual to the P8' G? T2&8 (GTP=based "9) or the P8' G?

G/2 #ey (PM&P=based "9). The 1orrelation &8 is then sinalled by the MM2 to the @e'0 as part of 2=/0establishment and is stored in the 2=/0 contet in the @e'0. The 1orrelation &8 is used in the @e'0 for matchin

the radio bearers with the direct user plane path connections from the collocated 5=G?.

&f the 2 is roamin and if the @"" indicates 5&P roamin allowed for this 2 in this BP5M'- then the BP5M' (i.e.

MM2) may provide 5&P for this 2. 7urthermore- in the absence of any 5&P information for the reDuested P'from the @""- the BP5M' (i.e MM2) shall not provide 5&P. The BP5M' address allowed fla is not considered

when establishin a 5&P P8' connection.

5&P is supported for P's that are valid only when the 2 is connected to a specific 1"G. 5&P is also supported for

LconditionalL P's that can be authori!ed to 5&P service when the 2 is usin specific 1"G. P's mar#ed as L5&P prohibitedL or without a 5&P permission indication cannot be used for 5&P.

MM2 shall release a 5&P P8' connection to an P' if it detects that the 2$s 5&P 1"G authori!ation data for thisP' has chaned and the 5&P P8' connection is no loner allowed in the current cell.

s mobility of the 5&P P8' connection is not supported in this release of the specification- the 5&P P8' connectionshall be released when the 2 moves away from @(e)'0. 0efore startin the handover procedure towards the taret

/'- the @(e)'0 shall reDuest usin an intra=node sinallin the collocated 5=G? to release the 5&P P8'connection. The @(e)'0 determines that the 2 has a 5&P P8' connection from the presence of the 1orrelation &8 in

the 2 (2=)/0 contet. The 5=G? shall then initiate and complete the release of the 5&P P8' connection usin theP8' G? initiated bearer deactivation procedure as per clause 9.;.;., or GG"' initiated P8P contet deactivation

procedure as specified in T" *3.+:+ J<K. The @(e)'0 shall not proceed with the handover preparation procedure

towards the taret /' until the 2$s (2=)/0 contet is clear for the 1orrelation &8.

t the handover- the source MM2 chec#s whether the 5&P P8' connection has been released. &f it has not beenreleasedH

= and the handover is the ",=based handover or the &nter=/T handover- the source MM2 shall reject thehandover.

= and the handover is F*=based handover- the MM2 shall send a Path "witch /eDuest 7ailure messae (see moredetail in T" 3:.;,3 J3:K) to the taret @e'0. The MM2 performs eplicit detach of the 2 as described in the

MM2 initiated detach procedure of clause 9.3.>.3.

'OT2 *H The direct sinallin (implementation dependent) from the @(e)'0 to the 5=G? is only possible since

mobility of the 5&P P8' connection is not supported in this release.

8urin idle state mobility events- the MM2A"G"' shall deactivate the 5&P P8' connection when it detects that the

2 has moved away from the @e'0.

4.3.1 Su%%"rt "r Machi'e T;%e +"66u'icati"'s (MT+)

4.3.1.1 Ge'era$

This clause provides an overview about functionality for Machine Type 1ommunications accordin to service

reDuirements described in T" **.3:> J::K. The specific functionality is described in the affected procedures and featuresof this and other specifications. 7or discrepancies between this overview clause and the detailed procedure and function

descriptions- the latter ta#e precedence.

MT1 functionality is provided by the visited and home networ#s when the networ#s are confiured to support machine

type communication. &t applies to both the non=roamin case and the roamin case and some functionality may bedependent upon the eistence of appropriate roamin areements between the operators.

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"ome of the MT1 functions are controlled by subscriber data. Other MT1 functions are based on indicators sent by the2 to the networ#. MT1 functionality is performed by 2s that are confiured to support different options as described

in clause ;.3.,<.;.

Thouh motivated by scenarios and use cases defined in T" **.3:> J::K- the functions added to support MT1 have

eneral applicability and are in no way constrained to any specific scenario or use case ecept where eplicitly stated.

4.3.1.2 85er5ie " %r"tecti"' r"6 P"te'tia$ MT+ Re$ate# 85er$"a#

The number of MT1 devices may be several orders of manitude reater than LtraditionalL devices. Many (but not all)

MT1 devices will be relatively stationary andAor enerate low volumes of traffic. @owever- these 2s have thecapability to enerate normal Duantities of sinallin. s normal sinallin from lare numbers of 2s may cause

overload independently whether the 2 is used for MT1 or not- eneric functionality for overload and conestioncontrol is reDuired.

The total sinallin from lare numbers of 2s is a concern in at least two situationsH

= when an application (runnin in many 2s) reDuests many 2s to do LsomethinL at the same timeI andAor

= when many 2s are roamers and their servin networ# fails- then they can all move onto the local competinnetwor#s- and potentially overload the not (yet) failed networ#(s).

To counter these potential problems- the followin standardised indications and mechanisms are provided in a enericmanner. These permit node specific features to be developed to protect the networ#s.

a) ?here applicable- 2s can be confiured for enhancements as described in subseDuent bullets Post=manufacturin confiuration can be performed remotely as described in clause ;.3.,<.;.

b) 7or mobile oriinated services- 2s confiured for low access priority provide the 2=T/' with informationindicatin that the //1 connection establishment reDuest has low access priority (see clause ;.3.,<.;).

1lause ;.3.,<.; describes when low access priority is not applicable.

c) //1 sinallin has the capability of providin $etended wait timers$ when rejectin messaes from 2s that

access the networ# with low access priority.

d) The MM2 can initiate rejection of //1 connection establishments in the 2=T/' for 2s that access the

networ# with low access priority as described in clause ;.3.<.;.,. &n addition- MM2 sinallin or OQM can

trier 2=T/' to initiate 2tended ccess 0arrin. These mechanisms are further described inclause ;.3.<.;.,.

e) Overload messaes from the MM2 to 2=T/' are etended to aid the /' in performin the functionality in

bullets b- c and d above.

f) 2s confiured with a lon minimum periodic P5M' search time limit (see T" *;.3:> J:CK) have an increased

minimum time in between their searches for more preferred P5M's.

'OT2 ,H 7ollowin the failure of a more preferred P5M'- 2s confiured as above miht chane to other local

competin networ#s. 2piry of this search timer will lead to the 2 re=attemptin to access the failednetwor#- and then- if that networ# has not yet recovered- reaccessin one of the local competinnetwor#s. se of a too short timer for the more preferred P5M' search can both prevent the failed

networ# from recoverin- and- impose more load on the local competin networ#s.

) t P5M' chane- 2s confiured to perform ttach with &M"& at P5M' chane (see T" *;.3:> J:CK) do thisrather than a T update with GT& (thus avoidin the need to reject the T update- and to reDuest the &M"&

followin the subseDuent ttach with GT&).

'OT2 *H &n the case of a networ# failure- this reduces the messae processin load on a local competin networ#

and hence ma#es that networ# more li#ely to survive the failure of the other networ#.

h) 7or mobile oriinated services- 2s confiured for low access priority (see T" *;.3:> J:CK) provide a low access

priority indication to the MM2 in '" sinallin that permit the MM2 to underta#e protective measures (e.. to

permit the MM2 to immediately command the 2 to move to a state where it does not need to enerate furthersinallin messaes andAor does not reselect P5M's)- as described in clause ;.3.<.;.,. 1lause ;.3.,<.; describeswhen low access priority is not applicable.

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i) sin Periodic T timer value sent by the @"" andAor 2 provided indication (bullet h above)- the MM2 canallocate a lon periodic T timer value to the 2. lon periodic T timer is li#ely to slow down the rate at

which a 2 detects a networ# failure and thus it slows down the rate of movement of 2s from a failed networ#to other local competin networ#s (see clause ;.3.,<.3).

j) Mechanisms for the MM2 and P=G? to detect conestion associated with a particular P' (see clauses

;.3.<.;.* and ;.3.<.9).

#) The addition of $bac# off timers$ to 2MM and 2"M sinallin messaes (e.. to rejection messaes). These

include some time randomisation to uard aainst a repeat of a load pea#. The MM2 should be able to apply this

behaviour on a per=P' basis. as described in clause ;.3.<.;.*

l) "inallin that permits the P=G? to reDuest the MM2 to enerate the above 2"M sinallin with $bac# off

timers$ (see clause ;.3.<.9).

m) n MM2 overload control mechanism to selectively limit the number of 8ownlin# 8ata 'otification reDuests

the "=G? sends to the MM2 for downlin# low priority traffic received for 2s in idle mode (seeclause ;.3.<.;.,a).

n) 2 confiured for specific handlin of the invalid "&M state- the Lforbidden P5M' listL- the Lforbidden

P5M's for attach in ",mode listL and the Lforbidden P5M's for GP/" service listL remembers that the "&Mis invalid and #eeps the P5M' forbidden lists even if the 2 is switched off and then switched on.

o) ?hen the 2 has an activated P8' connection without low access priority or the 2 is reDuested to establish

such a P8' connection and the 2 is confiured with a permission for overridin low access priority the 2doesn$t provide a low access priority indication to the MM2 in '" MM sinallin and also not to the /' in

the //1 reDuests. &n the '" reDuest for activatin a P8' connection this 2 always indicates what the upperlayers reDuested- i.e. the 2 indicates low access priority in that '" reDuest unless the upper layers reDuest

activation of a P8' connection without low access priority.

p) ?hen the 2 has an activated P8' connection that is without low access priority or the 2 is reDuested to

activate such a P8' connection and the 2 is confiured with a permission for overridin 2tended ccess

0arrin- then the 2 inores any 2tended ccess 0arrin (if it is activated in the networ#) as defined inT" **.+,, J:<K.

'OT2 3H &t is assumed that the mechanisms described in this entire clause are desined by "tae 3 in a manner that

allows etensibility and forward compatibility.

D) The e'ode0 may use the low access priority indication provided by the 2 to steer 2s confiured for low

access priority to specific MM2s.

4.3.1.3 8%ti6iFi'g %eri"#ic T&U Sig'a$$i'g

To reduce networ# load from periodic T sinallin and to increase the time until the 2 detects a potential need for

chanin the /T or P5M' (e.. due to networ# problems) the loner values of the periodic T timer and Mobile/eachable timer shall be supported.

lon periodic /AT timer value may be locally confiured at MM2 or may be stored as part of the subscriptiondata in @"". 8urin ttach and T procedures the MM2 allocates the periodic /AT timer value as periodic

T timer to the 2 based on BP5M' operator policy- low access priority indication from the 2- periodic/AT timer value reDuested by 2 and subscription information received from the @"".

&f MM2 receives a subscribed periodic /AT timer value from the @"" it allocates the subscribed value to the 2

as periodic T timer. visited P5M' MM2 may use subscribed periodic /AT timer value- if available- as an

indication to decide for allocatin a locally confiured periodic /AT timer value to the 2.

4.3.1.4 UE c"'igurati"' a'# usage " i'#icat"rs

subscriber can by areement with its operator be reDuired to use 2s that are confiured (see T" *;.3:> J:CK) to

support one or more of the followin optionsH

= 2 confiured for low access priorityI andAor

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= 2 confiured with a permission for overridin low access priority- which is only applicable for a 2 that isalso confiured for low access priorityI andAor

= 2 confiured to perform ttach with &M"& at P5M' chaneI andAor

= 2 confiured with a lon minimum periodic P5M' search time limitI andAor

= 2 confiured for specific handlin of the invalid "&M state- the Lforbidden P5M' listL- the LforbiddenP5M's for attach in ",mode listL and the Lforbidden P5M's for GP/" service listLI andAor

= 2 confiured for 2tended ccess 0arrinI andAor

= 2 confiured with a permission for overridin 2tended ccess 0arrin- which is only applicable for a 2 that

is also confiured for 2tended ccess 0arrin.

'OT2 ,H ?hen a 2 is accessin the networ# with low access priority- then the 2 may be subject for loner

bac#off timers at overload and conseDuently need to be desined to be tolerant to delays when accessinthe networ#.

2s can be confiured for one or more of the above options with the followin restrictionsH

= in this /elease of the specification- a 2 that is confiured for low access priority shall also be confiured for2tended ccess 0arrinI and

= in this /elease of the specification- a 2 that is confiured for 2tended ccess 0arrin shall be confiured forlow access priority.

= in this /elease of the specification- a 2 that is confiured for overridin low access priority shall also be

confiured for overridin 2tended ccess 0arrinI and

= in this /elease of the specification- a 2 that is confiured for overridin 2tended ccess 0arrin shall also be

confiured for overridin low access priority.

2s can be confiured for one or more of the above options. Post=manufacturin confiuration of these options in the

2 can be performed only by OM 8M or ()"&M OT procedures. 2s capable of the above options should support

confiuration of these options by both OM 8M and ()"&M OT procedures.

2 confiured for low access priority shall transmit the low access priority indicator to the MM2 durin theappropriate '" sinallin procedures and transmit the correspondin low access priority to the 2=T/' durin

//1 connection establishment procedures.

'OT2 *H The low access priority indicator in '" sinallin and the correspondin low access priority for //1

connection establishment are only used by the networ# to decide whether to accept the '" reDuest orthe setup of the //1 connection respectively.

5ow access priority shall not be applicable in the followin situationsH

= for all procedures related to an emerency P8' connectionI used for &M" 2merency sessions that are to be

prioriti!ed as per the reDuirements for &M" 2merency session procedures (see clause ;.3.,*). ?hen anemerency P8' connection ets established- the MM2 may- based on MM2 confiuration- initiate the

deactivation of any non=emerency P8' connection usin the MM2 reDuested P8' disconnection proceduredescribed in clause 9.,+.3I

= for all procedures when preferential access to the networ# is provided to the 2 by the ccess 1lass ,,=,9mechanism accordin to T" 3:.33, J3<K and T" **.+,, J:<K e.. for Multimedia Priority "ervices as described in

clause ;.3.,>I

'OT2 3H The confiuration of a 2 for low access priority and ccess 1lass ,,=,9 are confiured independently

of each other. @owever- the home operator can ta#e care to prevent a subscription for ccess 1lass ,,=,9from bein used in a 2 confiured for low access priority.

= for //1 connection establishment procedures when respondin to painI

= for a 2 confiured with a permission for overridin low access priority under conditions described by bullet o

in clause ;.3.,<.*I or

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= other specific situations described in T" *;.3+, J;:K.

&f the '" session manaement reDuest messae used to establish a new P8' connection contains a low access priority

indication- the MM2 shall forward the low access priority indication in the 1reate "ession /eDuest messae to the "=G?AP=G?. The low priority indication ets associated with a P8' connection when it is established and it shall not

chane until the P8' connection is deactivated.

The low access priority indication may be included in charin records by the visited and home networ#s. &n order to permit the "=G? to include the low access priority indicator in the charin records- the low access priority indicator

should be stored in the MM2 2P" 0earer contets and should be passed as part of these contets to other "G"'AMM2

or "=G? nodes in mobility manaement procedures.

'OT2 ;H &n this release there is no other usae of storin the low access priority indicator in 2P" 0earer contets

other than for the purpose to include it in charin records. Particularly- the low access priority indicatorin 2P" 0earer contets is not used by the networ# to ma#e overload control decisions.

networ# node may invo#e one or more of the followin mechanisms based on the indicators received in sinallinfrom 2s or forwarded by other networ# nodesH

= based on the low access priority indicator in '" reDuest messaes- bullets e- h- i- # and l as defined in

clause ;.3.,<.*I andAor

= based on the low access priority for //1 connection establishment- bullets b and c as defined in clause ;.3.,<.*.

2 shall invo#e one or more of the followin mechanisms based on the confiuration and capabilities of the 2H

= when 2 is confiured with a lon minimum periodic P5M' search time limit- the 2 invo#es actions asdescribed in bullet f in clause ;.3.,<.*I andAor

= when 2 is confiured to perform ttach with &M"& at P5M' chane- the 2 invo#es actions as described in bullet in clause ;.3.,<.*I andAor

= when a 2 is confiured for low access priority- the 2 invo#es actions as described in bullets b and h inclause ;.3.,<.*I andAor

= when 2 is confiured for specific handlin of the invalid "&M state- the Lforbidden P5M' listL- theLforbidden P5M's for attach in ",mode listL and the Lforbidden P5M's for GP/" service listL- the 2 invo#es

actions as defined in bullet n in clause ;.3.,<.*I andAor

= when 2 is confiured for 2tended ccess 0arrin- the 2 invo#es actions as defined in bullet d in

clause ;.3.,<.*I andAor

= when a 2 is confiured with a permission for overridin low access priority and confiured with a permission

for overridin 2tended ccess 0arrin- the 2 invo#es actions as described in bullets o) and p) inclause ;.3.,<.*.

4.3.1.! V"i#

4.3.1. Su%%"rt " UEs c"'igure# "r $" access %ri"rit;, E/te'#e# &ccess Carri'ga'# %er6issi"' "r "5erri#e

The feature is specified in T" *3.+:+ J<K clause 9.3.,3.:.

4.3.1< Mu$ti6e#ia Pri"rit; Ser5ice

4.3.1<.1 Ge'era$

Multimedia Priority "ervice (MP") allows certain subscribers (i.e. "ervice sers as per T" **.,93 J:>K) priority accessto system resources in situations such as durin conestion- creatin the ability to deliver or complete sessions of a hih

priority nature. "ervice sers are overnment=authori!ed personnel- emerency manaement officials andAor otherauthori!ed users. MP" supports priority sessions on an Lend=to=endL priority basis.

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MP" is based on the ability to invo#e- modify- maintain and release sessions with priority- and deliver the prioritymedia pac#ets under networ# conestion conditions. MP" is supported in a roamin environment when roamin

areements are in place and where reulatory reDuirements apply.

'OT2 ,H &f a session terminates on a server in the &nternet (e.. web=based service)- then the remote end and the

&nternet transport are out of scope for this specification.

"ervice ser obtains priority access to the /adio ccess 'etwor# by usin the ccess 1lass 0arrin mechanismaccordin to T" 3:.33, J3<K and T" **.+,, J:<K. This mechanism provides preferential access to 2s based on its

assined ccess 1lass. &f a "ervice ser belons to one of the special access=classes as defined in T" **.+,, J:<K- the

2 has preferential access to the networ# compared to ordinary users in periods of conestion.

MP" subscription allows users to receive priority services- if the networ# supports MP". MP" subscription entitles a

"&M with special ccess 1lass(es). MP" subscription includes indication for support of 2P" bearer priority service-&M" priority service and 1" 7allbac# priority service support for the end user. Priority level reardin 2P" bearer and

&M" are also part of the MP" subscription information. The usae of priority level is defined in T" *3.*+3 J:K andT" *3.**> J9*K.

"ervice sers is treated as On 8emand MP" subscribers or not- based on reionalAnational reulatory reDuirements. On8emand service is based on "ervice ser invocationArevocation eplicitly and applied to the P8' connections for an

P'. ?hen not On 8emand- MP" service does not reDuire invocation- and provides priority treatment for all 2P" bearers for a iven "ervice ser after attachment to the 2P" networ#.

'OT2 *H cordin to reionalAnational reulatory reDuirements and operator policy- On=8emand MP" "ervicesers can be assined the hihest priority.

7or this release of the specification- MP" is supported for 2=T/' access only in case of 3GPP accesses.

"ince the "ervice ser has an access class within the rane for priority services- the 2stablishment 1ause in //1

connection reDuest is set to hihPriorityccess. ?hen the MM2 receives and verifies mobile initiated sinallin withestablishment cause set to hihPriorityccess- the MM2 and e'ode0 prioriti!e //1 connection reDuests and establish

the ", bearer and radio resources with priority.

Priority treatment for MP" session reDuires appropriate /P and E1& (where necessary for non=G0/ bearers) settin

for bearers accordin to the operator$s policy.

?hen an MP" session is reDuested by a "ervice ser- the followin bearer manaement principles apply in the

networ#H

= 2P" bearers (includin default bearer) employed in an MP" session shall be assined /P value settins

correspondin to the priority level of the "ervice ser.

= "ettin /P pre=emption capability and vulnerability for MP" bearers- subject to operator policies and

dependin on nationalAreional reulatory reDuirements.

= Pre=emption of non="ervice sers over "ervice sers durin networ# conestion situation- subject to operator

policy and nationalAreional reulations.

Priority treatment is applicable to &M" based multimedia services- priority 2P" bearer services (P" data without &M"

interaction) and 1" 7allbac#.

7or Multimedia Priority services any 2P1 functions- procedures and capabilities are provided accordin to clause this

specification ecept when specified differently in the followin subsections.

4.3.1<.2 :MS-ase# Mu$ti6e#ia Pri"rit; Ser5ices

4.3.1<.2.1 8rigi'ati'g :MS-ase# MPS Sessi"'

&M" based MP" sessions are permitted to be oriinated from any 2- in addition to MP"=subscribed 2s.

The MP"=subscribed 2- based on the MP" &M" subscription information- operator$s policy and nationalAreionalreulations- may be iven priority treatment for the default bearer and the 2P" bearer carryin &M" sinallin in the2P" prior to and durin &M"=based MP" invocation. 7urther- priority treatment in the 2P" for sinallin and media

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bearers may be modifiedAestablished via dynamic P11 based on the session authori!ation information received from the7.

s the &M" media bearer is established after the &M" session of the MP" service has been established- it can beassined with correct /P value when it is established. @owever &M" sinallin related 2P" bearer needs to be

upraded if it has not been assined with the appropriate /P settin for the MP" service when the &M" session of the

MP" service has been initiated.

lso to avoid cases where the default bearer may not be allocated resources in the handover case- due to the low /P

priority for the MP" service related P8' connection- it is necessary to assure the /P value of the default bearer

receives the appropriate /P settin for MP" service.

4.3.1<.2.2 Ter6i'ati'g :MS-ase# MPS Sessi"'

The terminatin networ# identifies the priority of the &M"=based MP" session and applies priority treatment to ensurethat the call is delivered with priority to the terminatin user (either a "ervice ser or normal user).

&f the eistin /P of the default or dedicated 2P" bearer that is used to transport &M" sinallin are not appropriatefor MP"- then P1/7 updates to the appropriate settins.

"=G? triers a new priority pain towards MM2 in case the onoin pain is lower priority than the incomin datareceived in the "=G? for &M" terminatin session.

4.3.1<.3 Pri"rit; EPS Cearer Ser5ices

The "ervice ser receives on demand priority treatment accordin to its MP" profile- i.e. On=8emand. &f the "erviceser is not authori!ed to use on=demand priority reDuest- the "ervice ser receives priority treatment (i.e. appropriate

/P and E1& ) at initial attach for all bearers- based on user profile data stored in the @""A"P/ and authori!ed by theP1/7 (see T" *3.*+3 J:K- clause <.*).

n On=8emand "ervice ser reDuires eplicit invocationArevocation via "P/ MP" user profile update- whichcommunicates with P11 to upradeAdownrade. "ince MP" user profile are part of inputs for P11 rules- the update

will trier P11 rules modification- installation. (see T" *3.*+3 J:K- clause <.;.*).

0ased on MP" 2P" priority subscription- MM2 can verify whether the 2 is permitted to initiate the //1 connection

with hiher priority and handle the reDuest preferentially comparin to other 2s not prioriti!ed.

n 7 for MP" Priority "ervice is used to provide Priority 2P" 0earer "ervices usin networ#=initiated resource

allocation procedures (via interaction with P11) for oriinatin accesses.

'OT2H se of 3rd party 7 for MP" services for "ervice sers is outside the scope of 3GPP specification.

4.3.1<.4 +S a$$acB

1" 7allbac# allows users to fallbac# to G2/'AT/'A, /TT while in 2=T/' access thus allowin the networ#to transfer the call towards G2/'AT/' 1" domain. &n order to ensure that a priority 1"70 call toAfrom a service

user is iven proper priority treatment in the 2P"- MP" subscription indicates the user$s 1" priority status- i.e. MP" 1"Priority- which is provided to MM2 with user$s subscription information. ?hen the MM2 receives and verifies mobile

initiated sinallin with establishment cause set to hihPriorityccess- the MM2 and e'ode0 prioriti!e //1connection reDuests and establish the ", bearer and radio resources with priority.

8etails on the priority treatment of 1"70- see T" *3.*<* J9>K.

4.3.1<.! *et"rB +"'gesti"' +"'tr"$s "r MPS

0ased on reionalAnational reDuirements and networ# operator policy- MP" shall be eempted from networ# conestion

controls up to the point where further eemptions cause networ# instability. The MM2 should not apply '" levelconestion control for mobile initiated sinallin with establishment cause set to hihPriorityccess. The MM2 should

not apply conestion control for termination reDuests related with an /P associated with MP".

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4.3.1<. L"a# Re-a$a'ci'g etee' MMEs "r MPS

?hen a 2 is in 21M=1O''21T28 mode with a bearer havin an /P associated with MP"- the MM2 should notrelease the 2 for load re=balancin- ecept under critical conditions such as the need to perform an MM2 node restart.

The MM2 should wait until the 2 initiates a T or becomes 21M=&852 before initiatin load re=balancin.

4.3.1 +"re *et"rB '"#e res"$uti"'

4.3.1.1 Ge'era$

The indication of mapped or native GT& shall be sinalled by the 2 to the MM2 as an eplicit indication in ttach

/eDuest and T /eDuest messaes. The indication of mapped or native P=TM"&A/& shall be sinalled by the 2 tothe "G"' as an eplicit indication in ttach /eDuest and / /eDuest messaes. The MM2A"G"' resolves the old

MM2A"G"' usin old GT& respective old P=TM"&A/& sent in the ttach reDuest and TA/ reDuest messaes -and determines if the old GT& or the old P=TM"&A/& is mapped or native by one of the followin two methodsH

= &ndication usin most sinificant bit (M"0) in 51 and MM2 Group &8.

= 2plicit indication sent from 2 to MM2 and "G"'.

4.3.1.2 MSC i' L&+ a'# MME Gr"u% :

7or P5M's deployed with such mechanism the MM2 differentiates between a GMM2& mapped from P=TM"&A/&and a native GMM2& based on the value of most sinificant bit of the MM2 Group &8I i.e. the M"0 is set to L+L then

the GMM2& is mapped from P=TM"&A/& and if M"0 is set to L,L- the GMM2& is a native one- as specified inT" *3.++3 JCK.

7or P5M's deployed with such mechanism the ";="G"' differentiates between a P=TM"&A/& mapped from GT&and a native P=TM"&A/& based on the value of most sinificant bit of the 51I i.e. the M"0 is set to L,L then the

P=TM"&A/& is mapped from GT& and if M"0 is set to L+L- the P=TM"&A/& is a native one- as specified inT" *3.++3 JCK.

4.3.1.3 E/%$icit :'#icati"'

7or P5M's deployed with such mechanism the MM2 differentiates between a GT& mapped from P=TM"&A/& or a

native GT& based on the eplicit indication sent by the 2.

7or P5M's deployed with such mechanism the ";="G"' differentiates between a P=TM"&A/& mapped from GT& ora native P=TM"&A/& based on the eplicit indication sent by the 2.

4.3.20 Re$a;i'g u'cti"'

4.3.20.1 Ge'era$

The relayin function enables an operator to improve and etend the coverae area by havin a /elay 'ode (/')wirelessly connected to an e'0 servin the /'- called 8onor e'0 (8e'0)- via a modified version of the 2=T/

radio interface called the n interface as specified in T" 3:.3++ J9K.

The relayin function and use of /'A8e'0 entities in a networ# is transparent to the operations of the 2s connected

to it and associated core networ# entities (e.. MM2- "AP=G?- P1/7 etc.) for the 2s.

The relayin architecture is shown in fiure ;.3.*+.,=,.

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MME(R*)

UERe$a;*"#e

e*CGA (R*)

S-GA(UE)

LTEUu

S1(R*)

U' S1-U

SGiS11(R*) P-GA(UE)

S!S<

S11UE

MME(UE)

S1-MME(UE)

0i1ure '3'&'%$%2 Relayin1 Architecture

'OT2 ,H &mpact to core networ# elements from the introduction of /'s and 8e'0 is minimi!ed by reusin the

eistin nodes and protocols when interactin with the core networ#.

'OT2 *H 7unctions of the MM2 for the /' and MM2 for the 2 may be collocated in a sinle MM2.

The /' supports the e'0 functionality li#e termination of the radio protocols of the 2=T/ radio interface and the ",and F* interfaces. The /' also supports a subset of the 2 functionality and protocols to wirelessly connect to the

8e'0.

&n addition to supportin e'0 functionality- the 8e'0 also embeds and provides the "=G?AP=G?=li#e functions

needed for the /' operation. This includes creatin a session for the /' and manain 2P" bearers for the /' asshown in clause ;.3.*+.3- as well as terminatin the ",=P and ",, interfaces towards the MM2 servin the /'. 8ue to

the proy functionality- the 8e'0 appears as an MM2 (for ",)- an e'0 (for F*) and an "=G? to the /'.

The /' and 8e'0 also perform mappin of sinallin and data pac#ets onto 2P" bearers that are setup for the /'.The mappin is based on eistin Eo" mechanisms defined for the 2 and the P=G? and are described in

T" 3:.3++ J9K.

4.3.20.2 R* startu% a'# attach %r"ce#ure

4.3.20.2.1 Ge'era$

The startup procedure for the /elay 'ode is based on the normal 2 attach procedure and consists of the followin two

phasesH

= Phase &H ttach for /' preconfiuration.

= Phase &&H ttach for /' operation (MM2 of the /').

'OT2H ?hen the certificate=based solution is used- the /' uses "&M=&'& in Phase & and "&M=/' in Phase &&

with necessarily different &M"&s. ?hen pre=shared #ey is used- there is only need for one "&M and the/' uses the same &M"& durin Phase & and Phase &&. The MM2 does not treat certificate=based and pre=

shared #ey=based solution differently. The use of the certificate=based and pre=shared #ey solutions isspecified in nne 8 of T" 33.;+, J;,K.

4.3.20.2.2 &ttach "r R* %rec"'igurati"'

The /' attaches to the 2=T/'A2P1 as a 2 at power=up (i.e. the /' shall not include the /' indication in the//1 1onnection establishment sinallin). The e'0 treats the /' as a normal 2 when performin MM2 selection.

0ecause the e'0 does not indicate that this is a /' in the ", interface &nitial 2 messae- the MM2 does not performany further /' specific actions (e.. it inores any indication from the @"" that Lthis subscription includes a permissionto operate as a /'L).

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The authentication of the L/' actin as an 2L is performed by the MM2 durin this attach procedure- usin theinformation obtained from the @"".

The MM2 performs the "=G? and P=G? selection as for a normal 2.

'OT2H &t is the responsibility of the @"" operator to ensure that the /' subscription includes an P'

confiuration that ensures that the /' subscription cannot be used for other purposes- e.. only a sinle

P' is confiured for the use of /'s in phase &- and- that this P' is reserved for /'s only.

The /' retrieves initial /' confiuration parameters as user plane traffic- across the "Gi reference point- from /'OM (e.. list of 8e'0 cells and selected P5M').

fter this operation is complete- the /' detaches from the networ# usin the normal 2 initiated detach procedure- seeclause 9.3.>.*., and the /' triers Phase &&.

4.3.20.2.3 &ttach "r R* "%erati"'

To start relay operations- the normal attach procedure- with the followin eceptions- is appliedH

= The /' and the "&M=/' perform local security operations (e.. establishment of a secure channel between

them) as specified in T" 33.;+, J;,KI

= The /' selects a cell from the list acDuired durin Phase &I

= The /' establishes an //1 connection with the 8e'0- indicatin that the connection is for a /'I

= The 8e'0 is aware of the MM2s that support /' functionality. &n all cases when the /' indication is recieved-

the 8e'0 shall ensure that the current or (re)selected MM2 supports /' functionalityI

'OT2 ,H The /' follows normal 2 behaviour- e.. the /'$s '" may use either an &M"& or a GT&. lso- the/'$s '" may or may not provide an "=TM"& to the /'$s "- and hence- the //11onnection/eDuest

may either contain an "=TM"& or a random value.

= &n the ", interface &nitial 2 Messae- the the 8e'0 sends the /' indication to the MM2. This messae also

carries the &P address of the "=G?AP=G? function embedded in the 8e'0I

= The subscription data supplied to the MM2 by the @"" for "&M=/' includes an indication that the

subscription is permitted to be used by a /'.

= &f the ", interface &nitial 2 Messae indicates that this is a /'- but the subscription data does not indicate that

the subscription includes a permission to operate as a /'- then the MM2 shall reject the '" procedure (e..ttach /eDuest- Trac#in rea pdate /eDuest- "ervice /eDuest- etc) with an appropriate cause value (e.. one

that avoids retries on this P5M' yet does not harm a /' that has unepectedly performed P5M' reselection).

'OT2 *H &t is anticipated that the MM2 chec#s that the @P5M' of the "&M=/' is authorised to attach /'s to

this MM2.

= The MM2 and /' perform the normal 2P" uthentication procedures.

= MM2 (/') selects the "=G?AP=G? in 8e'0 for the /' based on the &P address included in the &nitial 2Messae (i.e. all G? selection and P' related procedures are bypassed durin this phase). The MM2 performs

",, interface sinallin with the "=G?AP=G? located in the 8e'0I

= The MM2 accepts the attach procedure and sets up an ", contet with the 8e'0.

?hen relay function is enabled- MM2s in a pool should all have the same relayin function capability in order to have

consistent support for functions such as redundancy- load balancin.

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R* e*C MME 7SS

1 . RR+ c"''ecti"' setu%

2 a . *&S &ttach , &uthe'ticati"' , Securit; , ... 2 . &uthe'ticati"' , Securit; , ...

3 . GTP - + +reate Sessi"'

4 . S 1 +"'te/t Setu%( *&S &ttach &cce%t ) 4 a . RR+ c"''ecti"' re - c"'ig .

0i1ure '3'&'&$%2 R" attach procedure

The detach procedure for the /' is the same as the normal 2 detach procedure- thouh the /' should ensure that no

2 is connected to the /' cells before detachin. &t is up to /' implementation how it ensures no 2 is connected.

4.3.20.3 e*C E-R&C acti5ati"'6"#iicati"'

This procedure is used by the 8e'0 to chane the 2P" bearer allocation for the /'. The procedure is the same as the

normal networ#=initiated bearer activationAmodification procedure with the eception that the "=G?AP=G?functionality (steps , and :) is performed by the 8e'0.

R* e*C MME

1 . GTP - + +reate U%#ate Cearer ReDuest

2 . S 1 - & P C e a r e r S e u % M " # i ; R e D u e s ( * & S S e s s i " ' M a ' a g e 6 e ' M e s s a g e )

4 . S 1 - &P Cearer Setu% M"#i; Res%"'se

! . irect Tra'ser( *&S Sessi"' Ma'age6e't Message )

3 . RR+ c"''ecti"' re - c"'ig .

! a . irect Tra'ser ( )

. GTP - + +reate U%#ate Cearer Res%"'se

0i1ure '3'&'3$%2 =e">$initiated 4earer activationmodification procedure

'OT2H &t is up to implementation if and when the 8e'0 sets up and modifies 2P" bearers for the /'- in addition

to the initial bearer set up procedures at ttach.

4.3.21 +"re *et"rB assiste# e*"#eC %ara6eters tu'i'g

4.3.21.1 +* &ssista'ce :'"r6ati"'

1ore 'etwor# assisted e'ode0 parameters tunin aids the e'ode0 to minimi!e the 2 state transitions and achieve

optimum networ# behaviour. 7or eample- if the 2 freDuently chanes its idleAactive states- /' could etend the//1 connection time of the 2 compared to a 2 rarely chanin its state. &n addition- /' could determine a loner

8/F cycle for the 2 in order to save the 2 battery consumption.

1ore 'etwor# ssistance information is data that may be derived by the e'ode0 andAor MM2 and cached in the 1'while the 2 is idle. ?hen a 2 becomes active (e.. ttach- "ervice /eDuest)- the cached information- if available-

shall be provided by the MM2 to the e'ode0.

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'OT2H &nformation can be enerated by the MM2 and passed to the e'ode0 durin establishment of a 2connection (e.. ttach- "ervice /eDuest). n eample could be the "ervice /eDuest rate.

4.3.21.2 R&* Ge'erate# &ssista'ce :'"r6ati"'

ssistance data may be sent in a transparent container from the e'ode0 to MM2 when the 2 connection is released. &f

this information is cached then it is provided bac# from MM2 to e'ode0 the net time the 2 becomes active. Thetransparent container is unchaned while cached in the MM2.

4.3.21.3 +"re *et"rB &ssista'ce Pr"ce#ures

The MM2 provides 1' andAor /' assistance information to the e'ode0 if available- durin the setup of the ",

sinallin connection (e..- ttach- "ervice /eDuest).

The followin fiure is a hih level description of the transfer of information from an e'ode0 to MM2 durin an ",

release procedure and from an MM2 to e'ode0 durin a service reDuest procedure.

e*C UE MME

8' - g"i'g sig'a$$i'g c"''ecti"'

R&* assista'ce #ata st"re# i' the UE?s MM +"'te/t

i' the MME

The e*C 6a; use assista'ce #ata "r re#uci'g

the 'u6er " c"''ecte# i#$e tra'siti"'s a'#

re#uci'g 6"i$it; re$ate# sig'a$$i'g aecti'g the

MME

Release ( R&* assista'ce #ata %r"5i#e# r"6 e*"#eC t" MME )

Service Re:uest 5 S % 9onnection ? Radio >earer sta4lishment ( R&* assista'ce #ata a'# +* assista'ce #ata %r"5i#e# t" e*"#eC ; MME )

+* assista'ce #ata %r"#uce# ; MME

UE is

i#$e

0i1ure '3'&%'3$%2 9ore "et#ork assisted e"ode> parameters tunin1

4.3.22 UE P"er Sa5i'g M"#e

2 may adopt a P"M that is described in T" *3.:>* J<;K. &f a 2 is capable of adoptin a P"M and it wants to use

the P"M it shall reDuest an ctive Time value and may reDuest a Periodic TA/ Timer value durin every ttach

and T procedures- which are handled as described in T" *3.:>* J<;K. The 2 shall not reDuest a Periodic TA/Timer value if it is not reDuestin an ctive Time value. The networ# shall not allocate an ctive Time value if the 2has not reDuested it.

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'OT2H The ttach and T procedures of this specification are not showin the details of the Periodic TTime and ctive Time neotiation- i.e. are not showin the related &2s.

&f the networ# allocates an ctive Time value- the 2 starts the ctive timer and the MM2 starts the mobile reachabletimer (see clause ;.3.9.*) with the ctive Time value allocated by the networ# when transitionin from

21M1O''21T28 to 21M&852. ?hen the ctive timer epires- the 2 deactivates its ccess "tratrum functions

and enters P"M. &n P"M- due to deactivation of ccess "tratum functions- the 2 stops all idle mode procedures- butcontinues to run any '" timers that may apply- e.. the periodic T timer. The 2 shall resume ccess "tratumfunctions and idle mode procedures before the periodic T timer epires for performin the periodic T procedure

as applicable. The 2 may resume idle mode procedures and ccess "tratum functions any time durin P"M- e.. formobile oriinated communications. ny timers and conditions that remain valid durin power=off- e.. for '"=level

bac#=off- apply in the same way durin P"M.

?hen the mobile reachable timer epires and the MM2 stores an ctive Time for the 2- the MM2 #nows that the 2

entered P"M and is not available for pain. The MM2 handles mobile reachable timer and availability for pain asdetailed in clause ;.3.9.*.

On 2 side the P"M complies with some substates of 2MM/2G&"T2/28- as specified in T" *;.3+,. The MM2considers the 2 to be 2MM/2G&"T2/28- but not reachable. The 2$s ccess "tratum functions are considered as

deactivated durin P"M.

4.4 *et"rB e$e6e'ts

4.4.1 E-UTR&*

2=T/' is described in more detail in T" 3:.3++ J9K.

&n addition to the 2=T/' functions described in T" 3:.3++ J9K- 2=T/' functions includeH

= @eader compression and user plane cipherinI

= MM2 selection when no routin to an MM2 can be determined from the information provided by the 2I

= 5 bearer level rate enforcement based on 2=M0/ and M0/ via means of uplin# schedulin(e.. by limitin the amount of 5 resources ranted per 2 over time)I

= 85 bearer level rate enforcement based on 2=M0/I

= 5 and 85 bearer level admission controlI

= Transport level pac#et mar#in in the uplin#- e.. settin the 8iff"erv 1ode Point- based on the E1& of theassociated 2P" bearerI

= 21'=based conestion control.

4.4.2 MMEMM2 functions includeH

= '" sinallinI

= '" sinallin securityI

= &nter 1' node sinallin for mobility between 3GPP access networ#s (terminatin "3)I

= 2 /eachability in 21M=&852 state (includin control and eecution of pain retransmission)I

= Trac#in rea list manaementI

= Mappin from 2 location (e.. T&) to time !one- and sinallin a 2 time !one chane associated withmobility-

= P8' G? and "ervin G? selectionI

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= pac#et screeninI

= sendin of one or more Lend mar#erL to the source "G? immediately after switchin the path durin "G?

chaneI

= P11 related features (e.. involvin P1/7 and O1") as described in T" *3.*+3 J:K.

dditionally the P8' G? includes the followin functions for the GTP=based "9A">H

= 5 and 85 bearer bindin as defined in T" *3.*+3 J:KI

= 5 bearer bindin verification as defined in T" *3.*+3 J:KI

= 7unctionality as defined in /71 ;>:, J3*KI

= ccountin per 2 and bearer.

The P=G? provides P8' connectivity to both G2/'AT/' only 2s and 2=T/' capable 2s usin any of

2=T/'- G2/' or T/'. The P=G? provides P8' connectivity to 2=T/' capable 2s usin 2=T/'only over the "9A"> interface.

4.4.4 SGS*

&n addition to the functions described in T" *3.+:+ J<K- "G"' functions includeH

= &nter 2P1 node sinallin for mobility between *GA3G and 2=T/' 3GPP access networ#sI

= P8' and "ervin G? selectionH the selection of "=G?AP=G? by the "G"' is as specified for the MM2I

= @andlin 2 Time None as specified for the MM2I

= MM2 selection for handovers to 2=T/' 3GPP access networ#.

4.4.! GER&*G2/' is described in more detail in T" ;3.+9, J,9K.

4.4. UTR&*

T/' is described in more detail in T" *9.;+, J,:K.

4.4. P+R

4.4..1 Ge'era$

P1/7 is the policy and charin control element. P1/7 functions are described in more detail in T" *3.*+3 J:K.

&n non=roamin scenario- there is only a sinle P1/7 in the @P5M' associated with one 2$s &P=1' session. TheP1/7 terminates the / interface and the G interface.

&n a roamin scenario with local brea#out of traffic there may be two P1/7s associated with one 2$s &P=1' sessionH

= @=P1/7 that resides within the @=P5M'I

= B=P1/7 that resides within the B=P5M'.

4.4..2 7"6e P+R (7-P+R)

The functions of the @=P1/7 includeH

= terminates the / reference point for home networ# servicesI

= terminates the "C reference point for roamin with local brea#outI

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= associates the sessions established over the multiple reference points ("C- /)- for the same 2$s &P=1'session (P11 session bindin).

The functionality of @=P1/7 is described in T" *3.*+3 J:K.

4.4..3 Visite# P+R (V-P+R)

The functions of the B=P1/7 includeH

= terminates the G and "C reference points for roamin with local brea#outI

= terminates / for roamin with local brea#out and visited operator$s pplication 7unction.

The functionality of B=P1/7 is described in T" *3.*+3 J:K.

4.4.< P* GA9s ass"ciate# &&& Ser5er

The P8' Gateway may interact with a server over the "Gi interface. This "erver may maintain informationassociated with 2 access to the 2P1 and provide authori!ation and other networ# services. This "erver could be

a /8&" or 8iameter "erver in an eternal P8' networ#- as defined in T" *C.+:, J3>K. This "erver is loicallyseparate from the @"" and the 3GPP "erver.

4.4. 7e*C sus;ste6

@e'0 subsystem consists of a @e'0- optionally a @e'0 G? and optionally a 5ocal G?.

The 5ocal &P ccess and "&PTO at the 5ocal 'etwor# with 5=G? function collocated with the @e'0 functions areachieved usin a 5ocal G? (5=G?) colocated with the @e'0.

7iure ;.;.C=, illustrates the architecture for 5&P andAor "&PTO at the 5ocal 'etwor# with 5=G? function collocatedwith the @e'0.

S1-U S! SGi

L-GA

UE

S1-MME S11Uu

7e*C SGA

MME

SGi

P* GA

S!

L:P& "rS:PT8HL*user %$a'e

0i1ure ''/$%2 Architecture for @7PA or S7PT at the @ocal "et#ork #ith @$GB collocated #ith thee">

'OT2 ,H The optional @e'0 G? is not shown in the fiure for simplicity.

The @e'0 subsystem is connected by means of the standard ", interface to the 2P1 (2volved Pac#et 1ore)- morespecifically to the MM2 (Mobility Manaement 2ntity) by means of the ",=MM2 interface and to the "ervin Gateway

("=G?) by means of the ",= interface. ?hen 5&P or "&PTO at the 5ocal 'etwor# with 5=G? function collocated

with the @e'0 is activated- the 5=G? has a "9 interface with the "=G?.

'OT2 *H &n this specification and for simplification the term e'ode0 refers to the @e'0 subsystem if the 2accesses the networ# via a @e'0 unless stated otherwise.

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'OT2 3H 8etailed functions of @e'0 and @e'0 G? are described in T" 3:.3++ J9K.

'OT2 ;H n 5=G?collocated with a @e'0 may support 5&P- or "&PTO5'- or both.

The 5ocal G? is the ateway towards the &P networ#s (e.. residentialAenterprise networ#s- &nternet) associated withthe @e'0. The 5ocal G? has the followin P8' G? functionsH

= 2 &P address allocationI

= 8@1Pv; (server and client) and 8@1Pv: (client and server) functionsI

= Pac#et screeninI

= 7unctionality as defined in /71 ;>:, J3*K.

dditionally- the 5ocal G? has the followin functionsH

= 21M=&852 mode downlin# pac#et bufferinI

= 21M=1O''21T28 mode direct tunnellin towards the @e'0.

'OT2 9H The architecture for "&PTO at the 5ocal 'etwor# with 5=G? function collocated with a @e'0 depictedin 7iure ;.;.C=, also applies to "&PTO at the 5ocal 'etwor# with 5=G? function collocated with an

e'0.

4.4.10 e*C

8e'0 function is described in more detail in T" 3:.3++ J9K.

8e'0 provides the necessary "AP=G? functions for the operation of /'s connected to the 8e'0.

&n order to provide the /elay 7unction the 8e'0 shall support the followin P=G? functionsH

= &P address allocation for the 2 functionality of the /'I

= 8ownlin# transport level pac#et mappin between the 8"1P value used over ",= of the 2 (which is the "Giinterface of the PG? function in the 8e'0) and the 2P" bearers with an appropriate E1& value established

between the PG? function in the 8e'0 and the 2 function of the /'I

= plin# transport level pac#et mappin between E1& value of the 2P" bearers (established between the PG?

function in the 8e'0 and the 2 function of the /') and the 8"1P value used over ",= of the 2 (which isthe "Gi interface of the PG? function in the 8e'0).

&n order to provide the /elay 7unction the 8e'0 shall support the followin "=G? functionsH

= Termination the ",, session of the MM2(/').

"=G? functions related to 21M=&852 are not reDuired.

"=G? functions related to mobility manaement are not supported.

4.4.11 +SG Suscrier Ser5er

1"G "ubscriber "erver (1"") is an optional element that stores 1"G subscription data for roamin subscribers. The1"" stores and provides BP5M' specific 1"G subscription information to the MM2. The 1"" is accessible from the

MM2 via the "<a interface. The 1"" is always in the same P5M' as the current MM2.

&f the same 1"G &8 eists in both 1"" subscription data and @"" subscription data- the 1"G subscription data from the

@"" shall ta#e precedence over the data from 1"".

7iure ;.;.,,=, illustrates 1"" connected to MM2.

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0i1ure ''%%$%2 9SS connected to 88

4.! V"i#

4. EPS M"i$it; Ma'age6e't a'# +"''ecti"' Ma'age6e't states

4..1 Ge'era$

The 2P" Mobility Manaement (2MM) states describe the Mobility Manaement states that result from the mobility

manaement procedures e.. ttach and Trac#in rea pdate procedures.

Two 2MM states are described in this documentH

= 2MM=82/2G&"T2/28.

= 2MM=/2G&"T2/28.

'OT2 ,H Other specifications may define more detailed 2MM states (see e.. T" *;.3+, J;:K).

The 2P" 1onnection Manaement (21M) states describe the sinallin connectivity between the 2 and the 2P1.

Two 21M states are described in this documentH

= 21M=&852.

= 21M=1O''21T28.

'OT2 *H The 21M=1O''21T28 and 21M=&852 states used in this document correspond respectively to the

2MM=1O''21T28 and 2MM=&852 modes defined in T" *;.3+, J;:K.

&n eneral- the 21M and 2MM states are independent of each other. Transition from 2MM=/2G&"T2/28 to 2MM=82/2G&"T2/28 can occur reardless of the 21M state- e.. by eplicit detach sinallin in 21M=1O''21T28 or

by implicit detach locally in the MM2 durin 21M=&852. @owever there are some relations- e.. to transition from

2MM=82/2G&"T2/28 to 2MM=/2G&"T2/28 the 2 has to be in the 21M=1O''21T28 state.

4..2 ei'iti"' " 6ai' EPS M"i$it; Ma'age6e't states

4..2.1 EMM-EREG:STERE&n the 2MM=82/2G&"T2/28 state- the 2MM contet in MM2 holds no valid location or routin information for the

2. The 2 is not reachable by a MM2- as the 2 location is not #nown.

&n the 2MM=82/2G&"T2/28 state- some 2 contet can still be stored in the 2 and MM2- e.. to avoid runnin an

% procedure durin every ttach procedure.

8urin the successful &nter=/T TA/Ahandover procedure and &"/ activated is not indicated to the 2- the old

"; "G"'Aold MM2 chanes the 2MM state of the 2 to GP/"=&852APMM=82T1@28A2MM=82/2G&"T2/28.

4..2.2 EMM-REG:STERE

The 2 enters the 2MM=/2G&"T2/28 state by a successful reistration with an ttach procedure to either 2=T/'

or G2/'AT/'. The MM2 enters the 2MM=/2G&"T2/28 state by a successful Trac#in rea pdate procedurefor a 2 selectin an 2=T/' cell from G2/'AT/' or by an ttach procedure via 2=T/'. &n the 2MM=

/2G&"T2/28 state- the 2 can receive services that reDuire reistration in the 2P".

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'OT2H The 2 employs a sinle combined state machine for 2MM and GMM states.

The 2 location is #nown in the MM2 to at least an accuracy of the trac#in area list allocated to that 2 (ecludin

some abnormal cases).

&n the 2MM=/2G&"T2/28 state- the 2 shallH

= always have at least one active P8' connectionI

= setup the 2P" security contet.

fter performin the 8etach procedure- the state is chaned to 2MM=82/2G&"T2/28 in the 2 and in the MM2.pon receivin the T /eject and ttach /eject messaes the actions of the 2 and MM2 depend upon the $cause

value$ in the reject messae- but- in many cases the state is chaned to 2MM=82/2G&"T2/28 in the 2 and in theMM2.

&f all the bearers belonin to a 2 are released (e..- after handover from 2=T/' to non=3GPP access)- the MM2shall chane the MM state of the 2 to 2MM=82/2G&"T2/28. &f the 2 camps on 2=T/' and the 2 detects

that all of its bearers are released- the 2 shall chane the MM state to 2MM=82/2G&"T2/28. &f all the bearers (P8Pcontets) belonin to a 2 are released- while the 2 camps on G2/'AT/'- the 2 shall deactivate &"/ by

settin its T&' to LP=TM"&L as specified in T" *3.+:+ J<K. This ensures that the 2 performs Trac#in rea pdatewhen it re=selects 2=T/'. &f the 2 switches off its 2=T/' interface when performin handover to non=3GPP

access- the 2 shall automatically chane its MM state to 2MM=82/2G&"T2/28.

The MM2 may perform an implicit detach any time after the &mplicit 8etach timer epires. The state is chaned to

2MM=82/2G&"T2/28 in the MM2 after performin the implicit detach.

4..3 ei'iti"' " EPS +"''ecti"' Ma'age6e't states

4..3.1 E+M-:LE

2 is in 21M=&852 state when no '" sinallin connection between 2 and networ# eists. &n 21M=&852 state-a 2 performs cell selectionAreselection accordin to T" 3:.3+; J3;K and P5M' selection accordin to T" *3.,** J,+K.

There eists no 2 contet in 2=T/' for the 2 in the 21M=&852 state. There is no ",MM2 and no ",

connection for the 2 in the 21M=&852 state.

&n the 2MM=/2G&"T2/28 and 21M=&852 state- the 2 shallH

= perform a trac#in area update if the current T is not in the list of Ts that the 2 has received from thenetwor# in order to maintain the reistration and enable the MM2 to pae the 2I

= perform the periodic trac#in area updatin procedure to notify the 2P1 that the 2 is availableI

= perform a trac#in area update if the //1 connection was released with release cause Lload balancin T

reDuiredLI

= perform a trac#in area update when the 2 reselects an 2=T/' cell and the 2$s T&' indicates LP=TM"&LI

= perform a trac#in area update for a chane of the 2$s 1ore 'etwor# 1apability information or the 2 specific

8/F parameterI

= perform a trac#in area update when the 2 manually selects a 1"G cell- and the 1"G &8 and associated P5M'of that cell is absent from both the 2$s llowed 1"G list and the 2$s Operator 1"G listI

= answer to pain from the MM2 by performin a service reDuest procedureI

= perform the service reDuest procedure in order to establish the radio bearers when uplin# user data is to be sent.

The 2 and the MM2 shall enter the 21M=1O''21T28 state when the sinallin connection is established betweenthe 2 and the MM2. &nitial '" messaes that initiate a transition from 21M=&852 to 21M=1O''21T28 state are

ttach /eDuest- Trac#in rea pdate /eDuest- "ervice /eDuest or 8etach /eDuest.

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?hen the 2 is in 21M=&852 state- the 2 and the networ# may be unsynchroni!ed- i.e. the 2 and the networ# mayhave different sets of established 2P" bearers. ?hen the 2 and the MM2 enter the 21M=1O''21T28 state- the set

of 2P" 0earers is synchroni!ed between the 2 and networ#.

4..3.2 E+M-+8**E+TE

The 2 location is #nown in the MM2 with an accuracy of a servin e'ode0 &8. The mobility of 2 is handled by thehandover procedure.

The 2 performs the trac#in area update procedure when the T& in the 2MM system information is not in the list of

T$s that the 2 reistered with the networ#- or when the 2 handovers to an 2=T/' cell and the 2$s T&'indicates LP=TM"&L.

7or a 2 in the 21M=1O''21T28 state- there eists a sinallin connection between the 2 and the MM2. Thesinallin connection is made up of two partsH an //1 connection and an ",MM2 connection.

The 2 shall enter the 21M=&852 state when its sinallin connection to the MM2 has been released or bro#en. This

release or failure is eplicitly indicated by the e'ode0 to the 2 or detected by the 2.

The ", release procedure chanes the state at both 2 and MM2 from 21M=1O''21T28 to 21M=&852.

'OT2 ,H The 2 may not receive the indication for the ", release- e.. due to radio lin# error or out of coverae.

&n this case- there can be temporal mismatch between the 21M=state in the 2 and the 21M=state in theMM2.

fter a sinallin procedure- the MM2 may decide to release the sinallin connection to the 2- after which the stateat both the 2 and the MM2 is chaned to 21M=&852.

'OT2 *H There are some abnormal cases where the 2 transitions to 21M=&852.

?hen a 2 chanes to 21M=1O''21T28 state and if a radio bearer cannot be established- or the 2 cannot

maintain a bearer in the 21M=1O''21T28 state durin handovers- the correspondin 2P" bearer is deactivated.

4..4 State tra'siti"' a'# u'cti"'s

EMM-EREG:STERE EMM-REG:STERE

&ttach acce%t

etach, &ttach ReIect, T&U re ect, E-UTR&* i'terace sitche# " #ue t" *"'-3GPP ha'#"5er,

&$$ earers #eacti5ate#

0i1ure ','$%2 88 state model in !

EMM-EREG:STERE EMM-REG:STERE

&ttach acce%tT&U acce%t "r a UE se$ecti'gE-UTR&* r"6 GER&*UTR&*

etach, &ttach ReIect, T&U re ect,

&$$ earers #eacti5ate#

0i1ure ','$&2 88 state model in 88

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E+M-:LE E+M-+8**E+TE

RR+ c"''ecti"'esta$ishe#

RR+ c"''ecti"'re$ease#

0i1ure ','$32 98 state model in !

E+M-:LEE+M-+8**E+TE

S1 c"''ecti"'esta$ishe#

S1 c"''ecti"'re$ease#

0i1ure ','$2 98 state model in 88

4. 85era$$ "S c"'ce%t

4..1 P* c"''ecti5it; ser5ice

The 2volved Pac#et "ystem provides &P connectivity between a 2 and a P5M' eternal pac#et data networ#. This is

referred to as P8' 1onnectivity "ervice.

The P8' 1onnectivity "ervice supports the transport of traffic flow areate(s)- consistin of one or more "ervice

8ata 7lows ("87s).

'OT2H The concept of "87 is defined in the contet of P11- T" *3.*+3 J:K- and is not eplicitly visible in the

'" sinallin.

4..2 The EPS earer

4..2.1 The EPS earer i' ge'era$7or 2=T/' access to the 2P1 the P8' connectivity service is provided by an 2P" bearer for GTP=based "9A">- and

by an 2P" bearer concatenated with &P connectivity between "ervin G? and P8' G? for PM&P=based "9A">.

n 2P" bearer uniDuely identifies traffic flows that receive a common Eo" treatment between a 2 and a P8' G? for

GTP=based "9A">- and between 2 and "ervin G? for PM&P=based "9A">. The pac#et filters sinalled in the '" procedures are associated with a uniDue pac#et filter identifier on per=P8' connection basis.

'OT2 ,H The 2P" 0earer &dentity toether with the pac#et filter identifier is used to reference which pac#et filterthe 2 intends to modify or delete- i.e. it is used to implement the uniDue pac#et filter identifier.

n 2P" bearer is the level of ranularity for bearer level Eo" control in the 2P1A2=T/'. That is- all traffic mappedto the same 2P" bearer receive the same bearer level pac#et forwardin treatment (e.. schedulin policy- Dueue

manaement policy- rate shapin policy- /51 confiuration- etc.). Providin different bearer level pac#et forwardintreatment reDuires separate 2P" bearers.

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'OT2 *H &n addition but independent to bearer level Eo" control- the P11 framewor# allows an optionalenforcement of service level Eo" control on the ranularity of "87s independent of the mappin of "87s

to 2P" bearers.

One 2P" bearer is established when the 2 connects to a P8'- and that remains established throuhout the lifetime of

the P8' connection to provide the 2 with always=on &P connectivity to that P8'. That bearer is referred to as the

default bearer. ny additional 2P" bearer that is established for the same P8' connection is referred to as a dedicated bearer.

The 2P" bearer traffic flow template (T7T) is the set of all pac#et filters associated with that 2P" bearer. n p5in#

Traffic 7low Template (5 T7T) is the set of uplin# pac#et filters in a T7T. 8own5in# Traffic 7low Template (85T7T) is the set of downlin# pac#et filters in a T7T. 2very dedicated 2P" bearer is associated with a T7T. T7T may

be also assined to the default 2P" bearer. The 2 uses the 5 T7T for mappin traffic to an 2P" bearer in the uplin#direction. The P127 (for GTP=based "9A">) or the 002/7 (for PM&P=based "9A">) uses the 85 T7T for mappin

traffic to an 2P" bearer in the downlin# direction. The 2 may use the 5 T7T and 85 T7T to associate 2P" 0earerctivation or Modification procedures to an application and to traffic flow areates of the application. Therefore the

P8' G? shall- in the 1reate 8edicated 0earer /eDuest and the pdate 0earer /eDuest messaes- provide all availabletraffic flow description information (e.. source and destination &P address and port numbers and the protocol

information).

7or the 2- the evaluation precedence order of the pac#et filters ma#in up the 5 T7Ts is sinalled from the P=G? tothe 2 as part of any appropriate T7T operations.

'OT2 3H The evaluation precedence inde of the pac#et filters associated with the default bearer- in relation to

those associated with the dedicated bearers- is up to operator confiuration. &t is possible to LforceLcertain traffic onto the default bearer by settin the evaluation precedence inde of the correspondin

filters to a value that is lower than the values used for filters associated with the dedicated bearers.

T7T of an uplin# unidirectional 2P" bearer is only associated with 5 pac#et filter(s) that matches the uplin#

unidirectional traffic flow(s) T7T of a downlin# unidirectional 2P" bearer is associated with 85 pac#et filter(s) thatmatches the unidirectional traffic flow(s) and a 5 pac#et filter that effectively disallows any useful pac#et flows (see

clause ,9.3.3.; in T" *3.+:+ J<K for an eample of such pac#et filter.

The 2 routes uplin# pac#ets to the different 2P" bearers based on uplin# pac#et filters in the T7Ts assined to these2P" bearers. The 2 evaluates for a match- first the uplin# pac#et filter amonst all T7Ts that has the lowest evaluation

precedence inde and- if no match is found- proceeds with the evaluation of uplin# pac#et filters in increasin order oftheir evaluation precedence inde. This procedure shall be eecuted until a match is found or all uplin# pac#et filters

have been evaluated. &f a match is found- the uplin# data pac#et is transmitted on the 2P" bearer that is associated with

the T7T of the matchin uplin# pac#et filter. &f no match is found- the uplin# data pac#et shall be sent via the 2P" bearer that has not been assined any uplin# pac#et filter. &f all 2P" bearers (includin the default 2P" bearer for that

P8') have been assined one or more uplin# pac#et filters- the 2 shall discard the uplin# data pac#et.

'OT2 ;H The above alorithm implies that there is at most one 2P" bearer without any uplin# pac#et filter.

Therefore- some 2s may epect that durin the lifetime of a P8' connection (where only networ# has provided T7T pac#et filters) at most one 2P" bearer eists without any uplin# pac#et filter.

To ensure that at most one 2P" bearer eists without any uplin# pac#et filter- the P127 (for GTP=based "9A">) or the002/7 (for PM&P=based "9A">) maintains a valid state for the T7T settins of the P8' connection as defined in

clause ,9.3.+ of T" *3.+:+ J<K.

The initial bearer level Eo" parameter values of the default bearer are assined by the networ#- based on subscription

data (in 2=T/' the MM2 sets those initial values based on subscription data retrieved from @"").

&n a non=roamin scenario- the P127 may chane the Eo" parameter value received from the MM2 based on

interaction with the P1/7 or based on local confiuration. ?hen the P127 chanes those values- the MM2 shall usethe bearer level Eo" parameter values received on the ",, reference point durin establishment or modification of the

default bearer.

&n a roamin scenario- based on local confiuration- the MM2 may downrade the /P or P'=M0/ andAor remap

E1& parameter values received from @"" to the value locally confiured in MM2 (e.. when the values received from

@"" do not comply with services provided by the visited P5M'). The P127 may chane the Eo" parameter valuesreceived from the MM2 based on interaction with the P1/7 or based on local confiuration. lternatively- the P127

may reject the bearer establishment.

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'OT2 9H 7or certain P's (e.. the &M" P' defined by the G"M) the E1& value is strictly defined andtherefore remappin of E1& is not permitted.

'OT2 :H &n roamin scenarios- the /PAP'=M0/AE1& values provided by the MM2 for a default bearer maydeviate from the subscribed values dependin on the roamin areement. &f the P11AP127 rejects the

establishment of the default bearer- this implies that ttach via 2=T/' will fail. "imilarly- if the

P127 (based on interaction with the P1/7 or based on local confiuration) uprades the /PAP'=M0/AE1& parameter values received from the MM2- the default bearer establishment and attach may be rejected by the MM2.

'OT2 <H "ubscription data related to bearer level Eo" parameter values retrieved from the @"" are not applicablefor dedicated bearers.

7or of 2=T/'- the decision to establish or modify a dedicated bearer can only be ta#en by the 2P1- and the bearerlevel Eo" parameter values are always assined by the 2P1.

The MM2 shall not modify the bearer level Eo" parameter values received on the ",, reference point durinestablishment or modification of a default or dedicated bearer (ecept when the conditions described in 'OT2 > apply).

1onseDuently- LEo" neotiationL between the 2=T/' and the 2P1 durin default or dedicated bearerestablishment A modification is not supported. The MM2 may reject the establishment or modification of a default or

dedicated bearer if the bearer level Eo" parameter values sent by the P127 over a GTP based "> roamin interface donot comply with a roamin areement.

'OT2 >H The MM2- based on local policies- can downrade the /P pre=emption capability- P'=M0/ orM0/ (for G0/ bearers) parameters received over "> and allow the bearer establishment or modification

of a default or dedicated bearer. The @P5M' is epected to set 2P" Eo" parameters compliant withroamin areements- therefore the @P5M' is not informed about any downrade of 2P" bearer Eo"

parameters. The conseDuences of such a downrade are that P'=M0/ and M0/ enforcement at the@P5M' and at the 2 will not be alined.

The distinction between default and dedicated bearers should be transparent to the access networ# (e.. 2=T/').

n 2P" bearer is referred to as a G0/ bearer if dedicated networ# resources related to a Guaranteed 0it /ate (G0/)value that is associated with the 2P" bearer are permanently allocated (e.. by an admission control function in the

e'ode0) at bearer establishmentAmodification. Otherwise- an 2P" bearer is referred to as a 'on=G0/ bearer.

'OT2 CH dmission control can be performed at establishment A modification of a 'on=G0/ bearer even thouh a 'on=G0/ bearer is not associated with a G0/ value.

dedicated bearer can either be a G0/ or a 'on=G0/ bearer. default bearer shall be a 'on=G0/ bearer.

'OT2 ,+H default bearer provides the 2 with &P connectivity throuhout the lifetime of the P8' connection.That motivates the restriction of a default bearer to bearer type 'on=G0/.

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4..2.2 The EPS earer ith GTP-ase# S!S<

Ser5i'g GA P* GA e*C

Ra#i" Cearer S!S< Cearer

&%%$icati"' Ser5ice La;er

UL-TT→ RC-:

L Traic $" &ggregates

L-TT

L-TT S!S<-TE:

RC-: ↔ S1-TE:

S1 Cearer

S1-TE: S!S<-TE:

UE

UL Traic $" &ggregates

UL-TT

Ser5i'g GA P* GA e*"#eC

→

UE

↔

0i1ure '-'&'&$%2 T#o !nicast PS 4earers (GTP$4ased S+S.)

n 2P" bearer is reali!ed by the followin elementsH

= &n the 2- the 5 T7T maps a traffic flow areate to an 2P" bearer in the uplin# directionI

= &n the P8' G?- the 85 T7T maps a traffic flow areate to an 2P" bearer in the downlin# directionI

= radio bearer (defined in T" 3:.3++ J9K) transports the pac#ets of an 2P" bearer between a 2 and an e'ode0.&f a radio bearer eists- there is a one=to=one mappin between an 2P" bearer and this radio bearerI

= n ", bearer transports the pac#ets of an 2P" bearer between an e'ode0 and a "ervin G?I= n 2=/0 (2=T/' /adio ccess 0earer) refers to the concatenation of an ", bearer and the correspondin

radio bearer- as defined in T" 3:.3++ J9K.

= n "9A"> bearer transports the pac#ets of an 2P" bearer between a "ervin G? and a P8' G?I

= 2 stores a mappin between an uplin# pac#et filter and a radio bearer to create the mappin between a trafficflow areate and a radio bearer in the uplin#I

= P8' G? stores a mappin between a downlin# pac#et filter and an "9A"> bearer to create the mappin between a traffic flow areate and an "9A"> bearer in the downlin#I

= n e'ode0 stores a one=to=one mappin between a radio bearer and an ", 0earer to create the mappin between

a radio bearer and an ", bearer in both the uplin# and downlin#I

= "ervin G? stores a one=to=one mappin between an ", 0earer and an "9A"> bearer to create the mappin between an ", bearer and an "9A"> bearer in both the uplin# and downlin#.

The P8' G? routes downlin# pac#ets to the different 2P" bearers based on the downlin# pac#et filters in the T7Tsassined to the 2P" bearers in the P8' connection. pon reception of a downlin# data pac#et- the P8' G? evaluates

for a match- first the downlin# pac#et filter that has the lowest evaluation precedence inde and- if no match is found- proceeds with the evaluation of downlin# pac#et filters in increasin order of their evaluation precedence inde. This

procedure shall be eecuted until a match is found- in which case the downlin# data pac#et is tunnelled to the "ervinG? on the 2P" bearer that is associated with the T7T of the matchin downlin# pac#et filter. &f no match is found- the

downlin# data pac#et shall be sent via the 2P" bearer that does not have any T7T assined. &f all 2P" bearers

(includin the default 2P" bearer for that P8') have been assined a T7T- the P8' G? shall discard the downlin#data pac#et.

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4..2.3 The EPS earer ith PM:P-ase# S!S<

"ee clause ;.,+.3 in T" *3.;+* J*K.

4..3 Cearer $e5e$ "S %ara6eters

The 2P" bearer Eo" profile includes the parameters E1&- /P- G0/ and M0/- described in this clause. This clausealso describes Eo" parameters which are applied to an areated set of 2P" 0earersH P'=M0/ and 2=M0/.

2ach 2P" bearer (G0/ and 'on=G0/) is associated with the followin bearer level Eo" parametersH

= Eo" 1lass &dentifier (E1&)I

= llocation and /etention Priority (/P).

E1& is a scalar that is used as a reference to access node=specific parameters that control bearer level pac#etforwardin treatment (e.. schedulin weihts- admission thresholds- Dueue manaement thresholds- lin# layer protocol

confiuration- etc.)- and that have been pre=confiured by the operator ownin the access node (e.. e'ode0). one=to=one mappin of standardi!ed E1& values to standardi!ed characteristics is captured T" *3.*+3 J:K.

'OT2 ,H On the radio interface and on ",- each P8 (e.. /51 P8 or GTP= P8) is indirectly associated withone E1& via the bearer identifier carried in the P8 header. The same applies to the "9 and "> interfaces

if they are based on GTP.

The /P shall contain information about the priority level (scalar)- the pre=emption capability (fla) and the pre=emption vulnerability (fla). The primary purpose of /P is to decide whether a bearer establishment A modification

reDuest can be accepted or needs to be rejected due to resource limitations (typically available radio capacity for G0/

bearers). The priority level information of the /P is used for this decision to ensure that the reDuest of the bearer withthe hiher priority level is preferred. &n addition- the /P can be used (e.. by the e'ode0) to decide which bearer(s) to

drop durin eceptional resource limitations (e.. at handover). The pre=emption capability information of the /Pdefines whether a bearer with a lower /P priority level should be dropped to free up the reDuired resources. The pre=

emption vulnerability information of the /P defines whether a bearer is applicable for such droppin by a pre=emptioncapable bearer with a hiher /P priority value. Once successfully established- a bearer$s /P shall not have any

impact on the bearer level pac#et forwardin treatment (e.. schedulin and rate control). "uch pac#et forwardintreatment should be solely determined by the other 2P" bearer Eo" parametersH E1&- G0/ and M0/- and by the

M0/ parameters. The /P is not included within the 2P" Eo" Profile sent to the 2.

'OT2 *H The /P should be understood as LPriority of llocation and /etentionLI not as Lllocation- /etention-

and PriorityL.

'OT2 3H Bideo telephony is one use case where it may be beneficial to use 2P" bearers with different /P values

for the same 2. &n this use case an operator could map voice to one bearer with a hiher /P- and videoto another bearer with a lower /P. &n a conestion situation (e.. cell ede) the e'ode0 can then drop

the Lvideo bearerL without affectin the Lvoice bearerL. This would improve service continuity.

'OT2 ;H The /P may also be used to free up capacity in eceptional situations- e.. a disaster situation. &n such a

case the e'ode0 may drop bearers with a lower /P priority level to free up capacity if the pre=emptionvulnerability information allows this.

2ach G0/ bearer is additionally associated with the followin bearer level Eo" parametersH

= Guaranteed 0it /ate (G0/)I

= Maimum 0it /ate (M0/).

The G0/ denotes the bit rate that can be epected to be provided by a G0/ bearer. The M0/ limits the bit rate that can

be epected to be provided by a G0/ bearer (e.. ecess traffic may et discarded by a rate shapin function). "eeclause ;.<.; for further details on G0/ and M0/.

2ach P' access- by a 2- is associated with the followin Eo" parameterH

= per P' reate Maimum 0it /ate (P'=M0/).

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The P'=M0/ is a subscription parameter stored per P' in the @"". &t limits the areate bit rate that can beepected to be provided across all 'on=G0/ bearers and across all P8' connections of the same P' (e.. ecess

traffic may et discarded by a rate shapin function). 2ach of those 'on=G0/ bearers could potentially utili!e the entireP'=M0/- e.. when the other 'on=G0/ bearers do not carry any traffic. G0/ bearers are outside the scope of

P'=M0/. The P=G? enforces the P'=M0/ in downlin#. 2nforcement of P'=M0/ in uplin# is done in the2 and additionally in the P=G?.

'OT2 9H ll simultaneous active P8' connections of a 2 that are associated with the same P' shall be provided by the same P8' G? (see clauses ;.3.>., and 9.,+.,).

P'=M0/ applies to all P8' connections of an P'. 7or the case of multiple P8' connections of an P'- if achane of P'=M0/ occurs due to local policy or the PG? is provided the updated P'=M0/ for each P8'

connection from the MM2 or P1/7- the PG? initiates eplicit sinalin for each P8' connection to update the P'=M0/ value.

2ach 2 in state 2MM=/2G&"T2/28 is associated with the followin bearer areate level Eo" parameterH

= per 2 reate Maimum 0it /ate (2=M0/).

The 2=M0/ is limited by a subscription parameter stored in the @"". The MM2 shall set the 2=M0/ to the sum

of the P'=M0/ of all active P's up to the value of the subscribed 2=M0/. The 2=M0/ limits theareate bit rate that can be epected to be provided across all 'on=G0/ bearers of a 2 (e.. ecess traffic may etdiscarded by a rate shapin function). 2ach of those 'on=G0/ bearers could potentially utili!e the entire 2=M0/-

e.. when the other 'on=G0/ bearers do not carry any traffic. G0/ bearers are outside the scope of 2 M0/. The2=T/' enforces the 2=M0/ in uplin# and downlin#.

The G0/ and M0/ denote bit rates of traffic per bearer while 2=M0/AP'=M0/ denote bit rates of traffic perroup of bearers. 2ach of those Eo" parameters has an uplin# and a downlin# component. On ",MM2 the values of

the G0/- M0/- and M0/ refer to the bit stream ecludin the GTP=A&P header overhead of the tunnel on ",.

The @"" defines- for each P8' subscription contet- the $2P" subscribed Eo" profile$ which contains the bearer level

Eo" parameter values for the default bearer (E1& and /P) and the subscribed P'=M0/ value. The subscribed

/P shall be used to set the priority level of the 2P" bearer parameter /P for the default bearer while the pre=emptioncapability and the pre=emption vulnerability information for the default bearer are set based on MM2 operator policy. &n

addition- the subscribed /P shall be applied by the P=G? for settin the /P priority level of all dedicated 2P"

bearers of the same P8' connection unless a specific /P priority level settin is reDuired (due to P=G? confiurationor interaction with the P1/7).

'OT2 :H The /P parameter of the 2P" bearer can be modified by the P=G? (e.. based on interaction with theP1/7) to assin the appropriate pre=emption capability and the pre=emption vulnerability settin.

The /P pre=emption vulnerability of the default bearer should be set appropriately to minimi!e the ris# of unnecessaryrelease of the default bearer.

4..4 Su%%"rt "r &%%$icati"' Ser5ice La;er Rate &#a%tati"'

The 2=T/'AT/' and the 2 support the /71 3,:> J99K 2plicit 1onestion 'otification (21')- as describedin T" 3:.3++ J9K- T" *9.;+, J,:K and T" *:.,,; J9:K. The &P level 21' scheme enables the 2=T/'AT/' to

trier a rate adaptation scheme at the application A service A transport layer. To ma#e sufficient time available for end=

to=end codec rate adaptation the 2=T/'AT/' should attempt to not drop any pac#ets on a bearer for a defaultrace period of at least 9++ ms after it has indicated conestion with 21' on the bearer for pac#ets within the pac#et

delay budet. 8urin this 21' race period the 2=T/'AT/' should also attempt to meet the E1& characteristics

A Eo" class associated with the bearer.

'OT2 ,H 'ote that the receivin end=point should interpret all 21'=12 sinals received within one end=to=end

round=trip time as one Lconestion eventL (see &2T7 /71 3,:> J99K and T" *:.,,; J9:K).

The M0/ of a particular G0/ bearer may be set larer than the G0/.

'OT2 *H 2nforcement of P'=M0/ A 2=M0/ is independent of whether the M0/ of a particular G0/

bearer has been set larer than the G0/ (see clause ;.<.3).

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The 2P1 does not support 2=T/'AT/'=initiated LEo" re=neotiationL. That is- the 2P1 does not support ane'ode0A/'1 initiated bearer modification procedure. &f an e'ode0A/'1 can no loner sustain the G0/ of an active

G0/ bearer then the e'ode0A/'1 should simply trier a deactivation of that bearer.

4..! &%%$icati"' " P++ i' the E5"$5e# PacBet S;ste6

The 2volved Pac#et "ystem applies the P11 framewor# as defined in T" *3.*+3 J:K for Eo" policy and charincontrol. P11 functionality is present in the 7- P127 and P1/7.

n 2P" needs to support both P127 and P1/7 functionality to enable dynamic policy and charin control by means

of installation of P11 rules based on user and service dimensions. @owever- an 2P" may only support P127functionality in which case it shall support static policy and charin control.

'OT2H The local confiuration of P127 static policy and charin control functionality is not subject tostandardi!ation. The P127 static policy and control functionality is not based on subscription

information.

The followin applies to the use of dynamic policy and charin control in 2P"H

= The service level (per "87) Eo" parameters are conveyed in P11 rules (one P11 rule per "87) over the Greference point. The service level Eo" parameters consist of a Eo" 1lass &dentifier (E1&) llocation and

/etention Priority (/P) and authorised Guaranteed and Maimum 0it /ate values for uplin# and downlin#.The E1& is a scalar that represents the Eo" characteristics that the 2P" is epected to provide for the "87. /P

is an indicator of the priority for the "87 that is used to decide about the assinment of resources due to resourcelimitations. The service level /P assined by P1/7 in a P11 rule may be different from the bearer level /P

stored in subscription dataI

= The set of standardi!ed E1&s and their characteristics that the P1/7 in an 2P" can select from is provided in

T" *3.*+3 J:K. &t is epected that the P1/7 selects a E1& in such a way that the &P=1' receivin it can supportitI

= &t is not reDuired that an &P=1' supports all standardi!ed E1&sI

= &n the case of &P address confiuration subseDuent to initial attachment- i.e. throuh 8@1P mechanism tocomplete the &P address confiuration- the P8' G?AP127 shall notify the P1/7 of the 2$s &P address by

means of an &P=1' "ession Modification procedure or &P=1' "ession 2stablishment procedure as defined inT" *3.*+3 J:K when it is assined. &f the P1/7 response leads to an 2P" bearer modification the P8' G?

should initiate a bearer update procedureI

= 7or local brea#out- the visited networ# has the capability to reject the Eo" authori!ed by the home networ# based on operator policies.

The followin applies reardless of whether dynamic or static policy and charin control is used in 2P"H

= 7or 2=T/' the value of the /P of an 2P" bearer is identical to the value of the /P of the "87(s) mapped

to that 2P" bearerI

= 7or the same 2AP8' connectionH "87s associated with different E1&s or with the same service=level E1& butdifferent /P shall not be mapped to the same 2P" bearerI

= The bearer level E1& of an 2P" bearer is identical to the value of the E1& of the "87(s) mapped to that 2P"

bearer.

4.. Cearer +"'tr"$ M"#e i' EP+

The 0earer 1ontrol Mode (01M) for 2=T/' access is always 2A'?. @ence- eplicit sinallin between the 2

and the networ# to determine 01M for 2=T/' access does not occur.

G2/'AT/'A2=T/' capable 2s neotiate the 01M of a P8' 1onnection applicable for G2/'AT/'

access durin 2=T/' &nitial ttach and durin 2 /eDuested P8' 1onnectivity procedure. "uch 2s provide the

'etwor# /eDuest "upport 2 ('/") parameter to the P8' G? in P1O. The P8' G? derives the 01M applicableto G2/'AT/' access based on the '/" and operator policy. The selected 01M- valid for G2/'AT/'- is

provided bac# to the 2 in P1O &2 in the 2=T/' ttach ccept or P8' 1onnectivity ccept messae. The

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selected 01M is also stored in the P8' G? and the 2- and applied by 2 upon movin to G2/' or T/'access unless eplicitly informed by P8' G? of a chane in 01M (see T" *3.+:+ J<K) via P1O &2.

'OT2 ,H &n /el=> it was not mandatory for G2/'AT/'A2=T/' capable 2s to provide '/" to theP8' G? durin 2=T/' &nitial ttach and 2 /eDuested P8' 1onnectivity procedure.

?hen a G2/'AT/'A2=T/' capable 2 moves from T/' or G2/' access to 2=T/' access- it

stores the 01M used in T/' or G2/' access to be used aain when the 2 moves bac# to T/' or G2/'access unless eplicitly informed by P8' G? of a chane in 01M (see T" *3.+:+ J<K) via the P1O &2.

&f P11 is deployed- the P8' G? reDuests P1/7 to perform 01M selection for the /T the 2 is accessin at

&P=1' session establishment and &P=1' session modification. The P1/7- determines the applicable 01M- based ona number of factors (see T" *3.*+3 J:K)- and informs the P8' G?. &f the 01M has chaned- the P8' G? informs the

2 of the new 01M via the P1O &2.

4.< +"6%atii$it; :ssues

4.<.1 *et"rB +"'igurati"' "r :'teracti"' ith UTR&*GER&*

GP/" idle mode mobility within G2/' or T/' and also between G2/' and T/' specifies a set ofseDuence number handlin functions- e.. the echane of seDuence numbers durin /outin rea pdate procedures.

2P" idle mode mobility procedures don$t specify any such seDuence number mappins for &/T mobility scenarios. Toavoid interoperation issues a networ# that deploys 2=T/' toether with G2/' andAor T/' shall not confiure

usae of the GP/" feature Lreorderin reDuiredL for P8P contets of P8P type &Pv;- &Pv: or &Pv;v:. lso the networ#shall not confiure usae of lossless P81P of T/' and the G2/' "G"' shall not confiure usae of

ac#nowleded mode 551A'"P&A"'81P.

! u'cti"'a$ #escri%ti"' a'# i'"r6ati"' $"s

!.1 +"'tr"$ a'# user %$a'es

!.1.0 Ge'era$

'OT2H

= /efer to T" *3.;+* J*K for the correspondin protocol stac# for PM&P based "9A">.

= /efer to T" *3.*+3 J:K for the correspondin protocol stac# for Policy 1ontrol and 1harin (P11)

function related reference points.

!.1.1 +"'tr"$ P$a'e

!.1.1.1 Ge'era$

The control plane consists of protocols for control and support of the user plane functionsH

= controllin the 2=T/ networ# access connections- such as attachin to and detachin from 2=T/'I

= controllin the attributes of an established networ# access connection- such as activation of an &P addressI

= controllin the routin path of an established networ# connection in order to support user mobilityI and

= controllin the assinment of networ# resources to meet chanin user demands.

The followin control planes are used in 2=T/' mode.

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!.1.1.2 e*"#eC - MME

S+TP

L2

L1

:P

L2

L1

:P

S+TP

S1-MME e*"#eC MME

S1-&P S1-&P

@e1end2- S% Application Protocol (S%$AP)2 &%%$icati"' La;er Pr"t"c"$ etee' the e*"#eC a'# the MME.- Stream 9ontrol Transmission Protocol (S9TP)2 This %r"t"c"$ guara'tees #e$i5er; " sig'a$$i'g

6essages etee' MME a'# e*"#eC (S1). S+TP is #ei'e# i' R+ 40 J3!K.

0i1ure +'%'%'&$%2 9ontrol Plane for S%$88 7nterface

'OT2H /efer to T" 3:.3++ J9K for the correspondin control plane for the @e'0 "ubsystem = MM2.

!.1.1.3 UE - MME

S+TP

L2

L1

:P

L2

L1

:P

S+TP

S1-MME e*"#eC MME

S1-&P S1-&P

*&S

M&+

L1

RL+

P+P

UE

RR+

M&+

L1

RL+

P+P

RR+

LTE-Uu

*&SRe$a;

Lege'#- "AS2 The *&S %r"t"c"$ su%%"rts 6"i$it; 6a'age6e't u'cti"'a$it; a'# user %$a'e earer acti5ati"',

6"#iicati"' a'# #eacti5ati"'. :t is a$s" res%"'si$e " ci%heri'g a'# i'tegrit; %r"tecti"' " *&S sig'a$$i'g.

- @T$!u2 The ra#i" %r"t"c"$ " E-UTR&* etee' the UE a'# the e*"#eC is s%eciie# i' TS 3.300 J!K.

0i1ure +'%'%'3$%2 9ontrol Plane ! $ 88

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!.1.1.4 SGS* - MME

UP

L2

L1

:P

L2

L1

:P

UP

S3 SGS* MME

GTP-+ GTP-+

@e1end2- GPRS Tunnellin1 Protocol for the control plane (GTP$9)2 This %r"t"c"$ tu''e$s sig'a$$i'g 6essages

etee' SGS* a'# MME (S3).- !ser =ata1ram Protocol (!=P)2 This %r"t"c"$ tra'sers sig'a$$i'g 6essages. UP is #ei'e# i'R+ < J2K.

0i1ure +'%'%'$%2 9ontrol Plane for S3 7nterface

!.1.1.! SGS* - S-GA

UP

L2

L1

:P

L2

L1

:P

UP

S4 SGS* S-GA

GTP-+ GTP-+


etee' SGS* a'# S-GA (S4).

- !ser =ata1ram Protocol (!=P)2 This %r"t"c"$ tra'sers sig'a$$i'g 6essages. UP is #ei'e# i'R+ < J2K.

0i1ure +'%'%'+$%2 9ontrol Plane for S interface

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!.1.1. S-GA - P-GA

UP

L2

L1

:P

L2

L1

:P

UP

S! "r S< S - GA P - GA

GTP - + GTP - +


etee' S-GA a'# P-GA (S! "r S<).- !ser =ata1ram Protocol (!=P)2 This %r"t"c"$ tra'sers sig'a$$i'g 6essages etee' S-GA a'# P-GA.

UP is #ei'e# i' R+ < J2K.

0i1ure +'%'%',$%2 9ontrol Plane for S+ and S. interfaces

!.1.1. MME - MME

UP

L2

L1

:P

L2

L1

:P

UP

S10 MME MME

GTP-+ GTP-+


etee' MMEs (S10).- !ser =ata1ram Protocol (!=P)2 This %r"t"c"$ tra'sers sig'a$$i'g 6essages etee' MMEs. UP is

#ei'e# i' R+ < J2K.

0i1ure +'%'%'-$%2 9ontrol Plane for S% interface

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!.1.1.10 MME - E:R

S+TP

L2

L1

:P

L2

L1

:P

S13 MME E:R

8iameter 8iameter

S+TP

@e1end2- =iameter2 This %r"t"c"$ su%%"rts UE i#e'tit; checB %r"ce#ure etee' MME a'# E:R (S13). ia6eter is

#ei'e# i' R+ 3!<< J31K.- Stream 9ontrol Transmission Protocol (S9TP)2 This %r"t"c"$ tra'sers sig'a$$i'g 6essages. S+TP is#ei'e# i' R+ 40 J3!K.

0i1ure +'%'%'%$%2 9ontrol Plane for S%3 interface

!.1.1.11 V"i#

!.1.1.12 MME - +SS

S+TP

L2

L1

:P

L2

L1

:P

S+TP

Sa MME +SS

ia6eter ia6eter

@e1end2=iameter2 This %r"t"c"$ su%%"rts tra'serri'g " +SG suscri%ti"' #ata "r r"a6i'g suscriers "'$;etee' MME a'# +SS (Sa). ia6eter is #ei'e# i' R+ 3!<< J31K.Stream 9ontrol Transmission Protocol (S9TP)2 This %r"t"c"$ tra'sers sig'a$$i'g 6essages. S+TP is#ei'e# i' R+ 40 J3!K.

0i1ure +'%'%'%&$%2 9ontrol Plane for S-a interface

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!.1.2 User P$a'e

!.1.2.1 UE - P-GA user %$a'e ith E-UTR&*

Ser5i'g GA P* GA

S!S<

GTP-UGTP-U

UP:P UP:P

L2

Re$a;

L2

L1 L1

P+P

RL+

M&+

L1

:P

&%%$icati"'

UP:P

L2

L1

GTP-U

:P

SGiS1-ULTE-Uu

e*"#eC

RL+ UP:P

L2

P+P GTP-U

Re$a;

M&+

L1 L1

UE

@e1end2- GPRS Tunnellin1 Protocol for the user plane (GTP$!)2 This %r"t"c"$ tu''e$s user #ata etee'

e*"#eC a'# the S-GA as e$$ as etee' the S-GA a'# the P-GA i' the acB"'e 'et"rB. GTP sha$$e'ca%su$ate a$$ e'# user :P %acBets.

- 88 c"'tr"$s the user %$a'e tu''e$ esta$ish6e't a'# esta$ishes User P$a'e Cearers etee' e*"#eCa'# S-GA.

- !=P7P2 These are the acB"'e 'et"rB %r"t"c"$s use# "r r"uti'g user #ata a'# c"'tr"$ sig'a$$i'g.- @T$!u2 The ra#i" %r"t"c"$s " E-UTR&* etee' the UE a'# the e*"#eC are s%eciie# i' TS 3.300 J!K.

0i1ure +'%'&'%$%2 !ser Plane

!.1.2.2 e*"#eC - S-GA

UP

L2 L1

:P

L2 L1

:P

UP

S1-U e*"#eC S-GA

GTP-U GTP-U


e*"#eC a'# S-GA.- !ser =ata1ram Protocol (!=P)2 This %r"t"c"$ tra'sers user #ata. UP is #ei'e# i' R+ < J2K.

0i1ure +'%'&'&$%2 !ser Plane for e"ode> C S$GB

'OT2H /efer to T" 3:.3++ J9K for the correspondin user plane for the @e'0 "ubsystem = "=G?.

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!.1.2.3 UE - P* GA user %$a'e ith 2G access 5ia the S4 i'terace

Ser5i'g G A P* GA

S!S<

M&+

GSM

R

* et"r B S er5ice

L1is

RL+ CSSGP

Re$a;

LL+

CSSGP :P

L2

S*+P GTP - U

Re$a;

*et"rB Ser5ice

L1is L1

UP

GTP - U GTP - U

UP

:P :P

L2

Re$a;

L2

L1 L1

LL+

RL+

M&+

GSM R

S*+P

:P

&%%$icati"'

:P

L2

L1

UP

:P

SGi S4 G U6

SGS* CS UE

UP

GTP - U

@e1end2- GPRS Tunnellin1 Protocol for the user plane (GTP$!)2 This %r"t"c"$ tu''e$s user #ata etee' SGS*

a'# the S-GA as e$$ as etee' the S-GA a'# the P-GA i' the acB"'e 'et"rB. GTP sha$$e'ca%su$ate a$$ e'# user :P %acBets.

- !=P7P2 These are the acB"'e 'et"rB %r"t"c"$s use# "r r"uti'g user #ata a'# c"'tr"$ sig'a$$i'g.- Pr"t"c"$s "' the U6 a'# the G i'teraces are #escrie# i' TS 23.00 JK.

0i1ure +'%'&'3$%2 !ser Plane for AG4 mode

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!.1.2.4 UE - P* GA user %$a'e ith 3G access 5ia the S12 i'terace

Ser5i'g GA P* GA

S!S<

GTP - U GTP - U

UP:P UP:P

L2

Re$a;

L2

L1 L1

P+P

RL+

M&+

L1

:P

&%%$icati"'

UP:P

L2

L1

GTP - U

:P

SGi :u Uu

UTR&*

RL+ UP:P

L2

P+P GTP - U

Re$a;

M&+

L1 L1

UE


UTR&* a'# the S-GA as e$$ as etee' the S-GA a'# the P-GA i' the acB"'e 'et"rB. GTP sha$$e'ca%su$ate a$$ e'# user :P %acBets.

- !=P7P2 These are the acB"'e 'et"rB %r"t"c"$s use# "r r"uti'g user #ata a'# c"'tr"$ sig'a$$i'g.- Pr"t"c"$s "' the Uu i'terace are #escrie# i' TS 23.00 JK.- SGS* c"'tr"$s the user %$a'e tu''e$ esta$ish6e't a'# esta$ish a irect Tu''e$ etee' UTR&* a'#

S-GA as sh"' i' igure !.1.2.4-1.

0i1ure +'%'&'$%2 !ser Plane for !TRA" mode and =irect Tunnel on S%&

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!.1.2.! UE - P* GA user %$a'e ith 3G access 5ia the S4 i'terace

Ser5i' g GA P* GA

S!S<

UP:P UP:P

L2

GTP - U GTP - U

Re$a;

L2

L1 L1

GTP - U GTP - U

UP:P UP :P

L2

Re$a;

L2

L1 L1

P+P

RL+

M&+

L1

:P

&%%$icati"'

UP:P

L2

L1

GTP - U

:P

SGi S4 :u Uu

SGS* UTR&* UE

RL+ UP:P

L2

P+P GTP - U

Re$a;

M&+

L1 L1

*8TE P$ease reer t" TS 23.402 J2K "r the c"rres%"'#i'g stacB "r PM:P ase# S!S<.


UTR&* a'# the SGS*, etee' SGS* a'# S-GA as e$$ as etee' the S-GA a'# the P-GA i' theacB"'e 'et"rB. GTP sha$$ e'ca%su$ate a$$ e'# user :P %acBets.

- !=P7P2 These are the acB"'e 'et"rB %r"t"c"$s use# "r r"uti'g user #ata a'# c"'tr"$ sig'a$$i'g.- Pr"t"c"$s "' the Uu a'# the :u i'teraces are #escrie# i' TS 23.00 JK.- SGS" c"'tr"$s the user %$a'e tu''e$ esta$ish6e't a'# esta$ishes a tu''e$ etee' SGS* a'# S-GA. :

irect Tu''e$ is esta$ishe# etee' UTR&* a'# S-GA, see igure !.1.2.4-1.

0i1ure +'%'&'+$%2 !ser Plane for 7u mode

!.2 :#e'tities

!.2.1 EPS earer i#e'tit;

n 2P" bearer identity uniDuely identifies an 2P" bearer for one 2 accessin via 2=T/'. The 2P" 0earer &dentityis allocated by the MM2. There is a one to one mappin between 2P" /0 and 2P" 0earer- and the mappin between

2P" /0 &dentity and 2P" 0earer &dentity is made by 2=T/'. The 2=/0 &8 value used at ", and F* interfaces toidentify an 2=/0 is the same as the 2P" 0earer &8 value used to identify the associated 2P" 0earer.

?hen there is a mappin between an 2P" bearer and a P8P contet- the same identity value is used for the 2P" bearer&8 and the '"P&A/0 &8.

&n some "M sinallin messaes in G2/'AT/'- transaction identifier (T&) represents '"P&. The T& isdynamically allocated by the 2 for 2=reDuested P8P contet activation- and by the networ# for networ#=reDuested

P8P contet activation. correspondin allocation is also needed for 2P" 0earers in order to successfully transfer0earers to G2/'AT/'. The T& is deallocated when a P8P contetA2P" 0earer has been deactivated. T& usae is

defined in T" *3.+:+ J<K.

!.2.2 G$"a$$; U'iDue Te6%"rar; UE :#e'tit;

The MM2 shall allocate a Globally niDue Temporary &dentity (GT&) to the 2. The GT& is defined in

T" *3.++3 JCK.

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!.2.3 TracBi'g &rea :#e'tit; (T&:)

This is the identity used to identify trac#in areas. The Trac#in rea &dentity is constructed from the M11 (Mobile1ountry 1ode)- M'1 (Mobile 'etwor# 1ode) and T1 (Trac#in rea 1ode).

T& should be associated with a sinle time !one. ll T&s served by one e'ode0 shall be in the same time !one.

'OT2H 1hanes in the T& of a cell can occur but are normally infreDuent and lin#ed with OSM activity.

!.2.4 e*"#eC S1-&P UE :#e'tit; (e*"#eC S1-&P UE :)

This is the temporary identity used to identify a 2 on the ",=MM2 reference point within the e'ode0. &t is uniDuewithin the e'ode0.

!.2.! MME S1-&P UE :#e'tit; (MME S1-&P UE :)

This is the temporary identity used to identify a 2 on the ",=MM2 reference point within the MM2. &t is uniDuewithin the MM2.

!.2. +$"se# Suscrier Gr"u% :

1"G &8 is a uniDue identifier within the scope of P5M' defined in T" *3.++3 JCK which identifies a 1losed"ubscriber Group (1"G) in the P5M' associated with a 1"G cell or roup of 1"G cells.

!.3 &uthe'ticati"', securit; a'# $"cati"' 6a'age6e't

!.3.1 :P a##ress a$$"cati"'

!.3.1.1 Ge'era$ 2 shall perform the address allocation procedures for at least one &P address (either &Pv; address or &Pv: prefi)

after the default bearer activation if no &Pv; address is allocated durin the default bearer activation.

One of the followin ways shall be used to allocate &P addresses for the 2H

a) The @P5M' allocates the &P address to the 2 when the default bearer is activated (dynamic or static @P5M'

address)I

b) The BP5M' allocates the &P address to the 2 when the default bearer is activated (dynamic BP5M' address)Ior

c) The P8' operator or administrator allocates an (dynamic or static) &P address to the 2 when the default bearer

is activated (2ternal P8' ddress llocation).

The &P address allocated for the default bearer shall also be used for the dedicated bearers within the same P8'connection. &P address allocation for P8' connections- which are activated by the 2 reDuested P8' connectivity

procedure- is handled with the same set of mechanisms as those used within the ttach procedure.

P8' types &Pv;- &Pv: and &Pv;v: are supported. n 2P" 0earer of P8' type &Pv;v: may be associated with one &Pv:

prefi only or with both one &Pv; address and one &Pv: prefi. P8' type &Pv; is associated with an &Pv; address. P8'type &Pv: is associated with an &Pv: prefi. P8' types &Pv; and &Pv: are utilised for the 2 andAor the P8' G?

support &Pv; addressin only or &Pv: prefi onlyI or operator preferences dictate the use of a sinle &P version only- orthe subscription is limited to &Pv; only or &Pv: only for this P'. &n addition- P8' type &Pv; and &Pv: are utilised for

interwor#in with nodes of earlier releases.

The way that the 2 sets the reDuested P8' type may be pre=confiured in the device per P'. nless otherwise

confiured (includin when the 2 does not send any P')- the 2 sets the P8' type durin the ttach or P8'1onnectivity procedures based on its &P stac# confiuration as followsH

= 2 which is &Pv: and &Pv; capable shall reDuest for P8' type &Pv;v:.

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= 2 which is only &Pv; capable shall reDuest for P8' type &Pv;.

= 2 which is only &Pv: capable shall reDuest for P8' type &Pv:.

= ?hen the &P version capability of the 2 is un#nown in the 2 (as in the case when the MT and T2 areseparated and the capability of the T2 is not #nown in the MT)- the 2 shall reDuest for P8' type &Pv;v:.

'OT2 ,H t intersystem chanes between G2/'AT/' and 2=T/' there is a ,=to=, mappin betweenP8P type &Pv;v: and P8' type &Pv;v: without re=neotiation of the P8PAP8' type used for a P8'

connection.

The @"" stores one or more P8' types per P' in the subscription data. 8urin the ttach or 2 reDuested P8'

connectivity procedure the MM2 compares the reDuested P8' type to the P8' type in the subscription records for theiven P' and sets the P8' type as followsH

= &f the reDuested P8' type is allowed by subscription- the MM2 sets the P8' type as reDuested.

= &f the reDuested P8' type is &Pv;v: and subscription data only allows P8' type &Pv; or only allows P8' type

&Pv:- the MM2 sets the P8' type accordin to the subscribed value. reason cause shall be returned to the 2indicatin that only the assined P8' type is allowed. &n this case the 2 shall not reDuest another P8'

connection to the same P' for the other &P version.

= &f the reDuested P8' type is &Pv; or &Pv:- and either the reDuested P8' type or P8' type &Pv;v: are

subscribed- the MM2 sets the P8' type as reDuested. Otherwis the P8' connection reDuest is rejected.

= &f the reDuested P8' type is &Pv;v:- and both &Pv; and &Pv: P8' types are allowed by subscription but not

&Pv;v:- the MM2 shall set the P8' type to &Pv; or &Pv: where the selection between &Pv; and &Pv: isimplementation specific. The 2 should then initiate the 2 reDuested P8' connectivity procedure to this P'

in order to activate a second P8' connection with the other sinle address P8' type which was not allocated by

the networ#.

'OT2 *H &f the MT and T2 are separated- the 2 miht not be able to use reason cause Lsinle address bearersonlyL as a trier for activatin a second sinle=stac# 2P" bearer.

The P8' G? may restrict the usae of a P8' type &Pv;v: as follows.

= &f the P8' G? receives a reDuest for P8' type &Pv;v:- but the P8' G? operator preferences dictate the use of

&Pv; addressin only or &Pv: prefi only for this P'- the P8' type shall be chaned to a sinle address P8'

type (&Pv; or &Pv:) and a reason cause shall be returned to the 2 indicatin that only the assined P8' type isallowed. &n this case the 2 shall not reDuest another P8' connection to the same P' for the other &P version.

= &f the P8' G? receives a reDuest for P8' type &Pv;v:- but the MM2 does not set the 8ual ddress 0earer

7la due to the MM2 operator usin sinle addressin per bearer to support interwor#in with nodes of earlierreleases the P8' type shall be chaned to a sinle &P version only and a reason cause shall be returned to the 2

indicatin that only sinle &P version per P8' connection is allowed. &n this case the 2 should reDuest anotherP8' connection for the other &P version usin the 2 reDuested P8' connectivity procedure to the same P'

with a sinle address P8' type (&Pv; or &Pv:) other than the one already activated.

8urin inter=/T mobility between 2=T/' and T/'AG2/'- an 2P" bearer with P8' type &Pv;v: shall be

mapped one=to=one to P8P type &Pv;v:.

8urin inter=/T mobility between 2=T/' and T/'AG2/'- an 2P" bearer with P8' type &Pv; shall be

mapped one=to=one to a P8P contet of P8P type &Pv;. n 2P" bearer with P8' type &Pv: shall be mapped one=to=oneto a P8P contet of P8P type &Pv:.

&t is the @P5M' operator that shall define in the subscription whether a dynamic @P5M' or BP5M' address may beused.

The 2P" 2 may indicate to the networ# within the Protocol 1onfiuration Options element that the 2 wants toobtain the &Pv; address with 8@1Pv;- which is a deferred &Pv; address allocation option- or durin the default bearer

activation procedure. This implies the followin behaviour both for static and dynamic address allocationH

= the 2 may indicate that it prefers to obtain an &Pv; address as part of the default bearer activation procedure. &n

such a case- the 2 relies on the 2P" networ# to provide &Pv; address to the 2 as part of the default beareractivation procedure.

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= the 2 may indicate that it prefers to obtain the &Pv; address after the default bearer setup by 8@1Pv;. That is-when the 2P" networ# supports 8@1Pv; and allows that- it does not provide the &Pv; address for the 2 as part

of the default bearer activation procedures. The networ# may respond to the 2 by settin the P8' ddress to+.+.+.+. fter the default bearer establishment procedure is completed- the 2 uses the connectivity with the 2P"

and initiates the &Pv; address allocation on its own usin 8@1Pv;. @owever- if the 2P" networ# provides &Pv;address to the 2 as part of the default bearer activation procedure- the 2 should accept the &Pv; address

indicated in the default bearer activation procedure.

= if the 2 sends no ddress llocation Preference- the P8' G? determines whether 8@1Pv; is used between

the 2 and the P8' G? (for the deferred &Pv; address allocation) or not- based on per P' confiuration

0oth 2P" networ# elements and 2 shall support the followin mechanismsH

a. &Pv; address allocation via default bearer activation- if &Pv; is supported.

b. A:; &Pv: prefi allocation via &Pv: "tateless ddress autoconfiuration accordin to /71 ;>:* J,>K- if &Pv: is

supportedI

7urthermore- the Protocol 1onfiuration Options may be used durin bearer activation to confiure parameters whichare needed for &P address allocation.

0oth 2P" networ# elements and 2 may support the followin mechanismsH

a. &Pv; address allocation and &Pv; parameter confiuration after the attach procedure via 8@1Pv; accordin to/71 *,3, J,CK and /71 ;+3C J*9KI

b. &Pv: parameter confiuration via "tateless 8@1Pv: accordin to /71 3<3: J*+K.

c. llocation of &Pv: prefies usin 8@1Pv: accordin to /71 3:33 J*,K.

2P" networ# elements may support the followin mechanismH

a. llocation of a static &Pv; address andAor a static &Pv: prefi based on subscription data in the @"".

&f the static &P addressAprefi is not stored in the @"" subscription record- it may be confiured on a per=user per=P'

basis in the 8@1PA/adiusA8iameter server and the P8' G? retrieves the &P addressAprefi for the 2 from the8@1PA/adiusA8iameter server. &n this case- static &P addressAprefi is allocated by the same procedures as the dynamic

&P addressAprefi allocation (i.e. in such cases it is transparent to the P8' G? if the &P address is static or dynamic).

&f the static &P addressAprefi is stored in the @"" subscription record- durin the default bearer establishment the P8'G? receives this static &P addressAprefi from "ervin G?. &n this case the P8' G? shall deliver the received

addressAprefi to the 2. The static &P addressAprefi is delivered to the 2 in the same way as a dynamic &PaddressAprefi. Thus it is transparent to the 2 whether the P5M' or the eternal P8' allocates the &P address and

whether the &P address is static or dynamic.

The followin clauses describe how the above listed &P address allocation mechanisms wor# when GTP based "9A"> is

used. The way of wor#in of the &P address allocation mechanisms for PM&P based "9A"> can be found inT" *3.;+* J*K.The procedures can be used both for P5M' (BP5M'A@P5M') or eternal P8' based &P address

allocation.

&n order to support 8@1P based &P address confiuration- the P8' G? shall act as the 8@1P server towards the 2

for both @P5M' assined dynamic and static &P addressin and for BP5M' assined dynamic &P addressin. ?hen8@1P is used for eternal P8' assined addressin and parameter confiuration- the P8' G? shall act as the 8@1P

server towards the 2 and it shall act as the 8@1P client towards the eternal 8@1P server. The "ervin G? does nothave any 8@1P functionality. &t forwards pac#ets- includin 8@1P pac#ets- between the 2 and the P8' G?.

&Pv: "tateless ddress autoconfiuration specified in /71 ;>:* J,>K is the basic mechanism to allocate A:; &Pv: prefito the 2.

8urin default bearer establishment- the P8' G? sends the &Pv: prefi and &nterface &dentifier to the "=G?- and then

the "=G? forwards the &Pv: prefi and &nterface &dentifier to the MM2 or to the "G"'. The MM2 or the "G"'

forwards the &Pv: &nterface &dentifier to the 2. The MM2 does not forward the &Pv: prefi to the 2. &f the 2receives the &Pv: prefi from the "G"' durin P8P 1ontet ctivation procedure- it shall inore it.

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!.3.1.2 :P a##ress a$$"cati"', re'ea$ a'# re$ease 6echa'is6s "r GTP ase#S!S<

!.3.1.2.1 :P54 a##ress a$$"cati"' 5ia #eau$t earer acti5ati"' a'# re$ease 5ia P*c"''ecti"' re$ease

n &Pv; address may be provided to the 2 as part of the default bearer activation and the &Pv; address is releasedwhen P8' connection associated with the &Pv; address is released.

?hen the P5M' allocates an &Pv; address- it is the P8' G? responsibility to allocate and release the &Pv; address.The P8' G? may use an internal &Pv; address pool in this case. The P8' G? allocates an &Pv; address upon default

bearer activation and it releases the &Pv; address upon P8' connection release associated with the &Pv; address for aiven 2.

'OT2H &f the P8' type is &Pv;v:- when the P8' 1onnection is released- the &Pv: address is also released.

?hen an &Pv; address is allocated from an eternal P8'- it is the P8' G? responsibility to obtain the &Pv; address

from the eternal P8'- and to allocate- renew and release the &Pv; address. The P8' G? may use 8@1Pv; to obtain-renew and release the &Pv; address from the eternal P8'. &f /8&" or 8iameter is used towards the eternal P8'-

as described in T" *C.+:, J3>K- the &P address can be obtained- renewed and released as part of these procedures. &f8@1Pv; is used- the P8' G? functions as a 8@1Pv; 1lient. &f /8&" is used- the P8' G? functions as a

/8&" 1lient. &f 8iameter is used- the P8' G? functions as a 8iameter 1lient.

fter releasin the &Pv; address- the P8' G? should not assin that &Pv; address to other user immediately.

!.3.1.2.2 &$$"cati"', re'ea$ a'# re$ease " the :P5 #eau$t %rei/ 5ia :P5 state$essa##ress aut"c"'igurati"'

?hen the P5M' allocates an &Pv: prefi- it is the P8' G? responsibility to allocate and release the &Pv: prefi. TheP8' G? may use an internal &Pv: prefi pool in this case. The P8' G? allocates a lobally uniDue A:; &Pv: prefi

via /outer dvertisement to a iven 2.

?hen an &Pv: prefi is allocated from an eternal P8'- it is the P8' G? responsibility to obtain the &Pv: prefi fromthe eternal P8' and to allocate- renew and release the &Pv: prefi. The P8' G? may use 8@1Pv: to obtain the &Pv: prefi from the eternal P8'. &n this case- the P8' G? functions as a 8@1Pv: client. &f /8&" or 8iameter is used

towards the eternal P8' as described in T" *C.+:, J3>K- the &Pv: prefi can be obtained- renewed and released as part

of these procedures. &f /8&" is used- the P8' G? functions as the /8&" 1lient. &f 8iameter is used- the P8'G? functions as the 8iameter 1lient.

The procedure of stateless &Pv: address autoconfiuration is the followinH fter default bearer establishment the 2

may send a /outer "olicitation messae to the P8' G? to solicit a /outer dvertisement messae. The P8' G?sends a /outer dvertisement messae (solicited or unsolicited) to the 2. The /outer dvertisement messaes shall

contain the same &Pv: prefi as the one provided durin default bearer establishment. &f the 2 receives an &Pv: prefifrom a "G"' durin the P8P 1ontet activation procedure- it shall inore it.

fter the 2 has received the /outer dvertisement messae- it constructs a full &Pv: address via &Pv: "tatelessddress autoconfiuration in accordance with /71 ;>:* J,>K. To ensure that the lin#=local address enerated by the

2 does not collide with the lin#=local address of the P8' G?- the P8' G? shall provide an interface identifier (see/71 ;>:* J,>K) to the 2 and the 2 shall use this interface identifier to confiure its lin#=local address. 7or stateless

address autoconfiuration however- the 2 can choose any interface identifier to enerate &Pv: addresses- other than

lin#=local- without involvin the networ#. @owever- the 2 shall not use any identifiers defined in T" *3.++3 JCK as the basis for eneratin the interface identifier. 7or privacy- the 2 may chane the interface identifier used to enerate full

&Pv: address- as defined in T" *3.**, J*<K without involvin the networ#.

ny prefi that the P8' G? advertises to the 2 is lobally uniDue. The P8' G? shall also record the relationship between the 2$s identity (&M"&) and the allocated &Pv: prefi. 0ecause any prefi that the P8' G? advertises to the

2 is lobally uniDue- there is no need for the 2 to perform 8uplicate ddress 8etection for any &Pv: addressconfiured from the allocated &Pv: prefi. 2ven if the 2 does not need to use 'eihbor "olicitation messaes for

8uplicate ddress 8etection- the 2 may- for eample- use them to perform 'eihbor nreachability 8etectiontowards the P8' G?- as defined in /71 ;>:, J3*K. Therefore- the P8' G? shall respond with a 'eihbor

dvertisement upon receivin a 'eihbor "olicitation messae from the 2.

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&n order to renew the allocated &Pv: prefi- the P8' G? sends a /outer dvertisement (solicited or unsolicited) to the2 with the same prefi and new non=!ero values in preferred and valid lifetime fields.

&n order to release the allocated &Pv: prefi- the P8' G? shall initiate the P8' connection release procedure. ponrelease of the P8' connection- the 2 shall implicitly release the prefi for the correspondin P8' connection.

'OT2 *H &f the P8' type is &Pv;v:- when the P8' 1onnection is released- the &Pv; address is also released.

fter releasin the &Pv: prefi- the P8' G? should not assin that &Pv: prefi to other user immediately.

!.3.1.2.3 :P5 %ara6eter c"'igurati"' 5ia state$ess 7+P5

The 2 may use stateless 8@1Pv: for additional parameter confiuration. The P8' G? acts as the 8@1P server.

?hen P5M' based parameter confiuration is used- the P8' G? provides the reDuested parameters from locally provisioned database. ?hen eternal P8' based parameter confiuration is used- the P8' G? obtains the reDuested

confiuration parameters from the eternal P8' as described in the previous clauses. ?hen the P8' G? acts as a8@1Pv: server towards the 2- the P8' G? may act as 8@1Pv: client towards the eternal P8' to reDuest the

confiuration parameters for the 2. &f /8&" or 8iameter is used towards the eternal P8' as described inT" *C.+:, J3>K- the reDuested confiuration parameters can be fetched as part of these procedures.

!.3.1.2.4 :P54 a##ress a$$"cati"', re'ea$ a'# re$ease a'# :P54 %ara6eter c"'igurati"'5ia 7+P54

?hen the P5M' allocates an &Pv; address- it is the P8' G? responsibility to allocate- renew and release the &Pv;address.

?hen eternal P8' allocation is used- the P8' G? functions as a 8@1Pv; server towards the 2. The P8' G?may act as a 8@1P 1lient when interactin with a 8@1Pv; server in the eternal P8' in order to obtain- renew and

release the &Pv; address and to obtain the confiuration parameters. Or- if /8&" or 8iameter is used towards the

eternal P8' as described in T" *C.+:, J3>K- the &Pv; address and the reDuested confiuration parameters can beobtained- renewed and released as part of these procedures.

&f dynamic policy provisionin is deployed- and the P1/7 was not informed about the &Pv; address at &P=1' session

establishment- the P8' G? shall initiate an &P=1' "ession Modification procedure to inform the P1/7 about anallocated &Pv; address. &f the &Pv; address is released- the P8' G? shall inform the P1/7 about the de=allocation of

an &Pv; address.

&f the 2 sends 8@1Pv; lease renewal messae to renew the lease of the allocated &Pv; address- the P8' G? shall

renew the lease of the allocated &Pv; address. &f the &Pv; address was obtained from an eternal P8'- the P8' G?shall perform the 8@1Pv; lease renewal procedure with the eternal P8' if 8@1Pv; was used for obtainin &Pv;

address from eternal P8'. &f 8iameter or /8&" procedures where used to obtain the &Pv; address from eternalP8'- the P8' G? may perform correspondin update procedures as applicable. &f the eternal P8' etends lease of

the allocated &Pv; address- the P8' G? responds accordinly to the 2. Otherwise- if the eternal P8' does not

etend the lease of the allocated &Pv; address- the P8' G? responds with the remainin lease time of the &Pv; address.&f there is no P8' address allocated to the 2 for this P8' connection- the P8' G? shall perform P8' G? initiated

bearer deactivation procedure as defined in clause 9.;.;.,.

&f the 2 sends 8@1Pv; release messae to release the allocated &Pv; address for the P8' connection- the P8' G?may anytime thereafter release the &Pv; address. &f the P8' connection has no allocated P8' address- the P8' G?

may at any time initiate P8' G? initiated bearer deactivation procedure as defined in clause 9.;.;.,.

'OT2H &f the P8' type is &Pv;v: the release of the allocated &Pv; address does not mean that there is no

allocated P8' address for the P8' connection- as the &Pv: prefi still remains allocated to that P8'connection.

&f the P8' connection is released without any 8@1Pv; release sinallin with the 2- the 2 and the P8' G? shallrelease the &Pv; address implicitly- as soon as the P8' connection is released.

fter releasin the &Pv; address- the P8' G? should not assin that &Pv; address to any other user immediately.

!.3.1.2.! V"i#

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!.3.1.2. :P5 Prei/ e$egati"' 5ia 7+P5

Optionally a sinle networ# prefi shorter than the default A:; prefi may be assined to a P8' connection. &n this case-

the A:; default prefi used for &Pv: stateless autoconfiuration will be allocated from this networ# prefiI the remainin

address space from the networ# prefi can be deleated to the P8' connection usin prefi deleation after the default bearer establishment and &Pv: prefi allocation via &Pv: stateless address autoconfiuration as defined in

clause 9.3.,.*.*. ?hen P5M' based parameter confiuration is used- the P8' G? provides the reDuested &Pv: prefifrom a locally provisioned pool. ?hen eternal P8' based &Pv: prefi allocation is used- the P8' G? obtains the prefi from the eternal P8'.

'OT2H llocation of &Pv: prefies with fleible prefi lenth can leverae e.. local confiuration on theP8' G? or interaction with the server.

The address space provided is maintained as an &Pv: address space pool available to the P8' connection for 8@1Pv:&Pv: prefi reDuests with the eclusion of the &Pv: prefi that is allocated to the P8' connection durin default bearer

establishment as defined in clause 9.3.,.*.*. The total &Pv: address space available for the P8' connection (2 default bearer prefi and 2 P8' connection &Pv: address space pool) shall be possible to areate into one &Pv: prefi that

will represent all &Pv: addresses that the 2 may use. &f the 2 had indicated that it supports prefi eclusion and the

prefi to be deleated to the 2 includes the A:; prefi that was allocated to the P8' 1onnection- the P8' G? shallutilise the prefi eclusion feature as specified for 8@1Pv: Prefi 8eleation in draft=ietf=dhc=pd=eclude=+; J<+K.

The 2 uses 8@1Pv: to reDuest additional &Pv: prefies (i.e. prefies in addition to the default prefi) from the P8'

G? after completin stateless &Pv: address autoconfiuration procedures. The 2 acts as a L/eDuestin /outerL asdescribed in /71 3:33 J*,K and inserts one or more &P8 option(s) into a 8@1Pv: "olicit messae sent from the 2

to the P8' G?. The P8' G? acts as the 8@1P server and fulfils the role of a L8eleatin /outerL accordin to/71 3:33 J*,K. The 2 optionally includes the /P&81OMM&T option in the 8@1Pv: "olicit messae to trier

two=messae 8@1Pv: procedure instead of the four=messae 8@1Pv: procedure. The 2 shall includeOPT&O'P82F1582 option code in an OPT&O'O/O option to indicate support for prefi eclusion. &n response

to the 8@1Pv: "olicit messae- the 2 receives a 8@1Pv: /eply messae with one or more &P8 prefi(es) forevery &P8 option that it sent in the 8@1Pv: "olicit messae. The P8' G? deleates a prefi ecludin the default

prefi with help of OPT&O'P82F1582. Prefi eclusion procedures shall follow draft=ietf=dhc=pd=eclude=+; J<+K.

!.3.2 &ttach %r"ce#ure

!.3.2.1 E-UTR&* :'itia$ &ttach

2Auser needs to reister with the networ# to receive services that reDuire reistration. This reistration is describedas 'etwor# ttachment. The always=on &P connectivity for 2Ausers of the 2P" is enabled by establishin a default

2P" bearer durin 'etwor# ttachment. The P11 rules applied to the default 2P" bearer may be predefined in theP8' G? and activated in the attachment by the P8' G? itself. The ttach procedure may trier one or multiple

8edicated 0earer 2stablishment procedures to establish dedicated 2P" bearer(s) for that 2. 8urin the attach procedure- the 2 may reDuest for an &P address allocation. Terminals utilisin only &2T7 based mechanisms for &P

address allocation are also supported.

8urin the &nitial ttach procedure the Mobile 2Duipment &dentity is obtained from the 2. The MM2 operator maychec# the M2 &dentity with an 2&/. The MM2 passes the M2 &dentity (&M2&"B) to the @"" and to the P8' G?.

8urin the &nitial ttach procedure- if the MM2 supports "/B11 and if any of the conditions described in step > in

7iure9.3.*.,=, are satisfied- the MM2 informs the @"" with the 2 "/B11 capability e.. for further &M"

reistration.

The 2=T/' &nitial ttach procedure is used for 2merency ttach by 2s that need to perform emerency services but cannot ain normal services from the networ#. These 2s are in limited service state as defined in T" *3.,** J,+K.

lso 2s that had attached for normal services and do not have emerency bearers established and are camped on a cellin limited service state (e.. restricted Trac#in rea or not allowed 1"G) shall initiate the ttach procedures indicatin

that the attach is to receive emerency services. 2s that camp normally on a cell- i.e. 2s that are not in limitedservice state- should initiate normal initial attach when not already attached and shall initiate the 2 /eDuested P8'

1onnectivity procedure to receive emerency 2P" bearer services.

'OT2 ,H 2 that is emerency attached performs initial attach procedure before bein able to obtain normal

services.

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&n order to limit load on the networ#- only when performin an 2=T/' ttach with a new P5M' (i.e. not thereistered P5M' or an eDuivalent P5M' of the reistered P5M')- a 2 confiured to perform ttach with &M"& at

P5M' chane (see T" *;.3:> J:CK) shall identify itself by its &M"& instead of any stored temporary identifier.

This procedure is also used to establish the first P8' connection over 2=T/' when the 2 already has active P8'

connections over a non=3GPP access networ# and wants to establish simultaneous P8' connections to different P's

over multiple accesses.

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3. :#e'tiicati"' ReDuest

1. &ttach ReDuest

'e MME 8$# MMESGS*

Ser5i'g GA P+R 7SS

3. :#e'tiicati"' Res%"'se

P* GA

2. &ttach ReDuest

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4. :#e'tit; ReDuest

4. :#e'tit; Res%"'se

!a. &uthe'ticati"' Securit;

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1<. RR+ +"''ecti"' Rec"'igurati"'

20. :'itia$ +"'te/t Setu% Res%"'se

24. M"#i; Cearer Res%"'se

23. M"#i Cearer Re uest

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2!. *"ti; ReDuest

2. *"ti; Res%"'se

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(A)

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12. +reate Sessi"' ReDuest

<. U%#ate L"cati"' ReDuest

. +a'ce$ L"cati"'

11. U%#ate L"cati"' &cB

. +a'ce$ L"cati"' &cB

10. e$ete Sessi"' ReDuest

10. e$ete Sessi"' Res%"'se


1!. +reate Sessi"' Res%"'se

. e$ete Sessi"' Res%"'se

. e$ete Sesi"' ReDuest

irst "'$i'B ata (i '"t ha'#"5er)

(9)

E:R

. ME :#e'tit; +hecB !. :#e'tit; ReDuestRes%"'se

10. P+E :'itiate# :P-+&*Sessi"' Ter6i'ati"'

. P+E :'itiate# :P-+&*Sessi"' Ter6i'ati"'

14. P+E :'itiate# :P-+&* Sessi"'Esta$ish6e'tM"#iicati"'

. +i%here# 8%ti"'s ReDuest

. +i%here# 8%ti"'s Res%"'se

23a. M"#i Cearer Re uest


(=)

21. irect Tra'ser 22. &ttach +"6%$ete

()

(0)

0i1ure +'3'&'%$%2 Attach procedure

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'OT2 *H 7or a PM&P=based "9A">- procedure steps ()- (0)- and (1) are defined in T" *3.;+* J*K. "teps <- ,+- ,3-,;- ,9 and *3aAb concern GTP based "9A">.

'OT2 3H The "ervin G?s and P8' G?s involved in steps < andAor ,+ may be different to those in steps ,3=,9.

'OT2 ;H The steps in (8) are eecuted only upon handover from non=3GPP access.

'OT2 9H More detail on procedure steps (2) is defined in the procedure steps (0) in clause 9.3.>.3.

'OT2 :H More detail on procedure steps (7) is defined in the procedure steps (0) in clause 9.3.>.;.

,. The 2 initiates the ttach procedure by the transmission- to the e'ode0- of an ttach /eDuest (&M"& or oldGT&- Old GT& type- last visited T& (if available)- 2 1ore 'etwor# 1apability- 2 "pecific 8/F

parameters- ttach Type- 2"M messae container (/eDuest Type- P8' Type- Protocol 1onfiuration Options-1iphered Options Transfer 7la)- %"&"M2- '" seDuence number- '"=M1- additional GT&- P=TM"&

sinature- Boice domain preference and 2$s usae settin- M" 'etwor# 1apability) messae toether with//1 parameters indicatin the "elected 'etwor# and the old GMM2&. &f the 2 identifies itself with the old

GT&- the 2 shall set the Old GT& Type to indicate whether the Old GT& is a native GT& or is mapped

from a P=TM"& and /&. The old GT& may be derived from a P=TM"& and /&. &M"& shall be included if the2 does not have a valid GT& or a valid P=TM"& available- or if the 2 is confiured to perform ttach with

&M"& at P5M' chane and is accessin a new P5M'. The 2 stores the T&' in detached state. &f the 2$s T&'indicates LGT&L or L/T=related TM"&L and the 2 holds a valid GT& then the old GT& indicates this validGT&. &f the 2$s T&' indicates LP=TM"&L and the 2 holds a valid P=TM"& and related /& then these two

elements are indicated as the old GT&. Mappin a P=TM"& and /& to a GT& is specified in T" *3.++3 JCK. &fthe 2 holds a valid GT& and the old GT& indicates a GT& mapped from a P=TM"& and /&- then the 2

indicates the GT& as additional GT&. &f the old GT& indicates a GT& mapped from a P=TM"& and /& andthe 2 has a valid P=TM"& sinature associated to it- the P=TM"& sinature shall be included. The 2 sets the

voice domain preference and 2$s usae settin accordin to its confiuration- as described in clause ;.3.9.C.

&f available- the last visited T& shall be included in order to help the MM2 produce a ood list of T&s for any

subseDuent ttach ccept messae. "elected 'etwor# indicates the P5M' that is selected for networ# sharin purposes. The //1 parameter Lold GMM2&L ta#es its value from the Lold GT&L contained in the ttach

/eDuest. 2 'etwor# 1apability is described in 2 capabilities- see clause 9.,,.

&f the 2 has valid security parameters- the ttach /eDuest messae shall be interity protected by the '"=

M1 in order to allow validation of the 2 by the MM2. %"&"M2- '" seDuence number and '"=M1 areincluded if the 2 has valid 2P" security parameters. '" seDuence number indicates the seDuential number of

the '" messae. &f the 2 does not have a valid 2P" security association- then the ttach /eDuest messae isnot interity protected. &n this case the security association is established in step 9a. The 2 networ# capabilities

indicate also the supported '" and " security alorithms. P8' type indicates the reDuested &P version (&Pv;-&Pv;A&Pv:- &Pv:). Protocol 1onfiuration Options (P1O) are used to transfer parameters between the 2 and the

P8' G?- and are sent transparently throuh the MM2 and the "ervin G?. The Protocol 1onfiurationOptions may include the ddress llocation Preference indicatin that the 2 prefers to obtain an &Pv; address

only after the default bearer activation by means of 8@1Pv;. &f the 2 intends to send P1O which reDuirecipherin (e..- PPA1@P usernames and passwords) or send an P'- or both- the 2 shall set the 1iphered

Options Transfer 7la and send P1O or P' or both only after authentication and '" security setup have been

completed (see below). &f the 2 has T/' or G2/' capabilities- it shall send the '/" in the P1O toindicate the support of the networ# reDuested bearer control in T/'AG2/'. The 2 sends the 2T7T inthe P1O to indicate the support of the etended T7T filter format. /eDuest Type is included in the 2"M messae

container and indicates L@andoverL when the 2 has already an activated P8' G?A@ due to mobility withnon=3GPP accesses. ttach Type indicates whether it is an 2P" attach or a combined 2P"A&M"& attach or an

2merency ttach.

'OT2 <H 2ternal networ# operators wantin to use PP for authentication are warned that PP is an obsolete

protocol from a security point of view. 1@P provides stroner security than PP.

7or an 2merency ttach the 2 shall set both the ttach Type and the /eDuest Type to L2merencyL and the

&M"& shall be included if the 2 does not have a valid GT& or a valid P=TM"& available. The &M2& shall beincluded when the 2 has no &M"&- no valid GT& and no valid P=TM"&.

*. The e'ode0 derives the MM2 from the //1 parameters carryin the old GMM2& and the indicated "elected 'etwor#. &f that MM2 is not associated with the e'ode0 or the old GMM2& is not available- the e'ode0

selects an MM2 as described in clause ;.3.>.3 on LMM2 selection functionL. The e'ode0 forwards the ttach

/eDuest messae to the new MM2 contained in a ",=MM2 control messae (&nitial 2 messae) toether with

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the "elected 'etwor#- 1"G access mode- 1"G &8- 5=G? address- and T&S21G& of the cell from where itreceived the messae to the new MM2. 1"G &8 is provided if the 2 attaches via a 1"G cell or hybrid cell.

1"G access mode is provided if the 2 attaches via a hybrid cell. &f the 1"G access mode is not provided butthe 1"G &8 is provided- the MM2 shall consider the cell as a 1"G cell. &f the e'ode0 has a collocated 5=G?- it

includes the 5=G? address in the &nitial 2 messae to the MM2.

&f the MM2 is not confiured to support 2merency ttach the MM2 shall reject any ttach /eDuest thatindicates ttach Type L2merencyL.

3. &f the 2 identifies itself with GT& and the MM2 has chaned since detach- the new MM2 determines the type

of the old node- i.e. MM2 or "G"'- as specified in clause ;.3.,C- uses the GT& received from the 2 to derivethe old MM2A"G"' address- and sends an &dentification /eDuest (old GT&- complete ttach /eDuest messae)

to the old MM2A"G"' to reDuest the &M"&. &f the reDuest is sent to an old MM2- the old MM2 first verifies thettach /eDuest messae by '" M1 and then responds with &dentification /esponse (&M"&- MM 1ontet). &f

the reDuest is sent to an old "G"'- the old "G"' first verifies the ttach /eDuest messae by the P=TM"&sinature and then responds with &dentification /esponse (MM 1ontet). &f the 2 is not #nown in the old

MM2A"G"' or if the interity chec# or P=TM"& sinature chec# for the ttach /eDuest messae fails- the oldMM2A"G"' responds with an appropriate error cause. The MM contet contains security related information as

well as other parameters (includin &M"&) as described in clause 9.<.* (&nformation "torae for MM2).

The additional GT& in the ttach /eDuest messae allows the new MM2 to find any already eistin 2contet stored in the new MM2 when the old GT& indicates a GT& mapped from a P=TM"& and /&.

7or an 2merency ttach if the 2 identifies itself with a temporary identity that is not #nown to the MM2 the

MM2 immediately reDuests the &M"& from the 2. &f the 2 identifies itself with &M2&- the &M"& reDuest shall be s#ipped.

'OT2 >H "G"' always responds with the MT" security parameters and the MM2 may store it for later use.

;. &f the 2 is un#nown in both the old MM2A"G"' and new MM2- the new MM2 sends an &dentity /eDuest to

the 2 to reDuest the &M"&. The 2 responds with &dentity /esponse (&M"&).

9a &f no 2 contet for the 2 eists anywhere in the networ#- if the ttach /eDuest (sent in step ,) was notinterity protected- or if the chec# of the interity failed- then authentication and '" security setup to activate

interity protection and '" cipherin are mandatory. Otherwise it is optional. &f '" security alorithm is to

be chaned- the '" security setup is performed in this step. The authentication and '" security setupfunctions are defined in clause 9.3.,+ on L"ecurity 7unctionL.

&f the MM2 is confiured to support 2merency ttach for unauthenticated &M"&s and the 2 indicated ttachType L2merencyL the MM2 s#ips the authentication and security setup or the MM2 accepts that the

authentication may fail and continues the attach procedure.

fter step 9a- all '" messaes shall be protected by the '" security functions (interity and cipherin)

indicated by the MM2 unless the 2 is emerency attached and not successfully authenticated.

9b. The M2 &dentity (&M2&"B) shall be retrieved from the 2. The M2 identity shall be transferred encrypted

unless the 2 performs 2merency ttach and cannot be authenticated.

7or an 2merency ttach- the 2 may have included the &M2& in the 2merency ttach. &f so- the M2 &dentity

retrieval is s#ipped.

&n order to minimise sinallin delays- the retrieval of the M2 &dentity may be combined with '" security

setup in step 9a. The MM2 may send the M2 &dentity 1hec# /eDuest (M2 &dentity- &M"&) to the 2&/. The 2&/shall respond with M2 &dentity 1hec# c# (/esult). 8ependent upon the /esult- the MM2 decides whether to

continue with this ttach procedure or to reject the 2.

7or an 2merency ttach- the &M2& chec# to the 2&/ may be performed. &f the &M2& is bloc#ed- operator

policies determine whether the 2merency ttach procedure continues or is stopped.

:. &f the 2 has set the 1iphered Options Transfer 7la in the ttach /eDuest messae- the 1iphered Options i.e.

P1O or P' or both- shall now be retrieved from the 2.

&n order to handle situations where the 2 may have subscriptions to multiple P8's- if the Protocol

1onfiuration Options contains user credentials (e.. user nameApassword within PP or 1@P parameters) thenthe 2 should also send the P' to the MM2.

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<. &f there are active bearer contets in the new MM2 for this particular 2 (i.e. the 2 re=attaches to the sameMM2 without havin properly detached before)- the new MM2 deletes these bearer contets by sendin 8elete

"ession /eDuest (50&) messaes to the G?s involved. The G?s ac#nowlede with 8elete "ession /esponse(1ause) messae. &f a P1/7 is deployed- the P8' G? employs an &P=1' "ession Termination procedure to

indicate that resources have been released.

>. &f the MM2 has chaned since the last detach- or if there is no valid subscription contet for the 2 in the MM2-or if the 2 provides an &M"& or the 2 provides an old GT& which doesn$t refer to a valid contet in theMM2- or for some networ# sharin scenario (e.. G?1') if the P5M'=&8 of the T& supplied by the e'ode0

is different from that of the GT& in the 2$s contet- the MM2 sends an pdate 5ocation /eDuest (MM2&dentity- &M"&- M2 &dentity (&M2&"B)- MM2 1apabilities- 5/=7las- @omoeneous "upport of &M" Boice

over P" "essions- 2 "/B11 capability- eDuivalent P5M' list) messae to the @"". The MM2 capabilities

indicate the MM2$s support for reional access restrictions functionality. 5/=7las indicates L&nitial=ttach=

&ndicatorL as this is an ttach procedure. The inclusion of the eDuivalent P5M' list indicates that the MM2supports the inter=P5M' handover to a 1"G cell in an eDuivalent P5M' usin the subscription information of

the taret P5M'. The L@omoenous "upport of &M" Boice over P" "essionsL indication (see clause ;.3.9.>)shall not be included unless the MM2 has completed its evaluation of the support of L&M" Boice over P"

"essionL as specified in clause ;.3.9.>.

'OT2 CH t this step- the MM2 may not have all the information needed to determine the settin of the &M" Boice

over P" "ession "upported indication for this 2 (see clause ;.3.9.>). @ence the MM2 can send theL@omoenous "upport of &M" Boice over P" "essionsL later on in this procedure.

&f the 2 performs &nitial or @andover ttach in a BP5M' supportin utonomous 1"G /oamin and the

@P5M' has enabled utonomous 1"G /oamin in the BP5M' (via "ervice 5evel reement) and the MM2needs to retrieve the 1"G subscription information of the 2 from the 1""- the MM2 initiates the pdate 1"G

5ocation Procedure with 1"" as described in clause 9.3.,*.

&f the MM2 determines that only the 2 "/B11 capability has chaned- the MM2 sends a 'otify /eDuest tothe @"" to inform about the chaned 2 "/B11 capability.

7or an 2merency ttach in which the 2 was not successfully authenticated- the MM2 shall not send anpdate 5ocation /eDuest to the @"".

C. The @"" sends 1ancel 5ocation (&M"&- 1ancellation Type) to the old MM2. The old MM2 ac#nowledes with

1ancel 5ocation c# (&M"&) and removes the MM and bearer contets. &f the 5/=7las indicates L&nitial=ttach=&ndicatorL and the @"" has the "G"' reistration- then the @"" sends 1ancel 5ocation (&M"&-

1ancellation Type) to the old "G"'. The 1ancellation Type indicates the old MM2A"G"' to release the old

"ervin G? resource.

,+. &f there are active bearer contets in the old MM2A"G"' for this particular 2- the old MM2A"G"' deletes

these bearer contets by sendin 8elete "ession /eDuest (50&) messaes to the G?s involved. The G?s return8elete "ession /esponse (1ause) messae to the old MM2A"G"'. &f a P1/7 is deployed- the P8' G?

employs an &P=1' "ession Termination procedure as defined in T" *3.*+3 J:K to indicate that resources have been released.

,,. The @"" ac#nowledes the pdate 5ocation messae by sendin an pdate 5ocation c# (&M"&- "ubscriptiondata) messae to the new MM2. The "ubscription 8ata contain one or more P8' subscription contets. 2ach

P8' subscription contet contains an $2P" subscribed Eo" profile$ and the subscribed P'=M0/ (see

clause ;.<.3). The new MM2 validates the 2$s presence in the (new) T. &f due to reional subscriptionrestrictions or access restrictions (e.. 1"G restrictions) the 2 is not allowed to attach in the T or due to

subscription chec#in fails for other reasons- the new MM2 rejects the ttach /eDuest with an appropriate

cause. &f all chec#s are successful then the new MM2 constructs a contet for the 2. &f the P' provided bythe 2 is not allowed by subscription- or the pdate 5ocation is rejected by the @""- the new MM2 rejects the

ttach /eDuest from the 2 with an appropriate cause.

The "ubscription 8ata may contain 1"G subscription information for the reistered P5M' and for the

eDuivalent P5M' list reDuested by MM2 in step >.

&f the 2 provided P' is authori!ed for 5&P accordin to the user subscription- the MM2 shall use the 1"G

"ubscription 8ata to authori!e the connection.

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7or an 2merency ttach the MM2 shall not chec# for access restrictions- reional restrictions or subscriptionrestrictions (e.. 1"G restrictions). 7or an 2merency ttach- the MM2 shall inore any unsuccessful pdate

5ocation /esponse from @"" and continue with the ttach procedure.

,*. 7or an 2merency ttach the MM2 applies the parameters from MM2 2merency 1onfiuration 8ata for the

emerency bearer establishment performed in this step and any potentially stored &M"& related subscription data

are inored by the MM2.

&f the 2 performs &nitial or @andover ttach via a 1"G cell and there is no subscription for that 1"G or the

1"G subscription is epired the MM2 shall reject the ttach /eDuest with an appropriate cause. &f the 2 has

this 1"G &8 and associated P5M' on its llowed 1"G list the 2 shall remove the 1"G &8 and associatedP5M' from the list when receivin this reject cause.

&f a subscribed P8' address is allocated for the 2 for this P'- the P8' subscription contet contains the2$s &Pv; address andAor the &Pv: prefi and optionally the P8' G? identity. &f the P8' subscription contet

contains a subscribed &Pv; address andAor &Pv: prefi- the MM2 indicates it in the P8' address. 7or /eDuestType indicatin L&nitial reDuestL- if the 2 does not provide an P'- the MM2 shall use the P8' G?

correspondin to the default P' for default bearer activation. &f the 2 provides an P'- this P' shall beemployed for default bearer activation. 7or /eDuest Type indicatin L@andoverL- if the 2 provides an P'- the

MM2 shall use the P8' G? correspondin to the provided P' for default bearer activation- &f the 2 does

not provide an P'- and the subscription contet from @"" contains a P8' G? identity correspondin to thedefault P'- the MM2 shall use the P8' G? correspondin to the default P' for default bearer activation.The case where the /eDuest Type indicates L@andoverL and the 2 does not provide an P'- and the

subscription contet from @"" does not contain a P8' G? identity correspondin to the default P'

constitutes an error case. &f the /eDuest Type indicates L&nitial reDuestL and the selected P8' subscriptioncontet contains no P8' G? identity the new MM2 selects a P8' G? as described in clause ;.3.>., on P8'

G? selection function (3GPP accesses). &f the P8' subscription contet contains a dynamically allocated P8'

G? identity and the /eDuest Type does not indicate L@andoverL the MM2 may select a new P8' G? asdescribed in clause P8' G? selection function- e.. to allocate a P8' G? that allows for more efficient

routin.

7or initial and handover 2merency ttach the MM2 uses the P8' G? "election function defined in "ection

;.3.,*.; to select a P8' G?.

The new MM2 selects a "ervin G? as described in clause ;.3.>.* on "ervin G? selection function and

allocates an 2P" 0earer &dentity for the 8efault 0earer associated with the 2. Then it sends a 1reate "ession/eDuest (&M"&- M"&"8'- MM2 T2&8 for control plane- P8' G? address- P8' ddress- P'- /T type-

8efault 2P" 0earer Eo"- P8' Type- P'=M0/- 2P" 0earer &dentity- Protocol 1onfiuration Options-

@andover &ndication- M2 &dentity (&M2&"B)- ser 5ocation &nformation (21G&)- 2 Time None- ser 1"G&nformation- M" &nfo 1hane /eportin support indication- "election Mode- 1harin 1haracteristics- Trace

/eference- Trace Type- Trier &d- OM1 &dentity- Maimum P' /estriction- 8ual ddress 0earer 7la- the

Protocol Type over "9A">- "ervin 'etwor#) messae to the selected "ervin G?. ser 1"G &nformationincludes 1"G &8- access mode and 1"G membership indication.

&f the /eDuest Type indicates L2merencyL- Maimum P' restriction control shall not be performed.

7or emerency attached 2s &M"& is included if available and if the &M"& cannot be authenticated then the &M"&shall be mar#ed as unauthenticated.

The /T type is provided in this messae for the later P11 decision. The subscribed P'=M0/ for the P'is also provided in this messae. The M"&"8' is included if provided in the subscription data from the @"".

@andover &ndication is included if the /eDuest Type indicates handover. "election Mode indicates whether a

subscribed P' was selected- or a non=subscribed P' sent by the 2 was selected. 1harin 1haracteristicsindicates which #ind of charin the bearer contet is liable for. The MM2 may chane the reDuested P8' type

accordin to the subscription data for this P' as described in clause 9.3.,.,. The MM2 shall set the 8ualddress 0earer 7la when the P8' type is set to &Pv;v: and all "G"'s which the 2 may be handed over to

are /elease > or above supportin dual addressin- which is determined based on node pre=confiuration by theoperator. The Protocol Type over "9A"> is provided to "ervin G? which protocol should be used over "9A">

interface.

The charin characteristics for the P" subscription and individually subscribed P's as well as the way of

handlin 1harin 1haracteristics and whether to send them or not to the P=G? is defined in T" 3*.*9, J;;K.The MM2 shall include Trace /eference- Trace Type- Trier &d- and OM1 &dentity if "=G? andAor P=G? trace

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&f dynamic P11 is deployed and the @andover &ndication is present- the P8' G? eecutes a P127 &nitiated&P=1' "ession Modification procedure with the P1/7 as specified in T" *3.*+3 J:K to report the new &P=1'

type. 8ependin on the active P11 rules- the establishment of dedicated bearers for the 2 may be reDuired. Theestablishment of those bearers shall ta#e place in combination with the default bearer activation as described in

nne 7. This procedure can continue without waitin for a P1/7 response. &f chanes to the active P11 rulesare reDuired- the P1/7 may provide them after the handover procedure is finished.

&n both cases (@andover &ndication is present or not)- if dynamic P11 is not deployed- the P8' G? may applylocal Eo" policy. This may lead to the establishment of a number of dedicated bearers for the 2 followin the

procedures defined in clause 9.;., in combination with the establishment of the default bearer- which isdescribed in nne 7.

&f the 1"G information reportin triers are received from the P1/7- the P8' G? should set the 1"G&nformation /eportin ction &2 accordinly.

,9. The P=G? creates a new entry in its 2P" bearer contet table and enerates a 1harin &d for the 8efault0earer. The new entry allows the P=G? to route user plane P8s between the "=G? and the pac#et data

networ#- and to start charin. The way the P=G? handles 1harin 1haracteristics that it may have received isdefined in T" 3*.*9, J;;K.

The P8' G? returns a 1reate "ession /esponse (P8' G? ddress for the user plane- P8' G? T2&8 of theuser plane- P8' G? T2&8 of the control plane- P8' Type- P8' ddress- 2P" 0earer &dentity- 2P" 0earerEo"- Protocol 1onfiuration Options- 1harin &d- Prohibit Payload 1ompression- P' /estriction- 1ause- M"

&nfo 1hane /eportin ction ("tart) (if the P8' G? decides to receive 2$s location information durin the

session)- 1"G &nformation /eportin ction ("tart) (if the P8' G? decides to receive 2$s ser 1"Ginformation durin the session)- P8' 1harin Pause 2nabled indication (if P8' G? has chosen to enable the

function)- P'=M0/) messae to the "ervin G?. The P8' G? ta#es into account the received P8' type-the 8ual ddress 0earer 7la and the policies of operator when the P8' G? selects the P8' type to be used as

follows. &f the received P8' type is &Pv;v: and both &Pv; and &Pv: addressin is possible in the P8' but the8ual ddress 0earer 7la is not set- or only sinle &P version addressin for this P' is possible in the P8'-

the P8' G? selects a sinle &P version (either &Pv; or &Pv:). &f the received P8' type is &Pv; or &Pv:- the P8'G? uses the received P8' type if it is supported in the P8'- otherwise an appropriate error cause will be

returned. The P8' G? allocates a P8' ddress accordin to the selected P8' type. &f the P8' G? has

selected a P8' type different from the received P8' Type- the P8' G? indicates toether with the P8' type&2 a reason cause to the 2 why the P8' type has been modified- as described in clause 9.3.,.,. P8' ddressmay contain an &Pv; address for &Pv; andAor an &Pv: prefi and an &nterface &dentifier. &f the P8' has been

confiured by the operator so that the P8' addresses for the reDuested P' shall be allocated by usae of8@1Pv; only- or if the P8' G? allows the 2 to use 8@1Pv; for address allocation accordin to the ddress

llocation Preference received from the 2- the P8' ddress shall be set to +.+.+.+- indicatin that the &Pv;P8' address shall be neotiated by the 2 with 8@1Pv; after completion of the 8efault 0earer ctivation

procedure. 7or eternal P8' addressin for &Pv:- the P8' G? obtains the &Pv: prefi from the eternal P8'usin either /8&" or 8iameter client function. &n the P8' ddress field of the 1reate "ession /esponse- the

P8' G? includes the &nterface &dentifier and &Pv: prefi. The P8' G? sends /outer dvertisement to the 2

after default bearer establishment with the &Pv: prefi information for all cases.

&f the P8' address is contained in the 1reate "ession /eDuest- the P8' G? shall allocate the &Pv; address

andAor &Pv: prefi contained in the P8' address to the 2. The &P address allocation details are described inclause 9.3., on L&P ddress llocationL. The P8' G? derives the 01M based on the '/" and operator policy. The P8' G? derives whether the etended T7T filter format is to be used based on the 2T7T- 2T7T'

received from the P1/7 and operator policy. Protocol 1onfiuration Options contains the 01M- 2T7T' as wellas optional P8' parameters that the P=G? may transfer to the 2. These optional P8' parameters may be

reDuested by the 2- or may be sent unsolicited by the P=G?. Protocol 1onfiuration Options are senttransparently throuh the MM2.

?hen the @andover &ndication is present- the P8' G? does not yet send downlin# pac#ets to the "=G?I thedownlin# path is to be switched at step *3a.

&f the P8' G? is an 5=G?- it does not forward downlin# pac#ets to the "=G?. The pac#ets will only beforwarded to the @e'0 at step *+ via the direct user plane path.

,:. The "ervin G? returns a 1reate "ession /esponse (P8' Type- P8' ddress- "ervin G? address for serPlane- "ervin G? T2&8 for ",= ser Plane- "ervin G? T2&8 for control plane- 2P" 0earer &dentity- 2P"

0earer Eo"- P8' G? addresses and T2&8s (GTP=based "9A">) or G/2 #eys (PM&P=based "9A">) at the P8'

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G?(s) for uplin# traffic- Protocol 1onfiuration Options- Prohibit Payload 1ompression- P' /estriction-1ause- M" &nfo 1hane /eportin ction ("tart)- 1"G &nformation /eportin ction ("tart)- P'=M0/)

messae to the new MM2.

,<. &f an P' /estriction is received- then the MM2 shall store this value for the 0earer 1ontet and the MM2 shall

chec# this received value with the stored value for the Maimum P' /estriction to ensure there are no

conflicts between values. &f the 0earer 1ontet is accepted- the MM2 shall determine a (new) value for theMaimum P' /estriction. &f there is no previously stored value for Maimum P' /estriction- then theMaimum P' /estriction shall be set to the value of the received P' /estriction. MM2 shall not deactivate

bearer(s) with emerency /P- if present- to maintain valid P' restriction combination.

The P=G? shall inore Maimum P' restriction if the reDuest includes the 2merency P'.

&f the M" &nfo 1hane /eportin ction ("tart) andAor the 1"G &nformation /eportin ction ("tart) arereceived for this bearer contet- then the MM2 shall store this for the bearer contet and the MM2 shall report to

that P=G? via the "=G? whenever a 2$s location andAor ser 1"G information chane occurs that meets theP=G? reDuest- as described in clause ,9.,.,a of T" *3.+:+ J<K.

The MM2 determines the 2 M0/ to be used by the e'ode0 based on the subscribed 2=M0/ and theP'=M0/ for the default P'- see clause ;.<.3.

7or emerency attach the MM2 determines the 2=M0/ to be used by the e'ode0 from the P' M0/received from the "=G?.

&f new MM2 hasn$t receivedfrom "tep ,*- Boice "upport Match &ndicator for the 2 from the e'0 then- basedon implementation- the MM2 may set &M" Boice over P" session supported &ndication and update it at a later

stae.

The new MM2 sends an ttach ccept (P'- GT&- P8' Type- P8' ddress- T& 5ist- 2P" 0earer &dentity-

"ession Manaement /eDuest- Protocol 1onfiuration Options- '" seDuence number- '"=M1- &M" Boiceover P" session supported &ndication- 2merency "ervice "upport indicator- 51" "upport &ndication) messae to

the e'ode0. GT& is included if the new MM2 allocates a new GT&. This messae is contained in an

",MM2 control messae &nitial 1ontet "etup /eDuest. This ", control messae also includes the " securitycontet information for the 2- the @andover /estriction 5ist- the 2P" 0earer Eo"- the 2=M0/- 2P" 0earer

&dentity- as well as the T2&8 at the "ervin G? used for user plane and the address of the "ervin G? for user

plane. &n addition- if the P8' connection is established for 5ocal &P ccess- the correspondin ", controlmessae includes a 1orrelation &8 for enablin the direct user plane path between the @e'0 and the 5=G?. &f

the P8' connection is established for "&PTO at the 5ocal 'etwor# with 5=G? function collocated with the(@)e'0- the correspondin ", control messae includes a "&PTO 1orrelation &8 for enablin the direct user

plane path between the (@)e'0 and the 5=G?.

'OT2 ,*H&n this release of the 3GPP specification the 1orrelation &8 and "&PTO 1orrelation &8 is set eDual to the

user plane P8' G? T2&8 (GTP=based "9) or G/2 #ey (PM&P=based "9) that the MM2 has received instep ,:.

&n the ttach ccept messae- the MM2 does not include the &Pv: prefi within the P8' ddress. The MM2

includes the 2P" 0earer Eo" parameter E1& and P'=M0/ into the "ession Manaement /eDuest.

7urthermore- if the 2 has T/' or G2/' capabilities and the networ# supports mobility to T/' orG2/'- the MM2 uses the 2P" bearer Eo" information to derive the correspondin P8P contet parameters

Eo" 'eotiated (/CC Eo" profile)- /adio Priority- Pac#et 7low &d and T& and includes them in the "essionManaement /eDuest. &f the 2 indicated in the 2 'etwor# 1apability it does not support 0"" pac#et flow

procedures- then the MM2 shall not include the Pac#et 7low &d. @andover /estriction 5ist is described inclause ;.3.9.< LMobility /estrictionsL. The MM2 sets the &M" Boice over P" session supported &ndication as

described in clause ;.3.9.>. 51" "upport &ndication indicates whether the networ# supports the 2P1=MO=5/andAor 1"=MO=5/ as described in T" *3.*<, J9<K.

&f the 2 initiates the ttach procedure at a hybrid cell- the MM2 shall chec# whether the 1"G &8 is containedin the 1"G subscription and is not epired. The MM2 shall send an indication whether the 2 is a 1"G member

to the /' alon with the ",=MM2 control messae. 0ased on this information the /' may performdifferentiated treatment for 1"G and non=1"G members.

&f the MM2 or P8' G? has chaned the P8' Type- an appropriate reason cause shall be returned to the 2 as

described in clause 9.3.,.,.

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7or an emerency attached 2- i.e. for 2s that have only emerency 2P" bearers established- there is no "security contet information included in the ", control messaes and there is no '" level security when the

2 cannot be authenticated. The 2merency "ervice "upport indicator informs the 2 that 2merency bearerservices are supported- i.e. the 2 is allowed to reDuest P8' connectivity for emerency services.

,>. The e'ode0 sends the //1 1onnection /econfiuration messae includin the 2P" /adio 0earer &dentity to

the 2- and the ttach ccept messae will be sent alon to the 2. The 2 shall store the Eo" 'eotiated-/adio Priority- Pac#et 7low &d and T&- which it received in the "ession Manaement /eDuest- for use whenaccessin via G2/' or T/'. The P' is provided to the 2 to notify it of the P' for which the

activated default bearer is associated. 7or further details- see T" 3:.33, J3<K. The 2 may provide 2P" 0earerEo" parameters to the application handlin the traffic flow(s). The application usae of the 2P" 0earer Eo" is

implementation dependent. The 2 shall not reject the //1 1onnection /econfiuration on the basis of the 2P"

0earer Eo" parameters contained in the "ession Manaement /eDuest.

&f the attach procedure is initiated by manual 1"G selection and occurs via a 1"G cell- the 2 upon receivinthe ttach accept shall chec# if the 1"G &8 and associated P5M' of the cell where the 2 has sent the ttach

/eDuest messae is contained in its llowed 1"G list. &f the 1"G &8 and associated P5M' is not in the 2$sllowed 1"G list- the 2 shall add the 1"G &8 and associated P5M' to its llowed 1"G list. Manual 1"G

selection is not supported when an emerency service has been initiated.

'OT2 ,3H&f the 2 receives an ttach ccept messae via a hybrid cell- the 2 does not add the correspondin1"G &8 and associated P5M' to its llowed 1"G list. ddin a 1"G &8 and associated P5M' to the2$s local llowed 1"G list for a hybrid cell is performed only by OT or OM 8M procedures.

?hen receivin the ttach ccept messae the 2 shall set its T&' to LGT&L as no &"/ ctivated is indicated.

&f the 2 receives an &Pv; address set to +.+.+.+- it may neotiate the &Pv; address with 8@1Pv; as specified in

T" *C.+:, J3>K. &f the 2 receives an &Pv: interface identifier- it may wait for the /outer dvertisement fromthe networ# with the &Pv: prefi information or it may send a /outer "olicitation if necessary.

'OT2 ,;HThe &P address allocation details are described in clause 9.3., on L&P ddress llocationL.

,C. The 2 sends the //1 1onnection /econfiuration 1omplete messae to the e'ode0. 7or further details- seeT" 3:.33, J3<K.

*+. The e'ode0 sends the &nitial 1ontet /esponse messae to the new MM2. This &nitial 1ontet /esponse

messae includes the T2&8 of the e'ode0 and the address of the e'ode0 used for downlin# traffic on the ",reference point.

The MM2 shall be prepared to receive this messae either before or after the ttach 1omplete messae (sent instep **).

&f the 1orrelation &8 or "&PTO 1orrelation &8 was included in the &nitial 1ontet "etup /eDuest messae- the

e'ode0 shall use the included information to establish direct user plane path with the 5=G? and forward uplin#

data for 5ocal &P ccess or "&PTO at the 5ocal 'etwor# with 5=G? function collocated with the (@)e'0accordinly.

*,. The 2 sends a 8irect Transfer messae to the e'ode0- which includes the ttach 1omplete (2P" 0earer&dentity- '" seDuence number- '"=M1) messae.

**. The e'ode0 forwards the ttach 1omplete messae to the new MM2 in an plin# '" Transport messae.

fter the ttach ccept messae and once the 2 has obtained a P8' ddress- the 2 can then send uplin# pac#ets towards the e'ode0 which will then be tunnelled to the "ervin G? and P8' G?. &f the 2 reDuested

for a dual address P8' type (&Pv;v:) to a iven P' and was ranted a sinle address P8' type (&Pv; or &Pv:)

by the networ# with a reason cause indicatin that only sinle &P version per P8' connection is allowed senttoether with the P8' type- the 2 should reDuest for the activation of a parallel P8' connection to the same

P' with a sinle address P8' type (&Pv; or &Pv:) other than the one already activated. &f the 2 receives noreason cause in step ,> in response to an &Pv;v: P8' type and it receives an &Pv: &nterface &dentifier apart from

the &Pv; address or +.+.+.+ in the P8' ddress field- it considers that the reDuest for a dual address P8' wassuccessful. &t can wait for the /outer dvertisement from the networ# with the &Pv: prefi information or it may

send /outer "olicitation if necessary.

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*3. pon reception of both- the &nitial 1ontet /esponse messae in step *+ and the ttach 1omplete messae instep **- the new MM2 sends a Modify 0earer /eDuest (2P" 0earer &dentity- e'ode0 address- e'ode0 T2&8-

@andover &ndication) messae to the "ervin G?.

*3a. &f the @andover &ndication is included in step *3- the "ervin G? sends a Modify 0earer /eDuest (@andover

&ndication) messae to the P8' G? to prompt the P8' G? to tunnel pac#ets from non 3GPP &P access to

3GPP access system and immediately start routin pac#ets to the "ervin G? for the default and any dedicated2P" bearers established.

*3b. The P8' G? ac#nowledes by sendin Modify 0earer /esponse to the "ervin G?.

*;. The "ervin G? ac#nowledes by sendin Modify 0earer /esponse (2P" 0earer &dentity) messae to the newMM2. The "ervin G? can then send its buffered downlin# pac#ets.

*9. fter the MM2 receives Modify 0earer /esponse (2P" 0earer &dentity) messae- if /eDuest Type does notindicate handover and an 2P" bearer was established and the subscription data indicates that the user is allowed

to perform handover to non=3GPP accesses- and if the MM2 selected a P8' G? that is different from the P8'G? identity which was indicated by the @"" in the P8' subscription contet- the MM2 shall send a 'otify

/eDuest includin the P' and P8' G? identity to the @"" for mobility with non=3GPP accesses. Themessae shall include information that identifies the P5M' in which the P8' G? is located.

&f the M2 identity of the 2 has chaned and step > has not been performed- the MM2 sends a 'otify /eDuest(M2 &dentity) messae to inform the @"" of the updated M2 identity.

7or an 2merency ttach the MM2 shall not send any 'otify /eDuest to an @"".

fter step >- and in parallel to any of the precedin steps- the MM2 shall send a 'otify /eDuest (@omoeneous

"upport of &M" Boice over P" "essions) messae to the @""H

= &f the MM2 has evaluated the support of &M" Boice over P" "essions- see clause ;.3.9.>- and

= &f the MM2 determines that it needs to update the @omoeneous "upport of &M" Boice over P" "essions-see clause ;.3.9.>.

*:. The @"" stores the P' and P8' G? identity pair and sends a 'otify /esponse to the MM2.

'OT2 ,9H7or handover from non=3GPP access- the P8' G? initiates resource allocation deactivation procedure in

the trustedAuntrusted non=3GPP &P access as specified in T" *3.;+* J*K.

!.3.2.2 UTR&*GER&* :'itia$ &ttach

?hen a 2 attaches to T/'AG2/'- it eecutes the normal attach procedure as defined in T" *3.+:+ J<K. ?hen

the 2 needs an &P address- it initiates P8P contet activation procedure as defined in T" *3.+:+ J<K.

This procedure alon with P8P contet activation is also used to establish the first P8' connection over

T/'AG2/' when the 2 already has active P8' connections over a non=3GPP access networ# and wants toestablish simultaneous P8' connections to different P's over multiple accesses.

!.3.3 TracBi'g &rea U%#ate %r"ce#ures

!.3.3.0 Triggers "r tracBi'g area u%#ate

stand=alone trac#in area update (with or without "=G? chane- described in clauses 9.3.3., and 9.3.3.* respectively)occurs when a GP/"=attached or 2=T/'=attached 2 eperiences any of the followin conditionsH

= 2 detects it has entered a new T that is not in the list of T&s that the 2 reistered with the networ# (eceptfor the case of a 2 confiured to perform ttach with &M"& when enterin a T in a new non=eDuivalent

P5M' in //1=&852 mode)I

= the periodic T update timer has epiredI

= 2 was in T/' PMM1onnected state (e.. /P1@) when it reselects to 2=T/'I

= 2 was in GP/" /28 state when it reselects to 2=T/'I

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= the T&' indicates LP=TM"&L when the 2 reselects to 2=T/' (e.. due to bearer confiuration modifications performed on G2/'AT/')I

= the //1 connection was released with release cause Lload re=balancin T reDuiredLI

= the //1 layer in the 2 informs the 2$s '" layer that an //1 connection failure (in either 2=T/' or

T/') has occurredI

= a chane of the 2 'etwor# 1apability andAor M" 'etwor# 1apability andAor 2 "pecific 8/F Parameters

andAor T" *;.++> J;<K M" /adio ccess capability (e.. due to G2/' radio capability chane or 18M *+++/adio ccess Technoloy 1apability chane) information of the 2.

= for a 2 supportin 1" fallbac#- or confiured to support &M" voice- or both- a chane of the 2$s usae settinor voice domain preference for 2=T/'.

= for a "/=B11 capable 2- a chane of M" 1lassmar# * andAor M" 1lassmar# 3 andAor "upported 1odecs.

= 2 manually selects a 1"G cell whose 1"G &8 and associated P5M' is absent from both the 2$s llowed

1"G list and the 2$s Operator 1"G list.

= 2 receives a pain reDuest from the MM2 while the Mobility Manaement bac# off timer is runnin and the

2$s T&' indicates LP=TM"&L.

'OT2 ,H The complete list of T triers is specified in T" *;.3+, J;:K.

The procedure is initiated by an 2 in either 21M=&852 state or 21M=1O''21T28 state. The decision to perform

"=G? chane durin the trac#in area update procedure is made by the MM2 independently from the triers above.

&f "&PTO is allowed for the P' associated with a P8' connection- the MM2 should re=evaluate whether the PG?location is still acceptable. &f the MM2 determines that PG? re=location is needed- the MM2 may initiate P8'

deactivation with reactivation reDuested accordin to clause 9.,+.3 at the end of the trac#in areaAroutin area update procedure.

'OT2 *. &t depends on the operator$s confiuration in the MM2 whether to use the deactivation with reactivation

reDuest or allow the continued usae of the already connected G?.

&f "&PTO at the local networ# is allowed for the P' associated with a P8' connection the MM2 handles the "&PTO at

the 5ocal 'etwor# P8' connection as follows.

7or a 5=G? collocated with (@)e'0H

= 7or intra=MM2 mobility- upon completion of the T procedure the MM2 shall deactivate the "&PTO at the

local 'etwor# P8' connection with the Lreactivation reDuestedL cause value accordin to clause 9.,+.3. &f the2 has no other P8' connection- the MM2 initiates Leplicit detach with reattach reDuiredL procedure

accordin to clause 9.3.>.3.

= 7or &nter=MM2A"G"' mobility- as part of the Trac#in rea pdate procedure- the source MM2 shall remove

the bearer(s) correspondin to the "&PTO at 5ocal 'etwor# P8' connection and shall release the core networ#

resources associated to the "&PTO at the 5ocal 'etwor# P8' connection by performin the MM2=initiated P8'1onnection 8eactivation before sendin the 1ontet /esponse messae.

7or a stand=alone G?H

= 7or intra=MM2 mobility- upon completion of the T procedure the MM2 chec#s that the 5ocal @ome 'etwor# &8 has chaned and decides whether to deactivate the "&PTO at the local 'etwor# P8' connection

with the Lreactivation reDuestedL cause value accordin to clause 9.,+.3. &f the 2 has no other P8' connection-the MM2 initiates Leplicit detach with reattach reDuiredL procedure accordin to clause 9.3.>.3.

= 7or &nter=MM2A"G"' mobility- upon completion of the TA/ procedure the new MM2A"G"' chec#s thatthe 5ocal @ome 'etwor# &8 has chaned and decides whether to deactivate the "&PTO at the 5ocal 'etwor#

P8' connection with the Lreactivation reDuestedL cause value accordin to clause 9.,+.3. &f the 2 has no otherP8' connection- the MM2 initiates Leplicit detach with reattach reDuiredL procedure accordin to

clause 9.3.>.3.

&f 5&P is active for a P8' connection of the 2- the source MM2 (or ";="G"') shall not include 5&P bearer(s) in

the 2P" bearer 1ontet durin Trac#in rea pdate procedure and shall release the core networ# resources of this

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5&P P8' connection by peformin the MM2 reDuested P8' disconnection procedure accordin to steps * to : ofclause 9.,+.3 before it responds with the 1ontet /esponse messae in the case of inter=MM2A"G"' mobility or after it

receives Trac#in rea pdate /eDuest in the case of intra=MM2 mobility.

'OT2 3H The source MM2 may not be able to release the 5&P P8' connection after the 1ontet /esponse is sent

as when there is no "=G? relocation- the "=G? will assin the ",, control tunnel of the 2 to the new

MM2 after the new MM2 updates the contet information.

8urin the Trac#in rea pdate procedure- if the MM2 supports "/B11 and if the 2 "/B11 capability has

chaned- the MM2 informs the @"" with the 2 "/B11 capability e.. for further &M" reistration.

The cell selection for T/' is described in T" *9.3+; J,*K and T" *9.33, J33K.

!.3.3.0& Pr"5isi"' " UE9s T&: t" MME i' E+M-+8**E+TE state

The e'ode0 shall include the T&S21G& of the current cell in every ",=P P5&'% '" T/'"PO/T messae.

'OT2H n e'ode0 can contain cells from more than one Trac#in rea and intra=e'ode0 cell chanes are notnormally notified to the MM2. @owever- the MM2 needs to #now the 2$s current T& in order to

correctly produce a T accept messae.

!.3.3.1 TracBi'g &rea U%#ate %r"ce#ure ith Ser5i'g GA cha'ge

7SS

a. P+E :'itiate# :P-+&*

Sessi"' M"#iicati"'

. M"#i; Cearer ReDuest

(A) 11. +reate Sessi"' Res%"'se

1. U%#ate L"cati"' &cB 1<. e$ete Sessi"' ReDuest


4. +"'te/t ReDuest 2. T&U ReDuest

'e MME "$# MME "$# S4 SGS*

'e Ser5i'gGA P* GA

!. +"'te/t Res%"'se . &uthe'ticati"' Securit;

12. U%#ate L"cati"' 13. +a'ce$ L"cati"' 14. +a'ce$ L"cati"' &cB

20. T&U &cce%t 21. T&U +"6%$ete

. +" 'te/t &cB'"$e#ge

"$# Ser5i'gGA

3. T&U ReDuest

e*"#eC UE

<. +reate Sessi"' ReDuest


(>)

1. Trigger t" startT&U %r"ce#ure

R*+

1!. :u Re$ease +"66a'# 1. :u Re$ease +"6%$ete

P+R

0i1ure +'3'3'%$%2 Trackin1 Area !pdate procedure #ith Servin1 GB chan1e

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "teps C and ,+concern GTP based "9A">.

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'OT2 *H &n case of Trac#in rea pdate without MM2 chane the sinallin in steps ;- 9- < and steps ,*=,< ares#ipped.

,. One of the triers described in clause 9.3.3.+ for startin the T procedure occurs.

*. The 2 initiates the T procedure by sendin- to the e'ode0- a T /eDuest (2 1ore 'etwor# 1apability-

M" 'etwor# 1apability- old GT&- Old GT& type- last visited T&- active fla- 2P" bearer status- P=TM"&

"inature- additional GT&- e%"&- '" seDuence number- '"=M1- %"&- Boice domain preference and 2$susae settin) messae toether with //1 parameters indicatin the "elected 'etwor# and the old GMM2&.

n eception is that- if the T was triered for load re=balancin purposes (see clause ;.3.<.3)- the old

GMM2& is not included in the //1 parameters. The 2 shall set the Old GT& Type to indicate whether theOld GT& is a native GT& or is mapped from a P=TM"& and /&.

&f the 2$s T&' indicates LGT&L or L/T=related TM"&L and the 2 holds a valid GT& then the old GT&indicates this valid GT&. &f the 2$s T&' indicates LP=TM"&L and the 2 holds a valid P=TM"& and related /&

then these two elements are indicated as the old GT&. Mappin a P=TM"& and /& to a GT& is specified innne @. ?hen the 2 is in connected mode (e.. in /P1@) when it reselects to 2=T/'- the 2 shall

set its T&' to LP=TM"&L.

&f the 2 holds a valid GT& and the old GT& indicates a GT& mapped from a P=TM"& and /&- then the 2

indicates the GT& as additional GT&. &f the old GT& indicates a GT& mapped from a P=TM"& and /&- andthe 2 has a valid P=TM"& sinature- the P=TM"& sinature shall be included.

The additional GT& in the Trac#in rea pdate /eDuest messae allows the new MM2 to find any alreadyeistin 2 contet stored in the new MM2 when the old GT& indicates a value mapped from a P=TM"& and

/&.

The //1 parameter Lold GMM2&L ta#es its value from the identifier that is sinalled as the old GT&

accordin to the rules above. 7or a combined MM2A"G"' the e'ode0 is confiured to route the MM2=code(s)of this combined node to the same combined node. This e'ode0 is also confiured to route MM2=code(s) of

GT&s that are enerated by the 2$s mappin of the P=TM"&s allocated by the combined node. "uch ane'ode0 confiuration may also be used for separate nodes to avoid chanin nodes in the pool caused by inter

/T mobility.

The last visited T& shall be included in order to help the MM2 produce a ood list of T&s for any subseDuent

T ccept messae. "elected 'etwor# indicates the networ# that is selected. ctive fla is a reDuest by 2 toactivate the radio and ", bearers for all the active 2P" 0earers by the T procedure when the 2 is in 21M=

&852 state. The 2P" bearer status indicates each 2P" bearer that is active in the 2. The T /eDuest messaeshall be interity protected by the '"=M1 as described in T" 33.;+, J;,K. e%"&- '" seDuence number and

'"=M1 are included if the 2 has valid 2P" security parameters. '" seDuence number indicates theseDuential number of the '" messae. %"& is included if the 2 indicates a GT& mapped from a P=TM"& in

the information element Lold GT&L.

The 2 sets the voice domain preference and 2$s usae settin accordin to its confiuration- as described in

clause ;.3.9.C.

3. The e'ode0 derives the MM2 from the //1 parameters carryin the old GMM2& and the indicated "elected

'etwor#. &f that MM2 is not associated with that e'ode0 or the GMM2& is not available or the 2 indicatesthat the T procedure was triered by load re=balancin- the e'ode0 selects an MM2 as described in clause

;.3.>.3 on LMM2 "election 7unctionL.

The e'ode0 forwards the T /eDuest messae toether with the 1"G access mode- 1"G &8- T&S21G& of

the cell from where it received the messae and with the "elected 'etwor# to the new MM2. 1"G &8 is provided by /' if the 2 sends the T /eDuest messae via a 1"G cell or a hybrid cell. 1"G access mode

is provided if the 2 sends the T /eDuest messae via a hybrid cell. &f the 1"G access mode is not provided but the 1"G &8 is provided- the MM2 shall consider the cell as a 1"G cell. 7or "&PTO at the 5ocal 'etwor#

with stand=alone G? architecture the e'ode0 includes the 5ocal @ome 'etwor# &8 in the &nitial 2 Messaeand in plin# '" Transport messae if the taret cell is in a 5ocal @ome 'etwor#.

;. The new MM2 differentiates the type of the old node- i.e. MM2 or "G"'- as specified in clause ;.3.,C- uses the

GT& received from the 2 to derive the old MM2A"; "G"' address- and sends a 1ontet /eDuest (old GT&-complete T /eDuest messae- P=TM"& "inature- MM2 ddress- 2 validated) messae to the old MM2Aold

"; "G"' to retrieve user information. 2 Balidated indicates that the new MM2 has validated the interity

protection of the T messae- e.. based on native 2P" security contet for the 2. To validate the 1ontet

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/eDuest the old MM2 uses the complete T /eDuest messae and the old "; "G"' uses the P=TM"&"inature and responds with an appropriate error if interity chec# fails in old MM2A"; "G"'. This shall

initiate the security functions in the new MM2. &f the security functions authenticate the 2 correctly- the newMM2 shall send a 1ontet /eDuest (&M"&- complete T /eDuest messae- MM2 ddress- 2 Balidated)

messae to the old MM2A"; "G"' with the 2 Balidated set. &f the new MM2 indicates that it hasauthenticated the 2 or if the old MM2Aold "; "G"' correctly validates the 2- then the old MM2Aold

"; "G"' starts a timer.

&f the 2 with emerency bearers is not authenticated in the old MM2Aold "; "G"' (in a networ# supportin

unauthenticated 2s) the old MM2Aold "; "G"' continues the procedure with sendin a 1ontet /esponse andstartin the timer also when it cannot validate the 1ontet /eDuest.

9. &f the 1ontet /eDuest is sent to an old MM2 the old MM2 responds with a 1ontet /esponse (&M"&- M2&dentity (&M2&"B)- MM 1ontet- 2P" 0earer 1ontet(s)- "ervin G? sinallin ddress and T2&8(s)- &"/

"upported- M" &nfo 1hane /eportin ction (if available)- 1"G &nformation /eportin ction (if available)-2 Time None- 2 1ore 'etwor# 1apability- 2 "pecific 8/F Parameters) messae.

&f the 1ontet /eDuest is sent to an old "; "G"' the old "; "G"' responds with a 1ontet /esponse (MM1ontet- 2P" 0earer 1ontet(s)- "ervin G? sinallin ddress and T2&8(s)- &"/ "upported- M" &nfo 1hane

/eportin ction (if available)- 1"G &nformation /eportin ction (if available)- 2 Time None- 2 1ore

'etwor# 1apability- 2 "pecific 8/F Parameters).

The MM 1ontet contains security related information as well as other parameters (includin &M"& and M2

&dentity (if available)) as described in clause 9.<.* (&nformation "torae for MM2). The unused uthentication

Euintets in the MM 1ontet are also maintained in the "G"'. T" 33.;+, J;,K ives further details on thetransfer of security related information.

&f the MM 1ontet received with the 1ontet /esponse messae did not include &M2&"B and the MM2 does notalready store the &M2&"B of the 2- the MM2 shall retrieve the M2 &dentity (&M2&"B) from the 2.

The P8' G? ddress and T2&8(s) (for GTP=based "9A">) or G/2 %eys (PM&P=based "9A"> at the P8'G?(s) for uplin# traffic) and the T&(s)- is part of the 2P" 0earer 1ontet. &f the 2 is not #nown in the old

MM2Aold "; "G"' or if the interity chec# for the T /eDuest messae fails- the old MM2Aold "; "G"'

responds with an appropriate error cause. &"/ "upported is indicated if the old MM2Aold "; "G"' andassociated "ervin G? are capable to activate &"/ for the 2.

&f the 2 receives emerency bearer services from the old MM2Aold "; "G"' and the 2 is &11less- &M"&

can not be included in the 1ontet /esponse. 7or emerency attached 2s- if the &M"& cannot be authenticated-then the &M"& shall be mar#ed as unauthenticated. lso- in this case- security parameters are included only if

available.

&f "&PTO at the 5ocal 'etwor# is active for a P8' connection in the architecture with stand=alone G?- the old

MM2Aold "; "G"' shall include the 5ocal @ome 'etwor# &8 of the old cell in the 2P" 0earer contetcorrespondin to the "&PTO at the 5ocal 'etwor# P8' connection.

:. &f the interity chec# of T /eDuest messae (sent in step *) failed- then authentication is mandatory. The

authentication functions are defined in clause 9.3.,+ on L"ecurity 7unctionL. 1ipherin procedures are described

in clause 9.3.,+ on L"ecurity 7unctionL. &f GT& allocation is oin to be done and the networ# supportscipherin- the '" messaes shall be ciphered.

&f this T reDuest is received for a 2 which is already in 21M1O''21T28 state and the P5M'=&8 of theT& sent by the e'ode0 in "tep 3 is different from that of the GT&- included in the T /eDuest messae- the

MM2 shall delay authenticatin the 2 until after "tep *, (T 1omplete messae).

'OT2 3H The MM2 delays the authentication such that the 2 first updates its reistered P5M'=&8 to the new

P5M'=&8 selected by the /' durin handover. The new P5M'=&8 is provided by the MM2 to the 2as part of the GT& in the T accept messae in "tep *+. 8oin this ensures that the same P5M'=&8 is

used in the derivation of the %asme #ey by both the networ# and the 2.

&f the new MM2 is confiured to allow emerency bearer services for unauthenticated 2 the new MM2 behave

as followsH

= where a 2 has only emerency bearer services- the MM2 either s#ip the authentication and security

procedure or accepts that the authentication may fail and continues the Trac#in rea pdate procedureI or

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= where a 2 has both emerency and non emerency bearer services and authentication fails- the MM2continues the Trac#in rea pdate procedure and deactivates all the non=emerency P8' connections as

specified in clause 9.,+.3.

<. The MM2 (if the MM2 has chaned then it is the new MM2) determines to relocate the "ervin G?. The

"ervin G? is relocated when the old "ervin G? cannot continue to serve the 2. The MM2 (if the MM2 has

chaned then it is the new MM2) may also decide to relocate the "ervin G? if a new "ervin G? is epectedto serve the 2 loner andAor with a more optimal 2 to P8' G? path- or if a new "ervin G? can be co=located with the P8' G?. "election of a new "ervin G? is performed accordin to clause ;.3.>.* on L"ervin

G? selection functionL.

&f the MM2 has chaned the new MM2 sends a 1ontet c#nowlede ("ervin G? chane indication) messae

to the old MM2Aold "; "G"'. "ervin G? chane indication indicates a new "ervin G? has been selected.The old MM2Aold "; "G"' mar#s in its 2 contet that the information in the G?s is invalid. nd- if the old

node is an MM2- the old MM2 mar#s in its 2 contet that the information in the @"" is invalid. This ensuresthat the old MM2Aold "; "G"' updates the G?s- and the old MM2 updates the @""- if the 2 initiates a T

or / procedure bac# to the old MM2Aold "; "G"' before completin the onoin T procedure.

'OT2 ;H pdatin the G?s refers to deletion of session(s) on the "ervin G? followed by re=creation of

session(s) on the "ervin G?. The re=creation of session(s) on the "ervin G? will result in successful

re=establishment of the "9A"> tunnel between the selected "ervin G? and the P8' G?.

&f the security functions do not authenticate the 2 correctly- then the T shall be rejected- and the new MM2

shall send a reject indication to the old MM2Aold "; "G"'. The old MM2Aold "; "G"' shall continue as if the

&dentification and 1ontet /eDuest was never received.

&"/ is not indicated in the 1ontet c#nowlede as &"/ is not activated due to the "=G? chane.

>. &f the MM2 has chaned the new MM2 verifies the 2P" bearer status received from the 2 with the bearercontets received from the old MM2Aold "; "G"'. &f the MM2 has not chaned the MM2 verifies 2P" bearer

status from the 2 with the bearer contets available in the MM contet. The MM2 releases any networ#resources related to 2P" bearers that are not active in the 2. &f there is no bearer contet at all- the MM2 rejects

the T /eDuest.

&f the MM2 selected a new "ervin G? it sends a 1reate "ession /eDuest (&M"&- bearer contets- MM2

ddress and T2&8- Type- the Protocol Type over "9A">- /T type- "ervin 'etwor#- 2 Time None) messae per P8' connection to the selected new "ervin G?. The P8' G? address and T7T (for PM&P=based "9A">)

are indicated in the bearer 1ontets. Type indicates to the "ervin G? to send the Modify 0earer /eDuest to theP8' G?. The Protocol Type over "9A"> is provided to "ervin G? which protocol should be used over "9A">

interface. /T type indicates a chane in radio access. &f the P8' G? reDuested 2$s location andAor ser 1"Ginformation- the MM2 also includes the ser 5ocation &nformation &2 andAor ser 1"G &nformation &2 in this

messae.

'OT2 9H The ser 1"G &nformation &2 is only sent in step > if the Lctive flaL is set in the T /eDuest

messae.

C. The "ervin G? informs the P8' G?(s) about the chane of for eample the /T type that e.. can be used

for charin- by sendin the messae Modify 0earer /eDuest ("ervin G? ddress and T2&8- /T type-"ervin 'etwor#- P8' 1harin Pause "upport &ndication) per P8' connection to the P8' G?(s) concerned.

ser 5ocation &nformation &2 andAor 2 Time None &2 andAor ser 1"G &nformation &2 are also included ifthey are present in step >.

Ca &f dynamic P11 is deployed- and /T type information needs to be conveyed from the P8' G? to the P1/7-then the P8' G? shall send /T type information to the P1/7 by means of an &P=1' "ession Modification

procedure as defined in T" *3.*+3 J:K.

'OT2 :H The P8' G? does not need to wait for the P1/7 response- but continues in the net step. &f the P1/7

response leads to an 2P" bearer modification the P8' G? should initiate a bearer update procedure.

,+. The P8' G? updates its bearer contets and returns a Modify 0earer /esponse (M"&"8'- 1harin &d- P8'

1harin Pause 2nabled &ndication (if P8' G? has chosen to enable the function)) messae. The M"&"8' isincluded if the P8' G? has it stored in its 2 contet.

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&f the "ervin G? is relocated- the P8' G? shall send one or more Lend mar#erL pac#ets on the old pathimmediately after switchin the path in order to assist the reorderin function in the taret e'ode0. &f the

"ervin G? has no downlin# user plane established- the "ervin G? shall discard the Lend mar#erL receivedfrom the P8' G? and shall not send 8ownlin# 8ata 'otification. Otherwise the "ervin G? shall forward the

Lend mar#erL pac#ets to the source e'ode0 or source "; "G"'.

,,. The "ervin G? updates its bearer contet. This allows the "ervin G? to route bearer P8s to the P8' G?when received from e'ode0.

The "ervin G? returns a 1reate "ession /esponse ("ervin G? address and T2&8 for user plane and control

plane and P8' G? T2&8s (for GTP=based "9A">) or G/2 #eys (for PM&P=based "9A">) for uplin# traffic andcontrol plane) messae to the new MM2.

,*. The new MM2 verifies whether it holds subscription data for the 2 identified by the GT&- the additionalGT& or by the &M"& received with the contet data from the old 1' node.

&f there are no subscription data in the new MM2 for this 2- or for some networ# sharin scenario (e..G?1') if the P5M'=&8 of the T& supplied by the e'ode0 is different from that of the GT& in the 2$s

contet- then the new MM2 sends an pdate 5ocation /eDuest (MM2 &dentity- &M"&- 5/=7las- MM21apabilities- @omoeneous "upport of &M" Boice over P" "essions- 2 "/B11 capability- eDuivalent P5M'

list- M2 &dentity (&M2&"B)) messae to the @"". 5/=7las indicates that update location is sent from an MM2and the MM2 reistration shall be updated in @"". The @"" does not cancel any "G"' reistration. The MM2capabilities indicate the MM2$s support for reional access restrictions functionality. The inclusion of the

eDuivalent P5M' list indicates that the MM2 supports the inter=P5M' handover to a 1"G cell in an eDuivalent

P5M' usin the subscription information of the taret P5M'. The L@omoenous "upport of &M" Boice overP" "essionsL indication (see clause ;.3.9.>) shall not be included unless the MM2 has completed its evaluation

of the support of L&M" Boice over P" "essionL as specified in clause ;.3.9.>. The M2 &dentity is included ifstep 9 caused the MM2 to retrieve the &M2&"B from the 2.

'OT2 <H t this step- the MM2 may not have all the information needed to determine the settin of the &M" Boiceover P" "ession "upported indication for this 2 (see clause ;.3.9.>). @ence the MM2 can send the

L@omoenous "upport of &M" Boice over P" "essionsL later on in this procedure.

&f the 2 initiates the T procedure in a BP5M' supportin utonomous 1"G /oamin and the @P5M' hasenabled utonomous 1"G /oamin in the BP5M' (via "ervice 5evel reement) and the MM2 needs to

retrieve the 1"G subscription information of the 2 from the 1""- the MM2 initiates the pdate 1"G 5ocationProcedure with 1"" as described in clause 9.3.,*.

&f the MM2 determines that only the 2 "/B11 capability has chaned- the MM2 sends a 'otify /eDuest to

the @"" to inform about the chaned 2 "/B11 capability.

&f all the 2P" bearers of the 2 have emerency /P value- the new MM2 may s#ip the update location

procedure or proceed even if the update location fails.

,3. The @"" sends the messae 1ancel 5ocation (&M"&- 1ancellation Type) to the old MM2 with 1ancellation Type

set to pdate Procedure.

,;. &f the timer started in step ; is not runnin- the old MM2 removes the MM contet. Otherwise- the contets areremoved when the timer epires. &t also ensures that the MM contet is #ept in the old MM2 for the case the 2initiates another T procedure before completin the onoin T procedure to the new MM2. The old MM2

ac#nowledes with the messae 1ancel 5ocation c# (&M"&).

,9. ?hen old "; "G"' receives the 1ontet c#nowlede messae and if the 2 is in &u 1onnected- the old

"; "G"' sends an &u /elease 1ommand messae to the /'1 after the timer started in step ; has epired.

,:. The /'1 responds with an &u /elease 1omplete messae.

,<. The @"" ac#nowledes the pdate 5ocation /eDuest messae by sendin an pdate 5ocation c# (&M"&-"ubscription 8ata) messae to the new MM2. The "ubscription 8ata may contain the 1"G subscription data for

the reistered P5M' and for the eDuivalent P5M' list reDuested by MM2 in step ,*.

&f the pdate 5ocation is rejected by the @""- the new MM2 rejects the T /eDuest from the 2 with anappropriate cause. &n such cases- the new MM2 releases any local MM2 2P" 0earer contets for this particular2- and additionally deletes the 2P" bearer resources in the new "ervin G? by sendin the 8elete "ession

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/eDuest (1ause- Operation &ndication) messaes to the new "ervin G?. The Operation &ndication fla shall not be set. Therefore- the new "ervin G? receivin this reDuest shall not initiate a delete procedure towards the

P8' G?.

&f the 2 initiates the T procedure at a 1"G cell- the new MM2 shall chec# whether the 1"G &8 and

associated P5M' is contained in the 1"G subscription and is not epired. &f the 1"G &8 and associated P5M'

is not present or epired- the MM2 shall send a Trac#in rea pdate reject messae to the 2 with anappropriate cause value. The 2 shall remove the 1"G &8 and associated P5M' from its llowed 1"G list if present. &f the 2 has onoin emerency bearer services no 1"G access control shall be performed.

&f all chec#s are successful then the new MM2 constructs a contet for the 2.

,>. &f the MM2 has chaned- when the timer started in step ; epires the old MM2Aold "; "G"' releases any local

MM2 or "G"' bearer resources and additionally the old MM2Aold "; "G"' deletes the 2P" bearer resources by sendin the 8elete "ession /eDuest (1ause- Operation &ndication) messaesto the old "ervin G? if it

received the "ervin G? chane indication in the 1ontet c#nowlede messae in step <. ?hen the Operation&ndication fla is not set- that indicates to the old "ervin G? that the old "ervin G? shall not initiate a delete

procedure towards the P8' G?. &f &"/ is activated the 1ause indicates to the old "=G? that the old "=G? shalldelete the bearer resources on the other old 1' node by sendin 8elete 0earer /eDuest messae(s) to that 1'

node.

&f the MM2 has not chaned- step ,, triers the release of the 2P" bearer resources at the old "ervin G?.

,C. The "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messaes. The "ervin G? discards any pac#ets buffered for the 2.

*+. &f due to reional subscription restrictions or access restrictions (e.. 1"G restrictions) the 2 is not allowed toaccess the TH

= The MM2 rejects the Trac#in rea pdate /eDuest with an appropriate cause to the 2.

= 7or 2s with emerency 2P" bearers- i.e. at least one 2P" bearer has an /P value reserved for emerency

services- the new MM2 accepts the Trac#in rea pdate /eDuest and deactivates all non=emerency P8'connections as specified in clause 9.,+.3. &f the Trac#in rea pdate procedure is initiated in 21M=&852

state- all non=emerency 2P" bearers are deactivated by the Trac#in rea pdate procedure without bearerdeactivation sinallin between the 2 and the MM2.

The MM2 sends a T ccept (GT&- T& list- 2P" bearer status- '" seDuence number- '"=M1- &M"Boice over P" session supported- 2merency "ervice "upport indicator- 51" "upport &ndication) messae to the

2. &f the active fla is set the MM2 may provide the e'ode0 with @andover /estriction 5ist. GT& is includedif the MM2 allocates a new GT&. &f the Lactive flaL is set in the T /eDuest messae the user plane setup

procedure can be activated in conjunction with the T ccept messae. The procedure is described in detail inT" 3:.3++ J9K. The messae seDuence should be the same as for the 2 triered "ervice /eDuest procedure

specified in clause 9.3.;., from the step when MM2 establishes the bearer(s). The MM2 indicates the 2P" bearer status &2 to the 2. The 2 removes any internal resources related to bearers that are not mar#ed active

in the received 2P" bearer status. @andover /estriction 5ist is described in clause ;.3.9.< LMobility

/estrictionsL. The MM2 sets the &M" Boice over P" session supported as described in clause ;.3.9.>.

&f the MM2 did not receive the Boice "upport Match &ndicator in the MM 1ontet- then the MM2 may send a2 /adio 1apability Match /eDuest to the e'0 as described in clause 9.3.,;. &f the MM2 hasn$t received Boice

"upport Match &ndicator from the e'0 then- based on implementation- MM2 may set &M" Boice over P"session supported &ndication and update it at a later stae. fter step ,*- and in parallel to any of the precedin

steps- the MM2 shall send a 'otify /eDuest (@omoeneous "upport of &M" Boice over P" "essions) messae tothe @""H


= &f the MM2 determines that it needs to update the @omoeneous "upport of &M" Boice over P" "essions-

see clause ;.3.9.>.

The 2merency "ervice "upport indicator informs the 2 that 2merency bearer services are supported. 51"

"upport &ndication indicates whether the networ# supports the 2P1=MO=5/ andAor 1"=MO=5/ as described inT" *3.*<, J9<K.

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?hen receivin the T ccept messae and there is no &"/ ctivated indication the 2 shall set its T&' toLGT&L.

7or a "=G? chane- &"/ ctivated is never indicated by the MM2 as it needs a / with the same "=G? firstto activate &"/. 7or an MM2 chane- &"/ is not activated by the new MM2 to avoid contet transfer procedures

with two old 1' nodes.

&f the T procedure is initiated by manual 1"G selection and occurs via a 1"G cell- the 2 upon receivin theT ccept messae shall add the 1"G &8 and associated P5M' to its llowed 1"G list if it is not already

present. Manual 1"G selection is not supported if the 2 has emerency bearers established.

&f the user plane setup is performed in conjunction with the T ccept messae and the T is performed viaa hybrid cell- then the MM2 shall send an indication whether the 2 is a 1"G member to the /' alon with

the ",=MM2 control messae. 0ased on this information the /' may perform differentiated treatment for1"G and non=1"G members.

'OT2 >H &f the 2 receives a T ccept messae via a hybrid cell- the 2 does not add the correspondin 1"G&8 and associated P5M' to its llowed 1"G list. ddin a 1"G &8 and associated P5M' to the 2$s

local llowed 1"G list for a hybrid cell is performed only by OT or OM 8M procedures.

*,. &f GT& was included in the T ccept- the 2 ac#nowledes the received messae by returnin a T1omplete messae to the MM2.

?hen the Lctive flaL is not set in the T /eDuest messae and the Trac#in rea pdate was not initiated

in 21M=1O''21T28 state- the new MM2 releases the sinallin connection with 2- accordin toclause 9.3.9.

'OT2 CH The new MM2 may initiate 2=/0 establishment (see T" 3:.;,3 J3:K) after eecution of the securityfunctions- or wait until completion of the T update procedure. 7or the 2- 2=/0 establishment may

occur anytime after the T update reDuest is sent.

&n the case of a rejected trac#in area update operation- due to reional subscription- roamin restrictions or access

restrictions (see T" *3.**, J*<K and T" *3.++> J*>K) the new MM2 should not construct an MM contet for the 2. &nthe case of receivin the subscriber data from @""- the new MM2 may construct an MM contet and store the

subscriber data for the 2 to optimi!e sinallin between the MM2 and the @"". reject shall be returned to the 2with an appropriate cause and the ", connection shall be released. pon return to idle- the 2 shall act accordin to

T" *3.,** J,+K.

The new MM2 shall determine the Maimum P' restriction based on the received P' /estriction of each bearer

contet in the 1ontet /esponse messae and then store the new Maimum P' restriction value.

The bearer contets shall be prioriti!ed by the new MM2. &f the new MM2 is unable to support the same number ofactive bearer contets as received from old MM2A"G"'- the prioritisation is used to decide which bearer contets to

maintain active and which ones to delete. &n any case- the new MM2 shall first update all contets in one or more

P=G?s and then deactivate the bearer contet(s) that it cannot maintain as described in the clause LMM2 &nitiated8edicated 0earer 8eactivation ProcedureL. This shall not cause the MM2 to reject the trac#in area update.

The new MM2 shall not deactivate emerency service related 2P" bearers- i.e. 2P" bearers with /P value reservedfor emerency services.

'OT2 ,+H&f M" (2) was in PMM=1O''21T28 state the bearer contets are sent already in the 7orward/elocation /eDuest messae as described in the clause L"ervin /'" relocation proceduresL of

T" *3.+:+ J<K.

&f the trac#in area update procedure fails a maimum allowable number of times- or if the MM2 returns a Trac#in

rea pdate /eject (1ause) messae- the 2 shall enter 2MM 82/2G&"T2/28 state.

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!.3.3.2 E-UTR&* TracBi'g &rea U%#ate ith"ut S-GA +ha'ge

2. TracBi'g &rea U%#ate ReDuest

14. U%#ate L"cati"' ReDuest

!. +"'te/t Res%"'se

. &uthe'ticati"' Securit;

20. TracBi'g &rea U%#ate &cce%t

1!. +a'ce$ L"cati"'

. +"'te/t &cB'"$e#ge

4. +"'te/t ReDuest

1. :u Re$ease +"66a'#

1<. :u Re$ease +"6%$ete

21. TracBi'g &rea U%#ate +"6%$ete

UE e*"#eC P*

7SS



1. +a'ce$ L"cati"' &cB



10. M"#i; Cearer ReDuest


R*+CS+

(A)

P+R Ser5i'g

GA

1. Trigger t" start T&U%r"ce#ure

UE e*"#eC MME 8$# MME

8$# S4 SGS* P*GA 7SS

11. P+E :'itiate# :P-+&*Sessi"' M"#iicati"'

0i1ure +'3'3'&$%2 $!TRA" Trackin1 Area !pdate #ithout S$GB chan1e

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps ,* and ,; concern GTP

based "9A">.

'OT2 *H &n case of Trac#in rea pdate without MM2 chane the sinallin in steps ;- 9- < and steps C=,C are

s#ipped. chane of 2 Time None- ser 1"G information or "ervin 'etwor# is sinalled in the net"ervice /eDuest. &f T& chane need to be reported to the PG?- location chane reportin procedure

described in clause 9.C.* is performed.

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'OT2 3H 8eferred reportin of 2 Time None- or "ervin 'etwor# per 'OT2 * may fail when inter=MM2A"G"'mobility occurs before a 2 sends "2/B&12 /2E2"T and the taret MM2A"G"' (e.. pre=/elease

,+) does not support the L1hane to /eportL fla.


*. The 2 initiates a T procedure by sendin- to the e'ode0- a Trac#in rea pdate /eDuest (2 1ore

'etwor# 1apability- M" 'etwor# 1apability- active fla- 2P" bearer status- old GT&- Old GT& Type- lastvisited T&- P=TM"& sinature- additional GT&- %"&"G"'- %"&"M2- '" seDuence number- '"=M1- Boice

domain preference and 2$s usae settin) messae toether with //1 parameters indicatin the "elected

'etwor# and the old GMM2&. n eception is that- if the T was triered for load re=balancin purposes(see clause ;.3.<.3)- the old GMM2& is not included in the //1 parameters. The 2 shall set the Old GT&

Type to indicate whether the Old GT& is a native GT& or is mapped from a P=TM"& and /&.

&f the 2$s T&' indicates LGT&L or L/T=related TM"&L and the 2 holds a valid GT& then the old GT&

indicates this valid GT&. &f the 2$s T&' indicates LP=TM"&L and the 2 holds a valid P=TM"& and related /&then these two elements are indicated as the old GT&. Mappin a P=TM"& and /& to a GT& is specified in

nne @. ?hen the 2 is in connected mode (e.. in /P1@) when it reselects to 2=T/'- the 2 shallset its T&' to LP=TM"&L.

&f the 2 holds a valid GT& and the old GT& indicates a GT& mapped from a P=TM"& and /&- then the 2indicates the GT& as additional GT&. &f the old GT& indicates a GT& mapped from a P=TM"& and /&- andthe 2 has a valid P=TM"& sinature- the P=TM"& sinature shall be included.

The additional GT& in the Trac#in rea pdate /eDuest messae allows the new MM2 to find any already

eistin 2 contet stored in the new MM2 when the old GT& indicates a value mapped from a P=TM"& and/&.

The //1 parameter Lold GMM2&L ta#es its value from the identifier that is sinalled as the old GT&accordin to the rules above. 7or a combined MM2A"G"' the e'ode0 is confiured to route the MM2=code(s)

of this combined node to the same combined node. This e'ode0 is also confiured to route MM2=code(s) ofGT&s that are enerated the 2$s mappin of the P=TM"&s allocated by the combined node. "uch an e'ode0

confiuration may also be used for separate nodes to avoid chanin nodes in the pool caused by inter /T

mobility.

The last visited T& shall be included in order to help the MM2 produce a ood list of T&s for any subseDuentT ccept messae. "elected 'etwor# indicates the networ# that is selected. ctive fla is a reDuest by the

2 to activate the radio and ", bearers for all the active 2P" 0earers by the T procedure. The 2$s &"/capability is included in the 2 1ore 'etwor# 1apability element. The 2P" bearer status indicates each 2P"

bearer that is active in the 2. The T /eDuest messae shall be interity protected by the '"=M1 asdescribed in T" 33.;+, J;,K. %"&"M2 is included if the 2 has valid security parameters. '" seDuence number

indicates the seDuential number of the '" messae.

%"&"G"' is included if the 2 indicates a GT& mapped from a P=TM"& in the information element Lold GT&L.


clause ;.3.9.C.

3. The e'ode0 derives the MM2 from the //1 parameters carryin the old GMM2& and the indicated "elected 'etwor#. &f that GMM2& is not associated with the e'ode0- or the GMM2& is not available or the 2

indicates that the T procedure was triered by load re=balancin- the e'ode0 selects the MM2 as describedin clause ;.3.>.3 on LMM2 "election 7unctionL. The e'ode0 forwards the T /eDuest messae toether with

the 1"G access mode- 1"G &8- T&S21G& of the cell from where it received the messae and with the "elected 'etwor# to the MM2. 1"G &8 is provided by /' if the 2 sends the T /eDuest messae via a 1"G cell or

a hybrid cell. 1"G access mode is provided if the 2 sends the T /eDuest messae via a hybrid cell. &f the1"G access mode is not provided but the 1"G &8 is provided- the MM2 shall consider the cell as a 1"G cell.

7or "&PTO at the 5ocal 'etwor# with stand=alone G? architecture the e'ode0 includes the 5ocal @ome 'etwor# &8 in the &nitial 2 Messae and in plin# '" Transport messae if the taret cell is in a 5ocal

@ome 'etwor#.

;. The new MM2 differentiates the type of the old node- i.e. MM2 or "G"'- as specified in clause ;.3.,C- uses theGT& received from the 2 to derive the old MM2A"; "G"' address and sends a 1ontet /eDuest (old GT&-

MM2 ddress- 2 Balidated- complete T /eDuest messae- P=TM"& "inature) messae to the old

MM2A"; "G"' to retrieve the user information. 2 Balidated indicates that the new MM2 has validated the

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interity protection of the T messae- e.. based on native 2P" security contet for the 2. To validate the1ontet /eDuest the old MM2 uses the complete T /eDuest messae and the old "; "G"' uses the P=TM"&

"inature and responds with an appropriate error if interity chec# fails in old MM2A"; "G"'.. This shallinitiate the security functions in the new MM2. &f the security functions authenticate the 2 correctly- the new

MM2 shall send a 1ontet /eDuest (&M"&- complete T /eDuest messae- MM2 ddress- 2 Balidated)messae to the old MM2A"; "G"' with the 2 Balidated set. &f the new MM2 indicates that it has

authenticated the 2 or if the old MM2Aold "; "G"' authenticates the 2- the old MM2Aold "; "G"' starts atimer.

&f the 2 with emerency bearers is not authenticated in the old MM2Aold "; "G"' (in a networ# supportinunauthenticated 2s) the old MM2Aold "; "G"' continues the procedure with sendin a 1ontet /esponse and

startin the timer also when it cannot validate the 1ontet /eDuest.

9. &f the 1ontet /eDuest is sent to an old MM2 the old MM2 responds with a 1ontet /esponse (&M"&- M2

&dentity (&M2&"B)- unused 2P" uthentication Bectors- %"&"M2- % "M2- 2P" 0earer 1ontet(s)- "ervin G?sinallin ddress and T2&8(s)- M" &nfo 1hane /eportin ction (if available)- 1"G &nformation /eportin

ction (if available)- 2 Time None- 2 1ore 'etwor# 1apability- 2 "pecific 8/F Parameters- 1hane to/eport (if present)) messae.

&f the 1ontet /eDuest is sent to an old "; "G"' the old "; "G"' responds with a 1ontet /esponse (&M"&-

M2 &dentity (if available)- unused uthentication Euintets- 1%- &%- %"&"G"'- 2P" 0earer 1ontet(s)- "ervinG? sinallin ddress and T2&8(s)- &"/ "upported- M" &nfo 1hane /eportin ction (if available)- 1"G&nformation /eportin ction (if available)- 2 Time None- 2 1ore 'etwor# 1apability- 2 "pecific 8/F

Parameters- 1hane to /eport (if present)) messae. The uthentication Euintets are maintained by the old ";

"G"'. T" 33.;+, J;,K ives further details on the transfer of security related information.

1hane to /eport fla is included by the old MM2 or the old "; "G"' if reportin of chane of 2 Time None-or "ervin 'etwor#- or both towards "ervin G? A P8' G? was deferred by the old MM2 or old "; "G"'.

&f the 1ontet /esponse messae did not include &M2&"B and the MM2 does not already store the &M2&"B ofthe 2- the MM2 shall retrieve the M2 &dentity (&M2&"B) from the 2.

The P8' G? ddress and T2&8(s) (for GTP=based "9A">) or G/2 %eys (PM&P=based "9A"> at the P8'

G?(s) for uplin# traffic and the T&(s)- is part of the 2P" 0earer 1ontet. &"/ "upported is indicated if the old"G"' and associated "ervin G? are capable to activate &"/ for the 2.

The new MM2 shall inore the 2 1ore 'etwor# 1apability contained in the 1ontet /esponse only when it

has previously received an 2 1ore 'etwor# 1apability in the Trac#in rea pdate /eDuest. &f the 2 is not#nown in the old MM2Aold "; "G"' or if the interity chec# for the T reDuest messae fails- the old

MM2Aold "; "G"' responds with an appropriate error cause.

&f the 2 receives emerency bearer services from the old MM2Aold "; "G"' and the 2 is &11less- &M"&

can not be included in the 1ontet /esponse. 7or emerency attached 2s- if the &M"& cannot be authenticated-then the &M"& shall be mar#ed as unauthenticated. lso- in this case- security parameters are included only if

available.


MM2Aold "; "G"' shall include the 5ocal @ome 'etwor# &8 of the old cell in the 2P" 0earer contetcorrespondin to the "&PTO at the 5ocal 'etwor# P8' connection.

:. &f the interity chec# of T /eDuest messae (sent in step *) failed- then authentication is mandatory. Theauthentication functions are defined in clause 9.3.,+ on L"ecurity 7unctionL. 1ipherin procedures are described

in clause 9.3.,+ on L"ecurity 7unctionL. &f GT& allocation is oin to be done and the networ# supportscipherin- the '" messaes shall be ciphered.

&f this T reDuest is received for a 2 which is already in 21M1O''21T28 state and the P5M'=&8 of theT& sent by the e'ode0 in "tep 3 is different from that of the GT& included in the T /eDuest messae- the

MM2 shall delay authenticatin the 2 until after "tep *, (T 1omplete messae).

'OT2 ;H The MM2 delays the authentication such that the 2 first updates its reistered P5M'=&8 to the new

P5M'=&8 selected by the /' durin handover. The new P5M'=&8 is provided by the MM2 to the 2as part of the GT& in the T accept messae in "tep *+. 8oin this ensures that the same P5M'=&8 is

used in the derivation of the %asme #ey by both the networ# and the 2.

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&f the new MM2 is confiured to allow emerency bearer services for unauthenticated 2 the new MM2 behaveas followsH

= where a 2 has only emerency bearer services- the MM2 either s#ip the authentication and security procedure or accepts that the authentication may fail and continues the Trac#in rea pdate procedureI or

= where a 2 has both emerency and non emerency bearer services and authentication fails- the MM2

continues the Trac#in rea pdate procedure and deactivates all the non=emerency P8' connections asspecified in clause 9.,+.3.

<. &f the old node is an old MM2 the new MM2 sends a 1ontet c#nowlede messae to the old MM2. The old

MM2 mar#s in its contet that the information in the G? and the @"" are invalid. This ensures that the MM2updates the G?s and the @"" if the 2 initiates a T procedure bac# to the MM2 before completin the

onoin T procedure.

'OT2 9H pdatin the G?s refers to modification of session(s) on the "ervin G?. This will result in successful

re=establishment of the ",,A"; tunnel between the MM2A"G"' and the "ervin G?.

&f the old node is an old "; "G"' the MM2 sends a 1ontet c#nowlede (&"/ ctivated) messae to the old"G"'. nless &"/ ctivated is indicated by the MM2- the old "; "G"' mar#s in its contet that the

information in the G?s is invalid. This ensures that the old "; "G"' updates the G?s if the 2 initiates a / procedure bac# to the old "; "G"' before completin the onoin T procedure. &f &"/ ctivated is indicatedto the old "; "G"'- this indicates that the old "; "G"' shall maintain its 2 contet includin authentication

Duintets and stop the timer started in step ;. &n this case- if the &mplicit 8etach timer is runnin- the old "; "G"'shall re=start it with a slihtly larer value than the 2$s G2/'AT/' 8eactivate &"/ timer. lso- in this

case- if the old "G"' has maintained the "ervin G? address for user plane and "; GTP= T2&8- the old"G"' shall remove "ervin G? address for user plane and "; GTP= T2&8 locally. ?hen &"/ ctivated is not

indicated and this timer epires the old "G"' deletes all bearer resources of that 2. s the 1ontetc#nowlede from the MM2 does not include any "=G? chane the "; "G"' does not send any 8elete

"ession /eDuest messae to the "=G?. The MM2 shall not activate &"/ if the associated "ervin G? does notsupport &"/.

&f the security functions do not authenticate the 2 correctly- then the T shall be rejected- and the MM2 shall

send a reject indication to the old MM2Aold "; "G"'. The old MM2Aold "; "G"' shall continue as if the&dentification and 1ontet /eDuest was never received.

>. Boid.

C. &f the MM2 has chaned the new MM2 adopts the bearer contets received from the old MM2A"G"' as the2$s 2P" bearer contets to be maintained by the new MM2. The MM2 establishes the 2P" bearer(s) in the

indicated order. The MM2 deactivates the 2P" bearers which cannot be established.

The MM2 verifies the 2P" bearer status received from the 2 with the 2P" bearer contets it maintains and

releases any networ# resources related to 2P" bearers that are not active in the 2. &f there is no bearer contetat all- the MM2 rejects the T /eDuest. &f the MM2 has chaned the new MM2 sends a Modify 0earer

/eDuest (new MM2 address and T2&8- &"/ ctivated- /T type) messae per P8' connection to the "ervin

G?. &f there is no need for the "G? to send the sinallin to the P8' G?- the MM2 may send Modify ccess

0earers /eDuest (new MM2 address and T2&8) per 2 to the "ervin G? to optimi!e the sinallin. The P8'G? address is indicated in the bearer contets. &f indicated- the information &"/ ctivated indicates that &"/ is

activated. &f the P8' G? reDuested 2$s location andAor ser 1"G information- the MM2 also includes theser 5ocation &nformation &2 andAor ser 1"G &nformation &2 in this messae. &f either the 2 Time None has

chaned or 1ontet /esponse messae indicated pendin 2 Time None chane reportin (via 1hane to /eportfla)- the MM2 includes the 2 Time None &2 in this messae. &f either the "ervin 'etwor# has chaned or

1ontet /esponse messae indicated pendin "ervin 'etwor# chane reportin (via 1hane to /eport fla) theMM2 includes the new "ervin 'etwor# &2 in this messae. &n networ# sharin scenarios "ervin 'etwor#

denotes the servin core networ#. &f the old node is an old MM2 at a Trac#in rea pdate with a MM2 chane&"/ ctivated shall not be indicated.

'OT2 :H The ser 1"G &nformation &2 is only sent in step C if the Lctive flaL is set in the T /eDuestmessae.

?hen the Modify ccess 0earers /eDuest or Modify 0earer /eDuest does not indicate &"/ ctivated the "=G?

deletes any &"/ resources by sendin a 8elete 0earer /eDuest to the other 1' node that has bearer resources on

the "=G? reserved.

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,+. &f the /T type has chaned- or the "ervin G? has received the ser 5ocation &nformation &2 or the 2 TimeNone &2 or ser 1"G &nformation &2 andAor the "ervin 'etwor# &2 from the MM2 in step C- the "ervin G?

informs the P8' G?(s) about this information that e.. can be used for charin- by sendin the messaeModify 0earer /eDuest (/T type) per P8' connection to the P8' G?(s) concerned. ser 5ocation

&nformation &2 andAor 2 Time None &2 andAor ser 1"G &nformation &2 andAor "ervin 'etwor# &2 are alsoincluded if they are present in step C.

&f the Modify 0earer /eDuest messae is not sent because of above reasons and the P8' G? charin is paused- then the "G? shall send Modify 0earer /eDuest messae with P8' 1harin Pause "top &ndication to

inform the P8' G? that the charin is no loner paused. Other &2s are not included in this messae.

,,. &f dynamic P11 is deployed- and /T type information or 2 location information needs to be conveyed from

the P8' G? to the P1/7- then the P8' G? shall send this information to the P1/7 by means of an &P=1'"ession Modification procedure as defined in T" *3.*+3 J:K.

'OT2 <H The P8' G? does not need to wait for the P1/7 response- but continues in the net step. &f the P1/7response leads to an 2P" bearer modification the P8' G? should initiate a bearer update procedure.

,*. The P8' G? updates its contet field to allow 85 P8s to be routed to the correct "ervin G?. P8' G?returns a Modify 0earer /esponse (M"&"8') to the "ervin G?. The M"&"8' is included if the P8' G? has

it stored in its 2 contet.

,3. The "ervin G? updates its bearer contet. &f &"/ ctivated is indicated in step C and /T Type received in

step C indicates 2=T/'- then the "ervin G? only updates the MM2 1ontrol Plane ddress stored locallyand #eep the "G"' related information unchaned. lso- in this case- if the "ervin G? has maintained the

"G"' address for user plane and "; GTP= T2&8- the "ervin G? removes the "G"' address for user planeand "; GTP= T2&8 locally. Otherwise the "ervin G? shall update all of the information stored locally for

this 2 with the related information received from the MM2. This allows the "ervin G? to route 0earer P8sto the P8' G? when received from e'ode0. The "ervin G? shall return a Modify 0earer /esponse ("ervin

G? address and T2&8 for uplin# traffic) messae to the new MM2 as a response to a Modify 0earer /eDuestmessae- or a Modify ccess 0earers /esponse ("ervin G? address and T2&8 for uplin# traffic) as a response

to a Modify ccess 0earers /eDuest messae. &f the "ervin G? cannot serve the MM2 /eDuest in the Modifyccess 0earers /eDuest messae without "9A"> sinallin other than to unpause charin in the P8' G? or

without correspondin Gc sinallin when PM&P is used over the "9A"> interface- it shall respond to the MM2with indicatin that the modifications are not limited to ",= bearers- and the MM2 shall repeat its reDuest usin

Modify 0earer /eDuest messae per P8' connection.

,;. The new MM2 verifies whether it holds subscription data for the 2 identified by the GT&- the additional

GT& or by the &M"& received with the contet data from the old 1' node.

&f there are no subscription data in the new MM2 for this 2- or for some networ# sharin scenario (e..

G?1') if the P5M'=&8 of the T& supplied by the e'ode0 is different from that of the GT& in the 2$scontet- then the new MM2 informs the @"" of the chane of MM2 by sendin an pdate 5ocation /eDuest

(MM2 &d- &M"&- 5/=7las- MM2 1apabilities- @omoenous "upport of &M" Boice over P" "essions- 2"/B11 capability- eDuivalent P5M' list- M2 &dentity (&M2&"B)) messae to the @"". 5/=7las indicates

that update location is sent from an MM2 and the MM2 reistration shall be updated in @"". The @"" does not

cancel any "G"' reistration. The MM2 capabilities indicate the MM2$s support for reional access restrictionsfunctionality. The inclusion of the eDuivalent P5M' list indicates that the MM2 supports the inter=P5M'handover to a 1"G cell in an eDuivalent P5M' usin the subscription information of the taret P5M'. The

L@omoenous "upport of &M" Boice over P" "essionsL indication (see clause ;.3.9.>) shall not be includedunless the MM2 has completed its evaluation of the support of L&M" Boice over P" "essionL as specified in

clause ;.3.9.>. The M2 &dentity is included if step 9 caused the MM2 to retrieve the &M2&"B from the 2.

'OT2 >H t this step- the MM2 may not have all the information needed to determine the settin of the &M" voice

over P" "ession "upported indication for this 2 (see clause ;.3.9.>). @ence the MM2 can send theL@omoenous "upport of &M" Boice over P" "essionsL later on in this procedure.

&f the 2 initiates the T procedure in a BP5M' supportin utonomous 1"G /oamin and the @P5M' hasenabled utonomous 1"G /oamin in the BP5M' (via "ervice 5evel reement) and the MM2 needs to

retrieve the 1"G subscription information of the 2 from the 1""- the MM2 initiates the pdate 1"G 5ocationProcedure with 1"" as described in clause 9.3.,*.

&f the MM2 determines that only the 2 "/B11 capability has chaned- the MM2 sends a 'otify /eDuest to

the @"" to inform about the chaned 2 "/B11 capability.

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&f all the 2P" bearers of the 2 have emerency /P value- the new MM2 may s#ip the update location procedure or proceed even if the update location fails.

,9. The @"" sends a 1ancel 5ocation (&M"&- 1ancellation type) messae to the old MM2 with a 1ancellation Typeset to pdate Procedure.

,:. ?hen receivin a 1ancel 5ocation messae and the timer started in step ; is not runnin- the old MM2 removes

the MM and bearer contets. Otherwise- the contets are removed when the timer epires. &t also ensures that theMM contet is #ept in the old MM2 for the case the 2 initiates another T procedure before completin the

onoin T procedure to the new MM2. The old MM2 ac#nowledes with a 1ancel 5ocation c# (&M"&)

messae.

'OT2 CH &"/ ctivated is never indicated from new to old MM2.

"o an old MM2 deletes all the bearer resources of the 2 in any case when the timer started in step ; epires-which is independent on receivin a 1ancel 5ocation messae.

,<. ?hen receivin the 1ontet c#nowlede messae and if the 2 is &u 1onnected- the old "G"' sends an &u

/elease 1ommand messae to the /'1 after the timer started in step ; has epired.

,>. The /'1 responds with an &u /elease 1omplete messae.

,C. The @"" ac#nowledes the pdate 5ocation /eDuest by returnin an pdate 5ocation c# (&M"&- "ubscription

8ata) messae to the new MM2 after the cancellin of the old MM2 contet is finished. &f all chec#s aresuccessful- the MM2 constructs an MM contet for the 2. The "ubscription 8ata may contain the 1"G

subscription data for the reistered P5M' and for the eDuivalent P5M' list reDuested by MM2 in step ,;.

&f the 2 initiates the T procedure at a 1"G cell- the new MM2 shall chec# whether the 1"G &8 and

associated P5M' is contained in the 1"G subscription and is not epired. &f the 1"G &8 and associated P5M'

is not present or epired- the MM2 shall send a Trac#in rea pdate reject messae to the 2 with an

appropriate cause value. The 2 shall remove the 1"G &8 and associated P5M' from its llowed 1"G list if present.

&f the pdate 5ocation is rejected by the @""- the new MM2 rejects the T /eDuest from the 2 with an

appropriate cause sent in the T /eject messae to the 2. &n such cases- the new MM2 releases any localMM2 2P" 0earer contets for this particular 2.

*+. &f due to reional subscription restrictions or access restrictions (e.. 1"G restrictions) the 2 is not allowed to

access the TH

= The MM2 rejects the Trac#in rea pdate /eDuest with an appropriate cause to the 2.

= 7or 2s with emerency 2P" bearers- i.e. at least one 2P" bearer has an /P value reserved for emerencyservices- the new MM2 accepts the Trac#in rea pdate /eDuest and deactivates all non=emerency P8'

connections as specified in clause 9.,+.3. &f the Trac#in rea pdate procedure is initiated in 21M=&852state- all non=emerency 2P" bearers are deactivated by the Trac#in rea pdate procedure without bearer

deactivation sinallin between the 2 and the MM2.

The MM2 responds to the 2 with a Trac#in rea pdate ccept (GT&- T&=list- 2P" bearer status- '"

seDuence number- '"=M1- &"/ ctivated- &M" Boice over P" session supported- 2merency "ervice"upport indicator- 51" "upport &ndication) messae. &f the active fla is set the @andover /estriction 5ist may

be sent to e'ode0 as e'ode0 handles the roamin restrictions and access restrictions in the &ntra 2=T/'

case. &f the Lactive flaL is set in the T /eDuest messae the user plane setup procedure is activated inconjunction with the T ccept messae. The procedure is described in detail in T" 3:.3++ J9K. The messae

seDuence should be the same as for the 2 triered "ervice /eDuest procedure specified in clause 9.3.;., from

the step when MM2 establish the bearers(s). The 2P" bearer status indicates the active bearers in the networ#.The 2 removes any internal resources related to bearers not mar#ed active in the received 2P" bearer status. &f

&"/ ctivated is indicated to the 2- this indicates that its P=TM"& and /& shall remain reistered with thenetwor# and shall remain valid in the 2. t a Trac#in rea pdate with an MM2 chane &"/ ctivated shall

not be indicated. t a Trac#in rea pdate without an MM2 chane- if &"/ is activated for the 2 when theMM2 receives the Trac#in rea pdate /eDuest- the MM2 should maintain &"/ by indicatin &"/ ctivated in

the Trac#in rea pdate ccept messae. @andover /estriction 5ist is described in clause ;.3.9.< LMobility/estrictionsL. The MM2 sets the &M" Boice over P" session supported as described in clause ;.3.9.>.

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&f the MM2 did not receive the Boice support match indicator in the MM 1ontet- then the MM2 may send a2 /adio 1apability Match /eDuest to the e'0 as described in clause 9.3.,;. &f the MM2 hasn$t received Boice

support match indicator from the e'0 then based on implementation MM2 may set &M" Boice over P" sessionsupported &ndication and update it at a later stae. fter step ,;- and in parallel to any of the precedin steps- the

MM2 shall send a 'otify /eDuest (@omoeneous "upport of &M" Boice over P" "essions) messae to the @""H


= &f the MM2 determines that it needs to update the @omoeneous "upport of &M" Boice over P" "essions-

see clause ;.3.9.>.

The 2merency "ervice "upport indicator informs the 2 that 2merency bearer services are supported. 51""upport &ndication indicates whether the networ# supports the 2P1=MO=5/ andAor 1"=MO=5/ as described in

T" *3.*<, J9<K.

?hen receivin the T ccept messae and there is no &"/ ctivated indication the 2 shall set its T&' to

LGT&L. ?hen &"/ ctivated is indicated and the 2$s T&' indicates LGT&L the 2$s T&' shall not bechaned. ?hen &"/ ctivated is indicated and the T&' is LP=TM"&L or L/T=related TM"&L the 2 shall set its

T&' to L/T=related TM"&L.

7or an MM2 chane &"/ is not activated by the new MM2 to avoid contet transfer procedures with two old 1'nodes.

7or an emerency attached 2- emerency &"/ is not activated.

&f the T procedure is initiated by manual 1"G selection and occurs via a 1"G cell- the 2 upon receivinT ccept messae shall add the 1"G &8 and associated P5M' to its llowed 1"G list if it is not already

present. Manual 1"G selection is not supported if the 2 has emerency bearers established.

&f the user plane setup is performed in conjunction with the T ccept messae and the T is performed via

a hybrid cell- then the MM2 shall send an indication whether the 2 is a 1"G member to the /' alon withthe ",=MM2 control messae. 0ased on this information the /' may perform differentiated treatment for

1"G and non=1"G members.

'OT2 ,+H&f the 2 receives a T ccept messae via a hybrid cell- the 2 does not add the correspondin 1"G&8 and associated P5M' to its llowed 1"G list. ddin a 1"G &8 and associated P5M' to the 2$slocal llowed 1"G list for a hybrid cell is performed only by OT or OM 8M procedures.

*,. &f the GT& was chaned the 2 ac#nowledes the new GT& by returnin a Trac#in rea pdate 1ompletemessae to the MM2.

?hen the Lctive flaL is not set in the T /eDuest messae and the Trac#in rea pdate was not initiatedin 21M=1O''21T28 state- the MM2 releases the sinallin connection with 2- accordin to clause 9.3.9.

'OT2 ,,HThe new MM2 may initiate 2=/0 establishment (see T" 3:.;,3 J3:K) after eecution of the securityfunctions- or wait until completion of the T update procedure. 7or the 2- 2=/0 establishment may

occur anytime after the T update reDuest is sent.

&n the case of a rejected trac#in area update operation- due to reional subscription- roamin restrictions- or access

restrictions (see T" *3.**, J*<K and T" *3.++> J*>K) the new MM2 should not construct an MM contet for the 2. &nthe case of receivin the subscriber data from @""- the new MM2 may construct an MM contet and store the

subscriber data for the 2 to optimi!e sinallin between the MM2 and the @"". reject shall be returned to the 2

with an appropriate cause and the ", connection shall be released. pon return to idle- the 2 shall act accordin toT" *3.,** J,+K.

&f the new MM2 is unable to update the bearer contet in one or more P=G?s- the new MM2 shall deactivate the

correspondin bearer contets as described in clause LMM2 &nitiated 8edicated 0earer 8eactivation ProcedureL. Thisshall not cause the MM2 to reject the trac#in area update.

The new MM2 shall determine the Maimum P' restriction based on the received P' /estriction of each bearercontet in the 1ontet /esponse messae and then store the new Maimum P' restriction value.

The bearer contets shall be prioriti!ed by the new MM2. &f the new MM2 is unable to support the same number of

active bearer contets as received from old MM2A"G"'- the prioritisation is used to decide which bearer contets tomaintain active and which ones to delete. &n any case- the new MM2 shall first update all contets in one or more

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P=G?s and then deactivate the contet(s) that it cannot maintain as described in clause LMM2 &nitiated 8edicated0earer 8eactivation ProcedureL. This shall not cause the MM2 to reject the trac#in area update.

The new MM2 shall not deactivate emerency service related 2P" bearers- i.e. 2P" bearers with /P value reservedfor emerency services.

'OT2 ,*H&f M" (2) was in PMM=1O''21T28 state the bearer contets are sent already in the 7orward

/elocation /eDuest messae as described in clause L"ervin /'" relocation proceduresL ofT" *3.+:+ J<K.

&f the trac#in area update procedure fails a maimum allowable number of times- or if the MM2 returns a Trac#in

rea pdate /eject (1ause) messae- the 2 shall enter 2MM 82/2G&"T2/28 state.

!.3.3.3 R"uti'g &rea U%#ate ith MME i'teracti"' a'# ith"ut S-GA cha'ge

The /outin rea pdate without "=G? chane procedure ta#es place when a 2 that is reistered with an MM2

selects a T/' or G2/' cell and the "=G? is not chaned by the procedure. &n this case- the 2 chanes to a

/outin rea that the 2 has not yet reistered with the networ#. This procedure is initiated by an 21M=&852 state 2and may also be initiated if the 2 is in 21M=1O''21T28 state. The / update case is illustrated in 7iure 9.3.3.3=

,.

'OT2 ,H This procedure covers the MM2 to *G or 3G "G"' /.

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(A)

2a. R"utei'g &rea U%#ate ReDuest



12. U%#ate L"cati"'

1!. U #ate L"cati"' &cB

4. +"'te/t Res%"'se !. &uthe'ticati"'

1<. R"utei'g &rea U%#ate &cce%t

13. +a'ce$ L"cati"'



3. +"'te/t ReDuest

1. R"utei'g &rea U%#ate +"6%$ete

UE R*+ CSS e*"#eC SGS* MM2

Ser5i'g GA

P* GA

7SS

1. UE +ha'ges t"UTR&* "r GER&*

<. M"#i; Cearer ReDuest


2. R"utei'g &rea U%#ate ReDuest

14. S1-&P S1 Re$ease +"66a'#

Re$ease E-UTR&* c"''ecti"'

14. S1-&P S1 Re$ease +"6%$ete

P+R

21. R&C &ssig'6e't ReDuest 21. R&C &ssig'6e't Res%"'se

20. Ser5ice ReDuest



. P+E :'itiate# :P-+&*Sessi"' M"#iicati"'

Old

"G"'

0i1ure +'3'3'3$%2 Routin1 Area !pdate #ith 88 interaction and #ithout S$GB chan1e

'OT2 *H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "teps > and ,+concern GTP based "9A">.

,. The 2 selects a T/' or G2/' cell. This cell is in a /outin rea that the 2 not yet reistered with thenetwor#- or the 2 reselects a T/' or G2/' cell and the T&' indicates LGT&L. The 2 in21M=1O''21T28 state may chane to the G2/' cell throuh 'etwor# ssisted 1ell 1hane ('11).

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*a. The 2 sends a /outin rea pdate /eDuest (old P=TM"&- P=TM"& Type- old /&- 2 1ore 'etwor#1apability- M" 'etwor# 1apability- P=TM"& "inature- additional P=TM"&A/&- %"&- Boice domain preference

and 2$s usae settin) messae to the new "G"'. The 2 shall set the P=TM"& Type to indicate whether the P=TM"& is a native P=TM"& or is mapped from a GT&.

&f the 2$s internal T&' indicates LGT&L and the 2 holds a valid GT& then the 2 indicates the GT& as the

old P=TM"& and old /&. &f the 2$s T&' indicates LP=TM"&L or L/T=related TM"&L and the 2 holds a validP=TM"& and related /& then these two elements are indicated as old P=TM"& and old /&. Mappin a GT& toa P=TM"& and an /& is specified in T" *3.++3 JCK.

&f the 2 holds a valid P=TM"& and related /& and the old P=TM"& and old /& indicate a P=TM"&A/&mapped from a GT&- then the 2 indicates these parameters as additional P=TM"&A/&.

The old P=TM"& is indicated in the / /eDuest messae for &u=mode only. 7or Gb mode the T55& is derivedfrom the value that is determined as the old P=TM"& accordin to the rules above. The routin parameter that is

sinalled in the //1 sinallin to the /'1 for routin to the "G"' is derived from the identifier that issinalled as the old P=TM"& accordin to the rules above. 7or a combined MM2A"G"' the /' is confiured to

route the '/&(s) of this combined node to the same combined node. The /' is also confiured to route '/&(s)of P=TM"&s that are enerated by the 2$s mappin of the GT&s allocated by the combined node. "uch a /'

confiuration may also be used for separate nodes to avoid chanin nodes in the pool caused by inter /T

mobility.

&f the 2 has a follow=on reDuest- i.e. if there is pendin uplin# traffic (sinallin or data)- the 3G "G"' may

use- as an implementation option- the follow=on reDuest indication to release or #eep the &u connection after the

completion of the / update procedure.

%"& is mapped from an e%"& identifyin a % "M2 if the 2 indicates a P=TM"& mapped from GT& in the

information element Lold P=TM"&L. %"& identifies a (1%- &%) pair if the 2 indicates a P=TM"& in theinformation element Lold P=TM"&L.

The 2 sets the voice domain preference and 2$s usae settin accordin to its confiuration- as described inclause ;.3.9.C.

*b. The /'1 shall add the /outin rea &dentity- 1"G access mode- 1"G &8 before forwardin the messae to the

"G"'. This / identity corresponds to the /& in the MM system information sent by the /'1 to the 2. The

0"" shall add the 1ell Global &dentity (1G&) of the cell where the 2 is located before passin the messae tothe new "G"'. 1"G &8 is provided by /' if the 2 sends the / /eDuest messae via a 1"G cell or a

hybrid cell. 1"G access mode is provided if the 2 sends the / /eDuest messae via a hybrid cell. &f the1"G access mode is not provided but the 1"G &8 is provided- the "G"' shall consider the cell as a 1"G cell.

7or "&PTO at the 5ocal 'etwor# the with stand=alone G? architecture the /'1 includes the 5ocal @ome 'etwor# &8 in the &nitial 2 Messae and in 8irect Transfer messae if the taret cell is in a 5ocal @ome

'etwor#.

3. The new "; "G"' determines the type of the old node- i.e. MM2 or "G"'- as specified in clause ;.3.,C- uses

the old /& received from the 2 to derive the old MM2 address- and sends a 1ontet /eDuest (P=TM"&- old/&- 'ew "G"' ddress- P=TM"& "inature) messae to the old MM2 to et the contet for the 2. To

validate the 1ontet /eDuest the old MM2 uses a '" to#en mapped from the P=TM"& "inature. &f the 2 isnot #nown in the old MM2- the old MM2 responds with an appropriate error cause. &f interity chec# fails in the

old MM2- the old MM2 responds with an appropriate error cause which shall initiate the security functions in

the new "; "G"'. &f the security functions authenticate the 2 correctly- the new "; "G"' shall send a 1ontet/eDuest (&M"&- old /&- 'ew "G"' ddress- 2 Balidated) messae to the old MM2.2 Balidated indicates

that the new "; "G"' has authenticated the 2. &f the new "; "G"' indicates that it has authenticated the 2

or if the old MM2 authenticates the 2- the old MM2 starts a timer.

&f the 2 with emerency bearers is not authenticated in the old MM2 (in a networ# supportin unauthenticated

2s) the old MM2 continues the procedure with sendin a 1ontet /esponse and startin the timer also when itcannot validate the 1ontet /eDuest.

;. The old MM2 responds with one 1ontet /esponse (&M"&- M2 &dentity (if available)- %"&- 1%- &%- unuseduthentication Euintets- 2P" 0earer 1ontets- "ervin G? sinallin ddress and T2&8(s)- &"/ "upported-

M" &nfo 1hane /eportin ction (if available)- 1"G &nformation /eportin ction (if available)- 2 TimeNone- 2 1ore 'etwor# 1apability- 2 "pecific 8/F Parameters- 1hane to /eport (if present)) messae. The

P8' G? ddress and T2&8(s) (for GTP=based "9A">) or G/2 %eys (PM&P=based "9A">) for uplin# traffic and

control plane- and the T&(s) is part of the 2P" 0earer contet(s). The unused uthentication Euintets in the MM

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1ontet may be sent if stored by the MM2 and the MM2 received the unused uthentication Euintets from thesame "G"' previously. &"/ "upported is indicated if the old MM2 and associated "ervin G? are capable to

activate &"/ for the 2.

&f the 2 receives emerency bearer services from the old MM2 and the 2 is &11less- &M"& can not be

included in the 1ontet /esponse. 7or emerency attached 2s- if the &M"& cannot be authenticated- then the

&M"& shall be mar#ed as unauthenticated. lso- in this case- security parameters are included only if available.

The new "; "G"' shall inore the 2 1ore 'etwor# 1apability contained in the 1ontet /esponse only when it

has previously received an 2 1ore 'etwor# 1apability in the /outin rea pdate /eDuest. &f 2 is not

#nown in the old MM2- the old MM2 responds with an appropriate error cause.

1hane to /eport fla is included by the old MM2 if reportin of chane of 2 Time None- or "ervin 'etwor#-

or both towards "ervin G? A P8' G? was deferred by the old MM2.

The new "G"' maps the 2P" bearers to P8P contets ,=to=, and maps the 2P" 0earer Eo" parameter values of

an 2P" bearer to the /elease CC Eo" parameter values of a P8P contet as defined in nne 2. The P8Pcontet(s) are established in the indicated order. The "G"' deactivates the P8P contets which cannot be

established.

&f "&PTO at the 5ocal 'etwor# is active for a P8' connection in the architecture with stand=alone G?- the oldMM2 shall include the 5ocal @ome 'etwor# &8 of the old cell in the 2P" 0earer contet correspondin to the"&PTO at the 5ocal 'etwor# P8' connection.

9. "ecurity functions may be eecuted. Procedures are defined in clause 9.3.,+ on L"ecurity 7unctionL.

&f the new "G"' is confiured to allow emerency bearer services for unauthenticated 2 the new "G"'

behave as followsH

= where a 2 has only emerency bearer services- the "G"' either s#ip the authentication and security

procedure or accepts that the authentication may fail and continues the /outin rea pdate procedureI or

= where a 2 has both emerency and non emerency bearer services and authentication fails- the "G"'

continues the /outin rea pdate procedure and deactivates all the non=emerency P8P contets as

specified in T" *3.+:+ J<K.

:. The new "; "G"' sends a 1ontet c#nowlede (&"/ ctivated) messae to the old MM2. nless &"/ isindicated by the new "; "G"'- the old MM2 mar#s in its contet that the information in the G?s is invalid.

This ensures that the old MM2 updates the G? if the 2 initiates a T procedure bac# to the old MM2 beforecompletin the onoin / procedure.

'OT2 3H pdatin the G?s refers to modification of session(s) on the "ervin G?. This will result in successfulre=establishment of the ",,A"; tunnel between the MM2A"G"' and the "ervin G?.

&"/ ctivated indicates to the old MM2 that it shall maintain the 2$s contets and the MM2 stops the timerstarted in step 3. &n this case- if the &mplicit 8etach timer is runnin- the old MM2 shall re=start it with a slihtly

larer value than the 2$s 2=T/' 8eactivate &"/ timer. ?hen &"/ ctivated is not indicated and this timer

epires the old MM2 deletes all bearer resources of that 2. s the 1ontet c#nowlede from the new"; "G"' does not include any "=G? chane the old MM2 does not send any 8elete "ession /eDuest messaeto the "=G?. The "G"' shall not activate &"/ if the associated "ervin G? does not support &"/.

&f the security functions do not authenticate the 2 correctly- then the / is rejected- and the new "; "G"'

sends a reject indication to the old MM2. The old MM2 shall continue as if the &dentification and 1ontet/eDuest was never received.

<. &n this procedure flow the "ervin G? is not relocated. The "G"' sends a Modify 0earer /eDuest (new "G"'

ddress and T2&8- /T type- &"/ ctivated) messae per P8' connection to the "ervin G?. &f indicated- theinformation &"/ ctivated indicates that &"/ is activated. &f the P8' G? reDuested 2$s location info andAor

ser 1"G information- the "G"' also includes the ser 5ocation &nformation &2 andAor ser 1"G information&2 in this messae. &f either the 2 Time None has chaned - or 1ontet /esponse messae from old MM2

indicated pendin 2 Time None chane reportin (via 1hane to /eport fla)- the "G"' includes the 2 Time

None &2 in this messae. &f either the "ervin 'etwor# has chaned- or 1ontet /esponse messae from oldMM2 indicated pendin "ervin 'etwor# chane reportin (via 1hane to /eport fla) the "G"' includes the

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new "ervin 'etwor# &2 in this messae. &n networ# sharin scenarios "ervin 'etwor# denotes the servincore networ#.

?hen the Modify 0earer /eDuest does not indicate &"/ ctivated the "=G? deletes any &"/ resources bysendin a 8elete 0earer /eDuest to the other 1' node that has bearer resources on the "=G? reserved. /T

type indicates a chane in radio access.

&f &"/ ctivated is indicated or "G"' and "G? are confiured to release "; =Plane when 2P" 0earer1ontets associated with the released /0s are to be preserved- the "G"' does not send "G"' address and

T2&8 for =Plane in Modify 0earer /eDuest.

'OT2 ;H The ser 1"G &nformation &2 is not sent in step < if the Lfollow=on reDuest indicationL indicates releasinthe &u connection after the completion of the / update procedure.

>. &f the /T type has chaned or the "ervin G? has received the ser 5ocation &nformation &2 andAor the 2Time None &2 andAor ser 1"G information &2 andAor the "ervin 'etwor# &2 from the MM2 in step < the

"ervin G? informs the P8' G?(s) about the chane of this information that e.. can be used for charin- bysendin the messae Modify 0earer /eDuest (/T type) per P8' connection to the P8' G?(s) concerned.

ser 5ocation &nformation &2 andAor 2 Time None &2 andAor ser 1"G information &2 andAor "ervin 'etwor# &2 are also included if they are present in step <.

C. &f dynamic P11 is deployed- and /T type information or 2 location information needs to be conveyed fromthe P8' G? to the P1/7- then the P8' G? shall send this information to the P1/7 by means of an &P=1'

"ession Modification procedure as defined in T" *3.*+3 J:K.

'OT2 9H The P8' G? does not need to wait for the P1/7 response- but continues in the net step. &f the P1/7

response leads to an 2P" bearer modification the P8' G? should initiate a bearer update procedure.

,+. The P8' G? updates its contet field and returns a Modify 0earer /esponse (M"&"8') messae to the "ervin

G?. M"&"8' is included if the P8' G? has it stored in its 2 contet.

,,. The "ervin G? updates its contet fields. &f &"/ ctivated is indicated in step < and /T Type received in step

< indicates T/' or G2/'- then the "ervin G? only updates the "G"' 1ontrol Plane ddress and #eepsthe MM2 related information unchaned. Otherwise the "ervin G? shall update all of the information stored

locally for this 2 with the related information received from the "G"'. Then the "ervin G? returns a Modify0earer /esponse ("ervin G? address and T2&8 for uplin# traffic) messae.

,*. The new "G"' verifies whether it holds subscription data for the 2 identified by the P=TM"&- the additionalPTM"&A/& or by the &M"& received with the contet data from the old 1' node.

The additional P=TM"&A/& allows the new "G"' to find any already eistin 2 contet stored in the new

"G"'. &f there are no subscription data in the new "G"' for this 2- or for some networ# sharin scenario (e..G?1') if the P5M'=&8 of the /& supplied by the /'1 is different from that of the /& in the 2$s contet-

then the new "G"' informs the @"" of the chane of the "G"' by sendin an pdate 5ocation ("G"'

'umber- "G"' ddress- &M"&- @omoenous "upport of &M" Boice over P" "essions- 2 "/B11 capability-eDuivalent P5M' list) messae to the @"". 7or L@omoenous "upport of &M" Boice over P" "essionsL- see

clause 9.3.> of T" *3.+:+ J<K. The inclusion of the eDuivalent P5M' list indicates that the "G"' supports the

inter=P5M' handover to a 1"G cell in an eDuivalent P5M' usin the subscription information of the taretP5M'.

&f the 2 initiates the / procedure in a BP5M' supportin utonomous 1"G /oamin and the @P5M' has

enabled utonomous 1"G /oamin in the BP5M' (via "ervice 5evel reement) and the "G"' needs toretrieve the 1"G subscription information of the 2 from the 1""- the "G"' initiates the pdate 1"G 5ocation

Procedure with 1"" as described in clause 9.3.,*.

,3. The @"" sends a 1ancel 5ocation (&M"&- 1ancellation Type) messae to the old "G"' with the 1ancellationType set to pdate Procedure.

?hen receivin the 1ancel 5ocation messae the old "G"' removes all the 2 contets. The old "G"'

ac#nowledes with a 1ancel 5ocation c# (&M"&) messae.

,;. ?hen receivin the 1ontet c#nowlede messae from the new "G"' and if the old MM2 has an ",=MM2association for the 2- the source MM2 sends a ",= /elease 1ommand to the source e'ode0 after the timerstarted in step 3 has epired. The //1 connection is released by the source e'ode0. The source e'ode0

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*+. 7or &u=mode- if the 2 has uplin# data or sinallin pendin it shall send a "ervice /eDuest (P=TM"&- 1%"'-"ervice Type) messae to the new "G"'. &f a P=TM"& was allocated in step ,>- that P=TM"& is the one included

in this messae. "ervice Type specifies the reDuested service. "ervice Type shall indicate one of the followinH8ata or "inallin.

*,. &f the 2 has sent the "ervice /eDuest- the new 3G "G"' reDuests the /'1 to establish a radio access bearer by

sendin a /0 ssinment /eDuest (/0 &8(s)- Eo" Profile(s)- GTP "'8s- GTP "'s- P81P "'s)messae to the /'1. &f 8irect Tunnel is established the "G"' provides to the /'1 the "ervin G?$s ddressfor ser Plane and T2&8 for uplin# data.

**. &f the "G"' established 8irect Tunnel in step *,) it shall send Modify 0earer /eDuest per P8' connection tothe "ervin G? and include the /'1$s ddress for ser Plane and downlin# T2&8 for data. The "ervin G?

updates the ddress for ser Plane and T2&8 for downlin# data and return a Modify 0earer /esponse.

'OT2 <H 2P" does not support any 1M25 procedures.

'OT2 >H The new "G"' may initiate /0 establishment after eecution of the security functions (step 9)- or waituntil completion of the / update procedure. 7or the M"- /0 establishment may occur anytime after

the / update reDuest is sent (step *).

&n the case of a rejected routin area update operation- due to reional subscription- roamin restrictions or accessrestrictions (see T" *3.**, J*<K and T" *3.++> J*>K) the new "G"' should not construct an MM contet. &n the case ofreceivin the subscriber data from @""- the new "G"' may construct an MM contet and store the subscriber data for

the 2 to optimi!e sinallin between the "G"' and the @"". reject shall be returned to the 2 with an appropriatecause and the P" sinallin connection shall be released. pon return to idle- the 2 shall act accordin to

T" *3.,** J,+K.

&f the networ# supports the MO1' confiuration for networ# sharin- the "G"' may- if the 2 is not a $'etwor#

"harin "upportin M"$- in this case decide to initiate redirection by sendin a /eroute 1ommand to the /'"- asdescribed in T" *3.*9, J*;K instead of rejectin the routin area update.

&f the new "G"' is unable to update the bearer contet in one or more P=G?s- the new "G"' shall deactivate the

correspondin bearer contets as described in clause L"G"'=initiated P8P 1ontet 8eactivation ProcedureL ofT" *3.+:+ J<K. This shall not cause the "G"' to reject the routin area update.

The new "G"' shall determine the Maimum P' restriction based on the received P' /estriction of each bearer


The P8P contets shall be prioriti!ed by the new "G"'. &f the new "G"' is unable to support the same number of

active P8P contets as received from the old MM2- the prioritisation is used to decide which P8P contets to maintainactive and which ones to delete. &n any case- the new "G"' shall first update all P8P contets in one or more P=G?s

and then deactivate the P8P contet(s) that it cannot maintain as described in clause L"G"'=initiated P8P 1ontet8eactivation ProcedureL of T" *3.+:+ J<K. This shall not cause the "G"' to reject the routin area update.

'OT2 CH &f the 2 was in PMM=1O''21T28 state the bearer contets are sent already in the 7orward/elocation /eDuest messae as described in clause L"ervin /'" relocation proceduresL of

T" *3.+:+ J<K.

&f the routin area update procedure fails a maimum allowable number of times- or if the "G"' returns a /outin rea

pdate /eject (1ause) messae- the 2 shall enter PMM 82T1@28 state.

!.3.3.4 V"i#

!.3.3.! V"i#

!.3.3. R"uti'g &rea U%#ate ith MME i'teracti"' a'# ith S-GA cha'ge

The /outin rea pdate with "=G? chane procedure ta#es place when a 2 that is reistered with an MM2 selects

a T/' or G2/' cell and the "=G? is chaned by the procedure. &n this case- the 2 chanes to a /outin rea

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that the 2 has not yet reistered with the networ#. This procedure is initiated by an 21M=&852 state 2 and may also be initiated if the 2 is in 21M=1O''21T28 state. This / update case is illustrated in 7iure 9.3.3.:=,.

'OT2 ,H This procedure covers the MM2 to *G or 3G "G"' /.

(A)

2a. R"utei'g &rea U%#ate ReDuest

. +reate Sessi"' ReDuest


12. U%#ate L"cati"'

1!. U%#ate L"cati"' &cB

4. +"'te/t Res%"'se !. Securit; u'cti"'s

1<. R"utei'g &rea U%#ate &cce%t

13. +a'ce$ L"cati"'



3. +"'te/t ReDuest


UE R*+ CSS e*"#eC SGS* MM2 *e

Ser5i'g GA

P*

GA 7SS

1. UE +ha'ges t"UTR&* "r GER&*




14. S1-&P S1 Re$ease +"66a'#

Re$ease E-UTR&* c"''ecti"'

14. S1-&P S1 Re$ease +"6%$ete

P+R


1. e$ete Sessi"' Res%"'se (>)

8$#

Ser5i'g GA

21. R&C &ssig'6e't ReDuest

21. R&C &ssig'6e't Res%"'se

20. Ser5ice ReDuest



. P+E :'itiate# :P-+&*Sessi"' M"#iicati"'

Old

"G"'

0i1ure +'3'3',$%2 Routin1 Area !pdate #ith 88 interaction and #ith S$GB chan1e

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'OT2 *H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "teps > and ,+concern GTP based "9A">

,. The 2 selects a T/' or G2/' cell. This cell is in a /outin rea that the 2 not yet reistered with thenetwor# or the 2 reselects a T/' or G2/' cell and the T&' indicates LGT&L. The 2 in

21M=1O''21T28 state may chane to the G2/' cell throuh 'etwor# ssisted 1ell 1hane ('11).

*a. The 2 sends a /outin rea pdate /eDuest (old /&- old P=TM"&- P=TM"& Type- 2 1ore 'etwor#1apability- M" 'etwor# 1apability- P=TM"& "inature- additional P=TM"&A/&- %"&- Boice domain preference

and 2$s usae settin) messae to the new "G"'. The 2 shall set the P=TM"& Type to indicate whether the P=

TM"& is a native P=TM"& or is mapped from a GT&.

&f the 2$s T&' indicates LGT&L and the 2 holds a valid GT& then the 2 indicates the GT& as the old

P=TM"& and old /&. &f the 2$s T&' indicates LP=TM"&L or L/T=related TM"&L and the 2 holds a validP=TM"& and related /& then these two elements are indicated as old P=TM"& and old /&. Mappin a GT& to

a P=TM"& and an /& is specified in T" *3.++3 JCK.

&f the 2 holds a valid P=TM"& and related /& and the old P=TM"& and old /& indicate a P=TM"&A/&

mapped from a GT&- then the 2 indicates these parameters as additional P=TM"&A/&.

The old P=TM"& is indicated in the / /eDuest messae for &u=mode only. 7or Gb mode the T55& is derivedfrom the value that is determined as the old P=TM"& accordin to the rules above. The routin parameter that issinalled in the //1 sinallin to the /'1 for routin to the "G"' is derived from the identifier that is

sinalled as the old P=TM"& accordin to the rules above. 7or a combined MM2A"G"' the /' is confiured toroute the '/&(s) of this combined node to the same combined node. The /' is also confiured to route '/&(s)

of P=TM"&s that are enerated by the 2$s mappin of the GT&s allocated by the combined node. "uch a /'confiuration may also be used for separate nodes to avoid chanin nodes in the pool caused by inter /T

mobility.

&f the 2 has a follow=on reDuest- i.e. if there is pendin uplin# traffic (sinallin or data)- the 3G="G"' may

use- as an implementation option- the follow=on reDuest indication to release or #eep the &u connection after thecompletion of the / update procedure.

%"& is mapped from an e%"& identifyin a % "M2 if the 2 indicates a P=TM"& mapped from GT& in the

information element Lold P=TM"&L. %"& identifies a (1%- &%) pair if the 2 indicates a P=TM"& in the

information element Lold P=TM"&L.


clause ;.3.9.C.

*b. The /'1 shall add the /outin rea &dentity- 1"G access mode- 1"G &8 before forwardin the messae to the

"G"'. This / identity corresponds to the /& in the MM system information sent by the /'1 to the 2. The0"" shall add the 1ell Global &dentity (1G&) of the cell where the 2 is located before passin the messae to

the new "G"'. 1"G &8 is provided by /' if the 2 sends the / /eDuest messae via a 1"G cell or ahybrid cell. 1"G access mode is provided if the 2 sends the / /eDuest messae via a hybrid cell. &f the

1"G access mode is not provided but the 1"G &8 is provided- the "G"' shall consider the cell as a 1"G cell.

7or "&PTO at the 5ocal 'etwor# the with stand=alone G? architecture the /'1 includes the 5ocal @ome

'etwor# &8 in the &nitial 2 Messae and in 8irect Transfer messae if the taret cell is in a 5ocal @ome 'etwor#.

3. The new "; "G"' determines the type of the old node- i.e. MM2 or "G"'- as specified in clause ;.3.,C- usesthe old /& received from the 2 to derive the old MM2 address- and the new "; "G"' sends a 1ontet

/eDuest (P=TM"&- old /&- 'ew "G"' ddress- P=TM"& "inature) messae to the old MM2 to et the contetfor the 2. To validate the 1ontet /eDuest the old MM2 uses a '" to#en mapped from the P=TM"&

"inature. &f the 2 is not #nown in the old MM2- the old MM2 responds with an appropriate error cause. &finterity chec# fails in the old MM2- the old MM2 responds with an appropriate error cause which should

initiate the security functions in the new "; "G"'. &f the security functions authenticate the 2 correctly- thenew "; "G"' shall send a 1ontet /eDuest (&M"&- old /&- 'ew "G"' ddress- 2 Balidated) messae to the

old MM2. 2 Balidated indicates that the new "; "G"' has authenticated the 2. &f the new "; "G"'indicates that it has authenticated the 2 or if the old MM2 authenticates the 2- the old MM2 starts a timer.

&f the 2 with emerency bearers is not authenticated in the old MM2 (in a networ# supportin unauthenticated

2s) the old MM2 continues the procedure with sendin a 1ontet /esponse and startin the timer also when it

cannot validate the 1ontet /eDuest.

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;. The old MM2 responds with a 1ontet /esponse (MM 1ontet- 2P" 0earer 1ontets- "ervin G? sinallinddress and T2&8(s)- M" &nfo 1hane /eportin ction (if available)- 1"G &nformation /eportin ction (if

available)- 2 Time None and &"/ "upported) messae. The MM contet contains security related informationas well as other parameters (includin &M"&) as described in clause 9.<.* (&nformation "torae for MM2). The

P8' G? ddress and T2&8(s) (for GTP=based "9A">) or G/2 %eys (PM&P=based "9A">) for uplin# traffic andcontrol plane- and the T&(s) is part of the 2P" 0earer contet(s). The unused uthentication Euintets in the MM

1ontet may be sent if stored by the MM2 and if the MM2 received the unused uthentication Euintets fromthe same "G"' previously.

&f the 2 receives only emerency bearer services from the old MM2 and the 2 is &11less- &M"& can not beincluded in the 1ontet /esponse. 7or emerency attached 2s- if the &M"& cannot be authenticated- then the

&M"& shall be mar#ed as unauthenticated. lso- in this case- security parameters are included only if available.

&"/ "upported is indicated if the old MM2 and associated "ervin G? are capable to activate &"/ for the 2.

The new "G"' shall inore the 2 1ore 'etwor# 1apability in the MM 1ontet of the 1ontet /esponse onlywhen it has previously received an 2 1ore 'etwor# 1apability in the /outin rea /eDuest. &f 2 is not

#nown in the old MM2- the old MM2 responds with a appropriate error cause.

The new "G"' maps the 2P" bearers to P8P contets ,=to=, and maps the 2P" 0earer Eo" parameter values of

an 2P" bearer to the /elease CC Eo" parameter values of a bearer contet as defined in nne 2. The P8P

contet(s) are established in the indicated order. The "G"' deactivates the P8P contets which cannot beestablished.


MM2 shall include the 5ocal @ome 'etwor# &8 of the old cell in the 2P" 0earer contet correspondin to the"&PTO at the 5ocal 'etwor# P8' connection.

9. "ecurity functions may be eecuted. Procedures are defined in clause 9.3.,+ on L"ecurity 7unctionL.

7or onoin emerency services only- if the new "G"' is confiured to support emerency bearer services in

limited service state- it may s#ip the authentication procedure or proceed even if authentication fails. &f the new"G"' does not support emerency bearer services in limited service state- then it rejects the / reDuest with

an appropriate reject cause.

:. The new "G"' determines to relocate the "ervin G?. The "ervin G? is relocated when the old "ervin G?

cannot continue to serve the 2. The new "G"' may also decide to relocate the "ervin G? if a new "ervinG? is epected to serve the 2 loner andAor with a more optimal 2 to P8' G? path- or if a new "ervin

G? can be co=located with the P8' G?. "election of a new "ervin G? is performed accordin toclause ;.3.>.* on L"ervin G? selection functionL.

The new "G"' sends a 1ontet c#nowlede ("ervin G? chane indication) messae to the old MM2."ervin G? chane indication indicates a new "ervin G? has been selected. The old MM2 mar#s in its

contet that the information in the G?s is invalid. This ensures that the old MM2 updates the G?s if the 2initiates a T procedure bac# to the old MM2 before completin the onoin / procedure.

'OT2 3H pdatin the G?s refers to deletion of session(s) on the "ervin G? followed by re=creation of

session(s) on the "ervin G?. The re=creation of session(s) on the "ervin G? will result in successful

re=establishment of the "9A"> tunnel between the selected "ervin G? and the P8' G?.

The old MM2 deletes all bearer resources of the 2 when the timer started in step 3 epires.

&f the security functions do not authenticate the 2 correctly- then the / is rejected- and the new "; "G"'sends a reject indication to the old MM2. The MM2 shall continue as if the &dentification and 1ontet /eDuest

was never received.

<. &n this procedure flow the "ervin G? is relocated. The "G"' sends a 1reate "ession /eDuest (&M"&- bearercontets- "G"' ddress and T2&8 for the control plane- /T Type- Type- the Protocol Type over "9A">-

"ervin 'etwor#- 2 Time None- etc) messae per P8' connection to the selected new "ervin G?. The P8'

G? address is indicated in the bearer contets. Type indicates to the "ervin G? to send the Modify 0earer/eDuest to the P8' G?. The Protocol Type over "9A"> is provided to "ervin G? which protocol should be

used over "9A"> interface. /T type indicates a chane in radio access. &f the P8' G? reDuested 2$s locationandAor ser 1"G information- the "G"' also includes the ser 5ocation &nformation &2 andAor ser 1"G

&nformation &2 in this messae.

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'OT2 ;H The ser 1"G &nformation &2 is not sent in step < if the Lfollow=on reDuest indicationL indicates releasinthe &u connection after the completion of the / update procedure.

>. The new "ervin G? sends the messae Modify 0earer /eDuest ("ervin G? ddress- "ervin G? T2&8-/T type- "ervin 'etwor#) per P8' connection to the P8' G? concerned. ser 5ocation &nformation &2

andAor 2 Time None &2 andAor ser 1"G &nformation &2 are also included if they are present in step <.

C. &f dynamic P11 is deployed- and /T type information or 2 location information or 2 Time None needs to be conveyed from the P8' G? to the P1/7- then the P8' G? shall send this information to the P1/7 by

means of an &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K.

'OT2 9H The P8' G? does not need to wait for the P1/7 response- but continues in the net step. &f the P1/7response leads to an 2P" bearer modification the P8' G? should initiate a bearer update procedure.

,+. The P8' G? updates its contet field and returns a Modify 0earer /esponse (1harin &d- M"&"8') messaeto the "ervin G?. The M"&"8' is included if the P8' G? has it stored in its 2 contet.

&f the "ervin G? is relocated- the P8' G? shall send one or more Lend mar#erL pac#ets on the old path

immediately after switchin the path. &f the source "ervin G? has no downlin# user plane established- the"ervin G? shall discard the Lend mar#erL received from the P8' G? and shall not send 8ownlin# 8ata

'otification. Otherwise the "ervin G? shall forward the Lend mar#erL pac#ets to the source e'ode0.

,,. The new "ervin G? updates its bearer contet. This allows the "ervin G? to route 0earer P8s to the P8'G? when received from /'1. The new "ervin G? returns a 1reate "ession /esponse ("ervin G? address

and T2&8- P8' G? ddress and T2&8s (for GTP=based "9A">) or G/2 #eys (for PM&P=based "9A">) at theP8' G?(s) for uplin# traffic) messae to the "G"'.

,*. The new "G"' verifies whether it holds subscription data for the 2 identified by the P=TM"&- the additionalP=TM"&A/& or by the &M"& received with the contet data from the old 1' node.

The additional P=TM"&A/& allows the new "G"' to find any already eistin 2 contet stored in the new"G"'. &f there are no subscription data in the new "G"' for this 2- or for some networ# sharin scenario (e..

G?1') if the P5M'=&8 of the /& supplied by the /'1 is different from that of the /& in the 2$s contet-then the new "G"' informs the @"" of the chane of "G"' by sendin an pdate 5ocation ("G"' 'umber-

"G"' ddress- &M"&- @omoenous "upport of &M" Boice over P" "ession- 2 "/B11 capability- eDuivalentP5M' list) messae to the @"". 7or L@omoenous "upport of &M" Boice over P" "essionsL- see clause 9.3.>

of T" *3.+:+ J<K. The inclusion of the eDuivalent P5M' list indicates that the "G"' supports the inter=P5M'handover to a 1"G cell in an eDuivalent P5M' usin the subscription information of the taret P5M'.

&f the 2 initiates the / procedure in a BP5M' supportin utonomous 1"G /oamin and the @P5M' hasenabled utonomous 1"G /oamin in the BP5M' (via "ervice 5evel reement) and the "G"' needs to

retrieve the 1"G subscription information of the 2 from the 1""- the "G"' initiates the pdate 1"G 5ocationProcedure with 1"" as described in clause 9.3.,*.

,3. The @"" sends a 1ancel 5ocation (&M"&- 1ancellation Type) messae to the old "G"' with the 1ancellationType set to pdate Procedure.

?hen receivin the 1ancel 5ocation messae the old "G"' removes all the 2 contets. The old "G"'ac#nowledes with a 1ancel 5ocation c# (&M"&) messae.

,;. ?hen receivin the 1ontet c#nowlede messae from the new "; "G"' and if the old MM2 has an ",=MM2 association for the 2- the source MM2 sends a ",= /elease 1ommand to the source e'ode0 after the

timer started in step3 has epired. The //1 connection is released by the source e'ode0. The source e'ode0confirms the release of the //1 connection and of the ",= connection by sendin a ",= /elease 1omplete

messae to the source MM2.

,9. The @"" ac#nowledes the pdate 5ocation messae by sendin an pdate 5ocation c# (&M"&- "ubscription

8ata) to the new "G"'. &f the pdate 5ocation is rejected by the @""- the new "G"' rejects the / /eDuestfrom the 2 with an appropriate cause. &n such cases- the "G"' releases any local "G"' 2P" 0earer contets

for this particular 2- and additionally deletes the 2P" bearer resources in the new "ervin G? by sendin the8elete "ession /eDuest (1ause- Operation &ndication) messaes to the new "ervin G?. The Operation

&ndication fla shall not be set. Therefore- the new "ervin G? receivin this reDuest shall not initiate a delete procedure towards the P8' G?.

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The new "G"' validates the 2$s presence in the (new) /. &f due to reional subscription restrictions or accessrestrictions (e.. 1"G restrictions) the 2 is not allowed to be attached in the /- the "G"' rejects the /outin

rea pdate /eDuest with an appropriate cause to the 2 and notifies the @"" of the rejection. The "ubscription8ata may contain the 1"G subscription data for the reistered P5M' and for the eDuivalent P5M' list

reDuested by "G"' in step ,*.

&f the 2 initiates the / procedure at a 1"G cell- the new "; "G"' shall chec# whether the 1"G &8 andassociated P5M' is contained in the 1"G subscription and is not epired. &f the 1"G &8 and associated P5M'is not present or epired- the "; "G"' shall send a / reject messae to the 2 with an appropriate cause

value. The 2 shall remove the 1"G &8 and associated P5M' from its llowed 1"G list if present.

,:. ?hen the timer started in step 3 epires and the old MM2 received the "ervin G? chane indication in the

1ontet c#nowlede messae- the old MM2 deletes the 2P" bearer resources by sendin 8elete "ession/eDuest (1ause- Operation &ndication) messaes to the old "ervin G?. The operation &ndication fla is not set-

that indicates to the old "ervin G? that the old "ervin G? shall not initiate a delete procedure towards theP8' G?. &f &"/ is activated the cause indicates to the old "=G? that the old "=G? shall delete the bearer

resources on the other old 1' node by sendin 8elete 0earer /eDuest messae(s) to that 1' node.

,<. The old "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messaes. The old "ervin G?

discards any pac#ets buffered for the 2.

,>. &f due to reional subscription restrictions or access restrictions the 2 is not allowed to access the /H

= 7or 2s with onoin emerency bearer services- the new "G"' accept the /outin rea pdate /eDuest anddeactivates the non=emerency P8P contets as specified in clause C.*.;.* of T" *3.+:+ J<K. &f the /outin rea

pdate procedure is initiated in PMM=&852A"T'80 state- all non=emerency P8P 1ontets are deactivated by the /outin rea pdate procedure without P8P 1ontet deactivation sinallin between the 2 and the

"G"'.

= 7or all other cases- the new "G"' rejects /outin rea pdate /eDuest with an appropriate cause to the 2 and

notifies the @"" of rejection (details of this notification is specified in stae 3).

The new "G"' responds to the 2 with a /outin rea pdate ccept (P=TM"&- P=TM"& "inature-2merency "ervice "upport indicator) messae. The 2merency "ervice "upport indicator informs the 2 that

2merency bearer services are supported over T/'.

7or an "=G? chane &"/ ctivated is never indicated by the "G"' to the 2 as it needs a T with the same"=G? first to activate &"/. 7or an "G"' chane &"/ is not activated by the new "G"' to avoid contet transfer

procedures with two old 1' nodes.

?hen receivin the / ccept messae- as there is no &"/ ctivated indication- the 2 shall set its T&' to

LP=TM"&L.

&f the / procedure is initiated by manual 1"G selection and occurs via a 1"G cell- the 2 upon receivin the

/ ccept messae shall add the 1"G &8 and associated P5M' to its llowed 1"G list if it is not already present. Manual 1"G selection is not supported if the 2 has emerency bearers established.

&f the user plane setup is performed in conjunction with the / ccept messae and the / is performed viaa hybrid cell- then the "G"' shall send an indication whether the 2 is a 1"G member to the /' alon with

the /'P messae. 0ased on this information the /' may perform differentiated treatment for 1"G andnon=1"G members.

'OT2 :H &f the 2 receives a / ccept messae via a hybrid cell- the 2 does not add the correspondin 1"G&8 and associated P5M' to its llowed 1"G list. ddin a 1"G &8 and associated P5M' to the 2$s

local llowed 1"G list for a hybrid cell is performed only by OT or OM 8M procedures.

'OT2 <H ?hen &"/ ctivated is indicated and the 2$s T&' indicates LP=TM"&L the T&' is not chaned. ?hen

&"/ ctivated is indicated and the 2$s T&' indicates LGT&L or L/T=related TM"&L the 2 shall setits T&' to L/T=related TM"&L.

,C. &f the P=TM"& was included in the / ccept messae- the 2 ac#nowledes the new P=TM"& by returnin a

/outin rea pdate 1omplete messae to the "G"'.

*+. 7or &u=mode- if the 2 has uplin# data or sinallin pendin it shall send a "ervice /eDuest (P=TM"&- 1%"'-"ervice Type) messae to the new "G"'. &f a P=TM"& was allocated in step ,>- that P=TM"& is the one included

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in this messae. "ervice Type specifies the reDuested service. "ervice Type shall indicate one of the followinH8ata or "inallin.

*,. &f the 2 has sent the "ervice /eDuest- the new 3G "G"' reDuests the /'1 to establish a radio access bearer bysendin a /0 ssinment /eDuest (/0 &8(s)- Eo" Profile(s)- GTP "'8s- GTP "'s- P81P "'s)

messae to the /'1. &f 8irect Tunnel is established the "G"' provides to the /'1 the "ervin G?$s ddress

for ser Plane and T2&8 for uplin# data.

**. &f the "G"' established 8irect Tunnel in step *,) it shall send Modify 0earer /eDuest to the "ervin G? and

include the /'1$s ddress for ser Plane and downlin# T2&8 for data. The "ervin G? updates the ddress

for ser Plane and T2&8 for downlin# data and return a Modify 0earer /esponse.

'OT2 >H 2P" does not support any 1M25 procedures.

&n the case of a rejected routin area update operation- due to reional subscription- roamin restrictions- accessrestrictions (see T" *3.**, J*<K and T" *3.++> J*>K) or because the "G"' cannot determine the @5/ address to

establish the locatin updatin dialoue- the new "G"' should not construct an MM contet. &n the case of receivinthe subscriber data from @5/- the new "G"' may construct an MM contet and store the subscriber data for the 2 to

optimi!e sinallin between the "G"' and the @"". reject shall be returned to the 2 with an appropriate cause andthe P" sinallin connection shall be released. pon return to idle- the 2 shall act accordin to T" *3.,** J,+K.

&f the new "G"' is unable to update the bearer contet in one or more P=G?s- the new "G"' shall deactivate thecorrespondin bearer contets as described in clause L"G"'=initiated P8P 1ontet 8eactivation ProcedureL of

T" *3.+:+ J<K. This shall not cause the "G"' to reject the routin area update.

The new "G"' shall determine the Maimum P' restriction based on the received P' /estriction of each bearer


The P8P contets shall be prioriti!ed by the new "G"'. &f the new "G"' is unable to support the same number of

active P8P contets as received from old MM2- the prioritisation is used to decide which P8P contets to maintainactive and which ones to delete. &n any case- the new "G"' shall first update all P8P contets in one or more P=G?s

and then deactivate the P8P contet(s) that it cannot maintain as described in clause L"G"'=initiated P8P 1ontet

8eactivation ProcedureL of T" *3.+:+ J<K. This shall not cause the "G"' to reject the routin area update.

&f the routin area update procedure fails a maimum allowable number of times- or if the "G"' returns a /outin reapdate /eject (1ause) messae- the M" shall enter &852 state.

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!.3.4 Ser5ice ReDuest %r"ce#ures

!.3.4.1 UE triggere# Ser5ice ReDuest

MME Ser5i'g GA P* GA

2. *&S Ser5ice Re uest

1. *&S Ser5ice ReDuest

. S1-&P :'itia$ +"'te/t Setu% +"6%$ete

3. &uthe'ticati"'Securit;

7SS

4. S1-&P :'itia$ +"'te/t Setu% ReDuest

!. Ra#i" Cearer Esta$ish6e't

. U%$i'B ata



UE e*"#eC


P+R

(A)



0i1ure +'3''%$%2 ! tri11ered Service Re:uest procedure

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps C and ,, concern GTP=

based "9A">.

,. The 2 sends '" messae "ervice /eDuest towards the MM2 encapsulated in an //1 messae to the

e'ode0. The //1 messae(s) that can be used to carry the "=TM"& and this '" messae are described inT" 3:.3++ J9K.

*. The e'ode0 forwards '" messae to MM2. '" messae is encapsulated in an ",=PH &nitial 2 Messae('" messae- T&S21G& of the servin cell- "=TM"&- 1"G &8- 1"G access Mode). 8etails of this step are

described in T" 3:.3++ J9K. &f the MM2 can$t handle the "ervice /eDuest it will reject it. 1"G &8 is provided if

the 2 sends the "ervice /eDuest messae via a 1"G cell or a hybrid cell. 1"G access mode is provided if the

2 sends the "ervice /eDuest messae via a hybrid cell. &f the 1"G access mode is not provided but the 1"G &8is provided- the MM2 shall consider the cell as a 1"G cell.

&f a 1"G &8 is indicated and 1"G access mode is not provided- and there is no subscription data for this 1"G &8and associated P5M' or the 1"G subscription is epired- the MM2 rejects the "ervice /eDuest with an

appropriate cause. The 2 shall remove the 1"G &8 and associated P5M' of the cell where the 2 has initiatedthe service reDuest procedure from the llowed 1"G list- if present.

7or 2s with emerency 2P" bearers- i.e. at least one 2P" bearer has an /P value reserved for emerencyservices- if 1"G access restrictions do not allow the 2 to et normal services the MM2 shall deactivate all non=

emerency bearers and accept the "ervice /eDuest.

&f 5&P is active for a P8' connection and if the cell accessed by the 2 does not lin# to the 5=G? where the

2 inititiated the 5&P P8' 1onnection- the MM2 shall not reDuest the establishment of the bearers of the5&P P8' connection from the e'ode0 in step ; and shall reDuest disconnection of the 5&P P8' connection

accordin to clause 9.,+.3. &f the 2 has no other P8' connection then the MM2 shall reject the "ervice/eDuest with an appropriate cause value resultin in the 2 detachin- s#ip the followin steps of the procedure

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and initiate the release of the core networ# resources with the implicit MM2=initiated 8etach procedureaccordin to clause 9.3.>.3.

3. '" authenticationAsecurity procedures as defined in clause 9.3.,+ on L"ecurity functionL may be performed.

;. The MM2 sends ",=P &nitial 1ontet "etup /eDuest ("ervin G? address- ",=T2&8(s) (5)- 2P" 0earer

Eo"(s)- "ecurity 1ontet- MM2 "inallin 1onnection &d- @andover /estriction 5ist- 1"G Membership

&ndication- /' assistance data- 1' assistance data) messae to the e'ode0. &f there is a P8' connectionestablished for 5ocal &P ccess- this messae includes a 1orrelation &8 for enablin the direct user plane path

between the @e'0 and the 5=G?. &f there is a P8' connection established for "&PTO at the 5ocal 'etwor#

with 5=G? function collocated with the (@)e'0- this messae includes a "&PTO 1orrelation &8 for enablin thedirect user plane path between the (@)e'0 and the 5=G?. This step activates the radio and ", bearers for all the

active 2P" 0earers. The e'ode0 stores the "ecurity 1ontet- MM2 "inallin 1onnection &d- 2P" 0earerEo"(s) and ",=T2&8(s) in the 2 /' contet. The step is described in detail in T" 3:.3++ J9K. @andover

/estriction 5ist is described in clause ;.3.9.< LMobility /estrictionsL. The /' assistance data and 1'assistance data parameters are further described in T" 3:.;,3 J3:K.

'OT2 *H &n this release of the 3GPP specification the 1orrelation &8 and "&PTO 1orrelation &8 is set eDual to theuser plane P8' G? T2&8 (GTP=based "9) or G/2 #ey (PM&P=based "9) which is specified in

clause 9.3.*., and clause 9.,+.*.

The MM2 shall only reDuest to establish 2merency 2P" 0earer if the 2 is not allowed to access the cellwhere the 2 initiated the service reDuest procedure due to 1"G access restriction.

&f the "ervice /eDuest is performed via a hybrid cell- 1"G Membership &ndication indicatin whether the 2 is a

1"G member shall be included in the ",=P messae from the MM2 to the /'. 0ased on this information the/' can perform differentiated treatment for 1"G and non=1"G members.

9. The e'ode0 performs the radio bearer establishment procedure. The user plane security is established at thisstep- which is described in detail in T" 3:.3++ J9K. ?hen the user plane radio bearers are setup. 2P" bearer state

synchroni!ation is performed between the 2 and the networ#- i.e. the 2 shall locally remove any 2P" bearerfor which no radio bearers are setup and- if the radio bearer for a default 2P" bearer is not established- the 2

shall locally deactivate all 2P" bearers associated to that default 2P" bearer.

:. The uplin# data from the 2 can now be forwarded by e'ode0 to the "ervin G?. The e'ode0 sends the

uplin# data to the "ervin G? address and T2&8 provided in the step ;. The "ervin G? forwards the uplin#data to the P8' G?.

<. The e'ode0 sends an ",=P messae &nitial 1ontet "etup 1omplete (e'ode0 address- 5ist of accepted 2P" bearers- 5ist of rejected 2P" bearers- ", T2&8(s) (85)) to the MM2. This step is described in detail in

T" 3:.3++ J9K. &f the 1orrelation &8 or "&PTO 1orrelation &8 is included in step ;- the e'ode0 shall use theincluded information to establish a direct user plane path to the 5=G? and forward uplin# data for 5ocal &P

ccess or "&PTO at the 5ocal 'etwor# with 5=G? function collocated with the (@)e'0 accordinly.

>. The MM2 sends a Modify 0earer /eDuest messae (e'ode0 address- ", T2&8(s) (85) for the accepted 2P"

bearers- 8elay 8ownlin# Pac#et 'otification /eDuest- /T Type) per P8' connection to the "ervin G?. &f

the "ervin G? supports Modify ccess 0earers /eDuest procedure and if there is no need for the "ervin G?

to send the sinallin to the PG?- the MM2 may send Modify ccess 0earers /eDuest (e'ode0 address(es) andT2&8s for downlin# user plane for the accepted 2P" bearers- 8elay 8ownlin# Pac#et 'otification /eDuest) per

2 to the "ervin G? to optimi!e the sinallin. The "ervin G? is now able to transmit downlin# datatowards the 2. The usae of the 8elay 8ownlin# Pac#et 'otification /eDuest &nformation 2lement is specified

in clause 9.3.;.* below. &f the P8' G? reDuested 2$s location andAor ser 1"G information and the 2$slocation andAor ser 1"G information has chaned- the MM2 also includes the ser 5ocation &nformation &2

andAor ser 1"G &nformation &2 in this messae. &f &"/ is activated or if the "ervin 'etwor# &2 has chanedcompared to the last reported "ervin 'etwor# &2 then the MM2 also includes the "ervin 'etwor# &2 in this

messae. &f the 2 Time None has chaned compared to the last reported 2 Time None then the MM2 shallinclude the 2 Time None &2 in this messae.

&f a default 2P" bearer is not accepted by the e'ode0- all the 2P" bearers associated to that default bearer shall be treated as non=accepted bearers. The MM2 releases the non=accepted bearers by trierin the bearer release

procedure as specified in clause 9.;.;.*. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the"ervin G? drops the 85 pac#et and does not send a 8ownlin# 8ata 'otification to the MM2.

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C. &f the /T Type has chaned compared to the last reported /T Type or if the 2$s 5ocation andAor &nfo &2sandAor 2 Time None andAor if &"/ is not activated and "ervin 'etwor# id are present in step >- the "ervin

G? shall send the Modify 0earer /eDuest messae (/T Type) per P8' connection to the P8' G?. ser5ocation &nformation &2 andAor ser 1"G &nformation &2 andAor "ervin 'etwor# &2 andAor 2 Time None are

also included if they are present in step >.

&f the Modify 0earer /eDuest messae is not sent because of above reasons and the P8' G? charin is paused- then the "G? shall send a Modify 0earer /eDuest messae with P8' 1harin Pause "top &ndicationto inform the P8' G? that the charin is no loner paused. Other &2s are not included in this messae.

,+. &f dynamic P11 is deployed- the P8' G? interacts with the P1/7 to et the P11 rule(s) accordin to the /TType by means of a P127 initiated &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K. &f

dynamic P11 is not deployed- the P8' G? may apply local Eo" policy.

,,. The P8' G? sends the Modify 0earer /esponse to the "ervin G?.

,*. The "ervin G? shall return a Modify 0earer /esponse ("ervin G? address and T2&8 for uplin# traffic) tothe MM2 as a response to a Modify 0earer /eDuest messae- or a Modify ccess 0earers /esponse ("ervin

G? address and T2&8 for uplin# traffic) as a response to a Modify ccess 0earers /eDuest messae. &f the"ervin G? cannot serve the MM2 /eDuest in the Modify ccess 0earers /eDuest messae without "9A">

sinallin other than to unpause charin in the P8' G? or without correspondin Gc sinallin when PM&Pis used over the "9A"> interface- it shall respond to the MM2 with indicatin that the modifications are notlimited to ",= bearers- and the MM2 shall repeat its reDuest usin a Modify 0earer /eDuest messae per P8'

connection.

&f "&PTO at the 5ocal 'etwor# is active for a P8' connection with stand=alone G? deployment and the 5ocal@ome 'etwor# &8 for stand=alone accessed by the 2 differs from the 5ocal @ome 'etwor# &8 where the 2

initiated the "&PTO5' P8' 1onnection- the MM2 shall reDuest disconnection of the "&PTO at the localnetwor# P8' connection(s) with the Lreactivation reDuestedL cause value accordin to clause 9.,+.3. &f the 2

has no other P8' connection- the MM2 initiated Leplicit detach with reattach reDuiredL procedure accordin toclause 9.3.>.3.

&f "&PTO at the 5ocal 'etwor# is active for a P8' connection with collocated 5G? deployement and the 5=G?

1' address of the cell accessed by the 2 differs from the 5=G? 1' address of the cell where the 2 initiatedthe "&PTO at the 5ocal 'etwor# P8' 1onnection- the MM2 shall reDuest disconnection of the "&PTO at the

local networ# P8' connection(s) with the Lreactivation reDuestedL cause value accordin to clause 9.,+.3. &f the2 has no other P8' connection- the MM2 initiated Leplicit detach with reattach reDuiredL procedure

accordin to clause 9.3.>.3.

!.3.4.2 7a'#$i'g " a'"r6a$ c"'#iti"'s i' UE triggere# Ser5ice ReDuest

nder certain conditions- the current 2 triered "ervice /eDuest procedure can cause unnecessary 8ownlin# Pac#et 'otification messaes which increase the load of the MM2.

This can occur when uplin# data sent in step : causes a response on the downlin# which arrives at the "ervin G?

before the Modify 0earer /eDuest messae- step >. This data cannot be forwarded from the "ervin G? to the e'ode0

and hence it triers a 8ownlin# 8ata 'otification messae.

&f the MM2 receives a 8ownlin# 8ata 'otification after step * and before step C- the MM2 shall not send ", interface

pain messaes. @owever- across all the 2s on that MM2- the MM2 shall monitor the rate at which these eventsoccur. &f the rate becomes sinificant (as confiured by the operator) and the MM2$s load eceeds an operator

confiured value- the MM2 shall indicate L8elay 8ownlin# Pac#et 'otification /eDuestL with parameter 8 to the"ervin Gateway- where 8 is the reDuested delay iven as an inteer multiple of 9+ ms- or !ero. The "ervin G? then

uses this delay in between receivin downlin# data and sendin the 8ownlin# 8ata 'otification messae.

'OT2 ,H low rate of reception of 8ownlin# 8ata 'otifications between steps * and C should be considered a

normal circumstance- e.. due to the chance that a 2 Terminatin callAsession is initiated at rouhly thesame time as the 2 triered "ervice /eDuest procedure.

'OT2 *H &t is recommended that this rate is determined over :+ second periods.

The MM2 shall use the step > Modify ccess 0earers /eDuest or Modify 0earer /eDuest of the 2 initiated "ervice

/eDuest procedure to indicate L8elay 8ownlin# Pac#et 'otification /eDuestL to the "ervin G?.

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To determine the amount of delay reDuested by a iven MM2- the "ervin G? either uses the last Modify ccess0earers /eDuest or Modify 0earer /eDuest messae which is part of a "ervice /eDuest procedure- or- just uses one of

the "ervice /eDuest procedure$s Modify ccess 0earers /eDuest or Modify 0earer /eDuest messaes received withinthe precedin 3+ seconds. The latter mode of operation shall be ta#en into account when implementin the MM2.

The MM2 is responsible for settin the value of 8. The eact alorithm for settin the value is implementation

dependent- two eamples are iven below to serve as a uidelineH

2FMP52 ,H The MM2 adaptively increases the value of 8 when the rate of unnecessary 8ownlin# 8ata

'otifications is too hihI and correspondinly it decreases the value when the rate is not too hih.

2FMP52 *H ?hen unnecessary 8ownlin# 8ata 'otifications arrive- the MM2 measures the averae time fromthe reception of the unnecessary 8ownlin# 8ata 'otification to the reception of the Modify

ccess 0earers /eDuest or Modify 0earer /esponse from the "ervin G? in the same 2triered "ervice /eDuest Procedure. The value of 8 is calculated from this averae- by addin a

safety marin.

'ormally- upon receipt of a downlin# data pac#et for which there is no 85=T2&8 of the ", user plane tunnel- the "=G?

shall send the 8ownlin# 8ata 'otification messae to the MM2 without delay.

&f the "=G? determines from the last Modify ccess 0earers /eDuest or Modify 0earer /eDuest messae which is partof a "ervice /eDuest procedure that a iven MM2 reDuest delayin of the 8ownlin# Pac#et 'otification by a delay of8- it shall (only for 2s of that MM2) buffer the 8ownlin# 8ata for a period 8. &f the 85=T2&8 and e'ode0 address

for the 2 is received before the epiry of the timer- the timer shall be cancelled and the 'etwor# triered "ervice/eDuest procedure is finished without sendin the 8ownlin# 8ata 'otification messae to the MM2- i.e. 85 data are

sent to the 2. Otherwise the 8ownlin# 8ata 'otification messae is sent to the MM2 when the timer epires.

'OT2 3H The above procedure and indicated time values are intended to ensure that the procedure is LstableLI

avoids /' impactsI and- that the neative impacts of shortenin the 8/F interval on 2 battery life areavoided.

!.3.4.3 *et"rB Triggere# Ser5ice ReDuest

1. "'$i'B ata

2a. "'$i'B ata *"tiicati"'

MME S-GA P* GA

3a. Pagi'g

4. Pagi'g

!. Ser5ice ReDuest Pr"ce#ure

UE R*+CS+


e*"#eC SGS*

2. "'$i'B ata *"tiicati"' &cB

2. "'$i'B ata *"tiicati"' &cB

3. Pagi'g

"'$i'B ata E-UTR&*

a. St"% Pagi'g

. St"% Pagi'g

4a. Pagi'g

"'$i'B ata 3G T

"'$i'B ata 2G "r 3G '"' T

0i1ure +'3''3$%2 "et#ork tri11ered Service Re:uest procedure

&f the MM2 needs to sinal with the 2 that is in 21M=&852 state- e.. to perform the MM2A@""=initiated detach

procedure for the 21M=&852 mode 2 or the "=G? receives control sinallin (e.. 1reate 0earer /eDuest or pdate

0earer /eDuest)- the MM2 starts networ# triered service reDuest procedure from step 3a in the 'etwor# Triered"ervice reDuest procedure.

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&f &"/ is activated- when the "ervin G? receives a 1reate 0earer /eDuest or pdate 0earer /eDuest for a 2- and the"=G? does not have a downlin# ",= and the "G"' has notified the "ervin G? that the 2 has moved to PMM=

&852 or "T'80 state- the "ervin G? buffers sinallin messaes and sends a 8ownlin# 8ata 'otification totrier the MM2 and "G"' to pae the 2. &f the "ervin G?- while waitin for the user plane to be established- is

triered to send a second 8ownlin# 8ata 'otification with hiher priority (i.e. /P) than the first 8ownlin# 8ata 'otification was sent with- the "ervin G? sends a new 8ownlin# 8ata 'otification messae indicatin the hiher

priority to the MM2. &f the "ervin G? receives additional downlin# sinallin messaes for a bearer with same orlower priority than the first 8ownlin# 8ata 'otification was sent for or if the "ervin G? has sent the second

8ownlin# 8ata 'otification messae indicatin the hiher priority and receives additional downlin# sinallinmessaes for this 2- the "ervin G? buffers these downlin# sinallin messaes and does not send a new 8ownlin#

8ata 'otification. The "=G? will be notified about the current /T type based on the 2 triered service reDuest procedure. The "=G? will o on eecutin the dedicated bearer activation or dedicated bearer modification procedure-

i.e. send the correspondin buffered sinallin to MM2 or "G"' which 2 resides in now and inform the current /Ttype to the P8' G? if the /T type has been chaned compared to the last reported /T Type. &f dynamic P11 is

deployed- the current /T type information shall also be conveyed from the P8' G? to the P1/7. &f the P1/7

response leads to an 2P" bearer modification the P8' G? should initiate a bearer update procedure as specified inclause 9.;.*., below.

?hen the "ervin G? sends a 8ownlin# 8ata 'otification- it shall include both 2P" 0earer &8 and /P. &f the

8ownlin# 8ata 'otification is triered by the arrival of downlin# data pac#ets at the "ervin G?- the "ervin G?shall include the 2P" 0earer &8 and /P associated with the bearer on which the downlin# data pac#et was received. &f

the 8ownlin# 8ata 'otification is triered by the arrival of control sinallin- the "ervin G? shall include the 2P"0earer &8 and /P if present in the control sinallin. &f the /P is not present in the control sinallin- the "ervin

G? shall include the /P in the stored 2P" bearer contet.

&f a 5&P P8' connection eists- when the 5=G? receives the downlin# data for a 2 that is in 21M=&852 state- the

5=G? sends the first downlin# user pac#et to "ervin G? and buffers all other downlin# user pac#ets. The "ervinG? will trier the MM2 to pae the 2.

,. ?hen the "ervin G? receives a downlin# data pac#et for a 2 #nown as not user plane connected (i.e. the"=G? contet data indicates no downlin# user plane T2&8)- it buffers the downlin# data pac#et and identifies

which MM2 or "G"' is servin that 2.

&f that MM2 has reDuested the "ervin G? to throttle downlin# low priority traffic and if the downlin# data pac#et is received on a low priority bearer to be throttled (see clause ;.3.<.;.,a)- the "G? drops the downlin#data. The steps below are not eecuted.

&f that MM2 has reDuested the "=G? to delay sendin the 8ownlin# 8ata 'otification (see clause 9.3.;.* on

L@andlin of abnormal conditions in 2 triered "ervice /eDuestL)- the "ervin G? buffers the downlin# dataand waits until the timer epires before continuin with step *. &f the 85=T2&8 and e'ode0 address for that 2

is received before the epiry of the timer- the timer shall be cancelled and the 'etwor# triered "ervice /eDuest

procedure is finished without eecutin the steps below- i.e. 85 data are sent to the 2.

&f the "ervin G? receives additional downlin# data pac#ets for this 2 before the epiry of the timer- the

"ervin G? does not restart this timer.

*. The "ervin G? sends a 8ownlin# 8ata 'otification messae to the MM2 and "G"' nodes for which it hascontrol plane connectivity for the iven 2. The /P and 2P" 0earer &8 are always set in 8ownlin# 8ata 'otification. The MM2 and "G"' respond to the "=G? with a 8ownlin# 8ata 'otification c# messae. The

priority indicator- i.e. /P is derived from the bearer trierin the 8ownlin# 8ata 'otification.

'OT2 ,H The /P and 2P" 0earer &8 are sent to the "G"' as well as MM2- but the usae of these parameters at

"G"' is not specified in this release of the specification.

&f the "ervin G?- while waitin for the user plane to be established- is triered to send a second 8ownlin#

8ata 'otification for a bearer with hiher priority (i.e. /P) than the first 8ownlin# 8ata 'otification was sentfor- the "G? sends a new 8ownlin# 8ata 'otification messae indicatin the hiher priority to the MM2. &f the

"ervin G? receives additional downlin# data pac#ets for a bearer with same or lower priority than the first8ownlin# 8ata 'otification was sent for or if the "ervin G? has sent the second 8ownlin# 8ata 'otification

messae indicatin the hiher priority and receives additional downlin# data pac#ets for this 2- the "ervinG? buffers these downlin# data pac#ets and the does not send a new 8ownlin# 8ata 'otification.

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9. ?hen 2 is in the 21M=&852 state- upon reception of pain indication in 2=T/' access- the 2 initiatesthe 2 triered "ervice /eDuest procedure (clause 9.3.;.,). &f the MM2 already has a sinallin connection

over ",=MM2 towards the 2 but the ",= tunnel has not yet been established- then the messaes seDuence performed start from the step when MM2 establishes the bearer(s).

pon reception of pain indication in T/' or G2/' access- the M" shall respond in respective access as

specified T" *;.++> J;<K and the "G"' shall notify the "=G?.

The MM2 andAor "G"' supervises the pain procedure with a timer. &f the MM2 andAor "G"' receives no

response from the 2 to the Pain /eDuest messae- it may repeat the pain. The repetition stratey is

operator dependent. &n the case of pain optimi!ation described in clause ;.3.,3- the pain optimi!ation may be disabled.

&f the MM2 andAor "G"' receives no response from the 2 after this pain repetition procedure- it shall usethe 8ownlin# 8ata 'otification /eject messae to notify the "ervin G? about the pain failure. &n that case-

if &"/ is not activated- the "ervin G? deletes the buffered pac#et(s). &f &"/ is activated and the "ervin G?receives pain failure from both "G"' and MM2- the "ervin G? deletes the buffered pac#et(s) or rejects the

control sinallin which triers the "ervice /eDuest procedure. The "ervin G? may invo#e the procedurePG? Pause of 1harin (clause 9.3.) if 2 is in 21M &852 and the P8' G? has enabled LP8' charin

pauseL feature.

'OT2 9H The "ervin G? may initiate the procedure PG? Pause of 1harin at any time before step 9 if the 2is in 21M &852 and the P8' G? has indicated that the feature is enabled for this P8'. "ee

clause 9.3.:.

:a. &f &"/ is activated and pain response is received in 2=T/' access the "ervin G? sends a L"top PainLmessae to the "G"'.

:b. &f &"/ is activated and pain response is received in T/' or G2/' access the "ervin G? sends a L"topPainL messae to the MM2.

The "ervin G? transmits downlin# data towards the 2 via the /T which performed the "ervice /eDuest procedure.

7or a 5&P P8' connection- after the 2 enters connected mode- the pac#ets buffered in the 5=G? are forwarded to

the @e'0 on the direct path. &f the 2 enters connected mode at a different cell than the one where the 5=G? iscolocated- the MM2 shall deactivate the 5&P P8' connection as defined in clause 9.3.;., step *.

&f the networ# triered service reDuest fails due to no response from the 2- then MM2 andAor "G"' may based onoperator policy initiate the 8edicated 0earer 8eactivation procedure for preserved G0/ bearers. 7or details- see

clause 9.;.;.* for MM2 and T" *3.+:+ J<K for "G"'.

!.3.! S1 re$ease %r"ce#ure

This procedure is used to release the loical ",=P sinallin connection (over ",=MM2) and all ", bearers (in ",=)

for a 2. The procedure will move the 2 from 21M=1O''21T28 to 21M=&852 in both the 2 and MM2- and all2 related contet information is deleted in the e'ode0. ?hen the ",=P sinallin connection is lost- e.. due to loss

of the sinallin transport or because of an e'ode0 or MM2 failure- the ", release procedure is performed locally bythe e'ode0 and by the MM2. ?hen the ", release procedure is performed locally by the e'ode0 or by the MM2 each

node performs locally its actions as described in the procedure flow below without usin or relyin on any of the

sinallin shown directly between e'ode0 and MM2.

The initiation of ", /elease procedure is eitherH

= e'ode0=initiated with cause e.. OQM &ntervention- nspecified 7ailure- ser &nactivity- /epeated //1

sinallin &nterity 1hec# 7ailure- /elease due to 2 enerated sinallin connection release- 1" 7allbac#triered- &nter=/T /edirection- etc. as defined in T" 3:.;,3 J3:KI or

= MM2=initiated with cause e.. authentication failure- detach- not allowed 1"G cell (e.. the 1"G &8 of thecurrently used 1"G cell epires or is removed from the 1"G subscription data)- etc.

0oth e'ode0=initiated and MM2=initiated ", release procedures are shown in 7iure 9.3.9=,.

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1. S1-&P S1 UE +"'te/t Re$ease ReDuest

MME

!. RR+ +"''ecti"' Re$ease

UE e*"#eC Ser5i'g GA

2. Re$ease &ccess Cearers ReDuest

3. Re$ease &ccess Cearers Res%"'se

4. S1-&P S1 UE +"'te/t Re$ease +"66a'#

. S1-&P S1 UE +"'te/t Re$ease +"6%$ete

1. RR+ +"''ecti"' Re$ease

0i1ure +'3'+$%2 S% Release Procedure

,a. &n certain cases the e'ode0 may release the 2$s sinallin connection before or in parallel to reDuestin theMM2 to release the ", contet- e.. the e'ode0 initiates an //1 1onnection /elease for 1" 7allbac# byredirection.

,b. &f the e'ode0 detects a need to release the 2$s sinallin connection and all radio bearers for the 2- thee'ode0 sends an ", 2 1ontet /elease /eDuest (1ause) messae to the MM2. 1ause indicates the reason for

the release (e.. OQM intervention- unspecified failure- user inactivity- repeated interity chec#in failure- orrelease due to 2 enerated sinallin connection release).

'OT2 ,H "tep , is only performed when the e'ode0=initiated ", release procedure is considered. "tep , is not performed and the procedure starts with "tep * when the MM2=initiated ", release procedure is

considered.

*. The MM2 sends a /elease ccess 0earers /eDuest (bnormal /elease of /adio 5in# &ndication) messae to the"=G? that reDuests the release of all ",= bearers for the 2. This messae is triered either by an ", /elease

/eDuest messae from the e'ode0- or by another MM2 event. The bnormal /elease of /adio 5in# &ndicationis included if the ", release procedure is due to an abnormal release of the radio lin#.

3. The "=G? releases all e'ode0 related information (address and T2&8s) for the 2 and responds with a /elease

ccess 0earers /esponse messae to the MM2. Other elements of the 2$s "=G? contet are not affected. The"=G? retains the ",= confiuration that the "=G? allocated for the 2$s bearers. The "=G? starts bufferin

downlin# pac#ets received for the 2 and initiatin the L'etwor# Triered "ervice /eDuestL procedure-described in clause 9.3.;.3- if downlin# pac#ets arrive for the 2.

'OT2 *H 0ased on operator policy any received &ndication of Lbnormal /elease of /adio 5in#L may be used by"ervin G? in subseDuent decisions to trier P8' charin pause if the feature has been enabled on

that P8'.

;. The MM2 releases ", by sendin the ", 2 1ontet /elease 1ommand (1ause) messae to the e'ode0.

9. &f the //1 connection is not already released- the e'ode0 sends a //1 1onnection /elease messae to the 2in c#nowleded Mode. Once the messae is ac#nowleded by the 2- the e'ode0 deletes the 2$s contet.

:. The e'ode0 confirms the ", /elease by returnin an ", 2 1ontet /elease 1omplete (21G&- T&) messae tothe MM2. ?ith this- the sinallin connection between the MM2 and the e'ode0 for that 2 is released. This

step shall be performed promptly after step ;- e.. it shall not be delayed in situations where the 2 does notac#nowlede the //1 1onnection /elease.

The MM2 deletes any e'ode0 related information (Le'ode0 ddress in se for ",=MM2L and Le'0 2 ",P

&8L) from the 2$s MM2 contet- but- retains the rest of the 2$s MM2 contet includin the "=G?$s ",=

confiuration information (address and T2&8s). ll non=G0/ 2P" bearers established for the 2 are preservedin the MM2 and in the "ervin G?.

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The e'ode0 may provide /' assistance data for the net sinallin connection (see T" 3:.;,3 J3:K). TheMM2 should store the /' assistance information in the MM contet for the 2 and should provide it to the

e'ode0- e.. as part of the net "ervice /eDuest procedure or ",=based handover procedure.

&f the cause of ", release is because of ser & inactivity- &nter=/T /edirection- the MM2 shall preserve the

G0/ bearers. &f the cause of ", release is because of 1" 7allbac# triered- further details about bearer handlin

are described in T" *3.*<* J9>K. Otherwise- e.. /adio 1onnection ?ith 2 5ost- ", sinallin connection lost-e'ode0 failure the MM2 shall trier the MM2 &nitiated 8edicated 0earer 8eactivation procedure(clause 9.;.;.*) for the G0/ bearer(s) of the 2 after the ", /elease procedure is completed.

'OT2 3H 2P1 does not support the GP/" preservation feature with settin the M0/ for G0/ bearers to !ero.

&f 5&P is active for a P8' connection- the @e'0 informs the collocated 5=G? by internal sinallin to

releases the direct user plane path to the @e'0. fter the direct user plane path is released- if downlin# pac#etsarrive for the 2- the 5=G? forwards the first pac#et on the "9 tunnel to the "=G? to initiate the L'etwor#

Triered "ervice /eDuestL procedureas described in clause 9.3.;.3.

!.3. V"i#

!.3.&PGA Pause " +hargi'g %r"ce#ure

The PG? Pause of 1harin procedure is optionally supported by the "ervin G? and P8' G? and has the purposeto limit a mismatch between P8' G? and "ervin G? charin volume and pac#et counts. Generally- it aims for the

PG? charin data to more accurately reflect the downlin# traffic actually sent to the 2=T/'.

'OT2 ,H conseDuence of usin this procedure is that P8' G? charin data does not correspond to the volume

that traversed the P8' G?- and it is therefore not possible to count the downlin# pac#ets dropped

between the P8' G? and the 2=T/'.

The "ervin G? may indicate support of this function to the P8' G? when the P8' connection is activated or when

a newAtaret "ervin G? is used for a P8' connection. This is indicated to the P8' G? by a LP8' 1harin Pause"upport &ndicationL in the 1reate "ession /eDuest durin P8' activationAttach and Modify 0earer /eDuest in procedures with chane of "ervin G?.

The P8' G? may indicate if the feature is to be enabled on a per P8' connection basis- if the current "ervin G?supports the feature and the operator$s policy is to enable the feature. This is indicated to the "ervin G? by a LP8'

1harin Pause 2nabledL &ndication in the 1reate "ession /esponse durin P8' activationAttach and Modify 0earer/esponse in procedures with chane of "ervin G?. This is an indication to the "ervin G? that when the criteria for

pause of P8' G? charin are met (as described further down in this section) the P8' G? charin can be paused.

'OT2 *H P8's where this function applies are based on an operator policy in the P8' G?. ?hat enters into that

policy is operator specific but may be based on for eample if the P8' uses "87 based charin- 2 isin home or visited networ#- P' employed- 2 is confiured for '" sinallin low priority- 1harin

1haracteristics value etc.

The P8' G? shall stop any charin actions for the P8' connection upon receivin a LP8' 1harin Pause "tartL

&ndication in a Modify 0earer /eDuest. ?hen the P8' G? receives a Modify 0earer /eDuest for a P8' connectionfor which charin has been stopped previously and- if the Modify 0earer /eDuest contains a LP8' 1harin Pause

"topL &ndication or does not contain a LP8' 1harin Pause "tartL &ndication- then the P8' G? shall continuecharin for the 2.

'OT2 3H &n addition to the "ervice /eDuest Procedure- the P8' G? charin is also unpaused durin mobility

procedures involvin the "ervin G? based on Modify 0earer /eDuest messaes without LP8'1harin Pause "tartL indication.

'OT2 ;H 8elete 0earer 1ommand or 8elete 0earer /eDuest or 8elete 0earer /esponse for a dedicated bearer

does not unpause a previously paused P8' charin.

&f the LP8' 1harin Pause "tartL &ndication or the LP8' 1harin Pause "topL &ndication is received in a Modify

0earer /eDuest the P8' G? shall inore the absence of other informational elements (e.. as the current 2 location is

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un#nown it is also un#nown whether the 2 has left a 1"G cell and thus the absence of 1"G information does notmean the 2 is outside the 1"G cell).

?hen bearers become suspended for a 2 (see T" *3.*<* J9>K)- the P8' G? charin for the 2 is no loner pausedand the P8' G? continues charin for the 2 after suspended bearers are resumed.

'OT2 9H The P8' G? discards pac#ets received for a suspended 2 as described in T" *3.*<* J9>K.

?hile the P8' G? charin is currently paused and the 2 is in 21M=&852 (for &"/ case the device is at same time

in PMM=&852 or "T'80 in T/'AG2/' accesses) the followin appliesH

= The P8' G? shall not chare for downlin# data on this P8'.

'OT2 :H The "ervin G? chares anyway only for the amount of transmitted downlin# data as described inclause 9.<.

= 0ased on operator policyAconfiuration in the P8' G?- the P8' G? may limit the rate of downlin# pac#etssent to the "ervin G?.

0ased on operator policyAconfiuration in the "ervin G?- the "ervin G? may discard rather than buffer thedownlin# user plane pac#ets for this P8' connection while the P8' G? charin is paused. This is to avoid delivery

of user plane pac#ets to the 2 that are not counted in the charin records. /eardless of operator policyAconfiurationthe downlin# user plane pac#ets received from P8' G? at the "ervin G? shall trier 8ownlin# 8ata 'otifications

as described in clause 9.3.;.3.

?hen the "ervin G? receives a Modify 0earer /eDuest or Modify ccess 0earers /eDuest for a P8' connection

trierin a Modify 0earer /eDuest towards the P8' G?- the "ervin G? shall consider the P8' charin as beinunpaused if it has been paused previously.

Ser5i'g GA P* GA

1 . User P$a'e ata

1 . User P$a'e ata

2 . Trigger t"%ause chargi'g i'

P* GA

3 . M"#i; Cearer ReDuest

4 . M"i; Cearer Res%"'se

0i1ure +'3',A2 P=" GB Pause of char1in1 procedure

,. The "ervin G? receives downlin# data pac#ets for a 2 #nown as not user plane connected (i.e. the "ervin

G? contet data indicates no downlin# user plane T2&8 for the e'ode0) as described in clause 9.3.;.3 step ,-i.e. the pac#ets are buffered or discarded in "ervin G? based on operator policy.

*. 0ased on operator policyAconfiuration the "ervin G? triers the procedure to pause P8' charin.Trierin criteria is based on "ervin G? operator policyAconfiuration. 2ample of such policy may beH

a. Operator specified criteriaAthreshold (e.. numberAfraction of pac#etsAbytes dropped at "ervin G? indownlin# since last bein 21M=1O''21T28 (or for &"/ case PMM=1O''21T28)).

b. /ecent indication of Lbnormal /elease of /adio 5in#L (see clause 9.3.9) or a recent 8ownlin# 8ata 'otification /eject (clause 9.3.;.3) without 2 shortly re=enterin 21M connected (or for &"/ case without

also re=enterin PMM connected).

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3. "ervin G? sends a Modify 0earer /eDuest (P8' 1harin Pause "tart) messae to the P8' G?. P8'1harin Pause "tart indicates that P8' G? charin shall be paused.

;. P8' G? confirms with a Modify 0earer /esponse messae.

!.3. GUT: Rea$$"cati"' %r"ce#ure

The MM2 may initiate the GT& /eallocation procedure to reallocate the GT& andAor T& list at any time when a

sinallin association is established between 2 and MM2. The GT& /eallocation procedure allocates a new GT&andAor a new T& list to the 2. The GT& andAor the T& list may also be reallocated by the ttach or the Trac#in

rea pdate procedures.

The GT& /eallocation procedure is illustrated in 7iure 9.3.<=,.

MMEe*"#eCUE

1. GUT: Rea$$"cati"' +"66a'#

2. GUT: Rea$$"cati"' +"6 $ete

0i1ure +'3'-$%2 G!T7 Reallocation Procedure

,. The MM2 sends GT& /eallocation 1ommand (GT&- T& list) to the 2.

*. The 2 returns GT& /eallocation 1omplete messae to the MM2.

!.3.< etach %r"ce#ure

!.3.<.1 Ge'era$

The 8etach procedure allowsH

= the 2 to inform the networ# that it does not want to access the 2P" any loner- and

= the networ# to inform the 2 that it does not have access to the 2P" any loner.

The 2 is detached either eplicitly or implicitlyH

= 2plicit detachH The networ# or the 2 eplicitly reDuests detach and sinal with each other.

= &mplicit detachH The networ# detaches the 2- without notifyin the 2. This is typically the case when thenetwor# presumes that it is not able to communicate with the 2- e.. due to radio conditions.

7our detach procedures are provided when the 2 accesses the 2P" throuh 2=T/'. The first detach procedure is

2=initiated detach procedure and other detach procedures are networ#=initiated detach procedureH

= 2=&nitiated 8etach Procedure. &n the &"/ activated case the 2 initiated detach is split into two sub procedures-

one for 2 campin on 2=T/' and one for 2 campin on G2/'AT/'I

= MM2=&nitiated 8etach ProcedureI

= "G"'=&nitiated 8etach procedure with &"/ activatedI

= @""=&nitiated 8etach Procedure.

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'OT2 ,H The MM2 and the 2 may enter 2MM=82/2G&"T2/28 state without the above procedures.

!.3.<.2 UE-i'itiate# etach %r"ce#ure

The 8etach procedure when initiated by the 2 is described in clauses 9.3.>.*., and 9.3.>.*.*.

!.3.<.2.1 UE-i'itiate# etach %r"ce#ure "r E-UTR&*

7iure 9.3.>.*=, shows the case when 2 camps on 2=T/' and 8etach /eDuest is sent to MM2.

(A)

UE e*"#eC MME Ser5i'g GA P* GA P+R

1. etach ReDuest


. e$ete Sessi"' ReDuest

. e$ete Sessi"' Res "'se


11. etach &cce%t

7SS SGS*

4. etach *"tiicati"'

!. e$ete Sessi"' ReDuest


10. etach &cB

12. Sig'a$$i'g +"''ecti"' Re$ease

<. P+E :'itiate# :P-+&* Sessi"' Ter6i'ati"'

0i1ure +'3'.'&$%2 !$7nitiated =etach Procedure $ ! campin1 on $!TRA"

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps :- < and > concern GTP

based "9A">

,. The 2 sends '" messae 8etach /eDuest (GT&- "witch Off) to the MM2. This '" messae is used totrier the establishment of the ", connection if the 2 was in 21M=&852 mode. "witch Off indicates whether

detach is due to a switch off situation or not. The e'ode0 forwards this '" messae to the MM2 alon withthe T&S21G& of the cell which the 2 is usin.

&f the MM2 receives a 8etach /eDuest via a 1"G cell with "witch Off parameter indicatin that detach is not

due to a switch off situation- and the 1"G subscription for this 1"G &8 and associated P5M' is absent orepired- the MM2 shall trier a MM2=initiated 8etach procedure as specified in clause 9.3.>.3.

'OT2 *H "ecurity procedures may be invo#ed if the '" messae is used to establish the ", connection.

'OT2 3H 7or emerency attached 2s that were not successfully authenticated- security procedures are not performed.

*. The active 2P" 0earers in the "ervin G? reardin this particular 2 are deactivated by the MM2 sendin8elete "ession /eDuest (50&- ser 5ocation &nformation (21G&)) per P8' connection to the "ervin G?. &f

&"/ is activatedthen the "ervin G? shall not release the 1ontrol Plane T2&8 allocated for MM2A"G"' untilit receives the 8elete "ession /eDuest messae in step 9. &f the 2 Time None has chaned- the MM2 includes

the 2 Time None &2 in this messae.

3. ?hen the "=G? receives the first 8elete "ession /eDuest messae from the MM2 or "G"' in &"/ activatedstate- the "ervin G? deactivates &"/- releases the related 2P" 0earer contet information and responds with

8elete "ession /esponse (1ause).

3GPP

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?hen the "=G? receives the 8elete "ession /eDuest messae from the MM2 or "G"' in &"/ deactivated state-the "ervin G? releases the related 2P" 0earer contet information and jumps to step : by sendin a 8elete

"ession /eDuest (50&) messae per P8' connection to the P8' G?. fter step < the "ervin G? responds bac# to the MM2A"G"' with the 8elete "ession /esponse (1ause) messae.

;. &f &"/ is activated- MM2 sends 8etach &ndication (1ause) messae to the associated "G"'. The 1ause indicates

complete detach.

9. The active P8P contets in the "ervin G? reardin this particular 2 are deactivated by the "G"' sendin

8elete "ession /eDuest (50&- 1G&A"&) per P8' connection to the "ervin G?. &f the 2 Time None has

chaned- the "G"' includes the 2 Time None &2 in this messae.

:. &f &"/ is activated- "ervin G? deactivates &"/. &f &"/ is not activated in the "ervin G?- the "ervin G?

sends 8elete "ession /eDuest (50&- ser 5ocation &nformation (21G& or 1G&A"&)) per P8' connection to theP8' G?. &f &"/ is not activated- this step shall be triered by step *. This messae indicates that all bearers

belonin to that P8' connection shall be released. &f the MM2 andAor "G"' sends 2$s 5ocation &nformationandAor 2 Time None &nformation in step * andAor step 9- the "=G? includes the ser 5ocation &nformation

andAor 2 Time None andAor ser 1"G &nformation with the least ae in this messae.

<. The P8' G? ac#nowledes with 8elete "ession /esponse (1ause).

>. The P8' G? employs a P127 initiated &P=1' "ession Termination Procedure as defined in T" *3.*+3 J:Kwith the P1/7 to indicate to the P1/7 that 2P" 0earer is released if P1/7 is applied in the networ#. &f

reDuested by the P1/7 the P8' G? indicates ser 5ocation &nformation andAor 2 Time None &nformation tothe P1/7 as defined in T" *3.*+3 J:K.

C. The "ervin G? ac#nowledes with 8elete "ession /esponse (1ause).

,+. The "G"' sends 8etach c#nowlede messae to the MM2.

,,. &f "witch Off indicates that detach is not due to a switch off situation- the MM2 sends a 8etach ccept to the2.

,*. The MM2 releases the ",=MM2 sinallin connection for the 2 by sendin ", /elease 1ommand to the

e'ode0 with 1ause set to 8etach. The details of this step are covered in the L", /elease ProcedureL- asdescribed in clause 9.3.9.

!.3.<.2.2 UE-i'itiate# etach %r"ce#ure "r GER&*UTR&* ith :SR acti5ate#

7iure 9.3.>.*=* shows the case when 2 with &"/ ctivated camps on G2/'AT/' and 8etach /eDuest is sent to"G"'. /efer to clause :.:., of T" *3.+:+ J<K for the 2=initiated 8etach procedure when &"/ is not activated.

3GPP

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(A)

UE CSSUTR&* SGS* Ser5i'g GA P* GA P+R

1. etach ReDuest


. e$ete Cearer ReDu est

. e$ete Cearer Res%"'se


11. etach &cce%t

7SS MME




10. etach &cB


<. P+E :'itiate# :P +&* Sessi"' Ter6i'ati"'

(A)




7SS MME

<. P+E :'itiate# :P-+&* Sessi"' Ter6i'ati"'

0i1ure +'3'.'&$&2 !$7nitiated =etach Procedure $ ! campin1 on GRA"!TRA"5 7SR activated

,. The 2 sends '" messae 8etach /eDuest (8etach Type- P=TM"&- P=TM"&="inature- "witch Off) to the

"G"'. 8etach Type indicates which type of detach is to be performed- i.e. GP/" 8etach only- &M"& 8etach

only or combined GP/" and &M"& 8etach. "witch Off indicates whether detach is due to a switch off situationor not. The 8etach /eDuest messae includes P=TM"& and P=TM"& "inature. P=TM"& "inature is used to

chec# the validity of the 8etach /eDuest messae. &f P=TM"& "inature is not valid or is not included- the

authentication procedure should be performed.

&f the "G"' receives a 8etach /eDuest via a 1"G cell with "witch Off parameter indicatin that detach is not

due to a switch off situation- and the 1"G subscription for this 1"G &8 and associated P5M' is absent orepired- the "G"' shall trier a "G"'=initiated 8etach procedure as specified in clause 9.3.>.3.

*. The active 2P" 0earers in the "ervin G? reardin this particular 2 are deactivated by the "G"' sendin8elete "ession /eDuest (50&- ser 5ocation &nformation (1G&A"&)) per P8' connection to the "ervin G?.

0ecause &"/ is activatedthen the "ervin G? shall not release the 1ontrol Plan T2&8 allocated forMM2A"G"' until it receives the 8elete "ession /eDuest messae in step 9. &f the 2 Time None has chaned-

the "G"' includes the 2 Time None &2 in this messae.

3. 0ecause the "ervin G? receives this messae in &"/ activated state- the "ervin G? deactivates &"/ and

ac#nowledes with 8elete "ession /esponse (1ause).

;. 0ecause &"/ is activated- the "G"' sends 8etach 'otification (1ause) messae to the associated MM2. 1auseindicates complete detach.

9. The active P8P contets in the "ervin G? reardin this particular 2 are deactivated by the MM2 sendin

8elete "ession /eDuest (50&- 21G&) per P8' connection to the "ervin G?. &f the 2 Time None has chaned-the MM2 includes the 2 Time None &2 in this messae.

:. "ervin G? deactivates &"/ and sends 8elete "ession /eDuest (50&- ser 5ocation &nformation (21G& or1G&A"&)) per P8' connection to the P8' G?. &f &"/ is not activated- this step shall be triered by step *.

This messae indicates that all bearers belonin to that P8' connection shall be released. &f the MM2 andAor"G"' sends 2$s 5ocation &nformation andAor 2 Time None &nformation in step * andAor step 9- the "=G?

includes the ser 5ocation &nformation andAor 2 Time None with the least ae in this messae.

<. The P8' G? ac#nowledes with 8elete "ession /esponse (1ause).>. The P8' G? employs a P127 initiated &P 1' "ession Termination Procedure as defined in T" *3.*+3 J:K

with the P1/7 to indicate to the P1/7 that 2P" 0earer is released if P1/7 is applied in the networ#. &f

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reDuested by the P1/7 the P8' G? indicates ser 5ocation &nformation andAor 2 Time None &nformation tothe P1/7 as defined in T" *3.*+3 J:K.

C. The "ervin G? ac#nowledes with 8elete "ession /esponse (1ause).

,+. The MM2 sends 8etach c#nowlede messae to the "G"'.

,,. &f "witch Off indicates that detach is not due to a switch off situation- the "G"' sends a 8etach ccept to the2.

,*. &f the M" was GP/" detached- then the 3G "G"' releases the P" sinallin connection.

!.3.<.3 MME-i'itiate# etach %r"ce#ure

The MM2=&nitiated 8etach procedure when initiated by the MM2 is illustrated in 7iure 9.3.>.3=,.

This procedure may be also used as part of the "&PTO function when the MM2 determines that G? relocation isdesirable for all P8' connection(s) servin "&PTO=allowed P's. The MM2 initiates the Leplicit detach with reattach

reDuiredL procedure and the 2 should then re=establish those P8' connections for the same P'(s).

(A)

UE e*"#eC MME Ser5i'g GA P* GA P+R

1. etach ReDuest





11. etach &cce%t

7SSSGS*




10. etach &cB


<. P+E :'itiate# :P-+&*Sessi"' Ter6i'ati"'

(>)

0i1ure +'3'.'3$%2 88$7nitiated =etach Procedure

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps 3- ; and 9 concern GTP

based "9A">.

'OT2 *H Procedure steps (0) are used by the procedure steps (2) in clause 9.3.*.,.

,. The MM2 initiated detach procedure is either eplicit (e.. by OQM intervention) or implicit. The MM2 may

implicitly detach a 2- if it has not had communication with 2 for a lon period of time. The MM2 does notsend the 8etach /eDuest (8etach Type) messae to the 2 for implicit detach. The implicit detach is local to the

MM2- i.e. an "G"' reistration will not be detached. &f the 2 is in 21M=1O'''21T28 state the MM2 mayeplicitly detach the 2 by sendin a 8etach /eDuest messae to the 2. The 8etach Type may be set to re=

attach in which case the 2 should re=attach at the end of the detach process. &f the 2 is in 21M=&852 state theMM2 paes the 2.

7or emerency attached 2s- MM2 initiated implicit detach procedures are based on an inactivity timeoutspecific to emerency.

3GPP

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&f this 8etach procedure is due to the 2$s 8etach /eDuest via a 1"G cell which the 2 is not allowed to access-i.e. the 1"G subscription for this 1"G &8 and associated P5M' is absent or epired- the MM2 shall send a

8etach /eDuest to 2 with an appropriate cause indicatin the 2 is not allowed to access this 1"G.

*. ny 2P" 0earer 1ontet information in the "ervin G? reardin this particular 2 and related to the MM2

are deactivated by the MM2 sendin 8elete "ession /eDuest (50&- ser 5ocation &nformation (21G&)- '"

/elease 1ause if available) messae per P8' connection to the "ervin G?. &f the 2 Time None has chaned-the MM2 includes the 2 Time None &2 in this messae. '" /elease 1ause is only sent by the MM2 to theP8' G? if this is permitted accordin to MM2 operator$s policy.

3. ?hen the "=G? receives the first 8elete "ession /eDuest messae from the MM2 or "G"' in &"/ activatedstate- the "ervin G? deactivates &"/- releases the related 2P" 0earer contet information and responds with

8elete "ession /esponse (1ause).

?hen the "=G? receives the 8elete "ession /eDuest messae from the MM2 or "G"' in &"/ deactivated state-

the "ervin G? releases the related 2P" 0earer contet information and jumps to step : by sendin a 8elete"ession /eDuest (50&) messae to the P8' G?. fter step < the "ervin G? responds bac# to the MM2A"G"'

with the 8elete "ession /esponse (1ause) messae.

;. &f &"/ is activated- MM2 sends 8etach 'otification (1ause) messae to the associated "G"'. The cause

indicates whether it is a local or complete detach.

9. &f cause indicates complete detach then the "G"' sends a 8elete "ession /eDuest (50&- 1G&A"&) messae per

P8' connection to the "ervin G?. &f 1ause indicates local detach then "G"' deactivates &"/ and steps 9 to Cshall be s#ipped. &f the 2 Time None has chaned- the "G"' includes the 2 Time None &2 in this messae.

:. &f &"/ is activated- "ervin G? deactivates &"/.

&f &"/ is not activated and the "ervin G? received one or several 8elete 0earer /eDuest messae(s) from

"G"' in step *- the "ervin G? sends a 8elete "ession /eDuest (50&- ser 5ocation &nformation (21G& or1G&A"&)- '" /elease 1ause if available) messae for each associated P8' connection to the P8' G?. '"

/elease 1ause is the one received in the 8elete "ession /eDuest from the MM2. This messae indicates that all

bearers belonin to that P8' connection shall be released.

&f the MM2 andAor "G"' send(s) 2$s 5ocation &nformation andAor 2 Time None in step * andAor "tep 9- the"=G? includes the ser 5ocation &nformation andAor 2 Time None &nformation with the least ae in this

messae.

<. The P8' G? ac#nowledes with 8elete "ession /esponse (1ause) messae.

>. The P8' G? employs an &P=1' "ession Termination procedure as defined in T" *3.*+3 J:K with the P1/7 to

indicate to the P1/7 that the 2P" 0earer(s) are released if a P1/7 is confiured. &f reDuested by the P1/7 theP8' G? indicates ser 5ocation &nformation andAor 2 Time None &nformation and '" /elease 1ause (if

available) to the P1/7 as defined in T" *3.*+3 J:K.

C. The "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messae.

,+. The "G"' sends 8etach c#nowlede messae to the MM2.

,,. &f the 2 receives the 8etach /eDuest messae from the MM2 in the step ,- the 2 sends a 8etach cceptmessae to the MM2 any time after step ,. The e'ode0 forwards this '" messae to the MM2 alon with the

T&S21G& of the cell which the 2 is usin.

&f the 2 receives 8etach /eDuest from the MM2 via a 1"G cell with the cause indicatin the 2 is not allowed

to access this 1"G- the 2 shall remove this 1"G &8 and associated P5M' from its llowed 1"G list- if present.

,*. fter receivin the 8etach ccept messae- 8elete "ession /esponse and- if appropriate- 8etach c#nowledemessae- the MM2 releases the ",=MM2 sinallin connection for the 2 by sendin an ", /elease 1ommand

(1ause) messae to the e'ode0. The details of this step are covered in the L", /elease ProcedureL- as describedin clause 9.3.9 by step ; to step :. &f the 8etach Type reDuests the 2 to ma#e a new attach- the 2 reattaches

after the //1 1onnection /elease is completed.

3GPP

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!.3.<.3& SGS*-i'itiate# etach %r"ce#ure ith :SR acti5ate#

The "G"'=&nitiated 8etach procedure with &"/ activated is illustrated in 7iure 9.3.>.3=,. /efer to clause :.:.*., ofT" *3.+:+ J<K for the "G"'=initiated 8etach procedure when &"/ is not activated.


(A)


1. etach ReDuest




11. etach &cce%t 10. etach &cB


7SS MME




<. P+E :'itiate# :P - +&* Sessi"' Ter6i'ati"'

0i1ure +'3'.'3A$%2 SGS"$7nitiated =etach Procedure #ith 7SR activated

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps 3- ; and 9 concern GTP

based "9A">.

,. The "G"' initiated detach procedure is either eplicit (e.. by OQM intervention) or implicit. The "G"' mayimplicitly detach a 2- if it has not had communication with 2 for a lon period of time. The "G"' does not

send the 8etach /eDuest (8etach Type) messae to the 2 for implicit detach. The implicit detach is local to the"G"'- i.e. an MM2 reistration will not be detached. &f the 2 is in PMM=1O'''21T28 state the "G"'

may eplicitly detach the 2 by sendin a 8etach /eDuest messae to the 2. The 8etach Type may be set tore=attach in which case the 2 should re=attach at the end of the detach process. &f the 2 is in PMM=&852 state

the "G"' paes the 2.

&f this 8etach procedure is due to the 2$s 8etach /eDuest via a 1"G cell which the 2 is not allowed to access-

i.e. the 1"G subscription for this 1"G &8 and associated P5M' is absent or epired- the "G"' shall send a

8etach /eDuest to 2 with an appropriate cause indicatin the 2 is not allowed to access this 1"G.

*. ny 2P" 0earer 1ontet information in the "ervin G? reardin this particular 2 and related to the "G"' isdeactivated by the "G"' sendin 8elete "ession /eDuest (50&- ser 5ocation &nformation (21G&)) messae per

P8' connection to the "ervin G?. &f the 2 Time None has chaned- the "G"' includes the 2 Time None&2 in this messae.

3. 0ecause the "ervin G? receives this messae in &"/ activated state- the "ervin G? deactivates &"/- releasesthe "G"' related 2P" 0earer contet information and ac#nowledes with 8elete "ession /esponse (1ause).

;. 0ecause &"/ is activated- the "G"' sends 8etach 'otification (1ause) messae to the associated MM2. The

cause indicates whether it is a local or complete detach.

9. &f cause indicates complete detach then the MM2 sends a 8elete "ession /eDuest (50&- ser 5ocation&nformation (21G&)) messae per P8' connection to the "ervin G?. &f 1ause indicates local detach then

MM2 deactivates &"/ and steps 9 to C shall be s#ipped. &f the 2 Time None has chaned- the MM2 includes

the 2 Time None &2 in this messae.

:. The "ervin G? sends a 8elete "ession /eDuest (50&- ser 5ocation &nformation (21G& or 1G&A"&)) messae per P8' connection to the P8' G?. This messae indicates that all bearers belonin to that P8' connection

3GPP

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8/13/2019 23401-c30


shall be released. &f the MM2 andAor "G"' sends 2$s 5ocation &nformation andAor 2 Time None in step *andAor step 9- the "=G? includes the ser 5ocation &nformation andAor 2 Time None &nformation with the

least ae in this messae.

<. The P8' G? ac#nowledes with 8elete "ession /esponse (1ause) messae.

>. The P8' G? employs an &P 1' "ession Termination procedure as defined in T" *3.*+3 J:K with the P1/7 to

indicate to the P1/7 that the 2P" 0earer(s) are released if a P1/7 is confiured. &f reDuested by the P1/7 theP8' G? indicates ser 5ocation &nformation andAor 2 Time None &nformation to the P1/7 as defined in

T" *3.*+3 J:K.

C. The "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messae.

,+. The MM2 sends 8etach c#nowlede messae to the "G"'.

,,. &f the 2 receives the 8etach /eDuest messae from the "G"' in the step ,- the 2 sends a 8etach cceptmessae to the "G"' any time after step ,.

&f the 2 receives 8etach /eDuest from the "G"' via a 1"G cell with the cause indicatin the 2 is notallowed to access this 1"G- the 2 shall remove this 1"G &8 and associated P5M' from its llowed 1"G list-

if present.

,*. fter receivin the 8etach ccept messae- if 8etach Type did not reDuest the 2 to ma#e a new attach- then

the 3G "G"' releases the P" sinallin connection.

!.3.<.4 7SS-i'itiate# etach %r"ce#ure

The @""=&nitiated 8etach procedure is initiated by the @"". The @"" uses this procedure for operator=determined

purposes to reDuest the removal of a subscriber$s MM and 2P" bearer at the MM2 and also at the "G"' if both anMM2 and an "G"' are reistered in the @"".

7or 2s with emerency 2P" bearers- the MM2A"G"' shall not initiate detach procedure. &nstead the MM2A"G"'shall deactivate all the non emerency P8' connection.

7or subscription chane- e.. /T restrictions to disallow one of the /Ts- the &nsert "ubscription 8ata procedure shall be used towards the MM2- and also towards the "G"' if both an MM2 and an "G"' are reistered in the @"".

This procedure is not applied if a 1ancel 5ocation is sent to the MM2 or the "G"' with a cause other than "ubscription?ithdrawn.

The @""=&nitiated 8etach Procedure is illustrated in 7iure 9.3.>.;=,.

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e*"#eC MME

2a. etach ReDuest

3a. e$ete Sessi"' ReDuest

a. e$ete Sessi"' Res%"'se

<a. etach &cce%t

10a. Sig'a$$i'g +"''ecti"' Re$ease

1a. +a'ce$ L"cati"'

1a. +a'ce$ L"cati"' &+

1. +a'ce$ L"cati"' 2. etach ReDuest



<. etach &cce%t

1. +a'ce$ L"cati"' &+

R*+CSS


!. e$ete Sessi"' Res%"'se

UE Ser5i'g GA P* GA P+R 7SS SGS*

. P+E :'itiate# :P-+&*Sessi"' Ter6i'ati"'

(A)

(>)


0i1ure +'3'.'$%2 SS$7nitiated =etach Procedure

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps ;- 9 and : concern GTP

based "9A">.

'OT2 *H Procedure steps (0) are used by the procedure steps (7) in clause 9.3.*.,.

'OT2 3H The steps below apply for an ";="G"'. 7or GnAGp "G"'- the procedure specified in clause :.:.*.*. of

T" *3.+:+ J<K applies for the "G"'.

,. &f the @"" wants to reDuest the immediate deletion of a subscriber$s MM contets and 2P" 0earers- the @""shall send a 1ancel 5ocation (&M"&- 1ancellation Type) messae with 1ancellation Type set to "ubscription

?ithdrawn to the reistered MM2 and also to the "G"' if an "G"' is also reistered. ?hen receivin the1ancel 5ocation Messae the MM2A"G"' ac#nowledes with a 1ancel 5ocation 1% (&M"&) messae to the

@"".

*. &f 1ancellation Type is "ubscription ?ithdrawn- the MM2A"G"' which has an active 2 contet informs the

2 which is in 21M=1O''21T28 state- that it has been detached- by sendin 8etach /eDuest (8etach Type)

messae to the 2. &f the 1ancel 5ocation messae includes a fla to indicate re=attach is reDuired- theMM2A"G"' shall set the 8etach Type to indicate that re=attach is reDuired. &f the 2 is in 21M=&852 state the

MM2 paes the 2.

'OT2 ;H The 2 will receive only one 8etach /eDuest messae in the /T where it currently camps on.

3a. &f the MM2 has an active 2 contet- the MM2 sends a 8elete "ession /eDuest (50&- ser 5ocation

&nformation (21G&)- '" /elease 1ause if available) messae per P8' connection to the "ervin G? todeactivate the 2P" 0earer 1ontet information in the "ervin G?. '" /elease 1ause is only sent by the MM2

to the P8' G? if this is permitted accordin to MM2 operator$s policy.

3b. &f the "G"' has an active 2 contet- the "G"' sends a 8elete "ession /eDuest (50&- ser 5ocation

&nformation (1G&A"&)) per P8' connection to the "ervin G? to deactivate the 2P" 0earer 1ontet

information in the "ervin G?.

;. ?hen the "=G? receives the first 8elete "ession /eDuest messae from the MM2 or "G"' in &"/ activatedstate- the "ervin G? deactivates &"/- releases the related 2P" 0earer contet information and responds with

8elete "ession /esponse in step <.

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*. The MM2 updates the stored "ubscription 8ata and ac#nowledes the &nsert "ubscriber 8ata messae byreturnin an &nsert "ubscriber 8ata c# (&M"&) messae to the @"". The update result should be contained in

the c# messae.

The MM2 initiates appropriate action accordin to the chaned subscriber data (e.. MM2 initiates detach if the

2 is not allowed to roam in this networ#). 7or received P8' subscription contets that have no related active

P8' connection in the MM2- no further action is reDuired ecept storae in the MM2. Otherwise if thesubscribed Eo" Profile has been modified and the 2 is in 21M=1O''21T28 state or in 21M=&852 statewhen &"/ is not activated- the @"" &nitiated "ubscribed Eo" Modification procedureas described in

7iure 9.;.*.*=,- is invo#ed from step *a. &f the 2 is in 21M=&852 state and the &"/ is activated- this procedure is invo#ed at the net 21M=&852 to 21M=1O''21T28 transition. &f the 2 is in 21M=&852 state

and the &"/ is not activated and if the subscription chane no loner allows the P8' connection- the MM2

initiated P8' disconnection procedure in clause 9.,+.3 is used to delete the concerned P8' connection.

&f the 2 is in 21M=1O''21T28 state and connected via a 1"G or hybrid cell- the MM2 shall chec# thereceived 1"G subscription data. &f the MM2 detects that the 1"G membership to that cell has chaned or

epired- the MM2 initiates the procedure in clause 9.,:.

!.3..3 Purge u'cti"'

The Pure function allows an MM2 to inform the @"" that it has deleted the subscription data and MM contet of adetached 2. The MM2 may- as an implementation option- delete the subscription data and MM contet of an 2

immediately after the implicit or eplicit detach of the 2. lternatively the MM2 may #eep for some time the

subscription data and the MM contet of the detached 2- so that the data can be reused at a later attach withoutaccessin the @"".

MME 7SS

1. Purge UE

2. Purge UE &cB'"$e#ge

0i1ure +'3'/'3$%2 Pur1e Procedure

,. fter deletin the "ubscription data and MM contets of a detached 2- the MM2 sends Pure 2 (&M"&)messae to the @"".

*. The @"" sets the 2 Pured for 2=T/' fla and ac#nowledes with a Pure 2 c# messae.

!.3.10 Securit; u'cti"'

!.3.10.1 Ge'era$

The security functions includeH

The security functions includeH

= Guards aainst unauthorised 2P" service usae (authentication of the 2 by the networ# and service reDuest

validation).

= Provision of user identity confidentiality (temporary identification and cipherin).

= Provision of user data and sinallin confidentiality (cipherin).

= Provision of oriin authentication of sinallin data (interity protection).

= uthentication of the networ# by the 2.

"ecurity=related networ# functions for 2P" are described in T" 33.;+, J;,K.

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!.3.10.2 &uthe'ticati"' a'# e; &gree6e't

2P" % is the authentication and #ey areement procedure that shall be used over 2=T/'- between the 2 andMM2. 2P" % is specified in T" 33.;+, J;,K.

!.3.10.3 User :#e'tit; +"'i#e'tia$it;

n M=TM"& identifies a user between the 2 and the MM2. The relationship between M=TM"& and &M"& is #nownonly in the 2 and in the MM2.

!.3.10.4 User ata a'# Sig'a$$i'g +"'i#e'tia$it;

There are two different levels of the security associations between the 2 and the networ#.

i) //1 and P security association is between the 2 and 2=T/'. The //1 security associations protect the

//1 sinallin between the 2 and 2=T/' (interity protection and cipherin). The P security associationis also between the 2 and 2=T/' and provide user plane encryption function.

ii) '" security association is between the 2 and the MM2. &t provides interity protection and encryption of

'" sinallin.

!.3.10.4.1 &S securit; 6"#e c"66a'# %r"ce#ure

The MM2 triers the //1 level " security mode command procedure by sendin the needed security parameters to

the e'ode0. This enables cipherin of the P traffic and cipherin and interity protection of the //1 sinallin asdescribed in T" 33.;+, J;,K.

!.3.10.4.2 *&S Securit; M"#e +"66a'# %r"ce#ure

The MM2 uses the '" "ecurity Mode 1ommand ("M1) procedure to establish a '" security association between

the 2 and MM2- in order to protect the further '" sinallin messaes. This procedure is also used to ma#e chanesin the security association- e.. to chane the security alorithm.

2. *&S Securit; M"#e +"6%$ete

1. *&S Securit; M"#e +"66a'#

UE MMEe*"#eC

0i1ure +'3'%''&$%2 "AS Security 8ode 9ommand Procedure

,. The MM2 sends '" "ecurity Mode 1ommand ("elected '" alorithms- e%"&- M2 &dentity reDuest- 2"ecurity 1apability) messae to the 2. M2 identity reDuest may be included when '" "M1 is combined with

M2 &dentity retrieval (see clause 9.3.,+.9).

*. The 2 responds '" with "ecurity Mode 1omplete ('"=M1- M2 &dentity) messae. The 2 includes the

M2 &dentity if it was reDuested in step ,.

'OT2H The '" "ecurity Mode 1ommand procedure is typically eecuted as part of the ttach procedure (see

clause 9.3.*.,) in advance of- or in combination with- eecutin the M2 &dentity 1hec# procedure (see

clause 9.3.,+.9) and in the T procedure (see clauses 9.3.3., and 9.3.3.*).

More details of the procedure are described in T" 33.;+, J;,K.

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!.3.10.! ME i#e'tit; checB %r"ce#ure

The Mobile 2Duipment &dentity 1hec# Procedure permits the operator(s) of the MM2 andAor the @"" andAor theP8' G? to chec# the Mobile 2Duipment$s identity (e.. to chec# that it has not been stolen- or- to verify that it does not

have faults).

The M2 &dentity can be chec#ed by the MM2 passin it to an 2Duipment &dentity /eister (2&/) and then the MM2analysin the response from the 2&/ in order to determine its subseDuent actions (e.. sendin an ttach /eject if the2&/ indicates that the Mobile 2Duipment is blac#listed).

The M2 identity chec# procedure is illustrated in 7iure 9.3.,+.9=,.

e*"#eC

1. :#e'tit; Res%"'se

2. ME :#e'tit; +hecB

1. :#e'tit; ReDuest

2. ME :#e'tit; +hecB &cB

UE E:RMME

0i1ure +'3'%'+$%2 7dentity 9heck Procedure

,. The MM2 sends &dentity /eDuest (&dentity Type) to the 2. The 2 responds with &dentity /esponse (Mobile&dentity).

*. &f the MM2 is confiured to chec# the &M2& aainst the 2&/- it sends M2 &dentity 1hec# (M2 &dentity- &M"&) to2&/. The 2&/ responds with M2 &dentity 1hec# c# (/esult).

'OT2H The &dentity 1hec# Procedure is typically eecuted as part of the ttach procedure (see clause 9.3.*.,).

!.3.11 UE Reachai$it; %r"ce#ures

!.3.11.1 Ge'era$

There are two procedures necessary for any service related entity that would need to be notified by the reachability of

the 2 at 2P1 '" levelH

= 2 /eachability 'otification /eDuest procedureI and

= 2 ctivity 'otification procedure.

!.3.11.2 UE Reachai$it; *"tiicati"' ReDuest %r"ce#ure

The 2 /eachability 'otification /eDuest procedure is illustrated in 7iure 9.3.,,.*=,.

MME 7SS

1. UE-RE&+7&C:L:T-*8T::+&T:8*-REUEST (URRP-MME)

0i1ure +'3'%%'&$%2 ! Reacha4ility "otification Re:uest Procedure

,) &f a service=related entity reDuests the @"" to provide an indication reardin 2 reachability on 2P"- the @""stores the service=related entity and sets the //P=MM2 parameter to indicate that such reDuest is received. &fthe value of //P=MM2 parameter has chaned from Lnot setL to LsetL- the @"" sends a 2=

/21@0&5&T='OT&7&1T&O'=/2E2"T (//P=MM2) to the MM2. &f the MM2 has an MM contet

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!.3.13 +SS suscri%ti"' #ata 6a'age6e't u'cti"' %r"ce#ure

!.3.13.1 Ge'era$

The 1"" subscription data manaement function allows the 1"" to update the 1"" subscription data stored in theMM2.

The 1"" subscription data is stored and manaed in the MM2 independently from the "ubscription 8ata received fromthe @"".

?henever the 1"" subscription data is chaned for a user in the 1""- and the chanes affect the 1"G subscriptioninformation stored in the MM2- the MM2 shall be informed about these chanes by the means of the followin

procedureH

= &nsert 1"G "ubscriber 8ata procedure- used to add or modify the 1"" subscription data in the MM2.

!.3.13.2 :'sert +SG Suscrier ata %r"ce#ure

The &nsert 1"G "ubscriber 8ata procedure is illustrated in 7iure 9.3.,3.*=,.

MME +SS

1. :'sert +SG Suscrier ata

2. :'sert +SG Suscrier ata &cB

0i1ure +'3'%3'&$%2 7nsert 9SG Su4scri4er =ata procedure

,. The 1"" sends an &nsert 1"G "ubscriber 8ata (&M"&- 1"G "ubscription 8ata) messae to the MM2.

*. The MM2 updates the stored 1"G "ubscription 8ata and ac#nowledes the &nsert 1"G "ubscriber 8atamessae by returnin an &nsert 1"G "ubscriber 8ata c# (&M"&) messae to the 1"". The update result should

be contained in the c# messae.

The MM2 initiates appropriate action accordin to the chaned 1"G subscriber data. &f the 2 is in 21M=

1O''21T28 state and connected via a 1"G or hybrid cell- the MM2 shall chec# the received 1"G subscriber

data. &f the MM2 detects that the 1"G membership to that cell has chaned or epired- the MM2 initiates the procedure in clause 9.,:.

!.3.14 UE Ra#i" +a%ai$it; Match ReDuest

&f the MM2 reDuires more information on the 2 radio capabilities support to be able to set the &M" voice over P"

"ession "upported &ndication (see clause ;.3.9.>)- then the MM2 may send a 2 /adio 1apability Match /eDuestmessae to the e'0. This procedure is typically used durin the &nitial ttach procedure- durin Trac#in rea pdate

procedure for the Lfirst T followin G2/'AT/' ttachL or for L2 radio capability updateL or when MM2has not received the Boice "upport Match &ndicator (as part of the MM 1ontet).

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1. S1-&P UE Ra#i" +a%ai$it; Match ReDuest

MME UE e*"#eC

2. RR+ UE +a%ai$it; E'Duir;

3. RR+ UE +a%ai$it; :'"r6ati"'

4. S1-&P UE Ra#i" +a%ai$it; Match Res%"'se

! S1-&P UE +a%ai$it; :'" :'#icati"'

0i1ure +'3'%$%2 ! Radio 9apa4ility 8atch Re:uest

, The MM2 indicates whether the MM2 wants to receive Boice support match indicator. The MM2 may includethe 2 /adio 1apability information that it has previously received from the e'0 via a ",=P 21P0&5&T &'7O &'8&1T&O' as described in clause 9.,,.*.

*. pon receivin a 2 /adio 1apability Match /eDuest from the MM2- if the e'0 has not already received the2 radio capabilities from the 2 or from MM2 in step ,- the e'0 reDuests the 2 to upload the 2 radio

capability information by sendin the //1 2 1apability 2nDuiry.

3. The 2 provides the e'0 with its 2 radio capabilities sendin the //1 2 1apability &nformation.

;. The e'0 chec#s whether the 2 radio capabilities are compatible with the networ# confiuration for ensurinvoice service continuity of voice calls initiated in &M".

7or determinin the appropriate 2 /adio 1apability Match /esponse- the e'0 is confiured by the operator to

chec# whether the 2 supports certain capabilities reDuired for Boice continuity of voice calls usin &M" P". &n

a shared networ#- the e'0 #eeps a confiuration separately per P5M'.

'OT2 ,H ?hat chec#s to perform depends on networ# confiuration- i.e. followin are some eamples of 2

capabilities to be ta#en into accountH

= the "/B11- and T/'A2=T/' Boice over P" capabilitiesI

= the /adio capabilities for T/'A2=T/' 788 andAor T88I andAor

= the support of T/'A2=T/' freDuency bands.

'OT2 *H The networ# confiuration considered in the decision for the Boice "upport Match &ndicator ishomoenous within a certain area (e.. MM2 Pool rea) in order to uarantee that the Boice "upport

Match &ndicator from the e'0 is valid within such area.

The e'0 provides a Boice "upport Match &ndicator to the MM2 to indicate whether the 2 capabilities and

networ#s confiuration are compatible for ensurin voice service continuity of voice calls initiated in &M".

The MM2 stores the received Boice support match indicator in the MM 1ontet and uses it as an input for

settin the &M" voice over P" "ession "upported &ndication.

9. &f e'0 reDuested radio capabilities from 2 in step * and 3- e'0 also sends the 2 radio capabilities to the

MM2 usin the ",=P 2 1P0&5&T &'7O &'8&1T&O'. The MM2 stores the 2 radio capabilitieswithout interpretin them for further provision to the e'0 in cases described in clause 9.,,.*.

'OT2 3H "teps ; and 9 may be received by the MM2 in any order.

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!.4.2 Cearer 6"#iicati"' ith earer "S u%#ate

!.4.2.1 P* GA i'itiate# earer 6"#iicati"' ith earer "S u%#ate

The P8' G? initiated bearer modification procedure (includin 2P" 0earer Eo" update) for a GTP based "9A"> is

depicted in fiure 9.;.*.,=,. This procedure is used in cases when one or several of the 2P" 0earer Eo" parametersE1&- G0/- M0/ or /P are modified (includin the E1& or the /P of the default 2P" bearer e.. due to the @""&nitiated "ubscribed Eo" Modification procedureas described in clause 9.;.*.*) or to modify the P'=M0/.

Modification from a E1& of resource type non=G0/ to a E1& of resource type G0/ and vice versa is not supported bythis procedure.

'OT2 ,H The E1& of an eistin dedicated bearer should only be modified if no additional bearer can beestablished with the desired E1&.

(>)

3. U%#ate Cearer ReDuest

MME Ser5i'g GA P* GA P+R

4. Cearer M"#i; ReDuestSessi"' Ma'age6e't ReDuest

!. RR+ +"''ecti"' Rec"'igurati"'

2. U%#ate Cearer reDuest

. RR+ +"''ecti"' Rec"'igurati"' +"6%$ete

. Cearer M"#i; Res%"'se

10. U%#ate Cearer Res%"'se

11. U%#ate Cearer res%"'se

UE e*"#eC

(A) 1. :P-+&* Sessi"'M"#iicati"'

12. :P-+&* Sessi"'M"#iicati"'

. Sessi"' Ma'age6e't Res%"'se <. irect Tra'ser

0i1ure +''&'%$%2 >earer 8odification Procedure #ith >earer DoS !pdate

'OT2 *H "teps 3=,+ are common for architecture variants with GTP based "9A"> and PM&P=based "9A">. 7or a

PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "teps ,- *- ,, and ,*concern GTP based "9A">.

,. &f dynamic P11 is deployed- the P1/7 sends a P11 decision provision (Eo" policy) messae to the P8' G?.This corresponds to the initial steps of the P1/7=&nitiated &P=1' "ession Modification procedure or to the

P1/7 response in the P127 initiated &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K- up tothe point that the P8' G? reDuests &P=1' 0earer "inallin. The P11 decision provision messae may

indicate that ser 5ocation &nformation andAor 2 Time None &nformation is to be provided to the P1/7 asdefined in T" *3.*+3 J:K. &f dynamic P11 is not deployed- the P8' G? may apply local Eo" policy.

*. The P8' G? uses this Eo" policy to determine that the authori!ed Eo" of a service data flow has chaned orthat a service data flow shall be areated to or removed from an active bearer. The P8' G? enerates the

T7T and updates the 2P" 0earer Eo" to match the traffic flow areate. The P8' G? then sends the pdate0earer /eDuest (PT&- 2P" 0earer &dentity- 2P" 0earer Eo"- P'=M0/- T7T) messae to the "ervin G?.

The Procedure Transaction &d (PT&) parameter is used when the procedure was initiated by a 2 /eDuested0earer /esource Modification Procedure = see clause 9.;.9. 7or P'=M0/- the 2P" bearer identity must refer

to a non=G0/ bearer.

3. The "ervin G? sends the pdate 0earer /eDuest (PT&- 2P" 0earer &dentity- 2P" 0earer Eo"- T7T-

P'=M0/) messae to the MM2. &f the 2 is in 21M=&852 state the MM2 will trier the 'etwor#Triered "ervice /eDuest from step 3 (which is specified in clause 9.3.;.3). &n that case the followin steps ;=<

may be combined into 'etwor# Triered "ervice /eDuest procedure or be performed stand=alone. &f only the

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Eo" parameter /P is modified and if the 2 is in 21M &852 state the MM2 shall s#ip the 'etwor# Triered"ervice /eDuest. &n that case the followin steps ;=C are also s#ipped and the MM2 sends an pdate 0earer

/esponse to the "ervin G?.

'OT2 3H &f &"/ is activated and the "ervin G? does not have a downlin# ",= and the "G"' has notified the

"ervin G? that the 2 has moved to PMM=&852 or "T'80 state- the "ervin G? sends 8ownlin#

8ata 'otification to trier MM2 and "G"' to pae the 2 (as specified in clause 9.3.;.3) beforesendin the pdate 0earer /eDuest messae.

;. The MM2 builds a "ession Manaement /eDuest includin the PT&- 2P" 0earer Eo" parameters (ecludin

/P)- T7T- P'=M0/ and 2P" 0earer &dentity. &f the 2 has T/' or G2/' capabilities and thenetwor# supports mobility to T/' or G2/'- the MM2 uses the 2P" 0earer Eo" parameters to derive the

correspondin P8P contet parameters Eo" 'eotiated (/CC Eo" profile)- /adio Priority and Pac#et 7low &dand includes them in the "ession Manaement /eDuest. &f the 2 indicated in the 2 'etwor# 1apability it does

not support 0"" pac#et flow procedures- then the MM2 shall not include the Pac#et 7low &d. &f the P'=M0/has chaned the MM2 may update the 2=M0/ if appropriate. The MM2 then sends the 0earer Modify

/eDuest (2P" 0earer &dentity- 2P" 0earer Eo"- "ession Manaement /eDuest- 2=M0/) messae to thee'ode0.

9. The e'ode0 maps the modified 2P" 0earer Eo" to the /adio 0earer Eo". &t then sinals a //1 1onnection

/econfiuration (/adio 0earer Eo"- "ession Manaement /eDuest- 2P" /0 &dentity) messae to the 2. The2 shall store the Eo" 'eotiated- /adio Priority- Pac#et 7low &d- which it received in the "ession Manaement/eDuest- for use when accessin via G2/' or T/'. &f the P'=M0/ has chaned- the 2 stores the

modified P'=M0/ value and sets the M0/ parameter of the correspondin non=G0/ P8P contets (of this

P8' connection) to the new value. The 2 uses the uplin# pac#et filter (5 T7T) to determine the mappin oftraffic flows to the radio bearer. The 2 may provide 2P" 0earer Eo" parameters to the application handlin the

traffic flow(s). The application usae of the 2P" 0earer Eo" is implementation dependent. The 2 shall not

reject the /adio 0earer Modify /eDuest on the basis of the 2P" 0earer Eo" parameters contained in the "essionManaement /eDuest. The 2 shall set its T&' to LGT&L if the modified 2P" bearer was established before

&"/ activation.

'OT2 ;H The details of the /adio 0earer Eo" are specified in T" 3:.3++ J9K.

:. The 2 ac#nowledes the radio bearer modification to the e'ode0 with a //1 1onnection /econfiuration1omplete messae.

<. The e'ode0 ac#nowledes the bearer modification to the MM2 with a 0earer Modify /esponse (2P" 0earer

&dentity) messae. ?ith this messae- the e'ode0 indicates whether the reDuested 2P" 0earer Eo" could be

allocated or not.

The MM2 shall be prepared to receive this messae either before or after the "ession Manaement /esponse

messae (sent in step C).

>. The 2 '" layer builds a "ession Manaement /esponse includin 2P" 0earer &dentity. The 2 then sends a

8irect Transfer ("ession Manaement /esponse) messae to the e'ode0.

C. The e'ode0 sends an plin# '" Transport ("ession Manaement /esponse) messae to the MM2.

,+. pon reception of the 0earer Modify /esponse messae in step < and the "ession Manaement /esponsemessae in step C- the MM2 ac#nowledes the bearer modification to the "ervin G? by sendin an pdate

0earer /esponse (2P" 0earer &dentity- ser 5ocation &nformation (21G&)) messae.

,,. The "ervin G? ac#nowledes the bearer modification to the P8' G? by sendin an pdate 0earer /esponse

(2P" 0earer &dentity- ser 5ocation &nformation (21G&)) messae.

,*. &f the 0earer modification procedure was triered by a P11 8ecision Provision messae from the P1/7- theP8' G? indicates to the P1/7 whether the reDuested P11 decision (Eo" policy) could be enforced or not by

sendin a Provision c# messae allowin the completion of the P1/7=&nitiated &P=1' "ession Modification

procedure or the P127 initiated &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K- after thecompletion of &P=1' bearer sinallin. &f reDuested by the P1/7 the P8' G? indicates ser 5ocation

&nformation andAor 2 Time None &nformation to the P1/7 as defined in T" *3.*+3 J:K.

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'OT2 9H The eact sinallin of step , and ,* (e.. for local brea#=out) is outside the scope of this specification.This sinallin and its interaction with the bearer activation procedure are to be specified in

T" *3.*+3 J:K. "teps , and ,* are included here only for completeness.

!.4.2.2 7SS :'itiate# Suscrie# "S M"#iicati"'

The @"" &nitiated "ubscribed Eo" Modification for a GTP=based "9A"> is depicted in fiure 9.;.*.*=,.

(A)

UE e*"#eC MME Ser5i'g GA P* GA P+R 7SS

2. M"#i; Cearer +"66a'#

3. M"#i; Cearer +"66a'#

!. U%#ate Cearer ReDuest

(>)

. Pr"ce#ure as i' TS 23.401, ste%s 3 t" 10 "igure !.4.2.1-1 "r ste%s 3 t" < " igure !.4.3-1

. U%#ate Cearer Res%"'se

1. :'sert Suscrier #ata


<. Pr"5isi"' &cB

. 2a. UE +t/t U%#ate

1a. :'sert Suscrier #ata &cB

0i1ure +''&'&$%2 SS 7nitiated Su4scri4ed DoS 8odification

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () and steps (0) are defined in T" *3.;+* J*K. "teps 3- ;- 9- <

and > concern GTP based "9A">.

,. The @"" sends an &nsert "ubscriber 8ata (&M"&- "ubscription 8ata) messae to the MM2. The "ubscription

8ata includes 2P" subscribed Eo" (E1&- /P) and the subscribed 2=M0/ and P'=M0/.

,a. The MM2 updates the stored "ubscription 8ata and ac#nowledes the &nsert "ubscriber 8ata messae byreturnin an &nsert "ubscriber 8ata c# (&M"&) messae to the @"" (see clause 9.3.C.*).

*a &f only the subscribed 2=M0/ has been modified- the MM2 calculates a new 2=M0/ value as described

in clause ;.<.3 and may then sinal a modified 2=M0/ value to the e'ode0 by usin ",=P 2 1ontetModification Procedure. The @"" &nitiated "ubscribed Eo" Modification Procedure ends after completion of the

2 1ontet Modification Procedure.

*b. &f the E1& andAor /P andAor subscribed P'=M0/ has been modified and there is related active P8'

connection with the modified Eo" Profile the MM2 sends the Modify 0earer 1ommand (2P" 0earer &dentity-2P" 0earer Eo"- P'=M0/) messae to the "ervin G?. The 2P" 0earer &dentity identifies the default

bearer of the affected P8' connection. The 2P" 0earer Eo" contains the 2P" subscribed Eo" profile to beupdated.

3. The "ervin G? sends the Modify 0earer 1ommand (2P" 0earer &dentity- 2P" 0earer Eo"- P'=M0/)messae to the P8' G?.

;. &f P11 infrastructure is deployed- the P8' G? informs the P1/7 about the updated 2P" 0earer Eo" and P'=M0/. The P1/7 sends new updated P11 decision to the P8' G?. This corresponds to the P127=initiated

&P=1' "ession Modification procedure as defined in T" *3.*+3 J:K.

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The P1/7 may modify the P'=M0/ and the Eo" parameters (E1& and /P) associated with the default bearer in the response to the P8' G? as defined in T" *3.*+3 J:K.

9. The P8' G? modifies the default bearer of each P8' connection correspondin to the P' for whichsubscribed Eo" has been modified. &f the subscribed /P parameter has been chaned- the P8' G? shall also

modify all dedicated 2P" bearers havin the previously subscribed /P value unless superseded by P1/7

decision. The P8' G? then sends the pdate 0earer /eDuest (2P" 0earer &dentity- 2P" 0earer Eo"- T7T-P'=M0/) messae to the "ervin G?.

'OT2 *H s no PT& is included the MM2 use protocol specific details- as described in T" *C.*<; J;3K- to determine

if the pdate 0earer /eDuest was triered by this procedure or not.

:. &f the E1& andAor /P parameter(s) have been modified- steps 3 to ,+- as described in clause 9.;.*.,- 7iure

9.;.*.,=,- are invo#ed. &f neither the E1& nor the /P have been modified- but instead only the P'=M0/was updated- steps 3 to >- as described in clause 9.;.3- 7iure 9.;.3=,- are invo#ed.

<. The "ervin G? ac#nowledes the bearer modification to the P8' G? by sendin an pdate 0earer /esponse(2P" 0earer &dentity- ser 5ocation &nformation (21G&)) messae. &f the bearer modification fails the P8' G?

deletes the concerned 2P" 0earer.

>. The P8' G? indicates to the P1/7 whether the reDuested P11 decision was enforced or not by sendin aProvision c# messae.

!.4.3 P* GA i'itiate# earer 6"#iicati"' ith"ut earer "S u%#ate

The bearer modification procedure without bearer Eo" update is used to update the T7T for an active default or

dedicated bearer- to modify the P'=M0/- to retrieve ser 5ocation from the MM2 or to instruct the MM2 (e.. toactivateAdeactivate the location reportin).

The procedure for a GTP based "9A"> is depicted in fiure 9.;.3=,. &n this procedure there is no need to update theunderlyin radio bearer(s). This procedure may be triered if the P'=M0/ is chaned by the P1/7AP8' G?.

(A)


4. "'$i'B *&S Tra's%"rt

!. irect Tra'ser


e*"#eC UE

( > ) 10. :P-+&* Sessi"'M"#iicati"'



. irect Tra'ser. U%$i'B *&S Tra's%"rt

<. U%#ate Cearer Res%"'se

. U%#ate Cearer Res%"'se

0i1ure +''3$%2 >earer 8odification Procedure #ithout >earer DoS !pdate

'OT2 ,H "teps 3=> are common for architecture variants with GTP based "9A"> and PM&P=based "9A">. 7or anPM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "teps ,- *- C and ,+

concern GTP based "9A">. "teps 3=> may also be used within the @"" &nitiated "ubscribed Eo"Modification.

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,. &f dynamic P11 is deployed- the P1/7 sends a P11 decision provision (Eo" policy) messae to the P8' G?.This corresponds to the beinnin of the P1/7=initiated &P=1' "ession Modification procedure or to the P1/7

response in the P127 initiated &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K- up to the point that the P8' G? reDuests &P=1' 0earer "inallin. The P11 decision provision messae may indicate

that ser 5ocation &nformation andAor 2 Time None &nformation is to be provided to the P1/7 as defined inT" *3.*+3 J:K. &f dynamic P11 is not deployed- the P8' G? may apply local Eo" policy.

*. The P8' G? uses this Eo" policy to determine that a service data flow shall be areated to or removed froman active bearer. The P8' G? enerates the T7T and determines that no update of the 2P" 0earer Eo" is

needed. The P8' G? then sends the pdate 0earer /eDuest (PT&- 2P" 0earer &dentity- P'=M0/- T7T-/etrieve 5ocation) messae to the "ervin G?. The Procedure Transaction &d (PT&) parameter is used when the

procedure was initiated by a 2 /eDuested 0earer /esource Modification procedure = see clause 9.;.9. L/etrieve

5ocationL is indicated if reDuested by the P1/7.

3. The "ervin G? sends the pdate 0earer /eDuest (PT&- 2P" 0earer &dentity- P'=M0/- T7T- /etrieve5ocation) messae to the MM2. &f the 2 is in 21M=&852 state the MM2 will trier the 'etwor# Triered

"ervice /eDuest from step 3 (which is specified in clause 9.3.;.3). &n that case the followin steps ;=< may becombined into 'etwor# Triered "ervice /eDuest procedure or be performed stand=alone. &f neither the T7T

nor the P'=M0/ have been modified- the MM2 shall s#ip the followin steps ;=<.

'OT2 *H &f &"/ is activated and the "ervin G? does not have a downlin# ",= and the "G"' has notified the"ervin G? that the 2 has moved to PMM=&852 or "T'80 state- the "ervin G? sends 8ownlin#8ata 'otification to trier MM2 and "G"' to pae the 2 (as specified in clause 9.3.;.3) before

sendin the pdate 0earer /eDuest messae.

;. The MM2 builds a "ession Manaement /eDuest messae includin the T7T- P'=M0/ and 2P" 0earer

&dentity. The MM2 then sends a 8ownlin# '" Transport ("ession Manaement 1onfiuration) messae to thee'ode0. &f the P' M0/ has chaned- the MM2 may also update the 2 M0/. nd if the 2=M0/ is

updated- the MM2 sinal a modified 2=M0/ value to the e'ode0 by usin ",=P 2 1ontet ModificationProcedure.

9. The e'ode0 sends the 8irect Transfer ("ession Manaement /eDuest) messae to the 2. The 2 uses theuplin# pac#et filter (5 T7T) to determine the mappin of traffic flows to the radio bearer. The 2 stores the

modified P'=M0/ value and sets the M0/ parameter of the correspondin non=G0/ P8P contets (of thisP8' connection) to the new value. The 2 shall set its T&' to LGT&L if the modified 2P" bearer was

established before &"/ activation.

:. The 2 '" layer builds a "ession Manaement /esponse includin 2P" 0earer &dentity. The 2 then sends a

8irect Transfer ("ession Manaement /esponse) messae to the e'ode0.

<. The e'ode0 sends an plin# '" Transport ("ession Manaement /esponse) messae to the MM2.

>. &f the procedure is performed without steps ;=< and location retrieval is reDuested and the 2 is21M1O''21T28 and unless the MM2 is confiured not to retrieve 21G& from the e'ode0 under this

condition- the MM2 uses the 5ocation /eportin Procedure described in clause 9.C., to retrieve the 21G& fromthe e'ode0. The MM2 ac#nowledes the bearer modification to the "ervin G? by sendin an pdate 0earer

/esponse (2P" 0earer &dentity- ser 5ocation &nformation (21G&)) messae. The MM2 includes the last #nownser 5ocation information.

'OT2 3H 0ased on operator policy and local reulation the MM2 may- instead of usin the 5ocation /eportinProcedure described in clause 9.C., to retrieve the 21G& from the e'ode0- use the last #nown ser

5ocation information obtained from e.. attach procedure- trac#in area update procedure- etc.

C. The "ervin G? ac#nowledes the bearer modification to the P8' G? by sendin an pdate 0earer /esponse

(2P" 0earer &dentity- ser 5ocation &nformation (21G&)) messae.

,+. &f the bearer modification procedure was triered by a P11 8ecision Provision messae from the P1/7- the

P8' G? indicates to the P1/7 whether the reDuested P11 decision (Eo" policy) could be enforced or not bysendin a Provision c# messae. This then allows the P1/7=&nitiated &P=1' "ession Modification procedure

or the P127 initiated &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K to continue and

eventually conclude- proceedin after the completion of &P=1' bearer sinallin. &f reDuested by the P1/7 theP8' G? indicates ser 5ocation &nformation andAor 2 Time None &nformation to the P1/7 as defined in

T" *3.*+3 J:K.

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'OT2 ;H The eact sinallin of step , and ,+ (e.. for local brea#=out) is outside the scope of this specification.This sinallin and its interaction with the bearer activation procedure are to be specified in

T" *3.*+3 J:K. "teps , and ,+ are included here only for completeness.

!.4.4 Cearer #eacti5ati"'

!.4.4.1 P* GA i'itiate# earer #eacti5ati"'

The bearer deactivation procedure for a GTP based "9A"> is depicted in fiure 9.;.;.,=,. This procedure can be used to

deactivate a dedicated bearer or deactivate all bearers belonin to a P8' address. &f the default bearer belonin to aP8' connection is deactivated- the P8' G? deactivates all bearers belonin to the P8' connection.

(A)

3. e$ete Cearer ReDuest


!. RR+ +"''ecti"' Rec"'igurati"'

2. e$ete Cearer ReDuest

a. RR+ +"''ecti"' Rec"'igurati"' c"6%$ete

. eacti5ate Cearer Res%"'se

e*"#eC UE


3a. e$ete Cearer ReDuest

SGS*

a. irect Tra'ser

4c. eacti5ate Cearer ReDuest

4a. etach ReDuest

<. e$ete Cearer Res%"'se

<a. e$ete Cearer Res%"'se

. eacti5ate EPS Cearer +"'te/t &cce%t

c. etach &cce%t


7SS

(>)


. e$ete Cearer Res%"'se

4. Triggeri'g "r reacti5ati"' i' E+M-:LE

0i1ure +'''%$%2 P=" GB 7nitiated >earer =eactivation

'OT2 ,H "teps 3=> are common for architecture variants with GTP based "9A"> and PM&P=based "9A">. 7or an

PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "teps ,- *- C and ,+concern GTP=based "9A">.

,. &f dynamic P11 is not deployed- the P8' G? is triered to initiate the 0earer 8eactivation procedure dueeither a Eo" policy or on reDuest from the MM2 (as outlined in clause 9.;.;.*) or on intra=node sinallin

reDuest from the @e'0 to release the 5&P P8' 1onnection. Optionally- the P1/7 sends Eo" policy to theP8' G?. This corresponds to the initial steps of the P1/7=initiated &P=1' "ession Modification procedure or

the response to the P127 initiated &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K- up tothe point that the P8' G? reDuests &P=1' 0earer "inallin. The P11 decision provision messae may

indicate that ser 5ocation &nformation andAor 2 Time None &nformation is to be provided to the P1/7 asdefined in T" *3.*+3 J:K. &f dynamic P11 is not deployed- the P8' G? may apply local Eo" policy. The P8'

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G? initiated 0earer deactivation is also performed when handovers occur from 3GPP to non=3GPP- in whichcase- the default bearer and all the dedicated bearers associated with the P8' address are released- but the P8'

address is #ept in the P8' G?.

7or an emerency P8' connection the P8' G? initiates the deactivation of all bearers of that emerency P8'

connection when the P8' connection is inactive (i.e. not transferrin any pac#ets) for a confiured period of

time or when triered by dynamic P11.

*. The P8' G? sends a 8elete 0earer /eDuest (PT&- 2P" 0earer &dentity- 1auses) messae to the "ervin G?.

The Procedure Transaction &d (PT&) parameter in this step and in the followin steps is only used when the

procedure was initiated by a 2 /eDuested 0earer /esource Modification Procedure = see clause 9.;.9. Thismessae can include an indication that all bearers belonin to that P8' connection shall be released. The P8'

G? includes $1ause$ &2 in the 8elete 0earer /eDuest messae and sets the &2 to $/T chaned from 3GPP to 'on=3GPP$ if the 8elete 0earer /eDuest messae is caused by a handover from 3GPP to non=3GPP.

3a. The "ervin G? sends the 8elete 0earer /eDuest (PT&- 2P" 0earer &dentity- 1ause) messae to the MM2. Thismessae can include an indication that all bearers belonin to that P8' connection shall be released.

3b. &f &"/ is activated- the "ervin G? sends the 8elete 0earer /eDuest (PT&- 2P" 0earer &dentity- 1ause) messaeto the "G"'. This messae can include an indication that all bearers belonin to that P8' connection shall be

released- and the "G"' releases all bearer resources of the P8' connection.

'OT2 *H &f all the bearers belonin to a 2 are released due to a handover from 3GPP to non=3GPP- the "G"'

chanes the MM state of the 2 to &852 (G2/' networ#) or PMM=82T1@28 (T/' networ#).

&f &"/ is activated- upon receivin 8elete 0earer /eDuest from "G? for the last P8' connection for a iven

2- MM2 shall locally de=activate &"/.

'OT2 3H &n this case- "G"' locally de=activates &"/ as well (see T" *3.+:+ J<K).

"teps ; to < are not performed if at least one of the followin three conditions is fulfilledH

(i) The 2 is in 21M=&852 and the last P8' connection of the 2 is not bein deleted and the 8elete 0earer

/eDuest received from the "ervin G? does not contain the cause Lreactivation reDuestedL- which has been sent

from the P8' G?I

(ii) 2 is in 21M=&852 and the last P8' connection is deleted due to &"/ deactivationI

(iii) 2 is in 21M=&852 and the last P8' connection is deleted in 3GPP due to handover to non=3GPP access.

?hen steps ; to < are not performed- the 2P" bearer state is synchroni!ed between the 2 and the networ# at the net21M=&852 to 21M=1O''21T28 transition (e.. "ervice /eDuest or T procedure).

;a. &f the last P8' connection of the 2 is bein released and the bearer deletion is neither due to &"/ deactivationnor due to handover to non=3GPP accesses- the MM2 eplicitly detaches the 2 by sendin a 8etach /eDuest

messae to the 2. &f the 2 is in 21M=&852 state the MM2 initiates pain via 'etwor# Triered "ervice/eDuest procedure in clause 9.3.;.3 from step 3a onwards in order to inform 2 of the reDuest. "teps ;b to <b

are s#ipped in this case- and the procedure continues from step <c.

;b. &f the 2 is in 21M=&852 state and the reason for releasin P8' connection is Lreactivation reDuestedL- theMM2 initiates pain via 'etwor# Triered "ervice /eDuest procedure in clause 9.3.;.3 from step 3a onwards

in order to inform 2 of the reDuest and step ;c is performed after completion of the pain.

;c. &f the release of the bearer in 2=T/' has already been sinalled to the MM2- steps ;=< are omitted.Otherwise- if this is not the last P8' connection for the 2 which is bein released- the MM2 sends the ",=P

8eactivate 0earer /eDuest (2P" 0earer &dentity) messae to the e'ode0. The MM2 builds a '" 8eactivate2P" 0earer 1ontet /eDuest messae includin the 2P" 0earer &dentity- and includes it in the ",=P 8eactivate

0earer /eDuest messae. ?hen the bearer deactivation procedure was oriinally triered by a 2 reDuest- the '" 8eactivate 2P" 0earer 1ontet /eDuest messae includes the PT&.

9. The e'ode0 sends the //1 1onnection /econfiuration messae includin the 2P" /adio 0earer &dentity to

release and the '" 8eactivate 2P" 0earer 1ontet /eDuest messae to the 2.

:a. The 2 //1 releases the radio bearers indicated in the //1 messae in step 9- and indicates the radio bearerstatus to the 2 '". Then the 2 '" removes the 5 T7Ts and 2P" 0earer &dentity accordin to the radio

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bearer status indication from the 2 //1. The 2 responds to the //1 1onnection /econfiuration 1ompletemessae to the e'ode0.

:b. The e'ode0 ac#nowledes the bearer deactivation to the MM2 with a 8eactivate 0earer /esponse (2P" 0earer&dentity- 21G&- T&) messae.

The MM2 shall be prepared to receive this messae either before or after the "ession Manaement /esponse

messae sent in step <b- and before or after- any 8etach /eDuest messae sent in step <c.

<a The 2 '" layer builds a 8eactivate 2P" 0earer 1ontet ccept messae includin 2P" 0earer &dentity. The2 then sends a 8irect Transfer (8eactivate 2P" 0earer 1ontet ccept) messae to the e'ode0.

<b. The e'ode0 sends an plin# '" Transport (8eactivate 2P" 0earer 1ontet ccept) messae to the MM2.

<c. &f the 2 receives the 8etach /eDuest messae from the MM2 in the step ;a- the 2 sends a 8etach ccept

messae to the MM2 any time after step ;a. The e'ode0 forwards this '" messae to the MM2 alon withthe T&S21G& of the cell which the 2 is usin.

'OT2 ;H The 2 may not be able to send this messae- e.. when the 2 is out of coverae of 2=T/' due tomobility to non=3GPP access.

>a. fter reception of both the 8eactivate 0earer /esponse messae in step :b and the 8eactivate 2P" 0earer1ontet ccept messae in step <b- the MM2 deletes the bearer contet related to the deactivated 2P" bearer

and ac#nowledes the bearer deactivation to the "ervin G? by sendin a 8elete 0earer /esponse (2P" 0earer&dentity- ser 5ocation &nformation (21G&)) messae.

>b The "G"' deletes P8P 1ontet related to the deactivated 2P" bearer and ac#nowledes the bearer deactivationto the "ervin G? by sendin a 8elete 0earer /esponse (2P" 0earer &dentity- ser 5ocation &nformation

(1G&A"&)) messae.

C. &f &"/ is activated- after receivin the two 8elete 0earer /esponse messaes from the MM2 and the "G"'- or if

&"/ is not activated- after receivin the 8elete 0earer /esponse messaes from the MM2- the "ervin G?deletes the bearer contet related to the deactivated 2P" bearer ac#nowledes the bearer deactivation to the P8'

G? by sendin a 8elete 0earer /esponse (2P" 0earer &dentity- ser 5ocation &nformation (21G& or 1G&A"&))

messae. &f the MM2 andAor "G"' sent 2$s 5ocation &nformation andAor 2 Time None in step >a andAorstep >b- the "ervin G? includes the ser 5ocation &nformation andAor 2 Time None &nformation with theleast ae in this messae.

,+. The P8' G? deletes the bearer contet related to the deactivated 2P" bearer. &f the dedicated bearerdeactivation procedure was triered by receivin a P11 decision messae from the P1/7- the P8' G?

indicates to the P1/7 whether the reDuested P11 decision was successfully enforced by completin the P1/7=

initiated &P=1' "ession Modification procedure or the P127 initiated &P=1' "ession Modification procedureas defined in T" *3.*+3 J:K- proceedin after the completion of &P=1' bearer sinallin. &f reDuested by the

P1/7 the P8' G? indicates ser 5ocation &nformation andAor 2 Time None &nformation to the P1/7 as

defined in T" *3.*+3 J:K.

,,. &f the 2 is bein eplicitly detached- the MM2 releases the ",=MM2 sinallin connection for the 2 by

sendin an ", /elease 1ommand (1ause) messae to the e'ode0. The details of this step are covered in the L",/elease ProcedureL- as described in clause 9.3.9 by step ; to step :.

'OT2 9H The eact sinallin of step , and ,+ (e.. for local brea#=out) is outside the scope of this specification.This sinallin and its interaction with the dedicated bearer activation procedure are to be specified in

T" *3.*+3 J:K. "teps , and ,+ are included here only for completeness.

&f all the bearers belonin to a 2 are released- the MM2 shall chane the MM state of the 2 to 2MM=

82/2G&"T2/28 and the MM2 sends the ", /elease 1ommand to the e'ode0- which initiates the release of the //1connection for the iven 2 if it is not released yet- and returns an ", /elease 1omplete messae to the MM2.

&f all bearers of an emerency attached 2 are deactivated the MM2 may initiate the eplicit MM2=&nitiated 8etach procedure. /eardless of the outcome of any eplicit 8etach procedure the MM2 chanes the 2MM state of the 2 to

2MM=82/2G&"T2/28 and the MM2 sends the ", /elease 1ommand to the e'ode0 if it is not yet released.

&f the default bearer belonin to a P8' connection is deactivated- the MM2 determines the Maimum P'

/estriction for the remainin P8' connections and stores this new value for the Maimum P' /estriction. &n

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1ommand from the "=G? if reDuested by the P1/7 as defined in T" *3.*+3 J:K. The P1/7 sends an updatedP11 decision to the P8' G?.

'OT2 *H ser 5ocation &nformation and 2 Time None miht not be available if the MM2 or the "ervin G? areof a previous release and did not provide this information.

9. The P8' G? sends a 8elete 0earer /eDuest (2P" 0earer &dentity) messae to the "ervin G?.

:. The "ervin G? sends the 8elete 0earer /eDuest (2P" 0earer &dentity) messae to the MM2.

<. "teps between steps ; and <- as described in clause 9.;.;.,- are invo#ed. This is omitted if the bearer deactivationwas triered by the e'ode0 in step + and step ,.

This is also omitted if the MM2 initiated bearer release due to failed bearer set up durin handover- the 2 andthe MM2 deactivate the failed contets locally without peer=to peer 2"M sinallin.

>. The MM2 deletes the bearer contets related to the deactivated 2P" bearer and ac#nowledes the bearerdeactivation to the "ervin G? by sendin a 8elete 0earer /esponse (2P" 0earer &dentity- ser 5ocation

&nformation (21G&)) messae.

C. The "ervin G? deletes the bearer contet related to the deactivated 2P" bearer and ac#nowledes the bearer

deactivation to the P8' G? by sendin a 8elete 0earer /esponse (2P" 0earer &dentity) messae.

!.4.! UE reDueste# earer res"urce 6"#iicati"'

The 2 reDuested bearer resource modification procedure for an 2=T/' is depicted in fiure 9.;.9=,. The procedure

allows the 2 to reDuest for a modification of bearer resources (e.. allocation or release of resources) for one trafficflow areate with a specific Eo" demand. lternatively- the procedure allows the 2 to reDuest for the modification

of the pac#et filters used for an active traffic flow areate- without chanin Eo". &f accepted by the networ#- thereDuest invo#es either the 8edicated 0earer ctivation Procedure- the 0earer Modification Procedure or a dedicated

bearer is deactivated usin the P8' G? &nitiated 0earer 8eactivation Procedure. The procedure is used by the 2when the 2 already has a P8' connection with the P8' G?. 2 can send a subseDuent /eDuest 0earer /esource

Modification Messae before the previous procedure is completed.

&n this procedure the 2 sinals a Traffic reate 8escription (T8) which is a partial T7T- toether with a

Procedure Transaction &dentifier (PT&)- and an 2P" 0earer &dentity (when the T8 operation is modify- delete or add toan eistin pac#et filter). ?hen the T8 operation is modify or delete- the pac#et filter identifiers of the T8 are the

same as the T7T pac#et filter identifiers of the referenced 2P" 0earer (as the concatenation of the T7T pac#et filteridentifier and the 2P" 0earer identifier represents a uniDue pac#et filter identifier within the P8' connection)- for

which resources are bein modified. The T8 is released by the 2 after it has received a T7T related to the currentPT& from the networ#.


1. ReDuest Cearer Res"urce M"#iicati"'

2. Cearer Res"urce +"66a'#

e*"#eC UE

3 . Cearer Res"urce +"66a'#

(A) 4. P+E :'itiate# :P-+&*Sessi"' M"#iicati"', egi'

. P+E :'itiate# :P-+&*Sessi"' M"#iicati"', e'#

!. e#icate# earer acti5ati"' as %er igure !.4.1-1, r"6 ste% 2 t" 11N "rCearer 6"#iicati"' %r"ce#ure as %er igure !.4.2.1-1, r"6 ste% 2 t" 11, "r as %erigure !.4.3-1, r"6 ste% 2 t" N "re#icate# earer #eacti5ati"' %r"ce#ure as %er igure !.4.4.1-1, r"6 ste% 2 t" .

0i1ure +''+$%2 ! re:uested 4earer resource modification

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)%,.Release %&

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'OT2 ,H "teps ,- *- and 9 are common for architecture variants with GTP=based "9A"> and PM&P=based "9A">.The procedure steps mar#ed () differ in the case that PM&P=based "9A"> is employed and is defined in

T" *3.;+* J*K.

,. The 2 sends a /eDuest 0earer /esource Modification (50&- PT&- 2P" 0earer &dentity- Eo"- T8- Protocol

1onfiuration Options) messae to the MM2. &f the 2 was in 21M=&852 mode- this '" messae is preceded

by the "ervice /eDuest procedure.

The T8 indicates one reDuested operation (add- modify- or delete pac#et filters). &f traffic flows are added- the

T8 includes the pac#et filter(s) (consistin of the pac#et filter information includin pac#et filter precedence-

but without a pac#et filter identifier) to be added. The 2 also sends the E1& reDuested and G0/- if applicable-for the added traffic flows. &f the 2 wants to lin# the new pac#et filter(s) to an eistin pac#et filter to enable

the usae of eistin bearer resources for the new pac#et filter(s)- the 2 shall provide an eistin pac#et filteridentifier toether with the new pac#et filter(s). &f the new pac#et filter(s) are not lin#ed to an eistin pac#et

filter the 2 shall provide at least one 5 pac#et filter in the T8. &n case a downlin# only traffic flow(s) is to be added the 2 shall provide an 5 pac#et filter that effectively disallows any useful pac#et flows (see

clause ,9.3.3.; of T" *3.+:+ J<K for an eample of such pac#et filter).

'OT2 *H /eceivin at least one 5 pac#et filter from the 2 ensures that a valid state for the T7T settins of the

P8' connection as defined in clause ,9.3.+ of T" *3.+:+ J<K is maintained in case the T8 add operation

results in the establishment of a new dedicated 2P" bearer. &f a pre=/elease ,, 2 reDuests onlydownlin# pac#et filters in a T8 add operation without lin#in to an eistin pac#et filter- the P1/7adds in step ; an uplin# service data flow filter that effectively disallows any useful pac#et flows (see

clause ,9.3.3.; of T" *3.+:+ J<K for an eample of such pac#et filter) as defined in T" *3.*+3 J:K.

&f the 2 wants to chane the G0/ in addition- the 2 includes the G0/ reDuirement of the 2P" 0earer. The

T8 is released when the procedure is completed.

?hen only reDuestin for a modification of G0/ (i.e. decrease or increase)- the T8 shall include the eistin

pac#et filter identifier(s) for which the G0/ chane reDuest applies to. The 2 includes the G0/ reDuirement ofthe 2P" 0earer. The T8 is released when the procedure is completed.

?hen reDuestin for a modification of pac#et filter(s) (e.. chane of port number)- the T8 shall include

pac#et filter identifier(s) for which the chane reDuest applies to toether with the chaned pac#et filterinformation.

&f the 2 reDuests for deletion of traffic flows- the T8 includes the pac#et filter identifier(s) to be deleted. &f

the pac#et filters to be deleted were mapped to a G0/ 0earer- the 2 includes the new G0/ reDuirement of the2P" 0earer.

The 2 sends the 5in#ed 0earer &d (50&) only when the reDuested operation is add- to indicate to which P8'connection the additional bearer resource is lin#ed to. The 2P" 0earer &dentity is only sent when the reDuested

operation is modify or delete. The Procedure Transaction &d is dynamically allocated by the 2 for this procedure. The 2 should ensure as far as possible that previously used PT& values are not immediately reused.

The PT& is released when the procedure is completed. Protocol 1onfiuration Options may be used to transferapplication level parameters between the 2 and the P8' G? (see T" *3.**> J9*K)- and are sent transparently

throuh the MM2 and the "ervin G?.

*. The MM2 sends the 0earer /esource 1ommand (&M"&- 50&- PT&- 2P" 0earer &dentity- Eo"- T8- Protocol

1onfiuration Options) messae to the selected "ervin G?. The MM2 validates the reDuest usin the 5in#ed0earer &d. The same "ervin G? address is used by the MM2 as for the 2P" 0earer identified by the 5in#ed

0earer &d received in the /eDuest 0earer /esource Modification messae.

3. The "ervin G? sends the 0earer /esource 1ommand (&M"&- 50&- PT&- 2P" 0earer &dentity- Eo"- T8-

Protocol 1onfiuration Options) messae to the P8' G?. The "ervin G? sends the messae to the same P8'G? as for the 2P" 0earer identified by the 5in#ed 0earer &d.

;. The P8' G? may either apply a locally confiured Eo" policy- or it may interact with the P1/7 to trier theappropriate P11 decision- which may ta#e into account subscription information. This corresponds to the

beinnin of a P127=initiated &P=1' "ession Modification procedure as defined in T" *3.*+3 J:K- up to the

point that the P8' G? reDuests &P=1' 0earer "inallin. ?hen interactin with P1/7- the P8' G? provides to the P1/7 the content of the T8 and- if applicable- the G0/ chane (increase or decrease)

associated with the pac#et filter information contained in the T8. The G0/ chane is either calculated from

the current 0earer Eo" and the reDuested 0earer Eo" from the 2- or set to the reDuested G0/ if the T8

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)%,/Release %&

8/13/2019 23401-c30


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!.!.1 :'tra-E-UTR&* ha'#"5er

!.!.1.1 O2-ase# ha'#"5er

!.!.1.1.1 Ge'era$

These procedures are used to hand over a 2 from a source e'ode0 to a taret e'ode0 usin the F* reference point. &n

these procedures the MM2 is unchaned. Two procedures are defined dependin on whether the "ervin G? is

unchaned or is relocated. &n addition to the F* reference point between the source and taret e'ode0- the procedures

rely on the presence of ",=MM2 reference point between the MM2 and the source e'ode0 as well as between theMM2 and the taret e'ode0.

The handover preparation and eecution phases are performed as specified in T" 3:.3++ J9K. &f emerency bearerservices are onoin for the 2 handover to the taret e'ode0 is performed independent of the @andover /estriction

5ist. The MM2 chec#s- as part of the Trac#in rea pdate in the eecution phase- if the handover is to a restrictedarea and if so MM2 releases the non=emerency bearers as specified in clause 9.,+.3.

&f the servin P5M' chanes durin F*=based handover- the source e'ode0 shall indicate to the taret e'ode0 (in the

@andover /estriction 5ist) the P5M' selected to be the new "ervin P5M'.

?hen the 2 receives the handover command it will remove any 2P" bearers for which it did not receive thecorrespondin 2P" radio bearers in the taret cell. s part of handover eecution- downlin# and optionally also uplin#

pac#ets are forwarded from the source e'ode0 to the taret e'ode0. ?hen the 2 has arrived to the taret e'ode0-downlin# data forwarded from the source e'ode0 can be sent to it. plin# data from the 2 can be delivered via the

(source) "ervin G? to the P8' G? or optionally forwarded from the source e'ode0 to the taret e'ode0. Only thehandover completion phase is affected by a potential chane of the "ervin G?- the handover preparation and

eecution phases are identical.

&f the MM2 receives a rejection to a '" procedure (e.. dedicated bearer establishmentAmodificationAreleaseI location

reportin controlI '" messae transferI etc.) from the e'ode0 with an indication that an F* handover is in proress(see T" 3:.3++ J9K)- the MM2 shall reattempt the same '" procedure either when the handover is complete or the

handover is deemed to have failed- ecept in case of "ervin G? relocation. The failure is #nown by epiry of the timer

uardin the '" procedure.

&f durin the handover procedure the MM2 detects that the "ervin G? needs be relocated- the MM2 shall reject anyP8' G? initiated 2P" bearer(s) reDuest received since handover procedure started and shall include an indication that

the reDuest has been temporarily rejected due to handover procedure in proress. The rejection is forwarded by the"ervin G? to the P8' G?- with the same indication.

pon reception of a rejection for an 2P" bearer(s) P8' G? initiated procedure with an indication that the reDuest has been temporarily rejected due to handover procedure in proress- the P8' G? start a locally confiured uard timer.

The P8' G? shall re=attempt- up to a pre=confiured number of times- when either it detects that the handover iscompleted or has failed usin messae reception or at epiry of the uard timer.

&f the MM2 receives a rejection to a 2 1ontet Modification /eDuest messae with a 1" 7allbac# indicator from the

e'ode0 with an indication that an F* handover is in proress- the MM2 shall resend a 2 1ontet Modification/eDuest messae with 1" 7allbac# indicator to the taret e'ode0 when the handover is complete or to the source e'0

when the handover is deemed to have failed.

!.!.1.1.2 O2-ase# ha'#"5er ith"ut Ser5i'g GA re$"cati"'

This procedure is used to hand over a 2 from a source e'ode0 to a taret e'ode0 usin F* when the MM2 is

unchaned and decides that the "ervin G? is also unchaned. The presence of &P connectivity between the "ervinG? and the source e'ode0- as well as between the "ervin G? and the taret e'ode0 is assumed.

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3GPP TS &3'% *%&'3' (&%3$%&)%-%Release %&

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7a'#"5er c"6%$eti"'

(A)

UES"urcee*"#eC

Ser5i'gGA P* GAMME

Targete*"#eC

7a'#"5er e/ecuti"'

"'$i'B a'# u%$i'B #ata

7a'#"5er %re%arati"'

"rar#i'g " #ata

"'$i'B #ataU%$i'B #ata

1 Path Sitch ReDuest2 M"#i; Cearer ReDuest

4 M"#i; Cearer Res%"'se

Path Sitch ReDuest &cB

Re$ease Res"urce

"'$i'B #ata

!. E'# 6arBer

!. E'# 6arBer

<. TracBi'g &rea U%#ate %r"ce#ure

3a M"#i; Cearer ReDuest

3 M"#i; Cearer Res%"'se

0i1ure +'+'%'%'&$%2 E&$4ased handover #ithout Servin1 GB relocation

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K.

,. The taret e'ode0 sends a Path "witch /eDuest messae to MM2 to inform that the 2 has chaned cell-

includin the T&S21G& of the taret cell and the list of 2P" bearers to be switched. &f the taret cell is a 1"Gcell - the taret e'ode0 includes the 1"G &8 of the taret cell in Path "witch /eDuest messae. &f the taret cell

is in hybrid mode- it includes the 1"G &8 of the taret cell and 1"G ccess Mode set to LhybridL in the Path"witch /eDuest messae. Moreover- the Path "witch /eDuest messae contains the 1"G Membership "tatus &2

if the hybrid cell accessed by the 2 has a different 1"G from the source cell or the source cell does not have a1"G &8. The MM2 determines the 1"G membership based on the 1"G &8 and the taret P5M' id received

from the taret e'ode0.The MM2 updates the ser 1"G information based on the 1"G &8 and 1"G ccessMode received from the taret e'ode0 and 1"G membership if one of the parameters has chaned.

7or "&PTO at the 5ocal 'etwor# with stand=alone G? architecture- the taret e'ode0 shall include the 5ocal@ome 'etwor# &8 of the taret cell in the Path "witch /eDuest messae.

The MM2 determines that the "ervin G? can continue to serve the 2.

*. The MM2 sends a Modify 0earer /eDuest (e'ode0 address(es) and T2&8s for downlin# user plane for the

accepted 2P" bearers- &"/ ctivated) messae per P8' connection to the "ervin G? for each P8' connectionwhere the default bearer has been accepted by the taret e'ode0. &f the P8' G? reDuested 2$s location info-

the MM2 also includes the ser 5ocation &nformation &2 in this messae. &f the 2 Time None has chaned- theMM2 includes the 2 Time None &2 in this messae. &f the "ervin 'etwor# has chaned- the MM2 includes

the new "ervin 'etwor# &2 in this messae. &f &"/ was activated before this procedure- MM2 should maintain&"/. The 2 is informed about the &"/ status in the Trac#in rea pdate procedure. &f the "ervin G?

supports Modify ccess 0earers /eDuest procedure and if there is no need for the "G? to send the sinallin to

the PG?- the MM2 may send Modify ccess 0earers /eDuest (e'ode0 address(es) and T2&8s for downlin#user plane for the accepted 2P" bearers- &"/ ctivated) per 2 to the "ervin G? to optimi!e the sinallin.

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3GPP TS &3'% *%&'3' (&%3$%&)%-&Release %&

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&f the P8' G? reDuested 2$s ser 1"G information (determined from the 2 contet)- the MM2 includes theser 1"G &nformation &2 in this messae if the ser 1"G &nformation has chaned.

The MM2 uses the list of 2P" bearers to be switched- received in step ,- to determine whether any dedicated2P" bearers in the 2 contet have not been accepted by the taret e'ode0. The MM2 releases the non=

accepted dedicated bearers by trierin the bearer release procedure as specified in clause 9.;.;.*. &f the

"ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85 pac#et and does notsend a 8ownlin# 8ata 'otification to the MM2.

&f the default bearer of a P8' connection has not been accepted by the taret e'ode0 and there are multiple

P8' connections active- the MM2 shall consider all bearers of that P8' connection as failed and release thatP8' connection by trierin the MM2 reDuested P8' disconnection procedure specified in clause 9.,+.3.

&f none of the default 2P" bearers have been accepted by the taret e'ode0 or there is a 5&P P8' connectionthat has not been released- the MM2 shall act as specified in step :.

3. &f the "ervin G? has received the ser 5ocation &nformation &2 andAor the 2 Time None &2 andAor the"ervin 'etwor# &2 andAor ser 1"G &nformation &2 from the MM2 in step * the "ervin G? informs the P8'

G?(s) about this information that e.. can be used for charin- by sendin the messae Modify 0earer /eDuest("ervin G? ddress and T2&8- ser 5ocation &nformation &2 andAor 2 Time None &2 andAor "ervin

'etwor# &2 andAor ser 1"G &nformation &2) per P8' connection to the P8' G?(s) concerned. The "ervinG? shall return a Modify 0earer /esponse ("ervin G? address and T2&8 for uplin# traffic) messae to theMM2 as a response to a Modify 0earer /eDuest messae- or a Modify ccess 0earers /esponse ("ervin G?

address and T2&8 for uplin# traffic) as a response to a Modify ccess 0earers /eDuest messae. &f the "ervin

G? cannot serve the MM2 /eDuest in the Modify ccess 0earers /eDuest messae without "9A"> sinallin orwithout correspondin Gc sinallin when PM&P is used over the "9A"> interface- it shall respond to the MM2

with indicatin that the modifications are not limited to ",= bearers- and the MM2 shall repeat its reDuest usinModify 0earer /eDuest messae per P8' connection.

;. The "ervin G? starts sendin downlin# pac#ets to the taret e'ode0 usin the newly received address andT2&8s. Modify 0earer /esponse messae is sent bac# to the MM2.

9. &n order to assist the reorderin function in the taret e'ode0- the "ervin G? shall send one or more Lend

mar#erL pac#ets on the old path immediately after switchin the path as defined in T" 3:.3++ J9K-clause ,+.,.*.*.

:. The MM2 confirms the Path "witch /eDuest messae with the Path "witch /eDuest c# messae. &f the

2=M0/ is chaned- e.. all the 2P" bearers which are associated to the same P' are rejected in the tarete'ode0- the MM2 shall provide the updated value of 2=M0/ to the taret e'ode0 in the Path "witch

/eDuest c# messae.

&f the 1"G membership status was included in the Path "witch /eDuest messae- the MM2 shall include its

verified 1"G membership status in the Path "witch /eDuest c# messae.

&f some 2P" bearers have not been switched successfully in the core networ#- the MM2 shall indicate in the Path

"witch /eDuest c# messae which bearers failed to be established (see more detail in T" 3:.;,3 J3:K) and for

dedicated bearers initiate the bearer release procedure as specified in clause 9.;.;.* to release the core networ#

resources of the failed dedicated 2P" bearers. The taret e'ode0 shall delete the correspondin bearer contetswhen it is informed that bearers have not been established in the core networ#.

&f none of the default 2P" bearers have been switched successfully in the core networ# or if they have not beenaccepted by the taret e'ode0 or the 5&P P8' connection has not been released- the MM2 shall send a Path

"witch /eDuest 7ailure messae (see more detail in T" 3:.;,3 J3:K) to the taret e'ode0. The MM2 performseplicit detach of the 2 as described in the MM2 initiated detach procedure of clause 9.3.>.3.

<. 0y sendin /elease /esource the taret e'ode0 informs success of the handover to source e'ode0 and triersthe release of resources. This step is specified in T" 3:.3++ J9K.

>. The 2 initiates a Trac#in rea pdate procedure when one of the conditions listed in clause LTriers fortrac#in area updateL applies. &f &"/ is activated for the 2 when the MM2 receives the Trac#in rea pdate

/eDuest- the MM2 should maintain &"/ by indicatin &"/ ctivated in the Trac#in rea pdate cceptmessae.

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'OT2 *H &t is only a subset of the T update procedure that is performed by the MM2- since the 2 is in21M=1O''21T28 state and the MM2 is not chaned.

!.!.1.1.3 O2-ase# ha'#"5er ith Ser5i'g GA re$"cati"'

This procedure is used to hand over a 2 from a source e'ode0 to a taret e'ode0 usin F* when the MM2 is

unchaned and the MM2 decides that the "ervin G? is to be relocated. The presence of &P connectivity between thesource "ervin G? and the source e'ode0- between the source "ervin G? and the taret e'ode0- and between the

taret "ervin G? and taret e'ode0 is assumed. (&f there is no &P connectivity between taret e'ode0 and source"ervin G?- it is assumed that the ",=based handover procedure in clause 9.9.,.* shall be used instead.)

7a'#"5er c"6%$eti"'

UE S"urce e*"#eC

S"urceSer5i'g GA P* GA MME

TargetSer5i'g GA

Targete*"#eC

7a'#"5er e/ecuti"'

3a. M"#i; Cearer ReDuest

"'$i'B a'# u%$i'B #ata

7a'#"5er %re%arati"'

"rar#i'g " #ata

"'$i'B #ata U%$i'B #ata

1. Path Sitch ReDuest




!. Path Sitch ReDuest &cB

. Re$ease Res"urce

"'$i'B #ata

U%$i'B #ata

a. e$ete Sessi"' ReDuest


(A)

(>)

<. TracBi'g &rea U%#ate %r"ce#ure

0i1ure +'+'%'%'3$%2 E&$4ased handover #ith Servin1 GB relocation

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K.

,. The taret e'ode0 sends a Path "witch /eDuest messae to MM2 to inform that the 2 has chaned cell-

includin the 21G& of the taret cell and the list of 2P" bearers to be switched. &f the taret cell is a 1"G cell -the taret e'ode0 includes the 1"G &8 of the taret cell in Path "witch /eDuest messae. &f the taret cell is in

hybrid mode- it includes the 1"G &8 of the taret cell and 1"G ccess Mode set to LhybridL in the Path "witch/eDuest messae. Moreover- the Path "witch /eDuest messae contains the 1"G Membership "tatus &2 if the

hybrid cell accessed by the 2 has a different 1"G from the source cell or the source cell does not have a 1"G&8. The MM2 determines the 1"G membership based on the 1"G &8 and the taret P5M' id received from the

taret e'ode0. The MM2 updates the ser 1"G information based on the 1"G &8 and 1"G ccess Modereceived from the taret e'ode0 and 1"G membership if one of the parameters has chaned.

7or "&PTO at the 5ocal 'etwor# with stand=alone G? architecture- the taret e'ode0 shall include the 5ocal

@ome 'etwor# &8 of the taret cell in the Path "witch /eDuest messae.

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3GPP TS &3'% *%&'3' (&%3$%&)%-Release %&

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The MM2 determines that the "ervin G? is relocated and selects a new "ervin G? accordin to clause;.3.>.* on L"ervin G? "election 7unctionL.

'OT2 *H The MM2 #nows the "=G? "ervice rea with a T ranularity.

*. The MM2 sends a 1reate "ession /eDuest (bearer contet(s) with P8' G? addresses and T2&8s (for GTP=

based "9A">) or G/2 #eys (for PM&P=based "9A">) at the P8' G?(s) for uplin# traffic- e'ode0 address(es)

and T2&8s for downlin# user plane for the accepted 2P" bearers- the Protocol Type over "9A">- "ervin 'etwor#- 2 Time None) messae per P8' connection to the taret "ervin G? for each P8' connection

where the default bearer has been accepted by the taret e'ode0. The taret "ervin G? allocates the "=G?

addresses and T2&8s for the uplin# traffic on ", reference point (one T2&8 per bearer). The Protocol Typeover "9A"> is provided to "ervin G? which protocol should be used over "9A"> interface. &f the P8' G?

reDuested 2$s location info- the MM2 also includes the ser 5ocation &nformation &2 in this messae. &f theP8' G? reDuested 2$s ser 1"G information (determined from the 2 contet)- the MM2 includes the ser

1"G &nformation &2 in this messae if the ser 1"G &nformation has chaned.

The MM2 uses the list of 2P" bearers to be switched- received in step ,- to determine whether any dedicated

2P" bearers in the 2 contet have not been accepted by the taret e'ode0. The MM2 releases the non=accepted dedicated bearers by trierin the bearer release procedure as specified in clause 9.;.;.* via taret

"ervin G?. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85

pac#et and does not send a 8ownlin# 8ata 'otification to the MM2.

&f the default bearer of a P8' connection has not been accepted by the taret e'ode0 and there are multiple

P8' connections active- the MM2 shall consider all bearers of that P8' connection as failed and release that

P8' connection by trierin the MM2 reDuested P8' disconnection procedure specified in clause 9.,+.3 viasource "ervin G?.

&f none of the default 2P" bearers have been accepted by the taret e'ode0 or there is a 5&P P8' connectionthat has not been released- the MM2 shall act as specified in step 9.

3. The taret "ervin G? assins addresses and T2&8s (one per bearer) for downlin# traffic from the P8' G?.The "ervin G? allocates 85 T2&8s on "9A"> even for non=accepted bearers. &t sends a Modify 0earer /eDuest

("ervin G? addresses for user plane and T2&8(s)- "ervin 'etwor#- P8' 1harin Pause "upport &ndication)

messae per P8' connection to the P8' G?(s). The "=G? also includes ser 5ocation &nformation &2 andAor2 Time None &2 andAor ser 1"G &nformation &2 if it is present in step *. The P8' G? updates its contet

field and returns a Modify 0earer /esponse (1harin &d- M"&"8'- P8' 1harin Pause 2nabled &ndication (ifP8' G? has chosen to enable the function)- etc.) messae to the "ervin G?. The M"&"8' is included if the

P8' G? has it stored in its 2 contet. The P8' G? starts sendin downlin# pac#ets to the taret G? usin

the newly received address and T2&8s. These downlin# pac#ets will use the new downlin# path via the taret"ervin G? to the taret e'ode0. The "ervin G? shall allocate T2&8s for the failed bearers and inform to the

MM2.


immediately after switchin the path in order to assist the reorderin function in the taret e'ode0. The source"ervin G? shall forward the Lend mar#erL pac#ets to the source e'ode0.

;. The taret "ervin G? sends a 1reate "ession /esponse ("ervin G? addresses and uplin# T2&8(s) for user plane) messae bac# to the taret MM2. The MM2 starts a timer- to be used in step <.

9. The MM2 confirms the Path "witch /eDuest messae with the Path "witch /eDuest c# ("ervin G? addressesand uplin# T2&8(s) for user plane) messae. &f the 2=M0/ is chaned- e.. all the 2P" bearers which are

associated to the same P' are rejected in the taret e'ode0- the MM2 shall provide the updated value of2=M0/ to the taret e'ode0 in the Path "witch /eDuest c# messae. The taret e'ode0 starts usin the

new "ervin G? address(es) and T2&8(s) for forwardin subseDuent uplin# pac#ets.

&f the 1"G membership status was included in the Path "witch /eDuest messae- the MM2 shall include its

verified 1"G membership status in the Path "witch /eDuest c# messae.

&f some 2P" bearers have not been switched successfully in the core networ#- the MM2 shall indicate in the Path

"witch /eDuest c# messae which bearers failed to be established (see more detail in T" 3:.;,3 J3:K) and for

dedicated bearers initiate the bearer release procedure as specified in clause 9.;.;.* to release the core networ#resources of the failed dedicated 2P" bearers. The taret e'ode0 shall delete the correspondin bearer contets

when it is informed that bearers have not been established in the core networ#.

3GPP

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&f none of the default 2P" bearers have been switched successfully in the core networ# or if they have not beenaccepted by the taret e'ode0 or the 5&P P8' connection has not been released- the MM2 shall send a Path

"witch /eDuest 7ailure messae (see more detail in T" 3:.;,3 J3:K) to the taret e'ode0. The MM2 performseplicit detach of the 2 as described in the MM2 initiated detach procedure of clause 9.3.>.3.

:. 0y sendin /elease /esource the taret e'ode0 informs success of the handover to source e'ode0 and triers

the release of resources. This step is specified in T" 3:.3++ J9K.

<. ?hen the timer has epired after step ;- the source MM2 releases the bearer(s) in the source "ervin G? by

sendin a 8elete "ession /eDuest messae (1ause- Operation &ndication). The operation &ndication fla is not

set- that indicates to the "ource "ervin G? that the "ource "ervin G? shall not initiate a delete proceduretowards the P8' G?. The "ource "ervin G? ac#nowledes with 8elete "ession /esponse messaes. &f &"/

has been activated before this procedure- the cause indicates to the "ource "=G? that the "ource "=G? shalldelete the bearer resources on the other old 1' node by sendin 8elete 0earer /eDuest messae(s) to that 1'

node.

>. The 2 initiates a Trac#in rea pdate procedure when one of the conditions listed in clause LTriers for

trac#in area updateL applies.

'OT2 3H &t is only a subset of the T update procedure that is performed by the MM2- since the 2 is in

21M=1O''21T28 state. The 2 is informed about the &"/ status in the Trac#in rea pdate procedure.

!.!.1.2 S1-ase# ha'#"5er

!.!.1.2.1 Ge'era$

The ",=based handover procedure is used when the F*=based handover cannot be used. The source e'ode0 initiates a

handover by sendin @andover /eDuired messae over the ",=MM2 reference point. This procedure may relocate theMM2 andAor the "ervin G?. The source MM2 selects the taret MM2. The MM2 should not be relocated durin

inter=e'ode0 handover unless the 2 leaves the MM2 Pool rea where the 2 is served. The MM2 (taret MM2 forMM2 relocation) determines if the "ervin G? needs to be relocated. &f the "ervin G? needs to be relocated the

MM2 selects the taret "ervin G?- as specified in clause ;.3.>.* on "ervin G? selection function.

The source e'ode0 decides which of the 2P" bearers are subject for forwardin of downlin# and optionally also uplin#

data pac#ets from the source e'ode0 to the taret e'ode0. The 2P1 does not chane the decisions ta#en by the /'node. Pac#et forwardin can ta#e place either directly from the source e'ode0 to the taret e'ode0- or indirectly from

the source e'ode0 to the taret e'ode0 via the source and taret "ervin G?s (or if the "ervin G? is not relocated-only the sinle "ervin G?).

The availability of a direct forwardin path is determined in the source e'ode0 and indicated to the source MM2. &f F*connectivity is available between the source and taret e'ode0s- a direct forwardin path is available.

&f a direct forwardin path is not available- indirect forwardin may be used. The source MM2 uses the indication fromthe source e'ode0 to determine whether to apply indirect forwardin. The source MM2 indicates to the taret MM2

whether indirect forwardin should apply. 0ased on this indication- the taret MM2 determines whether it applies

indirect forwardin.

&f the MM2 receives a rejection to an ", interface procedure (e.. dedicated bearer establishmentAmodificationAreleaseIlocation reportin controlI '" messae transferI etc.) from the e'ode0 with an indication that an ", handover is in

proress (see T" 3:.3++ J9K)- the MM2 shall reattempt the same ", interface procedure when either the handover iscomplete or is deemed to have failed if the MM2 is still the servin MM2- ecept in case of "ervin G? relocation. &f

the ", handover chanes the servin MM2- the source MM2 shall terminate any other onoin ", interface proceduresecept the handover procedure.

&n order to minimise the number of procedures rejected by the e'ode0- the MM2 should pause non=handover related", interface procedures (e.. downlin# '" messae transfer- 2=/0 "etupAModifyA/elease- etc.) while a handover is

onoin (i.e. from the time that a @andover /eDuired has been received until either the @andover procedure hassucceeded (@andover 'otify) or failed (@andover 7ailure)) and continue them once the @andover procedure has

completed if the MM2 is still the servin MM2- ecept in case of "ervin G? relocation.

&f durin the handover procedure the MM2 detects that the "ervin G? orAand the MM2 needs be relocated- the MM2

shall reject any P8' G? initiated 2P" bearer(s) reDuest received since handover procedure started and shall include an

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indication that the reDuest has been temporarily rejected due to handover procedure in proress. The rejection isforwarded by the "ervin G? to the P8' G?- with the same indication.

pon reception of a rejection for an 2P" bearer(s) P8' G? initiated procedure with an indication that the reDuest has been temporarily rejected due to handover procedure in proress- the P8' G? start a locally confiured uard timer.

The P8' G? shall re=attempt- up to a pre=confiured number of times- when either it detects that the handover is

completed or has failed usin messae reception or at epiry of the uard timer.

&f emerency bearer services are onoin for the 2- handover to the taret e'ode0 is performed independent of the

@andover /estriction 5ist. The MM2 chec#s- as part of the Trac#in rea pdate in the eecution phase- if the

handover is to a restricted area and if so MM2 releases the non=emerency bearers as specified in clause 9.,+.3.

&f emerency bearer services are onoin for the 2- handover to the taret 1"G cell is performed independent of the

2$s 1"G subscription. &f the handover is to a 1"G cell that the 2 is not subscribed- the taret e'ode0 only acceptsthe emerency bearers and the taret MM2 releases the non=emerency P8' connections that were not accepted by the

taret e'ode0 as specified in clause 9.,+.3.

&f the MM2 receives a rejection to a 2 1ontet modification /eDuest messae with a 1" 7allbac# indication from the

e'ode0 with an indication that an ", handover is in proress- the MM2 shall resend a 2 1ontet Modification/eDuest messae with 1" 7allbac# indicator to the taret e'ode0 when either the handover is complete or to the source

e'ode0 when the handover is deemed to have failed if the MM2 is still the servin MM2.

7or inter=P5M' handover to a 1"G cell- if the source MM2 has the 1"G=&8 list of the taret P5M'- the source MM2

shall use it to validate the 1"G membership of the 2 in the taret 1"G cell. Otherwise- based on operator$sconfiuration the source MM2 may allow the handover by validatin the 1"G membership of the 2 in the taret 1"G

cell usin the 1"G=&8 list of the reistered P5M'=&8. &f neither the 1"G=&8 list of the taret P5M' nor the operator$sconfiuration permits the handover-the source MM2 shall reject the handover due to no 1"G membership information

of the taret P5M'=&8.

'OT2H &nter=P5M' handover to a 1"G cell in a P5M' which is not an eDuivalent P5M' for the 2 is not

supported.

!.!.1.2.2 S1-ase# ha'#"5er, '"r6a$

This procedure describes the ",=based handover in the normal case- clause 9.9.,.*.3 describes it when the procedure isrejected by the taret e'ode0 or the taret MM2 and clause 9.9.,.*.; describes when the procedure is canceled by the

source e'ode0.

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UES"urcee*"#eC

S"urceMME

S"urceSer5i'g GA P* GA

TargetMME

Target Ser5i'gGA

Targete*"#eC

etach r"6 "$# ce$$ a'#s;'chr"'iFe t" 'e ce$$

7SS



1!. M"#i; Cearer ReDuest

"'$i'B User P$a'e #ata

2. 7a'#"5er ReDuire#


1. ecisi"' t" trigger are$"cati"' 5ia S1

3. "rar# Re$"cati"' ReDuest

!. 7a'#"5er ReDuest

!a. 7a'#"5er ReDuest &cB'"$e#ge

. "rar# Re$"cati"' Res%"'se

. 7a'#"5er +"66a'#

a. 7a'#"5er +"66a'#

11a. 8'$; "r irect "rar#i'g " #ata

12. 7a'#"5er +"'ir6"'$i'B #ata

13. 7a'#"5er *"ti;

14. "rar# Re$"cati"' +"6%$ete *"tiicati"'

14. "rar# Re$"cati"' +"6%$ete &cB'"$e#ge

1a. M"#i; Cearer Res%"'se

.

<a. +reate :'#irect ata "rar#i'g Tu''e$ Res%"'se

(A)

11. 8'$; "r :'#irect "rar#i'g " #ata

1<. TracBi'g &rea U%#ate %r"ce#ure

1c. e$ete Sessi"' ReDuest

(>) 1a. UE +"'te/t Re$ease +"66a'#

U%$i'B User P$a'e #ata

<. +reate :'#irect ata "rar#i'g Tu''e$ ReDuest

a. +reate :'#irect ata "rar#i'g Tu''e$ Res%"'se

. +reate :'#irect ata "rar#i'g Tu''e$ ReDuest

4a. +reate Sessi"' Res%"'se


1. UE +"'te/t Re$ease +"6%$ete

1#. e$ete Sessi"' Res%"'se

20a. e$ete :'#irect ata "rar#i'g Tu''e$ ReDuest

20. e$ete :'#irect ata "rar#i'g Tu''e$ Res%"'se

21a. e$ete :'#irect ata "rar#i'g Tu''e$ ReDuest

21. e$ete :'#irect ata "rar#i'g Tu''e$ Res%"'se

10. e*C Status Tra'ser

10c. MME Status Tra'ser

10a. "rar# &ccess +"'te/t *"tiicati"'

10. "rar# &ccess +"'te/t &cB'"$e#ge

0i1ure +'+'%'&'&$%2 S%$4ased handover

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'OT2 ,H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "teps ,: and ,:aconcern GTP based "9A">.

'OT2 *H &f the "ervin G? is not relocated- the bo L"ource "ervin G?L in fiure 9.9.,.*.*=, is actin as thetaret "ervin G?.

,. The source e'ode0 decides to initiate an ",=based handover to the taret e'ode0. This can be triered e.. by

no F* connectivity to the taret e'ode0- or by an error indication from the taret e'ode0 after an unsuccessfulF*=based handover- or by dynamic information learnt by the source e'ode0.

*. The source e'ode0 sends @andover /eDuired (8irect 7orwardin Path vailability- "ource to Taret

transparent container- taret e'ode0 &dentity- 1"G &8- 1"G access mode- taret T&- ",P 1ause- /'assistance data) to the source MM2. The source e'ode0 indicates which bearers are subject to data forwardin.

8irect 7orwardin Path vailability indicates whether direct forwardin is available from the source e'ode0 tothe taret e'ode0. This indication from source e'ode0 can be based on e.. the presence of F*. The taret T&

is sent to MM2 to facilitate the selection of a suitable taret MM2. ?hen the taret cell is a 1"G cell or a hybridcell- the source e'ode0 shall include the 1"G &8 of the taret cell. &f the taret cell is a hybrid cell- the 1"G

access mode shall be indicated.

3. The source MM2 selects the taret MM2 as described in clause ;.3.>.3 on LMM2 "election 7unctionL and if it

has determined to relocate the MM2- it sends a 7orward /elocation /eDuest (MM2 2 contet- "ource toTaret transparent container- /' 1ause- taret e'ode0 &dentity- 1"G &8- 1"G Membership &ndication- taretT&- M" &nfo 1hane /eportin ction (if available)- 1"G &nformation /eportin ction (if available)- 2

Time None- 8irect 7orwardin 7la- "ervin 'etwor#- 5ocal @ome 'etwor# &8- /' assistance data) messae

to the taret MM2. The taret T& is sent to the taret MM2 to help it to determine whether "=G? relocation isneeded (and- if needed- aid "G? selection). The old "ervin 'etwor# is sent to taret MM2 to support the taret

MM2 to resolve if "ervin 'etwor# is chaned. &n networ# sharin scenarios "ervin 'etwor# denotes theservin core networ#.

The source MM2 shall perform access control by chec#in the 2$s 1"G subscription when 1"G &8 is provided by the source e'ode0. &f there is no subscription data for this 1"G &8 or the 1"G subscription is epired- and

the taret cell is a 1"G cell- the source MM2 shall reject the handover with an appropriate cause unless the 2has emerency bearer services.

The MM2 2 contet includes &M"&- M2 &dentity- 2 security contet- 2 'etwor# 1apability- M0/-

"elected 1' operator &8- P' restriction- "ervin G? address and T2&8 for control sinallin- and 2P" 0earercontet(s).

n 2P" 0earer contet includes the P8' G? addresses and T2&8s (for GTP=based "9A">) or G/2 #eys (for

PM&P=based "9A">) at the P8' G?(s) for uplin# traffic- P'- "ervin G? addresses and T2&8s for uplin#traffic- and T&.

&f "&PTO at the 5ocal 'etwor# is active for a P8' connection in the architecture with stand=alone G? thesource MM2 shall include the 5ocal @ome 'etwor# &8 of the source cell in the 2P" 0earer contet

correspondin to the "&PTO at the 5ocal 'etwor# P8' connection.

/' 1ause indicates the ",P 1ause as received from source e'ode0.

The source MM2 includes the 1"G &8 in the 7orward /elocation /eDuest when the taret cell is a 1"G orhybrid cell. ?hen the taret cell is a hybrid cell- or if there are one or several emerency bearers and the taret

cell is a 1"G cell- the 1"G Membership &ndication indicatin whether the 2 is a 1"G member shall beincluded in the 7orward /elocation /eDuest messae.

The 8irect 7orwardin 7la indicates if direct forwardin is applied- or if indirect forwardin is oin to be setup by the source side.

The taret MM2 shall determine the Maimum P' restriction based on the P' /estriction of each bearer

contet in the 7orward /elocation /eDuest- and shall subseDuently store the new Maimum P' restriction

value.

&f the 2 receives only emerency services and the 2 is &11less- &M"& can not be included in the MM2 2

contet in 7orward /elocation /eDuest messae. 7or emerency attached 2s- if the &M"& cannot beauthenticated- then the &M"& shall be mar#ed as unauthenticated. lso- in this case- security parameters are

included only if available.

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;. &f the MM2 has been relocated- the taret MM2 verifies whether the source "ervin G? can continue to servethe 2. &f not- it selects a new "ervin G? as described in clause ;.3.>.* on L"ervin G? "election 7unctionL.

&f the MM2 has not been relocated- the source MM2 decides on this "ervin G? re=selection.

&f the source "ervin G? continues to serve the 2- no messae is sent in this step. &n this case- the taret

"ervin G? is identical to the source "ervin G?.

&f a new "ervin G? is selected- the taret MM2 sends a 1reate "ession /eDuest (bearer contet(s) with P8'G? addresses and T2&8s (for GTP=based "9A">) or G/2 #eys (for PM&P=based "9A">) at the P8' G?(s) for

uplin# traffic- "ervin 'etwor#- 2 Time None) messae per P8' connection to the taret "ervin G?. The

taret "ervin G? allocates the "=G? addresses and T2&8s for the uplin# traffic on ", reference point (oneT2&8 per bearer). The taret "ervin G? sends a 1reate "ession /esponse ("ervin G? addresses and uplin#

T2&8(s) for user plane) messae bac# to the taret MM2.

9. The Taret MM2 sends @andover /eDuest (2P" 0earers to "etup- M0/- ",P 1ause- "ource to Taret

transparent container- 1"G &8- 1"G Membership &ndication- @andover /estriction 5ist- /' assistance data)messae to the taret e'ode0. This messae creates the 2 contet in the taret e'ode0- includin information

about the bearers- and the security contet. 7or each 2P" 0earer- the 0earers to "etup includes "ervin G?address and uplin# T2&8 for user plane- and 2P" 0earer Eo". &f the direct forwardin fla indicates

unavailability of direct forwardin and the taret MM2 #nows that there is no indirect data forwardin

connectivity between source and taret- the 0earers to "etup shall include L8ata forwardin not possibleLindication for each 2P" bearer. @andover /estriction 5ist is sent if available in the Taret MM2I it is describedin clause ;.3.9.< LMobility /estrictionsL.

",P 1ause indicates the /' 1ause as received from source MM2.

The Taret MM2 shall include the 1"G &8 and 1"G Membership &ndication when provided by the source MM2

in the 7orward /elocation /eDuest messae.

The taret e'ode0 sends a @andover /eDuest c#nowlede (2P" 0earer "etup list- 2P" 0earers failed to setup

list Taret to "ource transparent container) messae to the taret MM2. The 2P" 0earer "etup list includes a listof addresses and T2&8s allocated at the taret e'ode0 for downlin# traffic on ",= reference point (one T2&8

per bearer) and addresses and T2&8s for receivin forwarded data if necessary. &f the 2=M0/ is chaned- e..

all the 2P" bearers which are associated to the same P' are rejected in the taret e'ode0- the MM2 shallrecalculate the new 2=M0/ and sinal the modified 2=M0/ value to the taret e'ode0.

&f none of the default 2P" bearers have been accepted by the taret e'ode0- the taret MM2 shall reject the

handover as specified in clause 9.9.,.*.3.

&f the taret cell is a 1"G cell- the taret e'ode0 shall verify the 1"G &8 provided by the taret MM2- and

reject the handover with an appropriate cause if it does not match the 1"G &8 for the taret cell. &f the tarete'ode0 is in hybrid mode- it may use the 1"G Membership &ndication to perform differentiated treatment for

1"G and non=1"G members. &f the taret cell is a 1"G cell- and if the 1"G Membership &ndication is LnonmemberL- the taret e'ode0 only accepts the emerency bearers.

The /' assistance data parameter is further described in T" 3:.;,3 J3:K.

:. &f indirect forwardin applies and the "ervin G? is relocated- the taret MM2 sets up forwardin parameters by sendin 1reate &ndirect 8ata 7orwardin Tunnel /eDuest (taret e'ode0 addresses and T2&8s forforwardin) to the "ervin G?. The "ervin G? sends a 1reate &ndirect 8ata 7orwardin Tunnel /esponse

(taret "ervin G? addresses and T2&8s for forwardin) to the taret MM2. &f the "ervin G? is not relocated-indirect forwardin may be set up in step > below.

&ndirect forwardin may be performed via a "ervin G? which is different from the "ervin G? used as theanchor point for the 2.

<. &f the MM2 has been relocated- the taret MM2 sends a 7orward /elocation /esponse (1ause- Taret to "ource

transparent container- "ervin G? chane indication- 2P" 0earer "etup 5ist- ddresses and T2&8s) messae to

the source MM2. 7or indirect forwardin- this messae includes "ervin G? ddress and T2&8s for indirectforwardin (source or taret). "ervin G? chane indication indicates a new "ervin G? has been selected.

>. &f indirect forwardin applies- the source MM2 sends 1reate &ndirect 8ata 7orwardin Tunnel /eDuest(addresses and T2&8s for forwardin) to the "ervin G?. &f the "ervin G? is relocated it includes the tunnel

identifier to the taret servin G?.

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The "ervin G? responds with a 1reate &ndirect 8ata 7orwardin Tunnel /esponse ("ervin G? addresses andT2&8s for forwardin) messae to the source MM2.


C. The source MM2 sends a @andover 1ommand (Taret to "ource transparent container- 0earers subject to

forwardin- 0earers to /elease) messae to the source e'ode0. The 0earers subject to forwardin includes listof addresses and T2&8s allocated for forwardin. The 0earers to /elease includes the list of bearers to be

released.

Ca. The @andover 1ommand is constructed usin the Taret to "ource transparent container and is sent to the 2.pon reception of this messae the 2 will remove any 2P" bearers for which it did not receive the

correspondin 2P" radio bearers in the taret cell.

,+. The source e'ode0 sends the e'ode0 "tatus Transfer messae to the taret e'ode0 via the MM2(s) to convey

the P81P and @7' status of the 2=/0s for which P81P status preservation applies- as specified inT" 3:.3++ J9K. The source e'ode0 may omit sendin this messae if none of the 2=/0s of the 2 shall be

treated with P81P status preservation.

&f there is an MM2 relocation the source MM2 sends this information to the taret MM2 via the 7orward ccess1ontet 'otification messae which the taret MM2 ac#nowledes. The source MM2 or- if the MM2 isrelocated- the taret MM2- sends the information to the taret e'ode0 via the MM2 "tatus Transfer messae.

,,. The source e'ode0 should start forwardin of downlin# data from the source e'ode0 towards the tarete'ode0 for bearers subject to data forwardin. This may be either direct (step ,,a) or indirect forwardin (step

,,b).

,*. fter the 2 has successfully synchroni!ed to the taret cell- it sends a @andover 1onfirm messae to the taret

e'ode0. 8ownlin# pac#ets forwarded from the source e'ode0 can be sent to the 2. lso- uplin# pac#ets can be sent from the 2- which are forwarded to the taret "ervin G? and on to the P8' G?.

,3. The taret e'ode0 sends a @andover 'otify (T&S21G&- 5ocal @ome 'etwor# &8) messae to the taretMM2.

7or "&PTO at the 5ocal 'etwor# with stand=alone G? architecture- the taret e'ode0 shall include the 5ocal@ome 'etwor# &8 of the taret cell in the @andover 'otify messae.

,;. &f the MM2 has been relocated- the taret MM2 sends a 7orward /elocation 1omplete 'otification () messaeto the source MM2. The source MM2 in response sends a 7orward /elocation 1omplete c#nowlede ()

messae to the taret MM2. /eardless if MM2 has been relocated or not- a timer in source MM2 is started to

supervise when resources in "ource e'ode0 and if the "ervin G? is relocated- also resources in "ource"ervin G? shall be released.

pon receipt of the 7orward /elocation 1omplete c#nowlede messae the taret MM2 starts a timer if the

taret MM2 allocated "=G? resources for indirect forwardin.

,9. The MM2 sends a Modify 0earer /eDuest (e'ode0 address and T2&8 allocated at the taret e'ode0 fordownlin# traffic on ",= for the accepted 2P" bearers- &"/ ctivated) messae to the taret "ervin G? foreach P8' connection- includin the P8' connections that need to be released. &f the P8' G? reDuested 2$s

location andAor ser 1"G information (determined from the 2 contet)- the MM2 also includes the ser5ocation &nformation &2 andAor ser 1"G &nformation &2 in this messae. &f the 2 Time None has chaned- the

MM2 includes the 2 Time None &2 in this messae. &f "ervin G? is not relocated but the "ervin 'etwor#has chaned or if the MM2 has not received any old "ervin 'etwor# information from the old MM2- the MM2

includes the "ervin 'etwor# &2 in this messae. 7or the case that neither MM2 nor "=G? chaned- if &"/ was

activated before this procedure MM2 should maintain &"/. The 2 is informed about the &"/ status in theTrac#in rea pdate procedure. &f the "ervin G? supports Modify ccess 0earers /eDuest procedure and if

there is no need for the "G? to send the sinallin to the PG?- the MM2 may send Modify ccess 0earers

/eDuest (e'ode0 address and T2&8 allocated at the taret e'ode0 for downlin# traffic on ", for the accepted2P" bearers- &"/ ctivated) per 2 to the "ervin G? to optimi!e the sinallin.

The MM2 releases the non=accepted dedicated bearers by trierin the bearer release procedure as specified inclause 9.;.;.*. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85

pac#et and does not send a 8ownlin# 8ata 'otification to the MM2.

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&f the default bearer of a P8' connection has not been accepted by the taret e'ode0 and there are other P8'connections active- the MM2 shall handle it in the same way as if all bearers of a P8' connection have not been

accepted. The MM2 releases these P8' connections by trierin the MM2 reDuested P8' disconnection procedure specified in clause 9.,+.3.

?hen the Modify 0earer /eDuest does not indicate &"/ ctivated the "ervin G? deletes any &"/ resources by

sendin a 8elete 0earer /eDuest to the other 1' node that has bearer resources on the "ervin G? reserved.

,:. &f the "ervin G? is relocated- the taret "ervin G? assins addresses and T2&8s (one per bearer) for

downlin# traffic from the P8' G?. &t sends a Modify 0earer /eDuest ("ervin G? addresses for user plane and

T2&8(s)- "ervin 'etwor#- P8' 1harin Pause "upport &ndication) messae per P8' connection to the P8'G?(s). The "=G? also includes ser 5ocation &nformation &2 andAor 2 Time None &2 andAor ser 1"G

&nformation &2 if they are present in step ,9. The "ervin G? also includes "ervin 'etwor# &2 if it is presentin step ; or step ,9. The "ervin G? allocates 85 T2&8s on "9A"> even for non=accepted bearers. The P8'

G? updates its contet field and returns a Modify 0earer /esponse (1harin &d- M"&"8'- P8' 1harinPause 2nabled &ndication (if P8' G? has chosen to enable the function)- etc.) messae to the taret "ervin

G?. The M"&"8' is included if the P8' G? has it stored in its 2 contet. The P8' G? starts sendindownlin# pac#ets to the taret G? usin the newly received address and T2&8s. These downlin# pac#ets will

use the new downlin# path via the taret "ervin G? to the taret e'ode0.

&f the "ervin G? is not relocated- but has received the ser 5ocation &nformation &2 andAor 2 Time None &2andAor ser 1"G &nformation &2 andAor "ervin 'etwor# &2 from the MM2 in step ,9- the "ervin G? shallinform the P8' G?(s) about these information that e.. can be used for charin- by sendin the messae

Modify 0earer /eDuest (ser 5ocation &nformation &2- 2 Time None &2- ser 1"G &nformation &2- "ervin

'etwor# &2) to the P8' G?(s) concerned. Modify 0earer /esponse messae is sent bac# to the "ervin G?.

&f the "ervin G? is not relocated and it has not received ser 5ocation &nformation &2 nor 2 Time None &2nor ser 1"G &nformation &2 nor "ervin 'etwor# &2 from the MM2 in step ,9- no messae is sent in this step

and downlin# pac#ets from the "ervin=G? are immediately sent on to the taret e'ode0.


immediately after switchin the path in order to assist the reorderin function in the taret e'ode0. The source"ervin G? shall forward the Lend mar#erL pac#ets to the source e'ode0.

,<. The "ervin G? shall return a Modify 0earer /esponse ("ervin G? address and T2&8 for uplin# traffic)

messae to the MM2 as a response to a Modify 0earer /eDuest messae- or a Modify ccess 0earers /esponse("ervin G? address and T2&8 for uplin# traffic) as a response to a Modify ccess 0earers /eDuest messae. &f

the "ervin G? cannot serve the MM2 /eDuest in the Modify ccess 0earers /eDuest messae without "9A">

sinallin other than to unpause charin in the P8' G? or without correspondin Gc sinallin when PM&Pis used over the "9A"> interface- it shall respond to the MM2 with indicatin that the modifications are not

limited to ",= bearers- and the MM2 shall repeat its reDuest usin Modify 0earer /eDuest messae per P8'connection.

&f the "ervin G? does not chane- the "ervin G? shall send one or more Lend mar#erL pac#ets on the old path immediately after switchin the path in order to assist the reorderin function in the taret e'ode0.

,>. The 2 initiates a Trac#in rea pdate procedure when one of the conditions listed in clause LTriers fortrac#in area updateL applies.

The taret MM2 #nows that it is a @andover procedure that has been performed for this 2 as it received the bearer contet(s) by handover messaes and therefore the taret MM2 performs only a subset of the T update

procedure- specifically it ecludes the contet transfer procedures between source MM2 and taret MM2.

,C. ?hen the timer started in step ,; epires the source MM2 sends a 2 1ontet /elease 1ommand () messae to

the source e'ode0. The source e'ode0 releases its resources related to the 2 and responds with a 2 1ontet/elease 1omplete () messae. ?hen the timer started in step ,; epires and if the source MM2 received the

"ervin G? chane indication in the 7orward /elocation /esponse messae- it deletes the 2P" bearer resources by sendin 8elete "ession /eDuest (1ause- 50&- Operation &ndication) messaes to the "ource "ervin G?. The

operation &ndication fla is not set- that indicates to the "ource "ervin G? that the "ource "ervin G? shallnot initiate a delete procedure towards the P8' G?. The "ource "ervin G? ac#nowledes with 8elete

"ession /esponse () messaes. &f &"/ has been activated before this procedure- the cause indicates to the "ource"=G? that the "ource "=G? shall delete the bearer resources on the other old 1' node by sendin 8elete

0earer /eDuest messae(s) to that 1' node.

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*+. &f indirect forwardin was used then the epiry of the timer at source MM2 started at step ,; triers the sourceMM2 to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to the "=G? to release the temporary

resources used for indirect forwardin that were allocated at step >.

*,. &f indirect forwardin was used and the "ervin G? is relocated- then the epiry of the timer at taret MM2

started at step ,; triers the taret MM2 to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to

the taret "=G? to release temporary resources used for indirect forwardin that were allocated at step :.

!.!.1.2.3 S1-ase# ha'#"5er, ReIect

The Taret e'ode0 rejects the use of the @andover procedure if none of the reDuested bearers in the @andover /eDuest

messae could be established. &n this case no 2 contet is established in the taret MM2Ae'ode0 and no resources areallocated. 7urther- the Taret MM2 rejects the handover reDuest and clears all resource in Taret e'ode0 and Taret

MM2 if the Taret e'ode0 accepts the handover reDuest but none of the default 2P" bearers ets resources allocated.&n both cases- the 2 remains in the "ource e'ode0AMM2.

UES"urcee*"#eC

S"urceMME

S"urceSer5i'g GA P* GA

TargetMME

Target Ser5i'gGA

Targete*"#eC 7SS



1. ecisi"' t" trigger are$"cati"' 5ia S1


!. 7a'#"5er ReDuest

a. 7a'#"5er ai$ure

<. "rar# Re$"cati"' Res%"'se (ReIect)

. 7a'#"5er Pre%arati"' ai$ure

. a. e$ete Sessi"' Res%"'se




. 7a'#"5er ReDuest &cB'"$e#ge

0i1ure +'+'%'&'3$%2 S%$4ased handover5 Reject

'OT2 ,H "teps 3- ;- < and > are performed if the MM2 is relocated.

'OT2 *H &f the MM2 is not relocated "teps 9 and : are performed by the source MM2 and- in the description

below- the source MM2 acts as the taret MM2.

,=9. "teps , to 9 in the flow are identical to steps ,=9 in clause 9.9.,.*.*.

:a. &f the Taret e'ode0 fails to allocate any resources for any of the reDuested 2P" bearers it sends a @andover

7ailure (1ause) messae to the Taret MM2. The Taret MM2 clears any reserved resources for this 2 in thetaret MM2.

:b. &f the Taret MM2 receives a @andover /eDuest c#nowlede messae from the Taret e'ode0 but none of the

default 2P" bearers are in the 2P" 0earer "etup list &2- the Taret MM2 clears any reserved resources for this2 in both the Taret MM2 and the Taret e'ode0.

<. This step is only performed for "ervin G? relocation- i.e. if steps ;A;a have been performed. The Taret MM2deletes the 2P" bearer resources by sendin 8elete "ession /eDuest (1ause) messaes to the Taret "ervin

G?. The Taret "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messaes.

>. The Taret MM2 sends the 7orward /elocation /esponse (1ause) messae to the "ource MM2.

C. ?hen the "ource MM2 receives the 7orward /elocation /esponse messae- it sends a @andover Preparation7ailure (1ause) messae to the "ource e'ode0.

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!.!.1.2.4 S1-ase# ha'#"5er, +a'ce$

&nstead of completin the handover procedure- the source e'ode0 may at any time durin the handover procedure- up

to the time when a handover command messae is sent to the 2 cancel the handover.

The MM2 shall cancel the handover resources as defined in clause 9.9.*.9., for case the source /' is e'ode0.

!.!.2 :'ter R&T ha'#"5er

!.!.2.0 Ge'era$

8urin &nter /T handover indirect forwardin may apply for the dowlin# data forwardin performed as part of thehandover. 7rom its confiuration data the MM2 #nows whether indirect forwardin applies and it allocates a dowlin#

data forwardin path on a "ervin G?s for indirect forwardin. 7rom its confiuration data the "; "G"' #nowswhether indirect forwardin applies and it allocates dowlin# data forwardin paths on "ervin G?s for indirect

forwardin. &t is confiured on MM2 and "; "G"' whether indirect dowlin# data forwardin does not apply- appliesalways or applies only for inter P5M' inter /T handovers.

7or inter=P5M' handover to a 1"G cell- if the source MM2A";="G"' has the 1"G=&8 list of the taret P5M'- the

source MM2A";="G"' shall use it to validate the 1"G membership of the 2 in the taret 1"G cell. Otherwise- based

on operator$s confiuration the source MM2A";="G"' may allow the handover by validatin the 1"G membership ofthe 2 in the taret 1"G cell usin the 1"G=&8 list of the reistered P5M'=&8. &f neither the 1"G=&8 list of the taret

P5M' nor the operator$s confiuration permits the handover- the source MM2A";="G"' shall reject the handover dueto no 1"G membership information of the taret P5M'=&8

'OT2 ,H &nter=P5M' handover to a 1"G cell in a P5M' which is not an eDuivalent P5M' for the 2 is notsupported.

'OT2 *H &nter=P5M' handover to a 1"G cell of an eDuivalent P5M' is only supported if the 1"G=&8 of the cell isin the 1"G=&8 list of both eDuivalent P5M's.

'OT2 3H pon bearer loss or 2=detected bearer Eo" deradation durin inter=/T 3GPP handover- after

receivin the @andover 1ommand the 2 can adopt an implementation dependent mechanism to trierthe handover of one or more P8' connections or mobility of one or more &P flows to ?5' (e.. ta#ininto account policies obtained from '8"7).

'OT2 ;H pon deletion of the default bearer(s) durin inter=/T handover- the P8' G? can delay thedisconnection of the P8' connection(s) in the core networ# based on an implementation dependent

mechanism- in order to enable the 2 to handover such P8' connection(s) to a ?5' access networ#with mechanisms specified in T" *3.;+* J*K. ntil the P8' connection(s) are established via ?5'

access networ#- P8' G? will bloc# downlin# data for affected P8'(s).

!.!.2.1 E-UTR&* t" UTR&* :u 6"#e :'ter R&T ha'#"5er

!.!.2.1.1 Ge'era$Pre=conditionsH

= The 2 is in 21M=1O''21T28 state (2=T/' mode).

&f emerency bearer services are onoin for an 2- handover to the taret /'1 is performed independent of the

@andover /estriction 5ist. The "G"' chec#s- as part of the /outin rea pdate in the eecution phase- if thehandover is to a restricted area and if so "G"' deactivate the non=emerency P8P contet as specified in

T" *3.+:+ J<K- clause C.*.;.*.

&f emerency bearer services are onoin for the 2- the source MM2 evaluates the handover to the taret 1"G cellindependent of the 2$s 1"G subscription. &f the handover is to a 1"G cell that the 2 is not subscribed- the taret

/'1 will only accept the emerency bearers and the taret "G"' deactivates the non=emerency P8P contets that

were not accepted by the taret /'1 as specified in T" *3.+:+ J<K- clause C.*.;.*.

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!.!.2.1.2 Pre%arati"' %hase

UE S"urcee*"#eC Target R*+ S"urce MME Target SGS* Ser5i'g GA 7SS

1. 7a'#"5er :'itiati"'

2. 7a'#"5er ReDuire# 3. "rar# Re$"cati"' ReDuest

!. Re$"cati"' ReDuest

!a. Re$"cati"' ReDuest &cB'"$e#ge

< . +reate :'#irect ata "rar#i'g Tu''e$ ReDuest


P* GA

< a. +reate :'#irect ata "rar#i'g Tu''e$ Res%"'se

U%$i'B a'# "'$i'BUser P$a'e PUs

Target Ser5i'g GA





S"urce

0i1ure +'+'&'%'&$%2 $!TRA" to !TRA" 7u mode 7nter RAT 5 preparation phase

,. The source e'ode0 decides to initiate an &nter=/T handover to the taret access networ#- T/' &u mode. tthis point both uplin# and downlin# user data is transmitted via the followinH 0earer(s) between 2 and source

e'ode0- GTP tunnel(s) between source e'ode0- "ervin G? and P8' G?.

&f the 2 has an onoin emerency bearer service the source e'ode0 shall not initiate P" handover to a

T/' cell that is not &M" voice capable.

'OT2 ,H The process leadin to the handover decision is outside of the scope of this specification.

*. The source e'ode0 sends a @andover /eDuired (",P 1ause- Taret /'1 &dentifier- 1"G &8- 1"G accessmode- "ource to Taret Transparent 1ontainer) messae to the source MM2 to reDuest the 1' to establish

resources in the taret /'1- taret "G"' and the "ervin G?. The bearers that will be subject to dataforwardin (if any) are identified by the taret "G"' in a later step (see step < below). ?hen the taret cell is a

1"G cell or a hybrid cell- the source e'ode0 shall include the 1"G &8 of the taret cell. &f the taret cell is ahybrid cell- the 1"G access mode shall be indicated.

3. The source MM2 determines from the $Taret /'1 &dentifier$ &2 that the type of handover is &/T @andover to

T/' &u mode. The "ource MM2 initiates the @andover resource allocation procedure by sendin a 7orward/elocation /eDuest (&M"&- Taret &dentification- 1"G &8- 1"G Membership &ndication- MM 1ontet- P8'

1onnections- MM2 Tunnel 2ndpoint &dentifier for 1ontrol Plane- MM2 ddress for 1ontrol plane- "ource toTaret Transparent 1ontainer- /' 1ause- M" &nfo 1hane /eportin ction (if available)- 1"G &nformation/eportin ction (if available)- 2 Time None- &"/ "upported- "ervin 'etwor#) messae to the taret "G"'.

The information &"/ "upported is indicated if the source MM2 and associated "ervin G? are capable toactivate &"/ for the 2. ?hen &"/ is activated the messae should be sent to the "G"' that maintains &"/ for

the 2 when this "G"' is servin the taret identified by the Taret &dentification. This messae includes allP8' 1onnections active in the source system and for each P8' 1onnection includes the associated P'- the

address and the uplin# Tunnel endpoint parameters of the "ervin G? for control plane- and a list of 2P" 0earer1ontets. /' 1ause indicates the ",P 1ause as received from source e'ode0. The old "ervin 'etwor# is

sent to taret MM2 to support the taret MM2 to resolve if "ervin 'etwor# is chaned.

The source MM2 shall perform access control by chec#in the 2$s 1"G subscription when 1"G &8 is provided

by the source e'ode0. &f there is no subscription data for this 1"G &8 or the 1"G subscription is epired- and

the taret cell is a 1"G cell- the source MM2 shall reject the handover with an appropriate cause unless the 2has emerency bearer services.

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The source MM2 includes the 1"G &8 in the 7orward /elocation /eDuest when the taret cell is a 1"G cell orhybrid cell. ?hen the taret cell is a hybrid cell- or if there are one or several emerency bearers and the taret


The taret "G"' maps the 2P" bearers to P8P contets ,=to=, and maps the 2P" 0earer Eo" parameter values

of an 2P" bearer to the /elease CC Eo" parameter values of a bearer contet as defined in nne 2

Prioriti!ation of P8P 1ontets is performed by the taret core networ# node- i.e. taret "G"'.

The MM contet contains security related information- e.. supported cipherin alorithms as described in

T" *C.*<; J;3K. @andlin of security #eys is described in T" 33.;+, J;,K.

The taret "G"' shall determine the Maimum P' restriction based on the P' /estriction of each bearer

contet in the 7orward /elocation /eDuest- and shall subseDuently store the new Maimum P' restrictionvalue.

&f "&PTO at the 5ocal 'etwor# is active for a P8' connection in the architecture with stand=alone G? the

source MM2 shall include the 5ocal @ome 'etwor# &8 of the source cell in the P8' 1onnectionscorrespondin to the "&PTO at the 5ocal 'etwor# P8' connection.

;. The taret "G"' determines if the "ervin G? is to be relocated- e..- due to P5M' chane. &f the "ervin G?

is to be relocated- the taret "G"' selects the taret "ervin G? as described under clause ;.3.>.* on L"ervinG? selection functionL- and sends a 1reate "ession /eDuest messae (&M"&- "G"' Tunnel 2ndpoint &dentifier

for 1ontrol Plane- "G"' ddress for 1ontrol plane- P8' G? address(es) for user plane- P8' G? 5 T2&8(s)for user plane- P8' G? address(es) for control plane- and P8' G? T2&8(s) for control plane- the Protocol

Type over "9A">- "ervin 'etwor#) per P8' connection to the taret "ervin G?. The Protocol Type over"9A"> is provided to "ervin G? which protocol should be used over "9A"> interface.

The taret "G"' establishes the 2P" 0earer contet(s) in the indicated order. The "G"' deactivates- as provided in step < of the eecution phase- the 2P" 0earer contets which cannot be established.

;a. The taret "ervin G? allocates its local resources and returns a 1reate "ession /esponse ("ervin G?address(es) for user plane- "ervin G? 5 T2&8(s) for user plane- "ervin G? ddress for control plane-

"ervin G? T2&8 for control plane) messae to the taret "G"'.

9. The taret "G"' reDuests the taret /'1 to establish the radio networ# resources (/0s) by sendin the

messae /elocation /eDuest (2 &dentifier- 1ause- 1' 8omain &ndicator- &nterity protection information (i.e.&% and allowed &nterity Protection alorithms)- 2ncryption information (i.e. 1% and allowed 1ipherin

alorithms)- /0 to be setup list- 1"G &8- 1"G Membership &ndication- "ource /'1 to Taret /'1Transparent 1ontainer- "ervice @andover related information). &f the ccess /estriction is present in the MM

contet- the "ervice @andover related information shall be included by the taret "G"' for the /elocation/eDuest messae in order for /'1 to restrict the 2 in connected mode to handover to the /T prohibited by

the ccess /estriction.

7or each /0 reDuested to be established- /0s To 0e "etup shall contain information such as /0 &8- /0

parameters- Transport 5ayer ddress- and &u Transport ssociation. The /0 &8 information element contains

the '"P& value- and the /0 parameters information element ives the Eo" profile. The Transport 5ayerddress is the "ervin G? ddress for user plane (if 8irect Tunnel is used) or the "G"' ddress for user plane(if 8irect Tunnel is not used)- and the &u Transport ssociation corresponds to the uplin# Tunnel 2ndpoint

&dentifier 8ata in "ervin G? or "G"' respectively.

1ipherin and interity protection #eys are sent to the taret /'1 to allow data transfer to continue in the new

/TAmode taret cell without reDuirin a new % (uthentication and %ey reement) procedure.&nformation that is reDuired to be sent to the 2 (either in the /elocation 1ommand messae or after the

handover completion messae) from //1 in the taret /'1 shall be included in the //1 messae sent from thetaret /'1 to the 2 via the transparent container. More details are described in T" 33.;+, J;,K.

The Taret "G"' shall include the 1"G &8 and 1"G Membership &ndication when provided by the sourceMM2 in the 7orward /elocation /eDuest messae.

&n the taret /'1 radio and &u user plane resources are reserved for the accepted /0s. 1ause indicates the/' 1ause as received from source MM2. The "ource /'1 to Taret /'1 Transparent 1ontainer includes the

value from the "ource to Taret Transparent 1ontainer received from the source e'ode0.

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&f the taret cell is a 1"G cell- the taret /'1 shall verify the 1"G &8 provided by the taret "G"'- and rejectthe handover with an appropriate cause if it does not match the 1"G &8 for the taret cell. &f the taret cell is in

hybrid mode- the taret /'1 may use the 1"G Membership &ndication to perform differentiated treatment for1"G and non=1"G members. &f the taret cell is a 1"G cell- and if the 1"G Membership &ndication is Lnon

memberL- the taret /'1 only accepts the emerency bearers.

9a. The taret /'1 allocates the resources and returns the applicable parameters to the taret "G"' in the messae/elocation /eDuest c#nowlede (Taret /'1 to "ource /'1 Transparent 1ontainer- /0s setup list- /0sfailed to setup list).

pon sendin the /elocation /eDuest c#nowlede messae the taret /'1 shall be prepared to receivedownlin# GTP P8s from the "ervin G?- or Taret "G"' if 8irect Tunnel is not usedfor the accepted

/0s.

2ach /0s setup list is defined by a Transport 5ayer ddress- which is the taret /'1 ddress for user data-

and the &u Transport ssociation- which corresponds to the downlin# Tunnel 2ndpoint &dentifier for user data.

ny 2P" 0earer contets for which a /0 was not established are maintained in the taret "G"' and the 2.

These 2P" 0earer contets shall be deactivated by the taret "G"' via eplicit "M procedures upon thecompletion of the routin area update (/) procedure.

:. &f $&ndirect 7orwardin$ and relocation of "ervin G? apply and 8irect Tunnel is used the taret "G"' sends a1reate &ndirect 8ata 7orwardin Tunnel /eDuest messae (Taret /'1 ddress and T2&8(s) for 85 data

forwardin) to the "ervin G?. &f $&ndirect 7orwardin$ and relocation of "ervin G? apply and 8irect Tunnelis not used- then the taret "G"' sends a 1reate &ndirect 8ata 7orwardin Tunnel /eDuest messae ("G"'

ddress and T2&8(s) for 85 data forwardin) to the "ervin G?.

&ndirect forwardin may be performed via a "ervin G? which is different from the "ervin G? used as the

anchor point for the 2.

:a. The "ervin G? returns a 1reate &ndirect 8ata 7orwardin Tunnel /esponse (1ause- "ervin G? ddress(es)

and "ervin G? 85 T2&8(s) for data forwardin) messae to the taret "G"'.

<. The taret "G"' sends the messae 7orward /elocation /esponse (1ause- "G"' Tunnel 2ndpoint &dentifier for

1ontrol Plane- "G"' ddress for 1ontrol Plane- Taret to "ource Transparent 1ontainer- 1ause- /0 "etup&nformation- dditional /0 "etup &nformation- ddress(es) and T2&8(s) for ser Traffic 8ata 7orwardin-

"ervin G? chane indication) to the source MM2. "ervin G? chane indication indicates a new "ervin G?has been selected. The Taret to "ource Transparent 1ontainer contains the value from the Taret /'1 to

"ource /'1 Transparent 1ontainer received from the taret /'1.

The &2 $ddress(es) and T2&8(s) for ser Traffic 8ata 7orwardin$ defines the destination tunnellin endpoint

for data forwardin in taret system- and it is set as followsH

= &f $8irect 7orwardin$ applies- or if $&ndirect 7orwardin$ and no relocation of "ervin G? apply and 8irect

Tunnel is used- then the &2 $ddress(es) and T2&8(s) for ser Traffic 8ata 7orwardin$ contains theaddresses and GTP= tunnel endpoint parameters to the Taret /'1 received in step 9a.

= &f $&ndirect 7orwardin$ and relocation of "ervin G? apply- then the &2 $ddress(es) and T2&8(s) for serTraffic 8ata 7orwardin$ contains the addresses and 85 GTP= tunnel endpoint parameters to the "ervin

G? received in step :. This is independent from usin 8irect Tunnel or not.

= &f $&ndirect 7orwardin$ applies and 8irect Tunnel is not used and relocation of "ervin G? does not apply-

then the &2 $ddress(es) and T2&8(s) for ser Traffic 8ata 7orwardin$ contains the 85 GTP= tunnelendpoint parameters to the Taret "G"'.

>. &f L&ndirect 7orwardinL applies- the "ource MM2 sends the messae 1reate &ndirect 8ata 7orwardin Tunnel/eDuest (ddress(es) and T2&8(s) for 8ata 7orwardin (received in step <))- 2P" 0earer &8(s)) to the "ervin

G? used for indirect forwardin.



>a. The "ervin G? returns the forwardin parameters by sendin the messae 1reate &ndirect 8ata 7orwardin

Tunnel /esponse (1ause- "ervin G? ddress(es) and T2&8(s) for 8ata 7orwardin). &f the "ervin G?

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doesn$t support data forwardin- an appropriate cause value shall be returned and the "ervin G? ddress(es)and T2&8(s) will not be included in the messae.

!.!.2.1.3 E/ecuti"' %hase

UE

S"urce

e*"#eC Target R*+ S"urce MME Target SGS* Ser5i'g GA 7SS P* GA

U%$i'B a'# "'$i'B User P$a'e PUs

1. 7a'#"5er +"66a'#

2. 78 r"6 E-UTR&* +"66a'# -

Se'#i'g "u%$i'B #ata

%"ssi$e

4. UTR&* :u &ccess Pr"ce#ures

!. Re$"cati"' +"6%$ete

. "rar# Re$"cati"' +"6%$ete *"tiicati"'

a. "rar# Re$"cati"' +"6%$ete &cB'"$e#ge


<a. M"#i; Cearer Res%"'se

. M"#i; Cearer Res%"'se

U%$i'B a'# "'$i'B User P$a'e PUs (Via Target SGS* i irect Tu''e$ is '"t use#)

4a. 7a'#"5er t" UTR&* +"6%$ete

"'$i'B User P$a'e PUs

: irect "rar#i'g a%%$ies

: :'#irect "rar#i'g a%%$ies.

Target

Ser5i'g GA

(A) <. M"#i; Cearer ReDuest

Via Target SGS* i' case irect Tu''e$ is '"t use#

10. R"utei'g &rea U%#ate %r"ce#ure


(>) 11a. e$ete Sessi"' Res%"'se

11. Re$ease Res"urces

"r Ser5i'g GA re$"cati"' Ste%s , < a'# ,a'# the "$$"i'g User P$a'e %ath, i$$ eha'#$e# ; Target Ser5i'g GA

12. e$ete :'#irect ata "rar#i'g Tu''e$ ReDuest

S"urce


13a. e$ete :'#irect ata "rar#i'g Tu''e$ Res%"'se


0i1ure +'+'&'%'3$%2 $!TRA" to !TRA" 7u mode 7nter RAT 5 eFecution phase

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "tep (0) shows P1/7interaction in the case of PM&P=based "9A">. "teps > and >a concern GTP based "9A">

The source e'ode0 continues to receive downlin# and uplin# user plane P8s.

,. The source MM2 completes the preparation phase towards source e'ode0 by sendin the messae @andover1ommand (Taret to "ource Transparent 1ontainer- 2=/0s to /elease 5ist- 0earers "ubject to 8ata7orwardin 5ist). The L0earers "ubject to 8ata forwardin listL &2 may be included in the messae and it shall

be a list of $ddress(es) and T2&8(s) for user traffic data forwardin$ received from taret side in the preparation

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phase ("tep < of the preparation phase) when $8irect 7orwardin$ applies- or the parameters received in "tep >aof the preparation phase when $&ndirect 7orwardin$ applies.

The source e'ode0 initiates data forwardin for bearers specified in the L0earers "ubject to 8ata 7orwardin5istL. The data forwardin may o directly to taret /'1 or alternatively o via the "ervin G? if so decided

by source MM2 and orA taret "G"' in the preparation phase.

*. The source e'ode0 will ive a command to the 2 to handover to the taret access networ# via the messae @Ofrom 2=T/' 1ommand. This messae includes a transparent container includin radio aspect parameters that

the taret /'1 has set=up in the preparation phase. The details of this 2=T/' specific sinallin are

described in T" 3:.3++ J9K.

pon the reception of the @O from 2=T/' 1ommand messae containin the @andover 1ommand messae-

the 2 shall associate its bearer &8s to the respective /0s based on the relation with the '"P& and shallsuspend the uplin# transmission of the user plane data.

3. Boid.

;. The 2 moves to the taret T/' &u (3G) system and eecutes the handover accordin to the parameters provided in the messae delivered in step *. The procedure is the same as in step : and > in clause 9.*.*.* in

T" ;3.,*C J>K with the additional function of association of the received /0s and eistin 0earer &d related tothe particular '"P&.

The 2 may resume the user data transfer only for those '"P&s for which there are radio resources allocated in

the taret /'1.

9. ?hen the new source /'1=&8 S "=/'T& are successfully echaned with the 2- the taret /'1 shall send the

/elocation 1omplete messae to the taret "G"'. The purpose of the /elocation 1omplete procedure is toindicate by the taret /'1 the completion of the relocation from the source 2=T/' to the /'1. fter the

reception of the /elocation 1omplete messae the taret "G"' shall be prepared to receive data from the taret/'1. 2ach uplin# '=P8 received by the taret "G"' is forwarded directly to the "ervin G?.

7or "&PTO at the 5ocal 'etwor# with stand=alone G? architecture- the taret /'1 shall include the 5ocal@ome 'etwor# &8 of the taret cell in the /elocation 1omplete messae.

:. Then the taret "G"' #nows that the 2 has arrived to the taret side and taret "G"' informs the sourceMM2 by sendin the 7orward /elocation 1omplete 'otification (&"/ ctivated- "ervin G? chane) messae.

&f indicated- &"/ ctivated indicates to the source MM2 that it shall maintain the 2$s contet and that it shallactivate &"/- which is only possible when the "=G? is not chaned. The source MM2 will also ac#nowlede

that information. timer in source MM2 is started to supervise when resources in "ource e'ode0 and "ource"ervin G? (for "ervin G? relocation) shall be released.

?hen the timer epires and &"/ ctivated is not indicated by the taret "G"' the source MM2 releases all

bearer resources of the 2. &f "ervin G? chane is indicated and this timer epires the source MM2 deletes

the 2P" bearer resources by sendin 8elete "ession /eDuest (1ause- Operation &ndication) messaes to the"ource "ervin G?. The operation &ndication fla is not set- that indicates to the "ource "ervin G? that the

"ource "ervin G? shall not initiate a delete procedure towards the P8' G?. &f &"/ has been activated before

this procedure- the cause indicates to the "ource "=G? that the "ource "=G? shall delete the bearer resources onthe other old 1' node by sendin 8elete 0earer /eDuest messae(s) to that 1' node.

pon receipt of the 7orward /elocation 1omplete c#nowlede messae the taret "G"' starts a timer if the

taret "G"' allocated "=G? resources for indirect forwardin.

<. The taret "G"' will now complete the @andover procedure by informin the "ervin G? (for "ervin G?

relocation this will be the Taret "ervin G?) that the taret "G"' is now responsible for all the 2P" 0earer

1ontets the 2 has established. This is performed in the messae Modify 0earer /eDuest ("G"' Tunnel2ndpoint &dentifier for 1ontrol Plane- '"P&(s)- "G"' ddress for 1ontrol Plane- "G"' ddress(es) and

T2&8(s) for ser Traffic for the accepted 2P" bearers (if 8irect Tunnel is not used) or /'1 ddress(es) and

T2&8(s) for ser Traffic for the accepted 2P" bearers (if 8irect Tunnel is used) and /T type- &"/ ctivated) per P8' connection. &f the P8' G? reDuested 2$s location andAor ser 1"G information (determined from

the 2 contet)- the "G"' also includes the ser 5ocation &nformation &2 andAor ser 1"G &nformation &2 inthis messae. &f the 2 Time None has chaned- the "G"' includes the 2 Time None &2 in this messae. &f

"ervin G? is not relocated but the "ervin 'etwor# has chaned or if the "G"' has not received any old"ervin 'etwor# information from the old MM2- the "G"' includes the new "ervin 'etwor# &2 in this

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messae. &n networ# sharin scenarios "ervin 'etwor# denotes the servin core networ#. &f indicated- theinformation &"/ ctivated indicates that &"/ is activated- which is only possible when the "=G? is not chaned.

?hen the Modify 0earer /eDuest does not indicate &"/ ctivated and "=G? is not chaned-- the "=G? deletesany &"/ resources by sendin a 8elete 0earer /eDuest to the other 1' node that has bearer resources on the

"=G? reserved.

The "G"' releases the non=accepted 2P" 0earer contets by trierin the 0earer 1ontet deactivation procedure. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85 pac#et and does not send a 8ownlin# 8ata 'otification to the "G"'.

'OT2 *H 8urin the 0earer 1ontet deactivation procedure if the non=accepted 2P" bearer to be deactivated isdefault bearer- the P8' G? can delay the deletion of such 2P" bearer based on an implementation

dependent mechanism to avoid possible impact on the handover of the correspondin P8' connection tothe ?5' access networ#. ntil the P8' connection(s) are established via ?5' access networ#- P8'

G? will bloc# downlin# data for affected P8'(s).

>. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) may inform the P8' G?(s)

the chane of for eample for "ervin G? relocation or the /T type that e.. can be used for charin- bysendin the messae Modify 0earer /eDuest per P8' connection. The "=G? also includes ser 5ocation

&nformation &2 andAor 2 Time None &2 andAor ser 1"G &nformation &2 if they are present in step <. "ervin

'etwor# should be included if it is received in step < or in step ; in clause 9.9.*.,.*. 7or "ervin G? relocation-the "ervin G? allocates 85 T2&8s on "9A"> even for non=accepted bearers and may include the P8'1harin Pause "upport &ndication. The P8' G? must ac#nowlede the reDuest with the messae Modify

0earer /esponse. &n the case of "ervin G? relocation- the P8' G? updates its contet field and returns a

Modify 0earer /esponse (1harin &d- M"&"8'- P8' 1harin Pause 2nabled &ndication (if P8' G? haschosen to enable the function)- etc.) messae to the "ervin G?. The M"&"8' is included if the P8' G? has it

stored in its 2 contet.

&f P11 infrastructure is used- the P8' G? informs the P1/7 about the chane of- for eample- the /T type.


immediately after switchin the path. The source "ervin G? shall forwards the Lend mar#erL pac#ets to thesource e'ode0.

C. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) ac#nowledes the user plane

switch to the taret "G"' via the messae Modify 0earer /esponse (1ause- "ervin G? Tunnel 2ndpoint&dentifier for 1ontrol Plane- "ervin G? ddress for 1ontrol Plane- Protocol 1onfiuration Options). t this

stae the user plane path is established for all 2P" 0earer contets between the 2- taret /'1- taret "G"' if

8irect Tunnel is not used- "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) andP8' G?.

&f the "ervin G? does not chane- the "ervin G? shall send one or more Lend mar#erL pac#ets on the old path immediately after switchin the path.

,+. ?hen the 2 reconises that its current /outin rea is not reistered with the networ#- or when the 2$s T&'indicates LGT&L- the 2 initiates a /outin rea pdate procedure with the taret "G"' informin it that the

2 is located in a new routin area. &t is /' functionality to provide the PMM=1O''21T28 2 with/outin rea information.

The taret "G"' #nows that an &/T @andover has been performed for this 2 as it received the bearercontet(s) by handover messaes and therefore the taret "G"' performs only a subset of the / procedure-

specifically it ecludes the contet transfer procedures between source MM2 and taret "G"'.

,,. ?hen the timer started at step : epires- the source MM2 sends a /elease /esources messae to the "ource

e'ode0. The "ource e'ode0 releases its resources related to the 2.

?hen the timer started in step : epires and if the source MM2 received the "ervin G? chane indication in

the 7orward /elocation /esponse messae- it deletes the 2P" bearer resources by sendin 8elete "ession/eDuest (1ause- Operation &ndication) messaes to the "ource "ervin G?. The operation indication fla is not

set- that indicates to the "ource "ervin G? that the "ource "ervin G? shall not initiate a delete procedure

towards the P8' G?. The "ource "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messaes.&f &"/ has been activated before this procedure- the cause indicates to the "ource "=G? that the "ource "=G?

shall delete the bearer resources on the other old 1' node by sendin 8elete 0earer /eDuest messae(s) to that

1' node.

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,*. &f indirect forwardin was used then the epiry of the timer at source MM2 started at step : triers the sourceMM2 to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to the "=G? to release the temporary

resources used for indirect forwardin.

,3. &f indirect forwardin was used and the "ervin G? is relocated- then the epiry of the timer at taret "G"'

started at step : triers the taret "G"' to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to

the taret "=G? to release temporary resources used for indirect forwardin.

!.!.2.1.4 E-UTR&* t" UTR&* :u 6"#e :'ter R&T ha'#"5er ReIect

The Taret /'1 may reject the use of the @andover procedure if none of the reDuested /0s in the /elocation /eDuest

messae could be established. &n this case no 2 contet is established in the taret "G"'A/'1 and no resources areallocated. The 2 remains in the "ource e'ode0AMM2.

UE S"urcee*"#eC Target R*+ S"urce MME Target SGS* Ser5i'g GA 7SS

1. 7a'#"5er :'itiati"' 2. 7a'#"5er ReDuire#


!. Re$"cati"' ReDuest

. Re$"cati"' ai$ure

.<. "rar# Re$"cati"' Res%"'se (ReIect)

P* GA




Target Ser5i'g GA




S"urce

0i1ure +'+'&'%'$%2 $!TRA" to !TRA" 7u mode 7nter RAT reject

,. The "tep , to 9 in the flow are identical to the ones in clause 9.9.*.,.*.

:. &f the Taret /'1 fails to allocate any resources for any of the reDuested /0s it sends a /elocation 7ailure(1ause) messae to the Taret "G"'. ?hen the Taret "G"' receives the /elocation 7ailure messae from

Taret /'1 the Taret "G"' clears any reserved resources for this 2.

<. This step is only performed for "ervin G? relocation- i.e. if "teps ;A;a have been performed. The Taret "G"'

deletes the 2P" bearer resources by sendin 8elete "ession /eDuest (1ause) messaes to the Taret "ervinG?. The Taret "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messaes.

>. The Taret "G"' sends the 7orward /elocation /esponse (1ause) messae to the "ource MM2.

C. ?hen the "ource MM2 receives the 7orward /elocation /esponse messae it send a @andover Preparation

7ailure (1ause) messae to the "ource e'ode0.

!.!.2.2 UTR&* :u 6"#e t" E-UTR&* :'ter R&T ha'#"5er

!.!.2.2.1 Ge'era$

The T/' &u mode to 2=T/' &nter /T handover procedure ta#es place when the networ# decides to perform a

handover. The decision to perform P" handover from T/' &u mode to 2=T/' is ta#en by the networ# based on

radio condition measurements reported by the 2 to the T/' /'1.

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&f emerency bearer services are onoin for the 2- the MM2 chec#s as part of the Trac#in rea pdate in theeecution phase- if the handover is to a restricted area and if so MM2 releases the non=emerency bearers as specified

in clause 9.,+.3.

&f emerency bearer services are onoin for the 2- the source "G"' evaluates the handover to the taret 1"G cell

independent of the 2$s 1"G subscription. &f the handover is to a 1"G cell that the 2 is not subscribed- the taret

e'ode0 only accepts the emerency bearers and the taret MM2 releases the non=emerency P8' connections thatwere not accepted by the taret e'ode0 as specified in clause 9.,+.3.


UE S"urceR*+

Targete*"#eC S"urce SGS* Target MME Ser5i'g GA 7SS


2. Re$"cati"' ReDuire# 3. "rar# Re$"cati"' ReDuest

!. 7a'#"5er ReDuest

!a. 7a'#"5er ReDuest &cB'"$e#ge

< . +reate :'#irect ata "rar#i'g Tu''e$ ReDuest


P*GA


U%$i'B a'# "'$i'B User P$a'e PUs (5ia S"urce SGS* i' case irect Tu''e$ is '"t use#)


a . +reate :'#irect ata "rar#i'g Tu''e$ Res%"'se

Target Ser5i'g GA



0i1ure +'+'&'&'&$%2 !TRA" 7u mode to $!TRA" 7nter RAT 5 preparation phase

,. The source /'1 decides to initiate an &nter=/T handover to the 2=T/'. t this point both uplin# and

downlin# user data is transmitted via the followinH 0earers between 2 and source /'1- GTP tunnel(s)

between source /'1- source "G"' (only if 8irect Tunnel is not used)- "ervin G? and P8' G?.


*. The source /'1 sends a /elocation /eDuired (1ause- Taret e'ode0 &dentifier- 1"G &8- 1"G access mode-

"ource /'1 &dentifier- "ource /'1 to Taret /'1 Transparent 1ontainer) messae to the source "G"' to

reDuest the 1' to establish resources in the taret e'ode0- Taret MM2 and the "ervin G?. The bearers thatwill be subject to data forwardin (if any) are identified by the taret MM2 in a later step (see step < below).?hen the taret cell is a 1"G cell or a hybrid cell- the source /'1 shall include the 1"G &8 of the taret cell. &f

the taret cell is a hybrid cell- the 1"G access mode shall be indicated.

3. The source "G"' determines from the $Taret e'ode0 &dentifier$ &2 that the type of handover is &/T

@andover to 2=T/'. The "ource "G"' initiates the @andover resource allocation procedure by sendin7orward /elocation /eDuest (&M"&- Taret &dentification- 1"G &8- 1"G Membership &ndication- MM 1ontet-

P8' 1onnections- "G"' Tunnel 2ndpoint &dentifier for 1ontrol Plane- "G"' ddress for 1ontrol plane-"ource to Taret Transparent 1ontainer- /' 1ause- M" &nfo 1hane /eportin ction (if available)- 1"G

&nformation /eportin ction (if available)- 2 Time None- &"/ "upported- "ervin 'etwor#- 1hane to /eport(if present)) messae to the taret MM2. This messae includes all 2P" 0earer contets correspondin to all the

bearers established in the source system and the uplin# Tunnel endpoint parameters of the "ervin G?. &f the

information &"/ "upported is indicated- this indicates that the source "G"' and associated "ervin G? arecapable to activate &"/ for the 2. ?hen &"/ is activated the messae should be sent to the MM2 that maintains&"/ for the 2 when this MM2 is servin the taret identified by the Taret &dentification. /' 1ause indicates

the 1ause as received from source /'1. The "ource to Taret Transparent 1ontainer contains the value from the

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"ource /'1 to Taret /'1 Transparent 1ontainer received from the "ource /'1. The old "ervin 'etwor# issent to taret MM2 to support the taret MM2 to resolve if "ervin 'etwor# is chaned.

1hane to /eport fla is included by the source "G"' if reportin of chane of 2 Time None- or "ervin 'etwor#- or both towards "ervin G? A P8' G? was deferred by the source "G"'.

The source "G"' shall perform access control by chec#in the 2$s 1"G subscription when 1"G &8 is

provided by the source /'1. &f there is no subscription data for this 1"G &8 or the 1"G subscription is epired-and the taret cell is a 1"G cell- the source "G"' shall reject the handover with an appropriate cause unless the

2 has emerency bearer services.

The source "G"' includes the 1"G &8 in the 7orward /elocation /eDuest when the taret cell is a 1"G cell orhybrid cell. ?hen the taret cell is a hybrid cell- or if there are one or several emerency bearers and the taret


This messae includes all P8' 1onnections active in the source system and for each P8' 1onnection includesthe associated P'- the address and the uplin# tunnel endpoint parameters of the "ervin G? for control plane-

and a list of 2P" 0earer 1ontets.

Prioriti!ation of 2P" 0earer 1ontets is performed by the taret core networ# node.

The MM contet contains security related information- e.. 2 'etwor# capabilities and used MT" interityand cipherin alorithm(s) as well as #eys- as described in clause 9.<.* (&nformation "torae for MM2).

The taret MM2 selects the '" cipherin and interity alorithms to use. These alorithms will be senttransparently from the taret e'ode0 to the 2 in the Taret to "ource Transparent 1ontainer (2P1 part).

The MM2 establishes the 2P" bearer(s) in the prioriti!ed order. The MM2 deactivates- as provided in step > of

the eecution phase- the 2P" bearers which cannot be established.

The taret MM2 shall determine the Maimum P' restriction based on the P' /estriction of each bearercontet received in the 7orward /elocation /eDuest- and shall subseDuently store the new Maimum P'

restriction value.


source "G"' shall include the 5ocal @ome 'etwor# &8 of the source cell in the P8' 1onnectionscorrespondin to the "&PTO at the 5ocal 'etwor# P8' connection.

;. The taret MM2 determines if the "ervin G? is to be relocated- e..- due to P5M' chane. &f the "ervin G?

is to be relocated- the taret MM2 selects the taret "ervin G? as described under clause ;.3.>.* on L"ervin

G? selection functionL. The taret MM2 sends a 1reate "ession /eDuest messae (&M"&- MM2 ddress andT2&8- MM2 Tunnel 2ndpoint &dentifier for 1ontrol Plane- MM2 ddress for 1ontrol plane- P8' G?

address(es) for user plane- P8' G? 5 T2&8(s) for user plane- P8' G? address for control plane- and P8'G? T2&8(s) for control plane- the Protocol Type over "9A">- "ervin 'etwor#) per P8' connection to the

taret "ervin G?. The Protocol Type over "9A"> is provided to "ervin G? which protocol should be usedover "9A"> interface.

;a. The taret "ervin G? allocates its local resources and returns them in a 1reate "ession /esponse ("ervin G?address(es) for user plane- "ervin G? 5 T2&8(s) for user plane- "ervin G? ddress for control plane-

"ervin G? T2&8 for control plane) messae to the taret MM2.

9. The taret MM2 reDuests the taret e'ode0 to establish the bearer(s) by sendin the messae @andover /eDuest

(2 &dentifier- ",P 1ause- % e'0- allowed " &nterity Protection and 1ipherin alorithm(s)- '" "ecurity

Parameters to 2=T/'- 2P" 0earers to be setup list- 1"G &8- 1"G Membership &ndication- "ource to TaretTransparent 1ontainer). The '" "ecurity Parameters to 2=T/' includes the '" &nterity Protection and

1ipherin alorithm(s)- e%"& and 'O'12MM2 are tareted for the 2. ",P 1ause indicates the /' 1ause as

received from source "G"'. The "ource to Taret Transparent 1ontainer contains the value from the /'Transparent 1ontainer received from the source "G"'.

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'OT2 *H The taret MM2 derives %$"M2 from 1% and &% in the MM contet and associates it with e%"&- as

described in T" 33.;+, J;,K and selects '" &nterity Protection and 1ipherin alorithm(s). The MM2

and 2 derive the '" #eys and % e'0 from %$"M2. &f the MM2 shares an 2P" security association withthe 2- the MM2 may activate this native 2P" security contet by initiatin a '" "M1 procedure after

havin completed the handover procedure.

7or each 2P" bearer reDuested to be established- $2P" 0earers To 0e "etup$ &2 shall contain information such as&8- bearer parameters- Transport 5ayer ddress- L8ata forwardin not possibleL indication- and ", Transport

ssociation. The taret MM2 inores any ctivity "tatus &ndicator within an 2P" 0earer 1ontet and reDueststhe taret e'ode0 to allocate resources for all 2P" 0earer 1ontets received from the source side. The Transport

5ayer ddress is the "ervin G? ddress for user data- and the ", Transport ssociation corresponds to theuplin# Tunnel 2ndpoint &dentifier 8ata. L8ata forwardin not possibleL indication shall be included if the taret

MM2 decides the correspondin bearer will not be subject to data forwardin.

The taret MM2 shall include the 1"G &8 and 1"G Membership &ndication when provided by the source "G"'

in the @andover /eDuest messae.

The information about the selected '" cipherin and interity protection alorithm(s)- %"& and 'O'12MM2

will be sent transparently from the taret e'ode0 to the 2 in the Taret to "ource Transparent 1ontainer- and

in the messae T/' @O 1ommand from source /'1 to the 2. This will then allow data transfer tocontinue in the new /TAmode taret cell without reDuirin a new % (uthentication and %ey reement)

procedure. More details are described in T" 33.;+, J;,K.

&f the taret cell is a 1"G cell- the taret e'ode0 shall verify the 1"G &8 provided by the taret MM2- and

reject the handover with an appropriate cause if it does not match the 1"G &8 for the taret cell. &f the tarete'ode0 is in hybrid mode- it may use the 1"G Membership "tatus to perform differentiated treatment for 1"G

and non=1"G members. &f the taret cell is a 1"G cell- and if the 1"G Membership &ndication is Lnon memberL-the taret e'ode0 only accepts the emerency bearers.

9a. The taret e'ode0 allocates the reDuested resources and returns the applicable parameters to the taret MM2 inthe messae @andover /eDuest c#nowlede (Taret to "ource Transparent 1ontainer- 2P" 0earers setup list-

2P" 0earers failed to setup list). The taret e'ode0 shall inore it if the number of radio bearers in the "ource toTaret Transparent container does not comply with the number of bearers reDuested by the MM2 and allocate

bearers as reDuested by the MM2. pon sendin the @andover /eDuest c#nowlede messae the tarete'ode0 shall be prepared to receive downlin# GTP P8s from the "ervin G? for the accepted 2P" bearers.

The taret e'ode0 selects " interity and cipherin alorithm(s). &n addition to the information provided by

the MM2 (e%"&- '" &nterity Protection and 1ipherin alorithm(s) and 'O'12MM2)- the taret e'ode0

inserts " interity and cipherin alorithm(s) into the T/' //1 messae- which is contained in the Taret

to "ource Transparent 1ontainer.

:. &f $&ndirect 7orwardin$ and relocation of "ervin G? apply the taret MM2 sends a 1reate &ndirect 8ata

7orwardin Tunnel /eDuest messae (Taret e'ode0 ddress- T2&8(s) for 85 data forwardin) to the "ervinG?.



:a. The "ervin G? returns a 1reate &ndirect 8ata 7orwardin Tunnel /esponse (1ause- "ervin G? ddress(es)and "ervin G? 85 T2&8(s) for data forwardin) messae to the taret MM2.

<. The taret MM2 sends the messae 7orward /elocation /esponse (1ause- 5ist of "et p /0s- 2P" 0earerssetup list- MM2 Tunnel 2ndpoint &dentifier for 1ontrol Plane- /' 1ause- MM2 ddress for control plane-

Taret to "ource Transparent 1ontainer- ddress(es) and T2&8(s) for 8ata 7orwardin- "ervin G? chaneindication) to the source "G"'. "ervin G? chane indication indicates whether a new "ervin G? has been

selected. The Taret to "ource Transparent 1ontainer includes the value from the Taret to "ource Transparent1ontainer received from the taret e'ode0.

The &2 $ddress(es) and T2&8(s) for ser Traffic 8ata 7orwardin$ defines the destination tunnellin endpointfor data forwardin in taret system- and it is set as follows. &f $8irect 7orwardin$ or if $&ndirect 7orwardin$ but

no relocation of "ervin G? applies- then the &2s $ddress(es) and T2&8(s) for 8ata 7orwardin$ contains theforwardin 85 GTP= tunnel endpoint parameters to the e'ode0 received in step 9a.

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&f $&ndirect 7orwardin$ and relocation of "ervin G? apply the &2s $ddress(es) and T2&8(s) for 8ata7orwardin$ contains the 85 GTP= tunnel endpoint parameters to the Taret e'ode0 or to the forwardin

"ervin G? received in step :a.

>. &f L&ndirect 7orwardinL applies- the source "G"' shall send the messae 1reate &ndirect 8ata 7orwardin

Tunnel /eDuest (ddress(es) and T2&8(s) for 8ata 7orwardin (received in step <)) to the "ervin G? used for

indirect forwardin.



>a. The "ervin G? returns the forwardin user plane parameters by sendin the messae 1reate &ndirect 8ata7orwardin Tunnel /esponse (1ause- "ervin G? ddress(es) and T2&8(s) for data forwardin). &f the "ervin

G? doesn$t support data forwardin- an appropriate cause value shall be returned and the "ervin G?ddress(es) and T2&8(s) will not be included in the messae.


UE

S"urce

R*+

Target

e*"#eC S"urce SGS* Target MME Ser5i'g GA 7SS

P*

GA

U%$i'B a'# "'$i'B User P$a'e PUs (5ia S"urce SGS* i irect Tu''e$ is '"t use#)

1. Re$"cati"' +"66a'#

2. 78 r"6 UTR&* +"66a'#

4. E-UTR&* &ccess Pr"ce#ures

!. 78 t" E-UTR&* +"6%$ete

. 7a'#"5er *"ti;




a. M"#i; Cearer Res%"'se



"'$i'B Pa;$"a# User P$a'e PUs (5ia S"urce SGS* i irect Tu''e$ is '"t use#)

: irect "rar#i'g a%%$ies

: :'#irect "rar#i'g a%%$ies

Target

Ser5i'g GA

"r Ser5i'g GA re$"cati"' Ste%s <, a'# 10,a'# the "$$"i'g User P$a'e %ath, i$$ eha'#$e# ; Target Ser5i'g GA

(A) . M"#i; Cearer ReDuest

11. TracBi'g &rea U%#ate %r"ce#ure


(>)

12a. e$ete Sessi"' Res%"'se

12. :u Re$ease+"66a'#+"6%$eti"'

Se'#i'g "u%$i'B #ata%"ssi$e


Via S"urce SGS* i' case irect Tu''e$ is '"t use#

S"urce




0i1ure +'+'&'&'3$%2 !TRA" 7u mode to $!TRA" 7nter RAT 5 eFecution phase

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3GPP TS &3'% *%&'3' (&%3$%&)%/+Release %&

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'OT2 ,H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "tep (0) shows P1/7interaction in the case of PM&P=based "9A">. "teps C and Ca concern GTP based "9A">.

The source /'1 continues to receive downlin# and uplin# user plane P8s.

,. The source "G"' completes the preparation phase towards source /'1 by sendin the messae /elocation

1ommand (Taret /'1 to "ource /'1 Transparent 1ontainer- /0s to be /eleased 5ist- /0s "ubject to

8ata 7orwardin 5ist). The L/0s to be /eleased listL &2 will be the list of all '"P&s (/0 &ds) for which a0earer was not established in Taret e'ode0. The L/0s "ubject to 8ata forwardin listL &2 may be included in

the messae and it shall be a list of $ddress(es) and T2&8(s) for user traffic data forwardin$ received from

taret side in step < of the preparation phase when $8irect 7orwardin$ applies. &f $&ndirect 7orwardin$ isapplicable and 8irect Tunnel is used the L/0s "ubject to 8ata 7orwardin 5istL &2 includes the parameters

received in "tep >a of the preparation phase. &f $&ndirect 7orwardin$ is applicable and 8irect Tunnel is not usedthe L/0s "ubject to 8ata 7orwardin 5istL &2 includes the source "G"' address(es) and T2&8(s) allocated for

indirect data forwardin by "ource "G"'. The Taret /'1 to "ource /'1 Transparent 1ontainer contains thevalue from the Taret to "ource Transparent 1ontainer received from the taret MM2.

*. The source /'1 will command to the 2 to handover to the taret e'ode0 via the messae @O from T/'1ommand. The access networ# specific messae to 2 includes a transparent container includin radio aspect

parameters that the taret e'ode0 has set=up in the preparation phase.

The source /'1 may initiate data forwardin for the indicated /0sA2P" 0earer contets specified in theL/0s "ubject to 8ata 7orwardin 5istL. The data forwardin may o directly to taret e'ode0- or alternatively

o via the "ervin G? if so decided by source "G"' andAor taret MM2 in the preparation phase.

pon the reception of the @O from T/' 1ommand messae containin the /elocation 1ommand messae-the 2 shall associate its /0 &8s to the respective bearers &8 based on the relation with the '"P& and shall

suspend the uplin# transmission of the user plane data.

3. Boid.

;. The 2 moves to the 2=T/' and performs access procedures toward taret e'ode0.

9. ?hen the 2 has ot access to taret e'ode0 it sends the messae @O to 2=T/' 1omplete.

The 2 shall implicitly derive the 2P" bearers for which an 2=/0 was not established from the @O fromT/' 1ommand and deactivate them locally without an eplicit '" messae at this step.

:. ?hen the 2 has successfully accessed the taret e'ode0- the taret e'ode0 informs the taret MM2 bysendin the messae @andover 'otify (T&S21G&- 5ocal @ome 'etwor# &8).

7or "&PTO at the 5ocal 'etwor# with stand=alone G? architecture- the taret e'ode0 shall include the 5ocal

@ome 'etwor# &8 of the taret cell in the @andover 'otify messae.

<. Then the taret MM2 #nows that the 2 has arrived to the taret side and taret MM2 informs the source "G"' by sendin the 7orward /elocation 1omplete 'otification (&"/ ctivated- "ervin G? chane) messae. &f &"/

ctivated is indicated- this indicates to the source "G"' that it shall maintain the 2$s contets and activate&"/- which is only possible when the "=G? is not chaned. The source "G"' shall also ac#nowlede that

information. timer in source "G"' is started to supervise when resources in the in "ource /'1 and "ource"ervin G? (for "ervin G? relocation) shall be released

pon receipt of the 7orward /elocation 1omplete c#nowlede messae the taret MM2 starts a timer if thetaret MM2 applies indirect forwardin.

>. The taret MM2 will now complete the &nter=/T @andover procedure by informin the "ervin G? (for

"ervin G? relocation this will be the Taret "ervin G?) that the taret MM2 is now responsible for all the

bearers the 2 have established. This is performed in the messae Modify 0earer /eDuest (1ause- MM2 Tunnel2ndpoint &dentifier for 1ontrol Plane- 2P" 0earer &8- MM2 ddress for 1ontrol Plane- e'ode0 ddress(es)

and T2&8(s) for ser Traffic for the accepted 2P" bearers and /T type- &"/ ctivated) per P8' connection.&f the P8' G? reDuested 2$s location andAor ser 1"G information (determined from the 2 contet)- the

MM2 also includes the ser 5ocation &nformation &2 andAor ser 1"G &nformation &2 in this messae. &f eitherthe 2 Time None has chaned or 7orward /elocation /eDuest messae from source "G"' indicated pendin

2 Time None chane reportin (via 1hane to /eport fla)- the MM2 includes the 2 Time None &2 in thismessae. &f either "ervin G? is not relocated but the "ervin 'etwor# has chaned or 7orward /elocation

/eDuest messae from source "G"' indicated pendin "ervin 'etwor# chane reportin (via 1hane to /eport

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fla)- the MM2 includes the new "ervin 'etwor# &2 in this messae. &f indicated- the information &"/ctivated indicates that &"/ is activated- which is only possible when the "=G? was not chaned. ?hen the

Modify 0earer /eDuest does not indicate &"/ ctivated and "=G? is not chaned- the "=G? deletes any &"/resources by sendin a 8elete 0earer /eDuest to the other 1' node that has bearer resources on the "=G?

reserved.

The MM2 releases the non=accepted dedicated bearers by trierin the bearer release procedure as specified inclause 9.;.;.*. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85 pac#et and does not send a 8ownlin# 8ata 'otification to the MM2.

&f the default bearer of a P8' connection has not been accepted by the taret e'ode0 and there are other P8'connections active- the MM2 shall handle it in the same way as if all bearers of a P8' connection have not been

accepted. The MM2 releases these P8' connections by trierin the MM2 reDuested P8' disconnection procedure specified in clause 9.,+.3.

'OT2 *H 8urin the MM2 reDuested P8' disconnection procedure- the P8' G? can delay the deletion of theP8' connection based on an implementation dependent mechanism to avoid possible impact on the

handover of the correspondin P8' connection to the ?5' access networ#. ntil the P8'connection(s) are established via ?5' access networ#- P8' G? will bloc# downlin# data for affected

P8'(s).

C. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) may inform the P8' G? thechane of for eample for "ervin G? relocation or the /T type that e.. can be used for charin- by sendin

the messae Modify 0earer /eDuest per P8' connection. The "=G? also includes ser 5ocation &nformation

&2 andAor 2 Time None &2 andAor ser 1"G &nformation &2 if they are present in step >. "ervin 'etwor#should be included if it is received in step > or in step ; in clause 9.9.*.*.*. 7or "ervin G? relocation- the

"ervin G? allocates 85 T2&8s on "9A"> even for non=accepted bearers and may include the P8' 1harinPause "upport &ndication. The P8' G? must ac#nowlede the reDuest with the messae Modify 0earer

/esponse. &n the case of "ervin G? relocation- the P8' G? updates its contet field and returns a Modify0earer /esponse (1harin &d- M"&"8'- P8' 1harin Pause 2nabled &ndication (if P8' G? has chosen to

enable the function)- etc.) messae to the "ervin G?. The M"&"8' is included if the P8' G? has it stored inits 2 contet.


&f the "ervin G? is relocated- the P8' G? shall send one or more Lend mar#erL pac#ets on the old pathimmediately after switchin the path in order to assist the reorderin function in the taret e'ode0. The source

"ervin G? shall forward the Lend mar#erL pac#ets to the source "G"' or /'1.

,+. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) ac#nowledes the user planeswitch to the taret MM2 via the messae Modify 0earer /esponse (1ause- "ervin G? Tunnel 2ndpoint

&dentifier for 1ontrol Plane- "ervin G? ddress for 1ontrol Plane- Protocol 1onfiuration Options). t thisstae the user plane path is established for all bearers between the 2- taret e'ode0- "ervin G? (for "ervin

G? relocation this will be the Taret "ervin G?) and P8' G?.

&f the "ervin G? does not chane- the "ervin G? shall send one or more Lend mar#erL pac#ets on the old

path immediately after switchin the path in order to assist the reorderin function in the taret e'ode0.

,,. The 2 initiates a Trac#in rea pdate procedure when one of the conditions listed in clause LTriers for


The taret MM2 #nows that an &/T @andover has been performed for this 2 as it received the bearer

contet(s) by handover messaes and therefore the taret MM2 performs only a subset of the T update procedure- specifically it ecludes the contet transfer procedures between source "G"' and taret MM2.

,*. ?hen the timer started in step < epires the source "G"' will clean=up all its resources towards source /'1 bysendin the &u /elease 1ommand to the /'1. ?hen there is no loner any need for the /'1 to forward data-

the source /'1 responds with an &u /elease 1omplete messae.

?hen the timer started in step < epires and if the source "G"' received the "ervin G? chane indication in

the 7orward /elocation /esponse messae- it deletes the 2P" bearer resources by sendin 8elete "ession/eDuest (1ause- Operation &ndication) messaes to the "ource "ervin G?. The operation &ndication fla is not

set- that indicates to the "ource "ervin G? that the "ource "ervin G? shall not initiate a delete proceduretowards the P8' G?. The "ource "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messaes.

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&f &"/ has been activated before this procedure- the cause indicates to the "ource "=G? that the "ource "=G?shall delete the bearer resources on the other old 1' node by sendin 8elete 0earer /eDuest messae(s) to that

1' node.

,3. &f indirect forwardin was used then the epiry of the timer at source "G"' started at step < triers the source

"G"' to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to the "=G? to release the temporary


,;. &f indirect forwardin was used and the "ervin G? is relocated- then the epiry of the timer at taret MM2

started at step < triers the taret MM2 to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to

the taret "=G? to release temporary resources used for indirect forwardin.

!.!.2.2.4 UTR&* :u 6"#e t" E-UTR&* :'ter R&T ha'#"5er reIect

The Taret e'ode0 may reject the use of the @andover procedure if none of the reDuested 2P" bearers in the @andover/eDuest messae could be established. &n this case no 2 contet is established in the taret MM2Ae'ode0 and no

resources are allocated. The 2 remains in the "ource /'1A"G"'.

UE

S"urce

R*+ Target

e*"#eC S"urce SGS* Target MME Ser5i'g GA 7SS


2. Re$"cati"' ReDuire# 3. "rar# Re$"cati"' ReDuest

!. 7a'#"5er ReDuest

. 7a'#"5er ai$ure

<. "rar# Re$"cati"' Res%"'se (ReIect)

P*

GA



Target Ser5i'g GA



. Re$"cati"' Pre%arati"' ai$ure

U%$i'B a'# "'$i'B User P$a'e PUs (5ia S"urce SGS* i' case irect Tu''e$ is '"t use#)

S"urce

0i1ure +'+'&'&'$%2 !TRA" 7u mode to $!TRA" 7nter RAT reject

,. "teps , to 9 in the flow are identical to the ones in clause 9.9.*.*.*.

:. &f the Taret e'ode0 fails to allocate any resources for any of the reDuested 2P" 0earers it sends a @andover7ailure (1ause) messae to the Taret MM2. ?hen the Taret MM2 receives the @andover 7ailure messae

from Taret e'ode0 the Taret MM2 clears any reserved resources for this 2.

<. This step is only performed for "ervin G? relocation- i.e. if "teps ;A;a have been performed. The Taret MM2deletes the 2P" bearer resources by sendin 8elete "ession /eDuest (1ause) messaes to the Taret "ervin


>. The Taret MM2 sends the 7orward /elocation /esponse (1ause) messae to the "ource "G"'.

C. ?hen the "ource "G"' receives the 7orward /elocation /esponse messae it send a /elocation Preparation

7ailure (1ause) messae to the "ource /'1.

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3GPP TS &3'% *%&'3' (&%3$%&)%/.Release %&

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!.!.2.3 E-UTR&* t" GER&* &G 6"#e :'ter R&T ha'#"5er

!.!.2.3.1 Ge'era$

The procedure is based on Pac#et=switched handover for G2/' AGb mode defined in T" ;3.,*C J>K.

Pre=conditionsH

= The 2 is in 21M=1O''21T28 state (2=T/' mode)I

= The 0"" must support P7M- Pac#et 7low Manaement- procedures.


UE S"urcee*"#eC Target CSS S"urce MME Target SGS* Ser5i'g GA 7SS

1. 7a'#"5er :'itiati"' 2. 7a'#"5er ReDuire#


!. PS 7a'#"5er ReDuest

!a. PS 7a'#"5er ReDuest &cB'"$e#ge



P* GA



Target Ser5i'g GA





S"urce

0i1ure +'+'&'3'&$%2 $!TRA" to GRA" AG4 7nter RAT 5 preparation phase

,. The source e'ode0 decides to initiate an &nter /T @andover to the taret G2/' AGb mode (*G) system. tthis point both uplin# and downlin# user data is transmitted via the followinH 0earer(s) between 2 and "ource

e'ode0- GTP tunnel(s) between "ource e'ode0- "ervin G? and P8' G?.

&f the 2 has an onoin emerency bearer service the source e'ode0 shall not initiate P" handover to G2/'.

'OT2 ,H The process leadin to the handover decision is outside of the scope of this specification

*. The source e'ode0 sends a @andover /eDuired (",P 1ause- Taret "ystem &dentifier- "ource to Taret

Transparent 1ontainer) messae to the "ource MM2 to reDuest the 1' to establish resources in the Taret 0""-Taret "G"' and the "ervin G?. The bearers that will be subject to data forwardin (if any) are identified by

the taret "G"' in a later step (see step < below).

The $Taret "ystem &dentifier$ &2 contains the identity of the taret lobal cell &d.

3. The "ource MM2 determines from the $Taret "ystem &dentifier$ &2 that the type of handover is &/T @andoverto G2/' AGb mode. The "ource MM2 initiates the @andover resource allocation procedure by sendin a

7orward /elocation /eDuest (&M"&- Taret &dentification (shall be set to LemptyL)- MM 1ontet- P8'1onnections- MM2 Tunnel 2ndpoint &dentifier for 1ontrol Plane- MM2 ddress for 1ontrol plane- "ource to

Taret Transparent 1ontainer- Pac#et 7low &8- F&8 parameters (if available)- Taret 1ell &dentification- M"&nfo 1hane /eportin ction (if available)- 1"G &nformation /eportin ction (if available)- 2 Time None-

&"/ "upported- /' 1ause- "ervin 'etwor#) messae to the taret "G"'. &f the information &"/ "upported isindicated- this indicates that the source MM2 and associated "ervin G? are capable to activate &"/ for the 2.

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?hen &"/ is activated the messae should be sent to the "G"' that maintains &"/ for the 2 when this "G"' isservin the taret identified by the Taret &dentification. This messae includes all P8' 1onnections active in

the source system and for each P8' 1onnection includes the associated P'- the address and the uplin# Tunnelendpoint parameters of the "ervin G? for control plane- and a list of 2P" 0earer 1ontets. The old "ervin

'etwor# is sent to taret MM2 to support the taret MM2 to resolve if "ervin 'etwor# is chaned. &n networ#sharin scenarios "ervin 'etwor# denotes the servin core networ#.

The taret "G"' maps the 2P" bearers to P8P contets ,=to=, and maps the 2P" 0earer Eo" parameter valuesof an 2P" bearer to the /elease CC Eo" parameter values of a bearer contet as defined in nne 2.

Prioriti!ation of P8P 1ontets is performed by the taret core networ# node- i.e. taret "G"'.

&f the "ource MM2 supports &/T @andover to G2/' AGb procedure it has to allocate a valid P7& durin

the bearer activation procedure. /' 1ause indicates the ",P 1ause as received from the source e'ode0. The"ource to Taret Transparent 1ontainer includes the value from the "ource to Taret Transparent 1ontainer

received from the source e'ode0.

The MM contet contains security related information- e.. supported cipherin alorithms- as described in

T" *C.*<; J;3K. @andlin of security #eys is described in T" 33.;+, J;,K.

The taret "G"' selects the cipherin alorithm to use. This alorithm will be sent transparently from the taret"G"' to the 2 in the '" container for @andover (part of the Taret to "ource Transparent 1ontainer). The&OB=& parameter- enerated in the taret "G"'- is used as input to the cipherin procedure and it will also be

transferred transparently from the taret "G"' to the 2 in the '" container for @andover. More details aredescribed in T" 33.;+, J;,K.

?hen the taret "G"' receives the 7orward /elocation /eDuest messae the reDuired 2P" 0earer- MM-"'81P and 551 contets are established and a new P=TM"& is allocated for the 2. ?hen this messae is

received by the taret "G"'- it beins the process of establishin P71s for all 2P" 0earer contets.

?hen the taret "G"' receives the 7orward /elocation /eDuest messae it etracts from the 2P" 0earer

1ontets the '"P&s and "P&s and P7&s to be used in the taret "G"'. &f for a iven 2P" 0earer 1ontet the

taret "G"' does not receive a P7& from the source MM2- it shall not reDuest the taret 0"" to allocate T07resources correspondin to that 2P" 0earer 1ontet. &f none of the 2P" 0earer 1ontets forwarded from the

source MM2 has a valid P7& allocated the taret "G"' shall consider this as a failure case and the reDuest for

@andover shall be rejected.

&f when an "P& and P7& was available at the source MM2 but the taret "G"' does not support the same "P&

and P7& for a certain '"P& as the source MM2- the taret "G"' shall continue the @andover procedure onlyfor those '"P&s for which it can support the same P7& and "P& as the source MM2. ll 2P" 0earer contets

for which no resources are allocated by the taret "G"' or for which it cannot support the same "P& and P7&(i.e. the correspondin '"P&s are not addressed in the response messae of the taret "G"')- are maintained

and the related "P&s and P7&s are #ept. These 2P" 0earer contets may be modified or deactivated by thetaret "G"' via eplicit "M procedures upon / procedure.

The source MM2 shall indicate the current F&8 parameter settins if available (i.e. those F&8 parameters

received durin a previous &/T @andover procedure) to the taret "G"'. &f the taret "G"' can accept all

F&8 parameters as indicated by the source MM2- the taret "G"' shall create a '" container for @andoverindicatin $/eset to the old F&8 parameters$. Otherwise- if the taret "G"' cannot accept all F&8 parameters

indicated by the source MM2 or if no F&8 parameters were indicated by the source MM2- the taret "G"' shallcreate a '" container for @andover indicatin /eset (i.e. reset to default parameters).

The taret "G"' shall determine the Maimum P' restriction based on the P' /estriction of each bearercontet received in the 7orward /elocation /eDuest- and shall subseDuently store the new Maimum P'

restriction value.


source MM2 shall include the 5ocal @ome 'etwor# &8 of the source cell in the P8' 1onnectionscorrespondin to the "&PTO at the 5ocal 'etwor# P8' connection.

;. The taret "G"' determines if the "ervin G? is to be relocated- e..- due to P5M' chane. &f the "ervin G?is to be relocated- the taret "G"' selects the taret "ervin G? as described under clause ;.3.>.* on L"ervin

G? selection functionL- and sends a 1reate "ession /eDuest messae (&M"&- "G"' Tunnel 2ndpoint &dentifierfor 1ontrol Plane- "G"' ddress for 1ontrol plane- P8' G? address(es) for user plane- P8' G? 5 T2&8(s)

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for user plane- P8' G? address(es) for control plane- and P8' G? T2&8(s) for control plane- the ProtocolType over "9A">- "ervin 'etwor#) per P8' connection to the taret "ervin G?. The Protocol Type over

"9A"> is provided to "ervin G? which protocol should be used over "9A"> interface.

;a. The taret "ervin G? allocates its local resources and returns a 1reate "ession /esponse ("ervin G?

address(es) for user plane- "ervin G? 5 T2&8(s) for user plane- "ervin G? ddress for control plane-

"ervin G? T2&8 for control plane) messae to the taret "G"'.

9. The taret "G"' establishes the 2P" 0earer contet(s) in the indicated order. The "G"' deactivates- as

provided in step C of the eecution phase- the 2P" 0earer contets which cannot be established.

The Taret "G"' reDuests the Taret 0"" to establish the necessary resources (P71s) by sendin the messaeP" @andover /eDuest (5ocal T55&- &M"&- 1ause- Taret 1ell &dentifier- P71s to be set=up list- "ource /'1 to

Taret 0"" Transparent 1ontainer and '" container for handover). The taret "G"' shall not reDuestresources for which the ctivity "tatus &ndicator within a 2P" 0earer 1ontet indicates that no active bearer

eists on the source side for that P8P contet. The 1ause indicates the /' 1ause as received from the sourceMM2. The "ource /'1 to Taret 0"" Transparent 1ontainer contains the value from the "ource to Taret

Transparent 1ontainer received from the source MM2. ll 2P" 0earer 1ontets indicate active status because2=T/' does not support selective /0 handlin.

0ased upon the 0EP for each P71 the taret 0"" ma#es a decision about which P71s to assin radioresources. The alorithm by which the 0"" decides which P71s that need resources is implementation specific.8ue to resource limitations not all downloaded P71s will necessarily receive resource allocation. The taret 0""

allocates T07s for each P71 that it can accommodate.

The taret 0"" shall prepare the $Taret to "ource Transparent 1ontainer$ which contains a P" @andover1ommand includin the 2P1 part ('" container for @andover) and the /' part (@andover /adio /esources).

9a. The Taret 0"" allocates the reDuested resources and returns the applicable parameters to the Taret "G"' inthe messae P" @andover /eDuest c#nowlede (5ocal T55&- 5ist of set=up P71s- Taret 0"" to "ource /'1

Transparent 1ontainer- 1ause). pon sendin the P" @andover /eDuest c#nowlede messae the taret 0""shall be prepared to receive downlin# 551 P8s from the taret "G"' for the accepted P71s.

ny 2P" 0earer contets for which a P71 was not established are maintained in the taret "G"' and the related

"P&s and P7&s are #ept. These 2P" 0earer contets shall be deactivated by the taret "G"' via eplicit "M

procedures upon the completion of the routin area update (/) procedure.

:. &f indirect forwardin and relocation of "ervin G? applies the taret "G"' sends a 1reate &ndirect 8ata

7orwardin Tunnel /eDuest messae (Taret "G"' ddress(es) and T2&8(s) for 85 data forwardin) to the"ervin G? used for indirect pac#et forwardin.


:a. The "ervin G? returns a 1reate &ndirect 8ata 7orwardin Tunnel /esponse (1ause- "ervin G? 85ddress(es) and T2&8(s) for data forwardin) messae to the taret "G"'.

<. The Taret "G"' sends the messae 7orward /elocation /esponse (1ause- "G"' Tunnel 2ndpoint &dentifierfor 1ontrol Plane- "G"' ddress for 1ontrol Plane- Taret to "ource Transparent 1ontainer- /' 1ause- 5ist

of set=up P7&s- ddress(es) and T2&8(s) for ser Traffic 8ata 7orwardin- "ervin G? chane indication) tothe "ource MM2. "ervin G? chane indication indicates a new "ervin G? has been selected. /' 1ause

indicates the 1ause as received from the taret 0"". The Taret to "ource Transparent 1ontainer includes thevalue from the Taret 0"" to "ource /'1 Transparent 1ontainer received from the taret 0"".

&f $&ndirect 7orwardin$ and relocation of "ervin G? applies- then the &2s $ddress(es) and T2&8(s) for ser

Traffic 8ata 7orwardin$ contain the 85 GTP= tunnel endpoint parameters received in step :a. Otherwise the&2s $ddress(es) and T2&8(s) for ser Traffic 8ata 7orwardin$ contains the 85 GTP= tunnel endpoint

parameters to the Taret "G"'.

The taret "G"' activates the allocated 551A"'81P enines as specified in T" ;;.+:; J*3K for an "G"'oriinated /eset or $/eset to the old F&8 parameters$.

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>. &f L&ndirect 7orwardinL applies- the "ource MM2 sends the messae 1reate &ndirect 8ata 7orwardin Tunnel/eDuest (ddress(es) and T2&8(s) for 8ata 7orwardin (received in step <)) to the "ervin G? used for indirect

pac#et forwardin.



>a. The "ervin G? returns the forwardin user plane parameters by sendin the messae 1reate &ndirect 8ata7orwardin Tunnel /esponse (1ause- "ervin G? ddress(es) and T2&8(s) for 8ata 7orwardin). &f the

"ervin G? doesn$t support data forwardin- an appropriate cause value shall be returned and the "ervin G?

ddress(es) and T2&8(s) will not be included in the messae.

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3GPP TS &3'% *%&'3' (&%3$%&)&&Release %&

8/13/2019 23401-c30



UE

S"urcee*"#eC Target CSS S"urce MME Target SGS* Ser5i'g GA 7SS

P*GA


1. 7a'#"5er +"66a'#

2. 78 r"6 E-UTR&* +"66a'#


4. GER&* &G &ccess Pr"ce#ures

!. O: Res%"'se

. PS 7a'#"5er +"6%$ete

<. "rar# Re$"cati"' +"6%$ete *"tiicati"'

<a. "rar# Re$"cati"' +"6%$ete &cB'"$e#ge




. O: Res%"'se

12. O: *eg"tiati"' "r LL+ &M

12a. S&CM U& e/cha'ge re-esta$ish6e't a'# O: 'eg"tiati"' "r LL+ &CM)


8'$; i >irect "rar#i'g> a%%$ies

Target Ser5i'g GA

"r Ser5i'g GA re$"cati"' Ste%s , 10 a'# 11,a'# the "$$"i'g User P$a'e %ath, i$$ eha'#$e# ; Target Ser5i'g GA

(A) 10. M"#i; Cearer ReDuest

10a. M"#i; Cearer Res%"'se

13. R"utei'g &rea U%#ate %r"ce#ure

14. Re$ease Res"urce 14. e$ete Sessi"' ReDuest

(>)


8'$; i >:'#irect "rar#i'g> a%%$ies

1!. e$ete :'#irect ata "rar#i'g Tu''e$ ReDuest

S"urce

1!a. e$ete :'#irect ata "rar#i'g Tu''e$ Res%"'se



13a. PS 7a'#"5er +"6%$ete &cB

0i1ure +'+'&'3'3$%2 $!TRA" to GRA" AG4 mode 7nter RAT 5 eFecution phase

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () and (0) are defined in T" *3.;+* J*K. "tep (0) shows P1/7interaction in the case of PM&P=based "9A">. "teps ,+ and ,+a concern GTP based "9A">

The source e'ode0 continues to receive downlin# and uplin# user plane P8s.

,. The "ource MM2 completes the preparation phase towards "ource e'ode0 by sendin the messae @andover

1ommand (Taret to "ource Transparent 1ontainer (P" @andover 1ommand with /' part and 2P1 part)-

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3GPP TS &3'% *%&'3' (&%3$%&)&3Release %&

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2=/0s to /elease 5ist- 0earers "ubject to 8ata 7orwardin 5ist)- ",P 1ause. The L0earers "ubject to 8ataforwardin listL may be included in the messae and it shall be a list of $ddress(es) and T2&8(s) for user traffic

data forwardin$ received from taret side in the preparation phase ("tep < of the preparation phase for 8irect7orwardin- else parameters received in "tep >a of the preparation phase). ",P 1ause indicates the /' 1ause

as received from the taret "G"'.

"ource e'ode0 initiate data forwardin for the bearers specified in the L0earers "ubject to 8ata 7orwardin5istL. The data forwardin may o directly i.e. to taret "G"' or alternatively o via the "ervin G? if sodecided by source MM2 andAor taret "G"' in the preparation phase.

*. The "ource e'ode0 will ive a command to the 2 to handover to the Taret ccess "ystem via the messae@O from 2=T/' 1ommand. This messae includes a transparent container includin radio aspect parameters

that the Taret 0"" has set=up in the preparation phase (/' part). This messae also includes the F&8 and &OB=& parameters received from the Taret "G"' (2P1 part).

pon the reception of the @O from 2=T/' 1ommand messae containin the @andover 1ommand messae-the 2 shall associate its bearer &8s to the respective P7&s based on the relation with the '"P& and shall

suspend the uplin# transmission of the user plane data.

3. Boid.

;. The 2 moves to the Taret G2/' AGb (*G) system and performs eecutes the handover accordin to the parameters provided in the messae delivered in step *. The procedure is the same as in step : in clause 9.3.*.*

in T" ;3.,*C J>K with the additional function of association of the received P7& and eistin 0earer &d related tothe particular '"P&.

9. fter accessin the cell usin access bursts and receivin timin advance information from the 0"" in step ;- the2 processes the '" container and then sends one F&8 response messae to the taret "G"' via taret 0"".

The 2 sends this messae immediately after receivin the Pac#et Physical &nformation messae containin thetimin advance orin the synchronised networ# case- immediately if the P" @andover ccess messae is not

reDuired to be sent.

pon sendin the F&8 /esponse messae- the 2 shall resume the user data transfer only for those '"P&s forwhich there are radio resources allocated in the taret cell. 7or '"P&s usin 551 8M- for which radio

resources were not allocated in the taret cell- the 2 may reDuest for radio resources usin the leacy

procedures.

&f the Taret "G"' indicated F&8 /eset (i.e. reset to default F&8 parameters) in the '" container included in

the @O from 2=T/' 1ommand messae- and to avoid collision cases the mobile station may avoid trierinF&8 neotiation for any 551 "P& used in 551 8M- but wait for the "G"' to do so (see step ,*). &n any case

the mobile station may avoid trierin F&8 neotiation for any 551 "P& used in 551 0M- but wait for the"G"' to do so (see step ,*a).

This step is the same as specified in clause 9.3.*.* in T" ;3.,*C J>K.

:. pon reception of the first correct /51AM1 bloc# (sent in normal burst format) from the 2 to the Taret

0""- the Taret 0"" informs the Taret "G"' by sendin the messae P" @andover 1omplete (&M"&- and

5ocal T55&- /eDuest for &nter /T @andover &nfo). The taret 0"" that supports inter=/T P" handover toT/' shall- when the &'T2/ /T @'8OB2/ &'7O was not included in the "ource 0"" to Taret 0""transparent container received in the P" @'8OB2/ /2E2"T messae as specified in T" ;>.+,> J;*K-

reDuest the &'T2/ /T @'8OB2/ &'7O from the taret "G"' by settin the $/eDuest for &nter /T@andover &nfo$ to $,$.

<. The Taret 0"" also relays the messae F&8 /esponse to the Taret "G"'. 'ote- the messae in step : and <may arrive in any order in the Taret "G"'.

>. Then the Taret "G"' #nows that the 2 has arrived to the taret side and Taret "G"' informs the "ource

MM2 by sendin the 7orward /elocation 1omplete 'otification (&"/ ctivated- "ervin G? chane) messae.

&f &"/ ctivated is indicated- the source MM2 shall maintain the 2$s contets and activate &"/- which is only possible when the "=G? is not chaned. The "ource MM2 will also ac#nowlede that information. timer in

source MM2 is started to supervise when resources in "ource e'ode0 and "ource "ervin G? (for "ervin G?relocation) shall be released.

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pon receipt of the 7orward /elocation 1omplete c#nowlede messae the taret "G"' starts a timer if thetaret "G"' allocated "=G? resources for indirect forwardin.

C. The Taret "G"' will now complete the @andover procedure by informin the "ervin G? (for "ervin G?relocation this will be the Taret "ervin G?) that the Taret "G"' is now responsible for all the 2P" 0earer

1ontet(s) the 2 has established. This is performed in the messae Modify 0earer /eDuest ("G"' Tunnel

2ndpoint &dentifier for 1ontrol Plane- '"P&(s)- "G"' ddress for 1ontrol Plane- "G"' ddress(es) andT2&8(s) for ser Traffic for the accepted 2P" bearers and /T type- &"/ ctivated) per P8' connection. &f theP8' G? reDuested 2$s location andAor ser 1"G information (determined from the 2 contet)- the "G"'

also includes the ser 5ocation &nformation &2 andAor ser 1"G &nformation &2 in this messae. &f the 2 TimeNone has chaned- the "G"' includes the 2 Time None &2 in this messae. &f "ervin G? is not relocated but

the "ervin 'etwor# has chaned or if the "G"' has not received any old "ervin 'etwor# information from

the old MM2- the "G"' includes the new "ervin 'etwor# &2 in this messae. &n networ# sharin scenarios

"ervin 'etwor# denotes the servin core networ#. &f indicated- &"/ ctivated indicates that &"/ is activated-which is only possible when the "=G? was not chaned. ?hen the Modify 0earer /eDuest does not indicate &"/

ctivated and "=G? is not chaned- the "=G? deletes any &"/ resources by sendin a 8elete 0earer /eDuest tothe other 1' node that has bearer resources on the "=G? reserved.

The "G"' releases the non=accepted 2P" 0earer contets by trierin the 2P" 0earer contet deactivation procedure. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85

pac#et and does not send a 8ownlin# 8ata 'otification to the "G"'.

'OT2 *H 8urin the 0earer 1ontet deactivation procedure if the non=accepted 2P" bearer to be deactivated is

default bearer- the P8' G? can delay the deletion of such 2P" bearer based on an implementation

dependent mechanism to avoid possible impact on the handover of the correspondin P8' connection tothe ?5' access networ#. ntil the P8' connection(s) are established via ?5' access networ#- P8'

G? will bloc# downlin# data for affected P8'(s).

,+. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) may inform the P8' G? thechane of- for eample- for "ervin G? relocation or the /T type- that e.. can be used for charin- by

sendin the messae Modify 0earer /eDuest per P8' connection. The "=G? also includes ser 5ocation&nformation &2 andAor 2 Time None &2 andAor ser 1"G &nformation &2 if they are present in step C. "ervin

'etwor# should be included if it is received in step C or in step ; in clause 9.9.*.3.*. 7or "ervin G? relocation-

the "ervin G? allocates 85 T2&8s on "9A"> even for non=accepted bearers and may include the P8'1harin Pause "upported &ndication. The P8' G? must ac#nowlede the reDuest with the messae Modify0earer /esponse. &n the case of "ervin G? relocation- the P8' G? updates its contet field and returns a

Modify 0earer /esponse (1harin &d- M"&"8'- P8' 1harin Pause 2nabled &ndication (if P8' G? haschosen to enable the function)- etc.) messae to the "ervin G?. The M"&"8' is included if the P8' G? has it

stored in its 2 contet.


&f the "ervin G? is relocated- the P8' G? shall send one or more Lend mar#erL pac#ets on the old pathimmediately after switchin the path. The source "ervin G? shall forward the Lend mar#erL pac#ets to the

source e'ode0.

,,. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) ac#nowledes the user planeswitch to the Taret "G"' via the messae Modify 0earer /esponse (1ause- "ervin G? Tunnel 2ndpoint&dentifier for 1ontrol Plane- "ervin G? ddress for 1ontrol Plane- Protocol 1onfiuration Options). t this

stae the user plane path is established for all 2P" 0earer contets between the 2- Taret 0""- Taret "G"'-"ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) and P8' G?.

&f the "ervin G? does not chane- the "ervin G? shall send one or more Lend mar#erL pac#ets on the old path immediately after switchin the path.

,*. &f the Taret "G"' indicated F&8 /eset (i.e. reset to default F&8 parameters) in the '" container included inthe @O from 2=T/' 1ommand messae- then on receipt of the P" @andover 1omplete the Taret "G"'

initiates an 551A"'81P F&8 neotiation for each 551 "P& used in 551 8M. &n this case if the Taret"G"' wants to use the default F&8 parameters- it shall send an empty F&8 1ommand. &f the Taret "G"'

indicated $/eset to the old F&8 parameters$ in the '" container- no further F&8 neotiation is reDuired for 551"P&s used in 551 8M only.

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3GPP TS &3'% *%&'3' (&%3$%&)&+Release %&

8/13/2019 23401-c30


8/13/2019 23401-c30


UE S"urcee*"#eC Target CSS S"urce MME Target SGS* Ser5i'g GA 7SS



!. PS 7a'#"5er ReDuest

. PS 7a'#"5er ReDuest *acB

<. "rar# Re$"cati"' Res%"'se

P* GA




Target Ser5i'g GA




S"urce

0i1ure +'+'&'3'$%2 $!TRA" to GRA" AG4 7nter RAT reject

,. "teps , to 9 in the flow are identical to the ones in clause 9.9.*.3.*.

:. &f the Taret 0"" fails to allocate any resources for any of the reDuested P71s it sends a P" @andover /eDuest

'ac# (1ause) messae to the Taret "G"'. ?hen the Taret "G"' receives the P" @andover /eDuest 'ac#messae from Taret 0"" the Taret "G"' clears any reserved resources for this 2.

<. This step is only performed for "ervin G? relocation- i.e. if "teps ;A;a have been performed. The Taret "G"'

deletes the 2P" bearer resources by sendin 8elete "ession /eDuest (1ause) messaes to the Taret "ervin


>. The Taret "G"' sends the 7orward /elocation /esponse (1ause) messae to the "ource MM2.

C. ?hen the "ource MM2 receives the 7orward /elocation /esponse messae it send a @andover Preparation7ailure (1ause) messae to the "ource e'ode0.

!.!.2.4 GER&* &G 6"#e t" E-UTR&* :'ter R&T ha'#"5er

!.!.2.4.1 Ge'era$

The procedure is based on Pac#et=switched handover for G2/' AGb mode- defined in T" ;3.,*C J>K.

Pre=conditionsH

= The 2 is in /28 state (G2/' AGb mode)I

= The 2 has at least one P8PA2P" 0earer 1ontet establishedI

= The 0"" must support P7M- Pac#et 7low Manaement- procedures.

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UE S"urce CSS

Target e*"#eC

S"urce SGS*

Target MME Ser5i'g GA 7SS


2. PS 7a'#"5er ReDuire# 3. "rar# Re$"cati"' ReDuest

!. 7a'#"5er ReDuest

!a. ha'#"5er ReDuest &cB'"$e#ge



P* GA





Target Ser5i'g GA



S"urce

0i1ure +'+'&''&$%2 GRA" AG4 mode to $!TRA" inter RAT 5 preparation phase

,. The source access system- "ource 0""- decides to initiate an &nter=/T @andover to the 2=T/'. t this

point both uplin# and downlin# user data is transmitted via the followinH 0earers between 2 and "ource 0""-0""GP P71 tunnel(s) between source 0"" and source "G"'- GTP tunnel(s) between "ource "G"'- "ervin

G? and P8' G?.


*. The source 0"" sends the messae P" handover /eDuired (T55&- 1ause- "ource 1ell &dentifier- Taret e'ode0&dentifier- "ource 0"" to Taret /'1 Transparent 1ontainer and active P71s list) to "ource "G"' to reDuest

the 1' to establish resources in the Taret e'ode0- Taret MM2 and the "ervin G?.

3. The "ource "G"' determines from the $Taret e'ode0 &dentifier$ &2 that the type of handover is &/T P"

@andover to 2=T/'. The "ource "G"' initiates the @andover resource allocation procedure by sendinmessae 7orward /elocation /eDuest (&M"&- Taret &dentification- MM 1ontet- P8' 1onnections- "G"'

Tunnel 2ndpoint &dentifier for 1ontrol Plane- "G"' ddress for 1ontrol plane- "ource to Taret Transparent1ontainer- /' 1ause- Pac#et 7low &8- "'81P F&8 parameters- 551 F&8 parameters- M" &nfo 1hane

/eportin ction (if available)- 1"G &nformation /eportin ction (if available)- 2 Time None- &"/"upported- "ervin 'etwor#) to the taret MM2. ?hen &"/ is activated the messae should be sent to the MM2

that maintains &"/ for the 2 when this MM2 is servin the taret identified by the Taret &dentification. &findicated- the information &"/ "upported indicates that the source "G"' and associated "ervin G? are capable

to activate &"/ for the 2. This messae includes all P8' 1onnections active in the source system and for eachP8' 1onnection includes the associated P'- the address and the uplin# tunnel endpoint parameters of the

"ervin G? for control plane- and a list of 2P" 0earer 1ontets established in the source system. The 2P"0earer 1ontets indicate the P7&s and the F&8 parameters related to those 2P" 0earer 1ontets- and the uplin#

Tunnel endpoint parameters of the "ervin G?. The old "ervin 'etwor# is sent to taret MM2 to support thetaret MM2 to resolve if "ervin 'etwor# is chaned. &n networ# sharin scenarios "ervin 'etwor# denotes

the servin core networ#.

The /' 1ause includes the value from the 1ause &2 received from the source 0"". "ource to Taret

Transparent 1ontainer includes the value from the "ource 0"" to Taret /'1 Transparent 1ontainer receivedfrom the source 0"".

Prioriti!ation of 2P" 0earer 1ontets is performed by the taret core networ# node.

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The MM2 establishes the 2P" bearer(s) in the prioriti!ed order. The MM2 deactivates- as provided in step > ofthe eecution phase- the 2P" bearers which cannot be established.

The MM contet contains security related information- e.. supported cipherin alorithms as described inT" *C.*<; J;3K. @andlin of security #eys is described in T" 33.;+, J;,K.

7or the 2P" 0earer 1ontet with traffic class eDuals $0ac#round$- the source "G"' shall indicate via the

ctivity "tatus &ndicator &2 that radio bearers shall be established on the taret side.

The taret MM2 shall determine the Maimum P' restriction based on the P' /estriction of each bearercontet received in the 7orward /elocation /eDuest- and shall subseDuently store the new Maimum P'

restriction value.

;. The taret MM2 determines if the "ervin G? is to be relocated- e.. due to P5M' chane. &f the "ervin G?

is to be relocated- the taret MM2 selects the taret "ervin G? as described under clause ;.3.>.* on L"ervinG? selection functionL. The taret MM2 sends a 1reate "ession /eDuest messae (&M"&- MM2 Tunnel

2ndpoint &dentifier for 1ontrol Plane- MM2 ddress for 1ontrol plane- P8' G? address(es) for user plane-P8' G? 5 T2&8(s) for user plane- P8' G? address for control plane- and P8' G? T2&8(s) for control

plane- the Protocol Type over "9A">- "ervin 'etwor#) per P8' connection to the taret "ervin G?. TheProtocol Type over "9A"> is provided to "ervin G? which protocol should be used over "9A"> interface.

;a. The taret "ervin G? allocates its local resources and returns them in a 1reate "ession /esponse ("ervin G?address(es) for user plane- "ervin G? 5 T2&8(s) for user plane- "ervin G? ddress for control plane-

"ervin G? T2&8 for control plane) messae to the taret MM2.

9. The Taret MM2 will reDuest the Taret e'ode0 to establish the 0earer(s) by sendin the messae @andover

/eDuest (2 &dentifier- ",P 1ause- &nterity protection information (i.e. &% and allowed &nterity Protectionalorithms)- 2ncryption information (i.e. 1% and allowed 1ipherin alorithms)- 2P" 0earers to be setup list-

"ource to Taret Transparent 1ontainer- @andover /estriction 5ist). The Taret MM2 inores any ctivity"tatus &ndicator within an 2P" 0earer 1ontet and reDuests the e'ode0 to allocate resources for all 2P" 0earer

1ontets received from the source side. The ",P 1ause includes the value from the /' 1ause &2 receivedfrom the source "G"'. The taret e'ode0 shall inore it if the number of radio bearers in the "ource to Taret

Transparent container does not comply with the number of bearers reDuested by the MM2 and allocate bearers as

reDuested by the MM2. @andover /estriction 5ist is sent if it is available in the Taret MM2I it is described inclause ;.3.9.<.

7or each 2P" bearer reDuested to be established- $2P" 0earers To 0e "etup$ &2 shall contain information such as

&8- bearer parameters- Transport 5ayer ddress- L8ata forwardin not possibleL indication- and ", Transportssociation. The Transport 5ayer ddress is the "ervin G? ddress for user data- and the ", Transport

ssociation corresponds to the uplin# Tunnel 2ndpoint &dentifier 8ata. L8ata forwardin not possibleLindication shall be included if the taret MM2 decides the correspondin bearer will not be subject to data

forwardin.

The cipherin and interity protection #eys will be sent transparently from the taret e'ode0 to the 2 in the

Taret to "ource Transparent 1ontainer- and in the messae P" @andover 1ommand from source 0"" to the 2.This will then allow data transfer to continue in the new /TAmode taret cell without reDuirin a new %

(uthentication and %ey reement) procedure. More details are described in T" 33.;+, J;,K.

9a. The Taret e'ode0 allocates the reDuest resources and returns the applicable parameters to the Taret MM2 in

the messae @andover /eDuest c#nowlede (Taret to "ource Transparent 1ontainer- ",P 1ause- 2P"0earers setup list- 2P" 0earers failed to setup list). pon sendin the @andover /eDuest c#nowlede messae

the taret e'ode0 shall be prepared to receive downlin# GTP P8s from the "ervin G? for the accepted 2P" bearers.

:. &f $&ndirect 7orwardin$ and relocation of "ervin G? apply- the taret MM2 sends a 1reate &ndirect 8ata7orwardin Tunnel /eDuest messae (Taret e'ode0 ddress(es) and T2&8(s) for 85 data forwardin) to the

"ervin G?.



:a. The "ervin G? returns a 1reate &ndirect 8ata 7orwardin Tunnel /esponse (1ause- "ervin G? ddress(es)

and 85 T2&8(s) for data forwardin) messae to the taret MM2.

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<. The Taret MM2 sends the messae 7orward /elocation /esponse (1ause- 5ist of "et p P71s- MM2 Tunnel2ndpoint &dentifier for 1ontrol Plane- /' 1ause- MM2 ddress for control plane- Taret to "ource

Transparent 1ontainer- ddress(es) and T2&8(s) for 8ata 7orwardin- "ervin G? chane indication) to the"ource "G"'. "ervin G? chane indication indicates whether a new "ervin G? has been selected. The /'

1ause includes the value from the ",P 1ause &2 received from the taret e'ode0. The Taret to "ourceTransparent 1ontainer includes the value from the Taret to "ource Transparent 1ontainer received from the

taret e'ode0.

&f $8irect 7orwardin$ applies or if $&ndirect 7orwardin$ but no relocation of "ervin G? applies- then the &2s

$ddress(es) and T2&8(s) for 8ata 7orwardin$ contain the 85 GTP= tunnel endpoint parameters to thee'ode0 received in step 9a. &f $&ndirect 7orwardin$ and relocation of "ervin G? apply the &2s $ddress(es)

and T2&8(s) for 8ata 7orwardin$ contain the 85 GTP= tunnel endpoint parameters to the "ervin G?

received in step :a.

>. &f $&ndirect 7orwardin$ applies- the source "G"' shall send the messae 1reate &ndirect 8ata 7orwardinTunnel /eDuest (ddress(es) and T2&8(s) for 8ata 7orwardin (received in step <)) to the "ervin G? used for

indirect pac#et forwardin.



>a. The "ervin G? returns the forwardin user plane parameters by sendin the messae 1reate &ndirect 8ata7orwardin Tunnel /esponse (1ause- "ervin G? ddress(es) and T2&8(s) for 8ata 7orwardin). &f the

"ervin G? doesn$t support data forwardin- an appropriate cause value shall be returned and the "ervin G?

ddress(es) and T2&8(s) will not be included in the messae.

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UE

S"urce CSS

Target e*"#eC S"urce SGS* Target MME

Ser5i'g GA 7SS

P* GA


1. PS 78 ReDuire# &cB'"$e#ge

2. PS 7a'#"5er +"66a'#



!. 78 t" E-UTR&* +"6%$ete

. 7a'#"5er *"ti;



11. CSS PacBet $" e$ete Pr"ce#ure


8'$; i 9irect "rar#i'g9 a%%$ies

Target Ser5i'g GA

"r Ser5i'g GA re$"cati"' Ste%s <, a'# 10, a'#the "$$"i'g User P$a'e %ath, i$$ e ha'#$e# ;Target Ser5i'g GA

< . M"#i; Cearer ReDuest


(A)


a. M"#i; Cearer Res%"'se




8'$; i 9:'#irect "rar#i'g9 a%%$ies

1!. e$ete :'#irect ata "rar#i'g Tu''e$ ReDuest

1!a. e$ete :'#irect ata "rar#i'g Tu''e$ Res%"'se

S"urce



0i1ure +'+'&''3$%2 GRA" AG4 mode to $!TRA" 7nter RAT 5 eFecution phase

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps C and Ca concern GTP based "9A">.

The source "G"' continues to receive downlin# and uplin# user plane P8s.

?hen source "G"' receives the 7orward /elocation /esponse messae it may start downlin# '=P8 relay and

duplication to the taret e'ode0 (for 8irect 7orwardin) or via the "ervin G? (for &ndirect 7orwardin)- and thetaret e'ode0 may start blind transmission of downlin# user data towards the 2 over the allocated radio channels.

,. The "ource "G"' completes the preparation phase towards "ource 0"" by sendin the messae P" @O/eDuired c#nowlede (T55&- 5ist of "et p P71s- Taret /'1 to "ource 0"" Transparent 1ontainer- 1ause).

This messae includes all P7&s that could be established on the Taret side. The 1ause includes the value from

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the /' 1ause &2 received from the taret MM2. The Taret /'1 to "ource 0"" Transparent 1ontainerincludes the value from the Taret to "ource Transparent 1ontainer received from the taret MM2.

0efore sendin the P" @andover /eDuired c#nowlede messae- the source "G"' may suspend downlin# datatransfer for any 2P" 0earer contets.

0efore sendin the P" @andover 1ommand messae to the 2 the source 0""- may try to empty the downlin#

0"" buffer for any 0"" P71s.

*. The "ource 0"" will command the 2 to handover to the taret e'ode0 via the messae P" @andover1ommand. The access system specific messae to 2 includes a transparent container includin radio aspect

parameters that the Taret e'ode0 has set=up in the preparation phase.

3. Boid.

;. The 2 moves to the 2=T/' and performs access procedures toward Taret e'ode0.

9. ?hen the 2 has ot access to Taret e'ode0 it sends the messae @O to 2=T/' 1omplete.

The 2 shall implicitly derive the 2P" bearers for which an 2=/0 was not established from the P" @andover1ommand and deactivate them locally without an eplicit '" messae at this step.

:. ?hen the 2 has successfully accessed the Taret e'ode0- the Taret e'ode0 informs the Taret MM2 bysendin the messae @andover 'otify (T&S21G&).

<. Then the Taret MM2 #nows that the 2 has arrived to the taret side and Taret MM2 informs the "ource"G"' by sendin the 7orward /elocation 1omplete 'otification (&"/ ctivated- "ervin G? chane) messae.

&f indicated- &"/ ctivated indicates to the source "G"' that it shall maintain the 2$s contets and activate&"/- which is only possible when the "=G? is not chaned. The "ource "G"' shall also ac#nowlede that

information. ?hen the 7orward /elocation 1omplete 'otification messae has been received and there is no

loner any need for the "G"' to forward data- the "G"' stops data forwardin. timer in source "G"' is

started to supervise when resources in the "ource "ervin G? (for "ervin G? relocation) shall be released.

pon receipt of the 7orward /elocation 1omplete c#nowlede messae the taret MM2 starts a timer if the

taret MM2 applies indirect forwardin.

>. The Taret MM2 will now complete the @andover procedure by informin the "ervin G? (for "ervin G?

relocation this will be the Taret "ervin G?) that the Taret MM2 is now responsible for all the 2P" bearersthe 2 have established. This is performed in the messae Modify 0earer /eDuest (1ause- MM2 Tunnel

2ndpoint &dentifier for 1ontrol Plane- 2P" 0earer &8(s)- MM2 ddress for 1ontrol Plane- e'ode0 ddress(es)and T2&8(s) for ser Traffic for the accepted 2P" bearers and /T type- &"/ ctivated) per P8' connection.

&f the P8' G? reDuested 2$s location andAor ser 1"G information (determined from the 2 contet)- the

MM2 also includes the ser 5ocation &nformation &2 andAor ser 1"G &nformation &2 in this messae. &f the2 Time None has chaned- the MM2 includes the 2 Time None &2 in this messae. &f the "ervin G? is not

relocated but the "ervin 'etwor# has chaned or if the MM2 has not received any old "ervin 'etwor#

information from the old "G"'- the MM2 includes the new "ervin 'etwor# &2 in this messae. &f indicated-&"/ ctivated indicates that &"/ is activated- which is only possible when the "=G? was not chaned. ?hen the

Modify 0earer /eDuest does not indicate &"/ ctivated and "=G? is not chaned- the "=G? deletes any &"/

resources by sendin a 8elete 0earer /eDuest to the other 1' node that has bearer resources on the "=G?reserved.

The MM2 releases the non=accepted dedicated bearers by trierin the bearer release procedure as specified in

clause 9.;.;.*. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85 pac#et and does not send a 8ownlin# 8ata 'otification to the MM2.

&f the default bearer of a P8' connection has not been accepted by the taret e'ode0 and there are other P8'

connections active- the MM2 shall handle it in the same way as if all bearers of a P8' connection have not beenaccepted. The MM2 releases these P8' connections by trierin the MM2 reDuested P8' disconnection

procedure specified in clause 9.,+.3.

'OT2 *H 8urin the MM2 reDuested P8' disconnection procedure- the P8' G? can delay the deletion of theP8' connection based on an implementation dependent mechanism to avoid possible impact on the

handover of the correspondin P8' connection to the ?5' access networ#. ntil the P8'connection(s) are established via ?5' access networ#- P8' G? will bloc# downlin# data for affected

P8'(s).

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C. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) informs the P8' G?(s) thechane of- for eample- for "ervin G? relocation or the /T type- that e.. can be used for charin- by

sendin the messae Modify 0earer /eDuest per P8' connection. The "=G? also includes ser 5ocation&nformation &2 andAor 2 Time None &2 andAor ser 1"G &nformation &2 if they are present in step >. "ervin

'etwor# should be included if it is received in step > or in step ; in clause 9.9.*.;.*. 7or "ervin G? relocation-the "ervin G? allocates 85 T2&8s on "9A"> even for non=accepted bearers and P8' 1harin Pause "upport

&ndication shall be included. The P8' G? must ac#nowlede the reDuest with the messae Modify 0earer/esponse (1harin &d- M"&"8'- P8' 1harin Pause 2nabled &ndication (if P8' G? has chosen to enable

the function)- etc.) to the "ervin G?.


&f the "ervin G? is relocated- the P8' G? shall send one or more Lend mar#erL pac#ets on the old pathimmediately after switchin the path in order to assist the reorderin function in the taret e'ode0. The source

"ervin G? shall forward the Lend mar#erL pac#ets to the source "G"'.

,+. The "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?) ac#nowledes the user plane

switch to the Taret MM2 via the messae Modify 0earer /esponse (1ause- "ervin G? Tunnel 2ndpoint&dentifier for 1ontrol Plane- "ervin G? (for "ervin G? relocation this will be the Taret "ervin G?)

ddress for 1ontrol Plane- Protocol 1onfiuration Options). t this stae the user plane path is established for

all bearers between the 2- Taret e'ode0- "ervin G? (for "ervin G? relocation this will be the Taret"ervin G?) and P8' G?.

&f the "ervin G? does not chane- the "ervin G? shall send one or more Lend mar#erL pac#ets on the old

path immediately after switchin the path in order to assist the reorderin function in the taret e'ode0.

,,. ?hen the timer at the source "G"' started in step < epires the "ource "G"' will clean=up all its resources

towards "ource 0"" by performin the 0"" Pac#et 7low 8elete procedure.

,*. The 2 initiates a Trac#in rea pdate procedure when one of the conditions listed in clause LTriers for


The taret MM2 #nows that an &/T @andover has been performed for this 2 as it received the bearercontet(s) by handover messaes and therefore the taret MM2 performs only a subset of the T update

procedure- specifically it ecludes the contet transfer procedures between source "G"' and taret MM2.

,3. ?hen the timer at the source "G"' started in step < epires and if the source "G"' received the "ervin G?chane indication in the 7orward /elocation /esponse messae- it deletes the 2P" bearer resources by sendin

8elete "ession /eDuest (1ause- Operation &ndication) messaes to the "ource "ervin G?. The operation&ndication fla is not set- that indicates to the "ource "ervin G? that the "ource "ervin G? shall not initiate a

delete procedure towards the P8' G?. The "ource "ervin G? ac#nowledes with 8elete "ession /esponse(1ause) messaes. &f &"/ has been activated before this procedure- the cause indicates to the "ource "=G? that

the "ource "=G? shall delete the bearer resources on the other old 1' node by sendin 8elete 0earer /eDuestmessae(s) to that 1' node.

,;. &f indirect forwardin was used then the epiry of the timer at source "G"' started at step < triers the source

"G"' to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to the "=G? to release the temporary


,9. &f indirect forwardin was used and the "ervin G? is relocated- then the epiry of the timer at taret MM2

started at step : triers the taret MM2 to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae tothe taret "=G? to release temporary resources used for indirect forwardin.

!.!.2.4.4 GER&* &G 6"#e t" E-UTR&* :'ter R&T ha'#"5er reIect

The Taret e'ode0 may reject the use of the @andover procedure if none of the reDuested 2P" bearers in the @andover

/eDuest messae could be established. &n this case no 2 contet is established in the taret MM2Ae'ode0 and noresources are allocated. The 2 remains in the "ource 0""A"G"'.

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:. The taret 2P1 node ac#nowlede the release of all resources on the taret side by returnin a /elocation 1ancel/esponse (1ause) messae to the source 2P1 node.

<. The source 2P1 node returns a 1ancel ac#nowlede messae to the source /'. &f the source /' isH

a) 0"" there will be no ac#nowlede messae sent to the source 0""-

b) /'1 the messae sent is /elocation 1ancel c#nowlede (1ause)- or

c) e'ode0 the messae sent is @andover 1ancel c#nowlede (1ause).

>. &f indirect forwardin tunnel is setup durin handover preparation then cancellation of handover triers thesource MM2A"G"' to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messae to the "=G? to release

the temporary resources used for indirect forwardin.

C. &f indirect forwardin tunnel is setup durin handover preparation and servin G? is relocated then cancellation

of handover triers the taret MM2A"G"' to send a 8elete &ndirect 8ata 7orwardin Tunnel /eDuest messaeto the "=G? to release the temporary resources used for indirect forwardin.

!. *et"rB &ssiste# +e$$ +ha'ge 'etwor# ssisted 1ell 1hane ('11) is a means that enables better performance for pac#et data services upon inter=

cell chane for those networ#s that do not support P" @andover. &t reduces the service interruption time for 2s inactive mode upon cell chane by providin in the source cell- prior to the cell chane- system information of a taret

cell allowin pac#et access.

?ithin the scope of this specification- '11 is applicable for inter=/T cell chanes from a source 2=T/' cell

towards a taret G2/' cell.

?hen the 2 chanes from a source 2=T/' cell towards a taret G2/' cell- the 2 locally deactivates &"/ by

settin its T&' from L/T=related TM"&L to LGT&L- if any 2P" bearer contet activated after the &"/ was activated in

the 2 eists.

?hen the 2 chanes from a source 2=T/' cell in connected mode towards a taret G2/' cell from the same/ via 1ell 1hane Order that is not for 1" fallbac# and the &"/ is active- the 2 locally deactivates &"/ by settin its

T&' from L/T=related TM"&L to LGT&L.

!..1 &rchitecture Pri'ci%$es "r E-UTR&* t" GER&* *&++

&ntroducin '11 from 2=T/' to G2/' follows the principles of the 'etwor# ssisted 1ell 1hane between

T/' and G2/' as described in T" *9.;,3 J**K and T" *3.+:+ J<K. &t specifies the /' &nformation Manaement(/&M) procedures as specified in clause 9.,9 and depicted in fiure 9.:=,.

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0i1ure +',$%2 $!TRA" to GRA" "A99 4asic net#ork architecture

The support for the '11 from 2=T/' to G2/' has the followin impacts on 2=T/' A G2/' architectureH

= ffected nodesH 0"1- e'ode0- MM2- "G"'I

= ffected networ# interfacesH Gb- &u- "3- Gn- ",I

= ffected radio interfacesH m and u.

!..2 V"i#

!. :'"r6ati"' st"rage

This clause describes information storae structures reDuired for the 2P" when 3GPP access only is deployed.

&nformation storae for the case where non 3GPP accesses are deployed is in T" *3.;+* J*K.

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!..1 7SS

&M"& is the prime #ey to the data stored in the @"". The data held in the @"" is defined in Table 9.<.,=, here below.

The table below is applicable to 2=T/' in stand=alone operation only.

Ta4le +'-'%$%2 SS data

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0ield =escription

:MS: :MS: is the 6ai' reere'ce Be;.

MS:S* The asic MS:S* " the UE (Prese'ce " MS:S* is "%ti"'a$).

:ME: :ME:SV :'ter'ati"'a$ M"i$e EDui%6e't :#e'tit; - S"tare Versi"' *u6er

MME :#e'tit; The :#e'tit; " the MME curre't$; ser5i'g this UE.MME +a%ai$ities :'#icates the ca%ai$ities " the MME ith res%ect t" c"re u'cti"'a$it; e.g.

regi"'a$ access restricti"'s.

MS PS Purge# r"6 EPS :'#icates that the EMM a'# ESM c"'te/ts " the UE are #e$ete# r"6 the MME.

8C %ara6eters :'#icates that the status " the "%erat"r #eter6i'e# arri'g

&ccess Restricti"' :'#icates the access restricti"' suscri%ti"' i'"r6ati"'.

EPS Suscrie# +hargi'g+haracteristics

The chargi'g characteristics "r the UE, e.g. '"r6a$, %re%ai#, $at-rate, a'#"r h"ti$$i'g suscri%ti"'.

Trace Reere'ce :#e'tiies a rec"r# "r a c"$$ecti"' " rec"r#s "r a %articu$ar trace.

Trace T;%e :'#icates the t;%e " trace, e.g. 7SS trace, a'#"r MME Ser5i'g GA P* GAtrace.

8M+ :#e'tit; :#e'tiies the 8M+ that sha$$ recei5e the trace rec"r#(s).

Suscrie#-UE-&MCR The Ma/i6u6 &ggregate# u%$i'B a'# #"'$i'B MCRs t" e share# acr"ss a$$*"'-GCR earers acc"r#i'g t" the suscri%ti"' " the user.

&P*-8: Re%$ace6e't :'#icates the #"6ai' 'a6e t" re%$ace the &P* 8: he' c"'structi'g the P*GA * u%"' hich t" %er"r6 a *S res"$uti"'. This re%$ace6e't a%%$ies"r a$$ the &P*s i' the suscrier9s %r"i$e. See TS 23.003 JK c$ause .1.2 "r6"re i'"r6ati"' "' the "r6at " #"6ai' 'a6es that are a$$"e# i' this ie$#.

RSP :'#e/ &' i'#e/ t" s%eciic RRM c"'igurati"' i' the E-UTR&*

URRP-MME UE Reachai$it; ReDuest Para6eter i'#icati'g that UE acti5it; '"tiicati"' r"6MME has ee' reDueste# ; the 7SS.

+SG Suscri%ti"' ata The +SG Suscri%ti"' ata is a $ist " +SG :s %er PLM* a'# "r each +SG :"%ti"'a$$; a' ass"ciate# e/%irati"' #ate hich i'#icates the %"i't i' ti6e he'the suscri%ti"' t" the +SG : e/%iresN a' ase't e/%irati"' #ate i'#icatesu'$i6ite# suscri%ti"'."r a +SG : that ca' e use# t" access s%eciic P*s 5ia L"ca$ :P &ccess, the+SG : e'tr; i'c$u#es the c"rres%"'#i'g &P*(s).

VPLM* L:P& &$$"e# S%eciies %er PLM* hether the UE is a$$"e# t" use L:P&.

EPLM* $ist :'#icates the EDui5a$e't PLM* $ist "r the UE9s registere# PLM*.

Suscrie# Peri"#ic R&UT&UTi6er

:'#icates a suscrie# Peri"#ic R&UT&U Ti6er 5a$ue

MPS +S %ri"rit; :'#icates that the UE is suscrie# t" the eMLPP "r 1/ RTT %ri"rit; ser5ice i'the +S #"6ai'.

UE-SRV++- +a%ai$it; :'#icates hether the UE is UTR&*GER&* SRV++ ca%a$e "r '"t.

MPS EPS %ri"rit; :'#icates that the UE is suscrie# t" MPS i' the EPS #"6ai'.

Each suscri%ti"' %r"i$e c"'tai's "'e "r 6"re P* suscri%ti"' c"'te/ts

+"'te/t :#e'tiier :'#e/ " the P* suscri%ti"' c"'te/t.

P* &##ress :'#icates suscrie# :P a##ress(es).

P* T;%e :'#icates the suscrie# P* T;%e (:P54, :P5, :P545)

&P*-8: Re%$ace6e't &P* $e5e$ &P*-8: Re%$ace6e't hich has sa6e r"$e as UE $e5e$ &P*-8:Re%$ace6e't ut ith higher %ri"rit; tha' UE $e5e$ &P*-8: Re%$ace6e't. This isa' "%ti"'a$ %ara6eter. Ahe' a5ai$a$e, it sha$$ e use# t" c"'struct the P* GA* i'stea# " UE $e5e$ &P*-8: Re%$ace6e't.

&ccess P"i't *a6e (&P*) & $ae$ acc"r#i'g t" *S 'a6i'g c"'5e'ti"'s #escrii'g the access %"i't t" the%acBet #ata 'et"rB ("r a i$#car#) (*8TE ).

S:PT8 %er6issi"'s :'#icates hether the traic ass"ciate# ith this &P* is %r"hiite# "r S:PT8,a$$"e# "r S:PT8 e/c$u#i'g S:PT8 at the $"ca$ 'et"rB, a$$"e# "r S:PT8i'c$u#i'g S:PT8 at the $"ca$ 'et"rB "r a$$"e# "r S:PT8 at the $"ca$ 'et"rB"'$; (*8TE ).

L:P& %er6issi"'s :'#icates hether the P* ca' e accesse# 5ia L"ca$ :P &ccess. P"ssi$e5a$ues are L:P&-%r"hiite#, L:P&-"'$; a'# L:P&-c"'#iti"'a$.

EPS suscrie# "S %r"i$e The earer $e5e$ "S %ara6eter 5a$ues "r that &P*9s #eau$t earer (+: a'# &RP) (see c$ause 4..3).

Suscrie#-&P*-&MCR The 6a/i6u6 aggregate# u%$i'B a'# #"'$i'B MCRs t" e share# acr"ss a$$*"'-GCR earers, hich are esta$ishe# "r this &P*.

EPS P* Suscrie# +hargi'g+haracteristics

The chargi'g characteristics " this P* Suscrie# c"'te/t "r the UE, e.g.'"r6a$, %re%ai#, $at-rate, a'#"r h"t i$$i'g suscri%ti"'. The chargi'gcharacteristics is ass"ciate# ith this &P*.

VPLM* &##ress &$$"e# S%eciies %er VPLM* hether "r this &P* the UE is a$$"e# t" use the P*GA i' the #"6ai' " the 7PLM* "'$;, "r a##iti"'a$$; the P* GA i' the #"6ai'" the VPLM*.

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0ield =escription

P* GA i#e'tit; The i#e'tit; " the P* GA use# "r this &P*. The P* GA i#e'tit; 6a; eeither a' * "r a' :P a##ress. The P* GA i#e'tit; reers t" a s%eciic P*GA.

P* GA &$$"cati"' T;%e :'#icates hether the P* GA is statica$$; a$$"cate# "r #;'a6ica$$; se$ecte# ;"ther '"#es. & statica$$; a$$"cate# P* GA is '"t cha'ge# #uri'g P* GAse$ecti"'.

PLM* " P* GA :#e'tiies the PLM* i' hich the #;'a6ica$$; se$ecte# P* GA is $"cate#.7"6"ge'"us Su%%"rt " :MS V"ice"5er PS Sessi"'s "r MME

:'#icates %er UE a'# MME i @:MS V"ice "5er PS Sessi"'s@ is h"6"ge'e"us$;su%%"rte# i' a$$ T&s i' the ser5i'g MME "r h"6"ge'e"us$; '"t su%%"rte#, "r,su%%"rt is '"'-h"6"ge'e"usu'B'"', see c$ause 4.3.!.<&.

List " &P* - P* GA : re$ati"'s ("r P* suscri%ti"' c"'te/t ith i$#car# &P*)

&P* - P-GA re$ati"' ' The &P* a'# the i#e'tit; " the #;'a6ica$$; a$$"cate# P* GA " a P*c"''ecti"' that is auth"rise# ; the P* suscri%ti"' c"'te/t ith the i$#car# &P*. The P* GA i#e'tit; 6a; e either a' * "r a' :P a##ress. TheP* GA i#e'tit; reers t" a s%eciic P* GA.

'OT2 ,H &M2& and "B' are stored in @"" when the utomatic 8evice 8etection feature is supported- see clause

,9.9 of T" *3.+:+ J<K.

'OT2 *H The $2P" subscribed Eo" profile$ stored in @"" is complementary to the leacy $GP/" subscribed Eo"

profile$.

'OT2 3H Boid.

'OT2 ;H @ow to indicate which of the P8' subscription contets stored in the @"" is the default one for the 2 isdefined in stae 3.

'OT2 9H To help with the selection of a co=located or topoloically appropriate P8' G? and "ervin G?- theP8' G? identity shall be in the form of an 7E8'.

'OT2 :H The Lccess Point 'ame (P')L field in the table above contains the P'='& part of the P'.

'OT2 <H &n this specification- the values Lprohibited for "&PTOL and L allowed for "&PTO ecludin "&PTO at the

local networ#L correspond to the pre /el=,* values Lprohibited for "&PTOL and Lallowed for "&PTOL.ctual codin of these values belons to "tae 3 domain.

n epired 1"G subscription should not be removed from the @"" subscription data before it is removed from the 2$s

llowed 1"G list or Operator 1"G list. ?hen a 1"G subscription is cancelled it should be handled as an epired

subscription in @"" subscription data to allow for removin it from 2$s llowed 1"G list or Operator 1"G list first.

One (and only one) of the P8' subscription contets stored in the @"" may contain a wild card P' (see

T" *3.++3 JCK) in the ccess Point 'ame field.

The P8' subscription contet mar#ed as the default one shall not contain a wild card P'.

The P8' subscription contet with a wildcard P' shall not contain a statically allocated P8' G?.

&f the 5&P permission and "&PTO permission flas are both included for a particular P'- they shall be set in a

consistent manner- e.- if the 5&P permission is set to 5&P=only or 5&P=conditional- the "&PTO permission shall beset to "&PTO=prohibited. 1onversely- if the "&PTO permission indicates the P' is a "&PTO=allowed P'- the 5&P

permission shall be set to 5&P=prohibited. "&PTO=allowed P' is an P' for which the "&PTO permission is set toallowed for "&PTO ecludin "&PTO at the local networ#- allowed for "&PTO includin "&PTO at the local networ# or

allowed for "&PTO at the local networ# only.

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!..2 MME

The MM2 maintains MM contet and 2P" bearer contet information for 2s in the 21M=&852- 21M=1O''21T28and 2MM=82/2G&"T2/28 states. Table 9.<.*=, shows the contet fields for one 2.

Ta4le +'-'&$%2 88 88 and PS 4earer 9onteFts

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0ield =escription

:MS: :MS: (:'ter'ati"'a$ M"i$e Suscrier :#e'tit;) is the suscriers %er6a'e'ti#e'tit;.

:MS:-u'authe'ticate#-i'#icat"r This is a' :MS: i'#icat"r t" sh" the :MS: is u'authe'ticate#.

MS:S* The asic MS:S* " the UE. The %rese'ce is #ictate# ; its st"rage i' the 7SS.

MM State M"i$it; 6a'age6e't state E+M-:LE, E+M-+8**E+TE, EMM-EREG:STERE.

GUT: G$"a$$; U'iDue Te6%"rar; :#e'tit;.ME :#e'tit; M"i$e EDui%6e't :#e'tit; Q (e.g. :ME::ME:SV) S"tare Versi"' *u6er

TracBi'g &rea List +urre't TracBi'g area $ist

T&: " $ast T&U T&: " the T& i' hich the $ast TracBi'g &rea U%#ate as i'itiate#.

E-UTR&* +e$$ G$"a$ :#e'tit; Last B'"' E-UTR&* ce$$

E-UTR&* +e$$ :#e'tit; &ge Ti6e e$a%se# si'ce the $ast E-UTR&* +e$$ G$"a$ :#e'tit; as acDuire#

+SG : Last B'"' +SG : he' the UE as acti5e

+SG 6e6ershi% Last B'"' +SG 6e6ershi% " the UE he' the UE as acti5e

&ccess 6"#e &ccess 6"#e " $ast B'"' E+G: he' the UE as acti5e

&uthe'ticati"' Vect"r Te6%"rar; authe'ticati"' a'# Be; agree6e't #ata that e'a$es a' MME t"e'gage i' && ith a %articu$ar user. &' EPS &uthe'ticati"' Vect"r c"'sists ""ur e$e6e'tsa) 'et"rB cha$$e'ge R&*,) a' e/%ecte# res%"'se ORES,

c) e; &SME,

#) a 'et"rB authe'ticati"' t"Be' &UT*.

UE Ra#i" &ccess +a%ai$it; UE ra#i" access ca%ai$ities.

MS +$ass6arB 2 GER&*UTR&* +S #"6ai' c"re 'et"rB c$ass6arB (use# i the MS su%%"rtsSRV++ t" GER&* "r UTR&*)

MS +$ass6arB 3 GER&* +S #"6ai' ra#i" 'et"rB c$ass6arB (use# i the MS su%%"rts SRV++ t"GER&*)

Su%%"rte# +"#ecs List " c"#ecs su%%"rte# i' the +S #"6ai' (use# i the MS su%%"rts SRV++ t"GER&* "r UTR&*)

UE *et"rB +a%ai$it; UE 'et"rB ca%ai$ities i'c$u#i'g securit; a$g"rith6s a'# Be; #eri5ati"' u'cti"'ssu%%"rte# ; the UE

MS *et"rB +a%ai$it; "r a GER&* a'#"r UTR&* ca%a$e UE, this c"'tai's i'"r6ati"' 'ee#e# ; theSGS*.

UE S%eciic RO Para6eters UE s%eciic RO %ara6eters "r &G 6"#e, :u 6"#e a'# S1-6"#eSe$ecte# *&S &$g"rith6 Se$ecte# *&S securit; a$g"rith6

eS: e; Set :#e'tiier "r the 6ai' Be; &SME. &$s" i'#icates hether the UE is usi'g

securit; Be;s #eri5e# r"6 UTR&* "r E-UTR&* securit; ass"ciati"'.

&SME Mai' Be; "r E-UTR&* Be; hierarch; ase# "' +, : a'# Ser5i'g 'et"rBi#e'tit;

*&S e;s a'# +8U*T *&Si't, *&Se'c, a'# *&S +8U*T %ara6eter.

Se$ecte# +* "%erat"r i# Se$ecte# c"re 'et"rB "%erat"r i#e'tit; (t" su%%"rt 'et"rB shari'g as #ei'e# i'TS 23.2!1 J24K).

Rec"5er; :'#icates i the 7SS is %er"r6i'g #ataase rec"5er;.

&ccess Restricti"' The access restricti"' suscri%ti"' i'"r6ati"'.

8C "r PS %ara6eters :'#icates that the status " the "%erat"r #eter6i'e# arri'g "r %acBet "rie'te#ser5ices.

&P*-8: Re%$ace6e't :'#icates the #"6ai' 'a6e t" re%$ace the &P*-8: he' c"'structi'g the P* GA

* u%"' hich t" %er"r6 a *S res"$uti"'. This re%$ace6e't a%%$ies "r a$$the &P*s i' the suscrier9s %r"i$e. See TS 23.003 JK c$ause .1.2 "r 6"rei'"r6ati"' "' the "r6at " #"6ai' 'a6es that are a$$"e# i' this ie$#.

MME :P a##ress "r S11 MME :P a##ress "r the S11 i'terace (use# ; S-GA)

MME TE: "r S11 MME Tu''e$ E'#%"i't :#e'tiier "r S11 i'terace.

S-GA :P a##ress "r S11S4 S-GA :P a##ress "r the S11 a'# S4 i'teraces

S-GA TE: "r S11S4 S-GA Tu''e$ E'#%"i't :#e'tiier "r the S11 a'# S4 i'teraces.

SGS* :P a##ress "r S3 SGS* :P a##ress "r the S3 i'terace (use# i :SR is acti5ate# "r the GER&*a'# "r UTR&* ca%a$e UE)

SGS* TE: "r S3 SGS* Tu''e$ E'#%"i't :#e'tiier "r S3 i'terace (use# i :SR is acti5ate# "r theE-UTR&* ca%a$e UE)

e*"#eC &##ress i' Use "r S1-MME

The :P a##ress " the e*"#eC curre't$; use# "r S1-MME.

e*C UE S1&P : U'iDue i#e'tit; " the UE ithi' e*"#eC.

MME UE S1&P : U'iDue i#e'tit; " the UE ithi' MME.

Suscrie# UE-&MCR The Ma/i6u6 &ggregate# u%$i'B a'# #"'$i'B MCR 5a$ues t" e share# acr"ssa$$ *"'-GCR earers acc"r#i'g t" the suscri%ti"' " the user.

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0ield =escription

UE-&MCR The curre't$; use# Ma/i6u6 &ggregate# u%$i'B a'# #"'$i'B MCR 5a$ues t" eshare# acr"ss a$$ *"'-GCR earers.

EPS Suscrie# +hargi'g+haracteristics

The chargi'g characteristics "r the UE e.g. '"r6a$, %re%ai#, $at rate a'#"r h"ti$$i'g.

Suscrie# RSP :'#e/ &' i'#e/ t" s%eciic RRM c"'igurati"' i' the E-UTR&* that is recei5e# r"6 the7SS.

RSP :'#e/ i' Use &' i'#e/ t" s%eciic RRM c"'igurati"' i' the E-UTR&* that is curre't$; i' use.Trace reere'ce :#e'tiies a rec"r# "r a c"$$ecti"' " rec"r#s "r a %articu$ar trace.

Trace t;%e :'#icates the t;%e " trace

Trigger i# :#e'tiies the e'tit; that i'itiate# the trace

8M+ i#e'tit; :#e'tiies the 8M+ that sha$$ recei5e the trace rec"r#(s).

URRP-MME URRP-MME i'#icati'g that the 7SS has reDueste# the MME t" '"ti; the 7SSregar#i'g UE reachai$it; at the MME

+SG Suscri%ti"' ata The +SG Suscri%ti"' ata is ass"ciate# $ists " +SG :s "r the 5isiti'g PLM*a'# the eDui5a$e't PLM*s " the 5isit'g PLM*, a'# "r each +SG : "%ti"'a$$; a'ass"ciate# e/%irati"' #ate hich i'#icates the %"i't i' ti6e he' the suscri%ti"'t" the +SG : e/%iresN a' ase't e/%irati"' #ate i'#icates u'$i6ite# suscri%ti"'."r a +SG : that ca' e use# t" access s%eciic P*s 5ia L"ca$ :P &ccess, the+SG : e'tr; i'c$u#es the c"rres%"'#i'g &P*(s).

L:P& &$$"e# S%eciies hether the UE is a$$"e# t" use L:P& i' this PLM*.

Suscrie# Peri"#ic R&UT&UTi6er

:'#icates a suscrie# Peri"#ic R&UT&U Ti6er 5a$ue.

MPS +S %ri"rit; :'#icates that the UE is suscrie# t" the eMLPP "r 1/ RTT %ri"rit; ser5ice i' the+S #"6ai'.

MPS EPS %ri"rit; :'#icates that the UE is suscrie# t" MPS i' the EPS #"6ai'.

V"ice Su%%"rt Match :'#icat"r &' i'#icati"' hether the hether UE ra#i" ca%ai$ities are c"6%ati$e ith the'et"rB c"'igurati"' (e.g. hether the SRV++ a'# reDue'c; su%%"rt ; the UE6atches th"se that the 'et"rB re$ies u%"' "r 5"ice c"5erage). The MME uses itas a' i'%ut "r setti'g the :MS 5"ice "5er PS Sessi"' Su%%"rte# :'#icati"'.

7"6"ge'"us Su%%"rt " :MSV"ice "5er PS Sessi"'s

:'#icates %er UE i @:MS V"ice "5er PS Sessi"'s@ is h"6"ge'e"us$; su%%"rte# i'a$$ T&s i' the ser5i'g MME "r h"6"ge'e"us$; '"t su%%"rte#, "r, su%%"rt is '"'-h"6"ge'e"usu'B'"', see c$ause 4.3.!.<&.

"r each acti5e P* c"''ecti"'

&P* i' Use The &P* curre't$; use#. This &P* sha$$ e c"6%"se# " the &P* *et"rB

:#e'tiier a'# the #eau$t &P* 8%erat"r :#e'tiier, as s%eciie# i' TS 23.003 JK,c$ause .1.2. &'; recei5e# 5a$ue i' the &P* 8: Re%$ace6e't ie$# is '"t a%%$ie#here.

&P* Restricti"' e'"tes the restricti"' "' the c"6i'ati"' " t;%es " &P* "r the &P* ass"ciate#ith this EPS earer +"'te/t.

&P* Suscrie# The suscrie# &P* recei5e# r"6 the 7SS.

P* T;%e :P54, :P5 "r :P545

:P &##ress(es) :P54 a##ress a'#"r :P5 %rei/*8TE The MME 6ight '"t ha5e i'"r6ati"' "' the a$$"cate# :P54 a##ress.

&$ter'ati5e$;, "$$"i'g 6"i$it; i'5"$5i'g a %re-re$ease < SGS*, this:P54 a##ress 6ight '"t e the "'e a$$"cate# t" the UE.

EPS P* +hargi'g+haracteristics

The chargi'g characteristics " this P* c"''ecti"', e.g. '"r6a$, %re%ai#, $at-ratea'#"r h"t i$$i'g.

&P*-8: Re%$ace6e't &P* $e5e$ &P*-8: Re%$ace6e't hich has sa6e r"$e as UE $e5e$ &P*-8:

Re%$ace6e't ut ith higher %ri"rit; tha' UE $e5e$ &P*-8: Re%$ace6e't. This isa' "%ti"'a$ %ara6eter. Ahe' a5ai$a$e, it sha$$ e use# t" c"'struct the P* GA* i'stea# " UE $e5e$ &P*-8: Re%$ace6e't.

S:PT8 %er6issi"'s :'#icates hether the traic ass"ciate# ith this &P* is %r"hiite# "r S:PT8,a$$"e# "r S:PT8 e/c$u#i'g S:PT8 at the $"ca$ 'et"rB, a$$"e# "r S:PT8i'c$u#i'g S:PT8 at the $"ca$ 'et"rB "r a$$"e# "r S:PT8 at the $"ca$ 'et"rB"'$;.

L"ca$ 7"6e *et"rB : : S:PT8HL* is e'a$e# "r this P* c"''ecti"' it i'#icates the i#e'tit; " theL"ca$ 7"6e *et"rB t" hich the (7)e*C e$"'gs.

L:P& %er6issi"'s :'#icates hether the P* ca' e accesse# 5ia L"ca$ :P &ccess. P"ssi$e 5a$uesare L:P&-%r"hiite#, L:P&-"'$; a'# L:P&-c"'#iti"'a$.

VPLM* &##ress &$$"e# S%eciies hether the UE is a$$"e# t" use the &P* i' the #"6ai' " the 7PLM*"'$;, "r a##iti"'a$$; the &P* i' the #"6ai' " the VPLM*.

P* GA &##ress i' Use

(c"'tr"$ %$a'e)

The :P a##ress " the P* GA curre't$; use# "r se'#i'g c"'tr"$ %$a'e sig'a$$i'g.

P* GA TE: "r S!S<(c"'tr"$ %$a'e)

P* GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< i'terace "r the c"'tr"$ %$a'e.("r GTP-ase# S!S< "'$;).

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0ield =escription

MS :'" +ha'ge Re%"rti'g &cti"'

*ee# t" c"66u'icate cha'ge i' User L"cati"' :'"r6ati"' t" the P* GA iththis EPS earer +"'te/t.

+SG :'"r6ati"' Re%"rti'g &cti"'

*ee# t" c"66u'icate cha'ge i' User +SG :'"r6ati"' t" the P* GA ith thisEPS earer +"'te/t.This ie$# #e'"tes se%arate$; hether the MMESGS* are reDueste# t" se'#cha'ges i' User +SG :'"r6ati"' "r (a) +SG ce$$s, () h;ri# ce$$s i' hich the

suscrier is a +SG 6e6er a'# (c) h;ri# ce$$s i' hich the suscrier is '"t a+SG 6e6er.

EPS suscrie# "S %r"i$e The earer $e5e$ "S %ara6eter 5a$ues "r that &P*9s #eau$t earer (+: a'# &RP) (see c$ause 4..3).

Suscrie# &P*-&MCR The Ma/i6u6 &ggregate# u%$i'B a'# #"'$i'B MCR 5a$ues t" e share# acr"ssa$$ *"'-GCR earers, hich are esta$ishe# "r this &P*, acc"r#i'g t" thesuscri%ti"' " the user.

&P*-&MCR The Ma/i6u6 &ggregate# u%$i'B a'# #"'$i'B MCR 5a$ues t" e share# acr"ssa$$ *"'-GCR earers, hich are esta$ishe# "r this &P*, as #eci#e# ; theP* GA.

P* GA GRE e; "r u%$i'Btraic (user %$a'e)

P* GA assig'e# GRE e; "r the S!S< i'terace "r the user %$a'e "r u%$i'Btraic. ("r PM:P-ase# S!S< "'$;)

eau$t earer :#e'tiies the EPS Cearer :# " the #eau$t earer ithi' the gi5e' P* c"''ecti"'.

$" access %ri"rit; :'#icates that the UE reDueste# $" access %ri"rit; he' the P* c"''ecti"' as

"%e'e#.*8TE The $" access %ri"rit; i'#icat"r is "'$; st"re# "r the %ur%"se t" e

i'c$u#e# i' chargi'g rec"r#s.

R&* assista'ce #ata e*"#eC tu'i'g %ara6eters st"re# i' MME hi$e UE is i' E+M-:LE 6"#e."r each earer ithi' the P* c"''ecti"'

EPS Cearer : &' EPS earer i#e'tit; u'iDue$; i#e'tiies a' EP S earer "r "'e UE accessi'g5ia E-UTR&*

T: Tra'sacti"' :#e'tiier

S-GA :P a##ress "r S1-u :P a##ress " the S-GA "r the S1-u i'teraces.

S-GA TE: "r S1u Tu''e$ E'#%"i't :#e'tiier " the S-GA "r the S1-u i'terace.

P* GA TE: "r S!S< (user%$a'e)

P-GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< i'terace "r the user %$a'e. (Use#"r S-GA cha'ge "'$;).*8TE The P* GA TE: is 'ee#e# i' MME c"'te/t as S-GA re$"cati"' is

triggere# ith"ut i'teracti"' ith the s"urce S-GA, e.g. he' a T&U

"ccurs. The Target S-GA reDuires this :'"r6ati"' E$e6e't, s" it 6uste st"re# ; the MME.

P* GA :P a##ress "r S!S<(user %$a'e)

P GA :P a##ress "r user %$a'e "r the S!S< i'terace "r the user %$a'e. (Use#"r S-GA cha'ge "'$;).*8TE The P* GA :P a##ress "r user %$a'e is 'ee#e# i' MME c"'te/t as

S-GA re$"cati"' is triggere# ith"ut i'teracti"' ith the s"urce S-GA,e.g. he' a T&U "ccurs. The Target S GA reDuires this :'"r6ati"'E$e6e't, s" it 6ust e st"re# ; the MME.

EPS earer "S +: a'# &RP"%ti"'a$$; GCR a'# MCR "r GCR earer

TT Traic $" Te6%$ate. ("r PM:P-ase# S!S< "'$;)

Ta4le +'-'&$&2 88 mer1ency 9onfi1uration =ata

The MM2 2merency 1onfiuration 8ata is used instead of 2 subscription data received from the @""- for all

emerency bearer services that are established by an MM2 on 2 reDuest.

0ield =escription

E6erge'c; &ccess P"i't *a6e(e6 &P*)

& $ae$ acc"r#i'g t" *S 'a6i'g c"'5e'ti"'s #escrii'g the access %"i't use# "rE6erge'c; P* c"''ecti"' (i$# car# '"t a$$"e#).

E6erge'c; "S %r"i$e The earer $e5e$ "S %ara6eter 5a$ues "r E6erge'c; &P*9s #eau$t earer (+:a'# &RP). The &RP is a' &RP 5a$ue reser5e# "r e6erge'c; earers.

E6erge'c; &P*-&MCR The Ma/i6u6 &ggregate# u%$i'B a'# #"'$i'B MCR 5a$ues t" e share# acr"ssa$$ *"'-GCR earers, hich are esta$ishe# "r the E6erge'c; &P*, as #eci#e#; the P* GA.

E6erge'c; P* GA i#e'tit; The statica$$; c"'igure# i#e'tit; " the P* GA use# "r e6erge'c; &P*. TheP* GA i#e'tit; 6a; e either a' * "r a' :P a##ress.

*"'-3GPP 78 E6erge'c; P*GA i#e'tit;

The statica$$; c"'igure# i#e'tit; " the P* GA use# "r e6erge'c; &P* he' aPLM* su%%"rts ha'#"5er t" '"'-3GPP access. The P* GA i#e'tit; 6a; eeither a' * "r a' :P a##ress.(*8TE 1)

*8TE-1 The * a$a;s res"$5es t" "'e P* GA.

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'OT2H E1& for 2merency P'$s default bearer is set per operator confiuration.

!..3 Ser5i'g GA

The "ervin G? maintains the followin 2P" bearer contet information for 2s. Table 9.<.3=, shows the contet

fields for one 2.

7or emerency attached 2s which are not authenticated- &M2& is stored in contet.

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0ield =escription $!TRA" !TRA"GRA"

:MS: :MS: (:'ter'ati"'a$ M"i$e Suscrier :#e'tit;) is the suscrier%er6a'e't i#e'tit;.

O O

:MS:-u'authe'ticate#-i'#icat"r

This is a' :MS: i'#icat"r t" sh" the :MS: is u'authe'ticate#. O O

ME :#e'tit; M"i$e EDui%6e't :#e'tit; (e.g. :ME::ME:SV). O O

MS:S* The asic MS:S* " the UE. The %rese'ce is #ictate# ; itsst"rage i' the 7SS.

O O

Se$ecte# +* "%erat"r i# Se$ecte# c"re 'et"rB "%erat"r i#e'tit; (t" su%%"rt 'et"rBshari'g as #ei'e# i' TS 23.2!1 J24K).

O O

MME TE: "r S11 MME Tu''e$ E'#%"i't :#e'tiier "r the S11 i'terace O

MME :P a##ress "r S11 MME :P a##ress the S11 i'terace. OS-GA TE: "r S11S4(c"'tr"$ %$a'e)

S-GA Tu''e$ E'#%"i't :#e'tiier "r the S11 :'terace a'# theS4 :'terace (c"'tr"$ %$a'e).

O O

S-GA :P a##ress "r S11S4(c"'tr"$ %$a'e)

S-GA :P a##ress "r the S11 i'terace a'# the S4 :'terace(c"'tr"$ %$a'e).

O O

SGS* :P a##ress "r S4(c"'tr"$ %$a'e)

SGS* :P a##ress "r the S4 i'terace (Use# ; the S-GA). O

SGS* TE: "r S4 (c"'tr"$%$a'e)

SGS* Tu''e$ E'#%"i't :#e'tiier "r the S4 i'terace. O

Trace reere'ce :#e'tiies a rec"r# "r a c"$$ecti"' " rec"r#s "r a %articu$artrace.

O O

Trace t;%e :'#icates the t;%e " trace O O

Trigger i# :#e'tiies the e'tit; that i'itiate# the trace O O8M+ i#e'tit; :#e'tiies the 8M+ that sha$$ recei5e the trace rec"r#(s). O O

Last B'"' +e$$ :# This is the $ast $"cati"' " the UE B'"' ; the 'et"rB O(*8TE 1)

O(*8TE 1)

Last B'"' +e$$ :# age This is the age " the a"5e UE $"cati"' i'"r6ati"' O(*8TE 1)

O(*8TE 1)

"r each P* +"''ecti"'*8TE The "$$"i'g e'tries are re%eate# "r each P*.

&P* i' Use The &P* curre't$; use#, as recei5e# r"6 the MME "r S4SGS*.

O O


The chargi'g characteristics " this P* c"''ecti"', e.g.'"r6a$, %re%ai#, $at-rate a'#"r h"t i$$i'g.

O O

P-GA &##ress i' Use(c"'tr"$ %$a'e)

The :P a##ress " the P-GA curre't$; use# "r se'#i'g c"'tr"$%$a'e sig'a$$i'g.

O O

P-GA TE: "r S!S<(c"'tr"$ %$a'e)

P-GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< i'terace "r thec"'tr"$ %$a'e. ("r GTP-ase# S!S< "'$;).

O O

P-GA &##ress i' Use (user%$a'e)

The :P a##ress " the P-GA curre't$; use# "r se'#i'g user%$a'e traic. ("r PM:P-ase# S!S< "'$;)

O O

P-GA GRE e; "r u%$i'Btraic (user %$a'e)

P* GA assig'e# GRE e; "r the S!S< i'terace "r theuser %$a'e "r u%$i'B tra ic. ("r PM:P-ase# S!S< "'$;)

O O

S-GA :P a##ress "r S!S<(c"'tr"$ %$a'e)

S-GA :P a##ress "r the S!S< "r the c"'tr"$ %$a'e sig'a$$i'g. O O

S-GA TE: "r S!S<(c"'tr"$ %$a'e)

S-GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< c"'tr"$ %$a'ei'terace. ("r GTP-ase# S!S< "'$;).

O O

S-GA &##ress i' Use (user%$a'e)

The :P a##ress " the S-GA curre't$; use# "r se'#i'g user%$a'e traic. ("r PM:P-ase# S!S< "'$;)

O O

S-GA GRE e; "r #"'$i'Btraic (user %$a'e)

Ser5i'g GA assig'e# GRE e; "r the S!S< i'terace "r theuser %$a'e "r #"'$i'B traic. ("r PM:P-ase# S!S< "'$;)

O O

eau$t Cearer :#e'tiies the #eau$t earer ithi' the P* c"''ecti"' ; itsEPS Cearer :#. ("r PM:P ase# S!S<.)

O O

"r each EPS Cearer ithi' the P* +"''ecti"'*8TEThe "$$"i'g e'tries #ei'i'g the EPS Cearer s%eciic %ara6eters are i'c$u#e# ithi' the set " %ara6eters #ei'i'gthe P* +"''ecti"'.EPS Cearer :# &' EPS earer i#e'tit; u'iDue$; i#e'tiies a' EPS earer "r

"'e UE accessi'g 5ia E-UTR&*O O

TT Traic $" Te6%$ate O O


The :P a##ress " the P-GA curre't$; use# "r se'#i'g user%$a'e traic. ("r GTP-ase# S!S< "'$;).

O O

P-GA TE: "r S!S< (user

%$a'e)

P-GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< i'terace "r the

user %$a'e. ("r GTP-ase# S!S< "'$;).

O O

S-GA :P a##ress "r S!S<(user %$a'e)

S-GA :P a##ress "r user %$a'e #ata recei5e# r"6 P* GA.("r GTP-ase# S!S< "'$;).

O O

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S-GA TE: "r S!S< (user%$a'e)

S-GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< i'terace "r theuser %$a'e. ("r GTP-ase# S!S< "'$;).

O O

S-GA :P a##ress "r S1-u,S12 a'# S4 (user %$a'e)

S-GA :P a##ress "r the S1-u i'terace (Use# ; the e*"#eC),"r the S12 i'terace (use# ; the R*+) a'# "r the S4i'terace (use# ; the SGS*).

O O

S-GA TE: "r S1-u, S12a'# S4 (user %$a'e)

S-GA Tu''e$ E'#%"i't :#e'tiier "r the S1-u i'terace, "r theS12 i'terace (use# ; the R*+) a'# "r the S4 i'terace (use#; the SGS*).

O O

e*"#eC :P a##ress "r S1-u e*"#eC :P a##ress "r the S1-u i'terace (Use# ; the S-GA). O

e*"#eC TE: "r S1-u e*"#eC Tu''e$ E'#%"i't :#e'tiier "r the S1-u i'terace. O

R*+ :P a##ress "r S12 R*+ :P a##ress "r the S12 i'terace (Use# ; the S-GA). O

R*+ TE: "r S12 R*+ Tu''e$ E'#%"i't :#e'tiier "r the S12 i'terace. O

SGS* :P a##ress "r S4(user %$a'e)

SGS* :P a##ress "r the S4 i'terace (Use# ; the S-GA). O

SGS* TE: "r S4 (user%$a'e)

SGS* Tu''e$ E'#%"i't :#e'tiier "r the S4 i'terace. O

EPS Cearer "S &RP, GCR, MCR, +:. O O

+hargi'g :# +hargi'g i#e'tiier, i#e'tiies chargi'g rec"r#s ge'erate# ;S-GA a'# P* GA.

O O

*8TE 1 The @Last '"' +e$$ :# &ge@ is st"re# s" that he' UE $"cati"' i'"r6ati"' is 6a#e a5ai$a$e r"6 "th E-UTR&* a'# UTR&*GER&*, the Ser5i'g GA ca' #eter6i'e the @Last '"' +e$$ :#@.

!..4 P* GA

The P8' G? maintains the followin 2P" bearer contet information for 2s. Table 9.<.;=, shows the contet fields

for one 2.

7or emerency attached 2s which are not authenticated- &M2& is stored in contet.

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Ta4le +'-'$%2 P$GB conteFt

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:MS: :MS: (:'ter'ati"'a$ M"i$e Suscrier :#e'tit;) is thesuscrier %er6a'e't i#e'tit;.

O O

:MS:-u'authe'ticate#-i'#icat"r

This is a' :MS: i'#icat"r t" sh" the :MS: is u'authe'ticate#. O O

ME :#e'tit; M"i$e EDui%6e't :#e'tit; (e.g. :ME::ME:SV). O O

MS:S* The asic MS:S* " the UE. The %rese'ce is #ictate# ; itsst"rage i' the 7SS.

O O

Se$ecte# +* "%erat"r i# Se$ecte# c"re 'et"rB "%erat"r i#e'tit; (t" su%%"rt 'et"rBshari'g as #ei'e# i' TS 23.2!1 J24K).

O O

R&T t;%e +urre't R&T O O

Trace reere'ce :#e'tiies a rec"r# "r a c"$$ecti"' " rec"r#s "r a %articu$artrace.

O O

Trace t;%e :'#icates the t;%e " trace O O

Trigger i# :#e'tiies the e'tit; that i'itiate# the trace O O

8M+ i#e'tit; :#e'tiies the 8M+ that sha$$ recei5e the trace rec"r#(s). O O

"r each &P* i' use*8TE The "$$"i'g e'tries are re%eate# "r each &P*.

&P* i' use The &P* curre't$; use#, as recei5e# r"6 the S-GA. O O

&P*-&MCR The 6a/i6u6 aggregate# u%$i'B a'# #"'$i'B MCR 5a$uest" e share# acr"ss a$$ *"'-GCR earers, hich areesta$ishe# "r this &P*.

O O

"r each P* +"''ecti"' ithi' the &P**8TE The "$$"i'g e'tries are re%eate# "r each P* c"''ecti"' ithi' the &P*.:P &##ress(es) :P54 a##ress a'#"r :P5 %rei/ O O

P* t;%e :P54, :P5, "r :P545 O O

S-GA &##ress i' Use(c"'tr"$ %$a'e)

The :P a##ress " the S-GA curre't$; use# "r se'#i'gc"'tr"$ %$a'e sig'a$$i'g.

O O

S-GA TE: "r S!S<(c"'tr"$ %$a'e)

S-GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< i'terace "rthe c"'tr"$ %$a'e. ("r GTP-ase# S!S< "'$;).

O O

S-GA &##ress i' Use (user%$a'e)

The :P a##ress " the S-GA curre't$; use# "r se'#i'g user%$a'e traic. ("r PM:P-ase# S!S< "'$;).

O O

S-GA GRE e; "r #"'$i'Btraic (user %$a'e)

Ser5i'g GA assig'e# GRE e; "r the S!S< i'terace "rthe user %$a'e "r #"'$i'B traic. ("r PM:P-ase# S!S<"'$;).

O O

P-GA :P a##ress "r S!S<(c"'tr"$ %$a'e)

P-GA :P a##ress "r the S!S< "r the c"'tr"$ %$a'esig'a$$i'g.

O O

P-GA TE: "r S!S<(c"'tr"$ %$a'e)

P-GA Tu''e$ E'#%"i't :#e'tiier "r the S!S< c"'tr"$ %$a'ei'terace. ("r GTP-ase# S!S< "'$;).

O O


The :P a##ress " the P-GA curre't$; use# "r se'#i'g user%$a'e traic. ("r PM:P-ase# S!S< "'$;).

O O

P-GA GRE e; "r u%$i'Btraic (user %$a'e)

P* GA assig'e# GRE e; "r the S!S< i'terace "r theuser %$a'e "r u%$i'B traic. ("r PM:P-ase# S!S< "'$;).

O O

MS :'" +ha'ge Re%"rti'gsu%%"rt i'#icati"'

The MME a'#"r SGS* ser5i'g the UE su%%"rt(s)%r"ce#ures "r re%"rti'g User L"cati"' :'"r6ati"' a'#"rUser +SG :'"r6ati"' cha'ges.

O

MS :'" +ha'ge Re%"rti'g &cti"'

e'"tes hether the MME a'#"r the SGS* isarereDueste# t" se'# cha'ges i' User L"cati"' :'"r6ati"'

cha'ge "r this earer.

O O

+SG :'"r6ati"' Re%"rti'g &cti"'

e'"tes hether the MME a'#"r the SGS* isarereDueste# t" se'# cha'ges i' User +SG :'"r6ati"' cha'ge"r this earer.This ie$# #e'"tes se%arate$; hether the MMESGS* arereDueste# t" se'# cha'ges i' User +SG :'"r6ati"' "r (a)+SG ce$$s, () h;ri# ce$$s i' hich the suscrier is a +SG6e6er, a'# (c) h;ri# ce$$s i' hich the suscrier is '"t a+SG 6e6er, "r a'; c"6i'ati"' " the a"5e.

O O

C+M The 'eg"tiate# Cearer +"'tr"$ M"#e "r GER&*UTR&*. O

eau$t Cearer :#e'tiies the #eau$t earer ithi' the P* c"''ecti"' ; itsEPS Cearer :#. The #eau$t earer is the "'e hich isesta$ishe# irst ithi' the P* c"''ecti"'. ("r GTP ase#S!S< "r "r PM:P ase# S!S< i 6u$ti%$e P* c"''ecti"'s

t" the sa6e &P* are su%%"rte#).

O O


The chargi'g characteristics " this P* c"''ecti"' e.g.'"r6a$, %re%ai#, $at-rate a'#"r h"t i$$i'g.

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Ta4le +'-'+$%2 ! conteFt

0ield =escription

:MS: :MS: (:'ter'ati"'a$ M"i$e Suscrier :#e'tit;) is the suscriers %er6a'e't i#e'tit;.

EMM State M"i$it; 6a'age6e't state EMM-REG:STERE, EMM-EREG:STERE.GUT: G$"a$$; U'iDue Te6%"rar; :#e'tit;.

ME :#e'tit; M"i$e EDui%6e't :#e'tit; Q (e.g. :ME::ME:SV) S"tare Versi"' *u6er.

TracBi'g &rea List +urre't TracBi'g area $ist.$ast 5isite# T&: & T&: hich is c"'tai'e# i' the T& $ist the UE registere# t" the 'et"rB a'# hich

i#e'tiies the tracBi'g area $ast 5isite# ; the UE.

Se$ecte# *&S &$g"rith6 Se$ecte# *&S securit; a$g"rith6.

Se$ecte# &S &$g"rith6 Se$ecte# &S securit; a$g"rith6s.

eS: e; Set :#e'tiier "r the 6ai' Be; &SME. &$s" i'#icates hether the UE is usi'g

securit; Be;s #eri5e# r"6 UTR&* "r E-UTR&* securit; ass"ciati"'

&SME Mai' Be; "r E-UTR&* Be; hierarch; ase# "' +, : a'# Ser5i'g 'et"rB i#e'tit;.

*&S e;s a'# +8U*T *&Si't, *&Se'c, a'# *&S +8U*T %ara6eter.

Te6%"rar; :#e'tit; use# i'*e/t u%#ate (T:*)

This %ara6eter is use# i'ter'a$$; ; the UE t" 6e6"rise hich te6%"rar; : it hast" i'#icate i' the &ttach ReDuest a'# R&UT&U ReDuest as s%eciie# i' c$ause4.3.!..

UE S%eciic RO

Para6eters

Preerre# E-UTR&* RO c;c$e $e'gth

&$$"e# +SG $ist The &$$"e# +SG $ist, hich is u'#er "th user a'# "%erat"r c"'tr"$, i'#icates the$ist " +SG :s a'# the ass"ciate# PLM* here the UE is a 6e6er.

8%erat"r +SG $ist The 8%erat"r +SG $ist, hich is u'#er e/c$usi5e 8%erat"r c"'tr"$, i'#icates the $ist" +SG :s a'# the ass"ciate# PLM* here the UE is a 6e6er.

0or each active P=" connection2

&P* i' Use The &P* curre't$; use#. This &P* sha$$ e c"6%"se# " the &P* *et"rB :#e'tiiera'# the #eau$t &P* 8%erat"r :#e'tiier, as s%eciie# i' TS 23.003 JK, c$ause .1.2.

&P*-&MCR The 6a/i6u6 aggregate# u%$i'B a'# #"'$i'B MCR t" e share# acr"ss a$$ *"'-GCR earers, hich are esta$ishe# "r this &P*.

&ssig'e# P* T;%e The P* T;%e assig'e# ; the 'et"rB (:P54, :P5, "r :P545).

:P &##ress(es) :P54 a##ress a'#"r :P5 %rei/

eau$t Cearer :#e'tiies the #eau$t earer ithi' the P* c"''ecti"' ; its EPS Cearer :#. The#eau$t earer is the "'e hich is esta$ishe# irst ithi' the P* c"''ecti"'.

0or each PS >earer #ithin the P=" connectionEPS Cearer : &' EPS earer i#e'tit; u'iDue$; i#e'ti ies a' EPS earer "r "'e UE accessi'g 5ia

E-UTR&*.

T: Tra'sacti"' :#e'tiier

EPS earer "S GCR a'# MCR "r GCR earer.

TT Traic $" Te6%$ate.

!.. 7a'#$i'g " Ai$# +ar# &P*

?hen the wild card P' is present in the subscription contet- the 2 is authori!ed to connect to P's which are not

present in the subscription contet.

?hen a reDuest is received for reisterin a P8' G? &8 and there is no P8' subscription contet with this P'- the

nodes (@""AMM2A "; "G"') shall store the P8' G? &8 = P' relation for the 2.

?hen a reDuest is received for dereisterin of P8' G? &8 and there is no P8' subscription contet with this P'-

the nodes (@""AMM2A"; "G"') shall delete the P8' G? &8 = P' relation from the list of P' = P8' G? &8relations.

!.. +SS

Please refer to T" *3.++> J*>K for the content of the information storae for the 1"".

!.& +hargi'g

ccountin functionality is provided by the "ervin G? and the P8' G?.

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The "ervin G? shall be able to collect and report for each 2 accountin information- i.e. the amount of datatransmitted in uplin# and downlin# direction cateori!ed with the E1& and /P pair per 2 per P8' connection. 7or

GTP=based "9A"> the accountin information is collected and reported per bearer.

The "ervin G? shall not collect 2 accountin information for pac#ets that are bein processed for the sole purpose

of indirect forwardin.

The "ervin G? for inter=operator charin- and the P8' G? shall be able to interface the O71" accordin tocharin principles and throuh reference points specified in T" 3*.*;+ J9,K.

The P8' G? shall be able to provide charin functionality for each 2 accordin to T" *3.*+3 J:K.

P8' G? without a G interface shall be able to support flow based online and offline charin based on localconfiuration and interaction with the Online and Offline 1harin "ystems.

The P8' G? shall be able to collect and report- for each 2- accountin information- i.e. the amount of datatransmitted in uplin# and downlin# direction cateori!ed with the E1& and /P pair per 2 per P8' connection. 7or

GTP=based "9A"> the accountin information is collected and reported per bearer. The P8' G? data collection can be

temporarily paused as described in clause 9.3.:.

The 1harin identifier(s) enerated by the P8' G? per bearer for GTP=based "9A"> and per P8' connection forPM&P=based "9A"> and the P8' G? address for control sinallin enables the correlation of the reportin from a

"ervin G? and a P8' G?. The 1harin identifier is uniDuely assined within the P8' G?.

The P8' G? receives 1harin 1haracteristics from the "ervin G? throuh GTP="9A">- or throuh PM&P for PM&P=

based "9A">. The handlin of the 1harin 1haracteristics in the P=G? is defined in T" 3*.*9, J;;K.

To enable 1"G charin function for a subscriber consumin networ# services via a 1"G cell or a hybrid cell- ser

1"G &nformation is transferred to the P8' G? as indicated by 1"G &nformation /eportin ction. ser 1"G

&nformation includes 1"G &8- access mode and 1"G membership indication. 1"G membership indication of whether

the 2 is a member of the 1"G is included if the access mode is hybrid.

The valid 1"G information shall be available in the servin G? and P8' G? in connected mode.

The P1/7 shall- if deployed- provide ser 1"G &nformation reportin rules to the P8' G? at ttach and P8'1onnectivity /eDuest. P8' G? sets the 1"G &nformation /eportin ction &2 accordin to the ser 1"G &nformation

reportin rules and sends it to "ervin G? and MM2.

!.< MCMS

M0M" is a point=to=multipoint service in which data is transmitted from a sinle source entity to multiple recipients.Transmittin the same data to multiple recipients allows networ# resources to be shared.

"upport of M0M" for 2P" is defined in T" *3.*;: J,3K.

!. :'teracti"'s ith "ther ser5ices

!..1 L"cati"' Re%"rti'g Pr"ce#ure

This procedure is used by an MM2 to reDuest the e'ode0 to report where the 2 is currently located when the taret2 is in 21M=1O''21T28 state. The need for the e'ode0 to continue reportin ceases when the 2 transitions to

21M=&852. This procedure may be used for services that reDuire accurate cell identification (e.. for emerency

services- lawful intercept- charin).

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MME

1. L"cati"' re%"rti'g c"'tr"$

2. L"cati"' Re%"rt

e*"#eC

3. +a'ce$ $"cati"' re%"rti'g

0i1ure +'/'%$%2 @ocation Reportin1 Procedure

,) The MM2 sends a 5ocation /eportin 1ontrol messae to the e'ode0. The 5ocation /eportin 1ontrol

messae shall identify the 2 for which reports are reDuested- the reDuested location information and may

contain information such as reportin type. /eDuested location information is T&S2G1&. /eportin typeindicates whether the messae is intended to trier a sinle stand=alone report about the current 1ell &8 servin

the 2 or start the e'ode0 to report whenever the 2 chanes cell.

*) The e'ode0 sends a 5ocation /eport messae informin the MM2 about the location of the 2 which shallinclude the reDuested location information.

3) The MM2 can send a 1ancel 5ocation /eportin messae to inform the e'ode0 that it should terminate locationreportin for a iven 2. This messae is needed only when the reportin was reDuested for a reportin period.

'OT2H 5ocation reportin is transferred durin F* handover- althouh new control sinallin is not transferred

durin an active handover.

!..2 L"cati"' +ha'ge Re%"rti'g Pr"ce#ure

!..2.1 Ge'era$

The PG? may reDuest for each P8' connection independently by usin the LM" &nfo 1hane /eportin ctionL parameter whether the MM2 shall report chanes of 21G&AT& andAor the 2 enterinAleavin a Presence /eportin

rea andAor by usin L1"G &nformation /eportin ctionL parameter whether the MM2 shall report chanes of user1"G information to the PG?. &n addition the PG? may reDuest that the 21G&AT& chanes shall be reported for a

P8' connection only when one or more 2=/0(s) are established.

The reportin of 2 enterinAleavin a Presence /eportin rea is further described in clause 9.C.*.*.

The PG? may also reDuest the MM2 to stop such reportin. The MM2 shall obey the last eplicit instruction received

from the PG? or source MM2A";="G"'.

8urin both mobility manaement and session manaement procedures- the MM2 shall indicate to the PG? thesupport of reportin location chanesH

= &f 21G&AT&information is permitted to be sent to the PG? accordin to MM2 operator$s policyH

= &f the MM2 supports 21G&AT& chane reportin for a P8' connection only when one or more 2=/0(s) are

established-

= &f information about enterinAleavin of a Presence /eportin rea is permitted to be sent to the PG? accordin

to MM2 operator$s policy-

= &f 1"G information is permitted to be sent to the PG? accordin to MM2 operator$s policy.

&f the level of support chanes durin a mobility manaement procedure then the MM2 shall indicate the current level

of support to the "=G? and shall in addition provide 21G&AT& even if the PG? has not reDuested this information.This could for eample happen durin MM2 chane when the level of support indicated by the old MM2 is not the

same as in the new MM2.

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'OT2 ,H The inclusion of 21G&AT& will trier a Modify 0earer /eDuest messae from "=G? to the PG? andtherefore this will ma#e sure that the new level of support reaches the PG?.

The PG? shall not reDuest the MM2 to report location chanes if it has not received the indication for correspondinsupport from the MM2.

The followin procedure shall be used for location chane reports to the PG? where the report is not combined with

other mobility manaement or session manaement sinallin.The procedure shall only apply when the MM2 has beeneplicitly reDuested to report location chanes.

'OT2 *H 8ue to the increased sinallin load- it is recommended that 21G&AT& or 1"G reportin is only applied

for a limited number of subscribers.

7iure 9.C.*.,=, represents the 21G& chane trierin a report of chane in 21G&- andAor the ser 1"G information

chane trierin a report of chane in user 1"G information. The fiure also shows the reportin of a T& chaneandAor when a 2 enters or leaves a Presence /eportin rea.

1a. E+G: :'" U%#ate

MME SGA PGA e*"#eC UE

2. +ha' e *"tiicati"'

3. +ha' e *"tiicati"'

4. +ha'ge *"tiicati"' &cB

!. +ha'ge *"tiicati"' &cB

1. MME #etects User +SG:'" cha'ges

1#. MME #etects P++ areae'teri'g$ea5i'g

1c. MME #etects T&: cha'ge

0i1ure +'/'&'%$%2 "otification of the 9G7 andor user 9SG information chan1es

,a. the MM2 has received an 21G& information pdate from the e'ode0.

,b. The MM2 detects that the user 1"G information has chaned by comparin with the MM2 stored user 1"Ginformation- or

,c. The MM2 detects that the T& of the 2 has chaned- or

,d. The MM2 detects that the 2 has entered or left the Presence /eportin rea defined for this 2.

'OT2 3H &t is possible that these chanes are triered at same time.

*. &f the MM2 has been reDuested to report location chanes to the PG? for the 2 (under the conditions specified

in clause 9.C.*)- the MM2 shall send the 1hane 'otification messae to the "G? indicatin the new 21G&andAor user 1"G information andAor whether the 2 has entered or left a Presence /eportin rea. The MM2

stores the notified user 1"G information.

3. The "G? forwards the 1hane 'otification messae to the PG?. &f dynamic P11 is deployed- and location

chanes need to be conveyed to the P1/7- then the PG? shall send this information to the P1/7 as defined inT" *3.*+3 J:K.

;. The PG? sends the 1hane 'otification c# to the "G?.

9. The "G? forwards the 1hane 'otification c# to the MM2.

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!..2.2 Re%"rti'g at Prese'ce Re%"rti'g &rea e'teri'g a'# $ea5i'g

&n some use cases policy controlAcharin decisions- such as Eo" modification or charin rate chane depend onwhether the 2 is located inside or outside a specific area of interest (Presence /eportin rea)- and especially on

whether the 2 enters or leaves that specific area of interest.

Presence /eportin rea can beH

= 2ither a L2=dedicated Presence /eportin reaL- defined in the subscriber profile and composed of a short listof servin areas (TA/)- or e'0s andAor cellsA" in a P5M'I

= Or a L1ore 'etwor# predefined Presence /eportin reaL- predefined in MM2A"G"' and composed of a short

list of servin areas (TA/)- or e'0s andAor cellsA" in a P5M'.

'OT2 ,H e'0s are identified via the Global e'0 &8 &2 defined in T" 3:.;,3 J3:K.

The reportin of chanes of 2 presence in Presence /eportin rea reportin is for a specific 2 and is triered as

defined in T" *3.*+3 J:K. 7or 2=dedicated Presence /eportin reas- the reportin reDuest shall contain the list ofservin areas (TA/)- or e'0s andAor cellsA" composin the Presence /eportin rea. 7or 1ore 'etwor# predefined

Presence /eportin reas- the reportin reDuest shall contain the Presence /eportin rea identifier.

pon reception of a chane of 2 presence in Presence /eportin rea reportin reDuest- the MM2 shall report to the

PG? via the "G? at chane of 2 presence in Presence /eportin rea with an indication on whether the 2 hasentered or left the Presence /eportin rea- if the 2 has 2=/0(s) established for the P8' connection. &n this version

of the specification- only one Presence /eportin rea may be set for a iven P8' connection at a time.

The PG? shall be notified only when the 2 enters or leaves the Presence /eportin rea- and no notifications are sent

for 2 movements inside or outside the Presence /eportin rea. The actual chane of 2 presence in Presence/eportin rea report shall contain an indication on whether the 2 is inside or outside the area and the Presence

/eportin rea identifier.

'OT2 *H 1hane of 2 presence in Presence /eportin rea reportin is not enerally meant to apply to roamin

cases not associated with 'etwor# "harin.

pon chane of servin 2P1 node (MM2- "G"'- "G?)- the correspondin M" &nfo 1hane /eportin ction and if provided by the PG? the list of Presence /eportin rea elements are transferred as part of MM2 1ontet information.&n addition- the last chane of 2 presence in Presence /eportin rea that was reported to the PG? by the source

servin node shall be stored in the MM2 1ontet and forwarded to the taret servin node as part of the mobility procedure. The taret servin node indicates to the PG? whether the reportin of a chane of 2 presence in Presence

/eportin rea is supported- the Presence /eportin rea identifier and whether the 2 is inside or outside thePresence /eportin rea.

'OT2 3H &f chane of 2 presence in Presence /eportin rea reportin is not supported- the P1/7 may activate5ocation chane reportin at cell andAor servin area level.

!.10 Mu$ti%$e-P* su%%"rt

!.10.1 Ge'era$

The 2P" shall support simultaneous echane of &P traffic to multiple P8's throuh the use of separate P8' G?s or

sinle P8' G?. The usae of multiple P8's is controlled by networ# policies and defined in the user subscription.

The 2P" shall support 2=initiated connectivity establishment in order to allow multiple P8' connections to one or

more P8's. &t shall be possible for a 2 to initiate disconnection from any P8'.

ll simultaneous active P8' connections of a 2 that are associated with the same P' shall be provided by the same

P=G?.

2 support for multiple P8' connections is optional.

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!.10.2 UE reDueste# P* c"''ecti5it;

The 2 reDuested P8' connectivity procedure for an 2=T/' is depicted in fiure 9.,+.*=,. The procedure allowsthe 2 to reDuest for connectivity to an additional P8' over 2=T/' includin allocation of a default bearer- if the

2 already has active P8' connections over 2=T/'. This procedure is also used to reDuest for connectivity to anadditional P8' over 2=T/'- if the 2 is simultaneously connected to 2=T/' and a non=3GPP access and the

2 already has active P8' connections over both accesses. The P8' connectivity procedure may trier one ormultiple 8edicated 0earer 2stablishment procedures to establish dedicated 2P" bearer(s) for that 2.

n emerency attached 2 shall not initiate any P8' 1onnectivity /eDuest procedure. normal attached 2 shall

reDuest a P8' connection for emerency services when 2merency "ervice is reDuired and an emerency P8'

connection is not already active.

1. P* +"''ecti5it; ReDuest

MME Ser5i'g GA P+R 7SS P* GA e*"#eC UE

. +reate Sessi"' Res%"'se


. Cearer Setu% ReDuest P* +"''ecti5it; &cce%t

irst U%$i'B ata


!. +reate Sessi"' Res%"'se


<. RR+ +"''ecti"' Rec"'igurati"'

10. Cearer Setu% Res%"'se



irst "'$i'B ata

irst "'$i'B ata

1!. *"ti; ReDuest

1. *"ti; Res%"'se

(A) 4. :P-+&* Sessi"'

Esta$ish6e'tM"#iicati"'

(>)13.a M"#i; Cearer reDuest

13. M"#i; Cearer res%"'se

11. irect Tra'ser

12. P* +"''ecti5it; 1omplete

0i1ure +'%'&$%2 ! re:uested P=" connectivity

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps 3- ;- 9 and ,3aAb

concern GTP based "9A">.

'OT2 *H The 2 also uses this procedure to reDuest re=establishment of eistin P8' connectivity upon handover

from non=3GPP accesses.

'OT2 3H The steps in (0) are eecuted only upon handover from non=3GPP access.

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,. The 2 initiates the 2 /eDuested P8' procedure by the transmission of a P8' 1onnectivity /eDuest (P'-P8' Type- Protocol 1onfiuration Options- /eDuest Type) messae. &f the 2 was in 21M=&852 mode- this

'" messae is preceded by the "ervice /eDuest procedure. P8' type indicates the reDuested &P version (&Pv;-&Pv;v:- &Pv:). The MM2 verifies that the P' provided by 2 is allowed by subscription. &f the 2 did not

provide an P'- the MM2 shall use the P' from the default P8' subscription contet- and- use this P' forthe remainder of this procedure. Protocol 1onfiuration Options (P1O) are used to transfer parameters between

the 2 and the P8' G?- and are sent transparently throuh the MM2 and the "ervin G?. The Protocol1onfiuration Options may include the ddress llocation Preference- which indicates that the 2 prefers to

obtain an &Pv; address only after the default bearer activation by means of 8@1Pv;. &f the 2 has T/' orG2/' capabilities- it shall send the '/" in the P1O to indicate the support of the networ# reDuested bearer

control in T/'AG2/'. The 2 sends the 2T7T in the P1O to indicate the support of the etended T7Tfilter format. The /eDuest Type indicates Linitial reDuestL if the 2 reDuests new additional P8' connectivity

over the 3GPP access networ# for multiple P8' connections- the /eDuest Type indicates LhandoverL when the2 is performin a handover from non=3GPP access and the 2 has already established connectivity with the

P8' over the non=3GPP access.

The 2 shall indicate /eDuest Type L2merencyL when it reDuests a P8' connection for emerency services.

&f the messae is bein sent via a @e'0 which has a collocated 5=G?- it includes the 5=G? address in theplin# '" transport messae to the MM2.

*. &f the MM2 receives a P8' 1onnectivity /eDuest from an emerency attached 2 or the P8' 1onnectivity/eDuest is for normal services and the mobility or access restrictions do not allow the 2 to access normal

services the MM2 shall reject this reDuest.

&f the /eDuest Type indicates L2merencyL and the MM2 is not confiured to support P8' connections for

emerency services the MM2 shall reject the P8' 1onnectivity /eDuest with an appropriate reject cause.

&f the /eDuest Type indicates L2merencyL- the MM2 derives a P8' G? from the MM2 2merency

1onfiuration 8ata or the MM2 selects a P8' G? as described in clause ;.3.,*.; on P8' G? "election7unction (3GPP accesses) accordin to the 2merency P' in the MM2 2merency 1onfiuration 8ata. This

selection shall provide a P8' G? from visited P5M' only.

&f the /eDuest Type indicates L2merencyL and the MM2 is confiured to support P8' connections foremerency services- it uses the MM2 2merency 1onfiuration 8ata for the bearer establishment in this step

and inores any subscription data limitation.

&f the /eDuest Type indicates L@andoverL- the MM2 uses the P8' G? stored in the "ubscription 8ata retrieved by the MM2 durin the pdate 5ocation performed at attach. &f the /eDuest Type indicates Linitial reDuestL the

MM2 selects a P8' G? as described in clause ;.3.>., on P8' G? "election 7unction (3GPP accesses).

&f the 2 provided P' is authori!ed for 5&P accordin to the user subscription- the MM2 shall use the 1"G

"ubscription 8ata to authori!e the connection.

The MM2 allocates a 0earer &d- and sends a 1reate "ession /eDuest (&M"&- M"&"8'- MM2 T2&8 for control

plane- /T type- P8' G? address- P8' ddress- 8efault 2P" 0earer Eo"- P8' Type- subscribed P'=

M0/- P'- 2P" 0earer &d- Protocol 1onfiuration Options- @andover &ndication- M2 &dentity- ser 5ocation

&nformation (21G&)- 2 Time None- ser 1"G &nformation- M" &nfo 1hane /eportin support indication-"election Mode- 1harin 1haracteristics- Trace /eference- Trace Type- Trier &d- OM1 &dentity- Maimum

P' /estriction- 8ual ddress 0earer 7la) messae to the "ervin G?.

The /T type is provided in this messae for the later P11 decision. The M"&"8' is included if the MM2 has

it stored for that 2. @andover &ndication is included if the /eDuest Type indicates LhandoverL. "election Modeindicates whether a subscribed P' was selected- or a non=subscribed P' sent by the 2 was selected. The

P=G? may use "election Mode when decidin whether to accept or reject the default bearer activation. 7oreample- if an P' reDuires subscription- the P=G? is confiured to accept only the default bearer activation

that reDuests a subscribed P' as indicated by "election Mode. 1harin 1haracteristics indicates which #ind ofcharin the bearer contet is liable for.

The charin characteristics for the P" subscription and individually subscribed P's as well as the way of

handlin 1harin 1haracteristics and whether to send them or not to the P=G? is defined in T" 3*.*9, J;;K.The MM2 shall include Trace /eference- Trace Type- Trier &d- and OM1 &dentity if "=G? andAor P=G? trace

is activated. The MM2 shall copy Trace /eference- Trace Type- and OM1 &dentity from the trace information

received from the @5/ or OM1.

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The Maimum P' /estriction denotes the most strinent restriction as reDuired by any already active bearercontet. &f there are no already active bearer contets- this value is set to the least restrictive type (see clause ,9.;

of T" *3.+:+ J<K). &f the P=G? receives the Maimum P' /estriction- then the P=G? shall chec# if theMaimum P' /estriction value does not conflict with the P' /estriction value associated with this bearer

contet reDuest. &f there is no conflict the reDuest shall be allowed- otherwise the reDuest shall be rejected withsendin an appropriate error cause to the 2.

&f the P8' subscription contet contains a subscribed &Pv; address andAor &Pv: prefi- the MM2 indicates it inthe P8' address. The MM2 may chane the reDuested P8' type accordin to the subscription data for this P'

as described in clause 9.3.,.,. The MM2 shall set the 8ual ddress 0earer 7la when the P8' type is set to&Pv;v: and all "G"'s which the 2 may be handed over to are /elease > or above supportin dual addressin-

which is determined based on node pre=confiuration by the operator.

3. The "ervin G? creates a new entry in its 2P" 0earer table and sends a 1reate "ession /eDuest (&M"&-

M"&"8'- "ervin G? ddress for the user plane- "ervin G? T2&8 of the user plane- "ervin G? T2&8 ofthe control plane- /T type- 8efault 2P" 0earer Eo"- P8' Type- P8' ddress- subscribed P'=M0/-

P'- 0earer &d- Protocol 1onfiuration Options- @andover &ndication- M2 &dentity- ser 5ocation &nformation(21G&)- 2 Time None- ser 1"G &nformation- M" &nfo 1hane /eportin support indication- P8' 1harin

Pause "upport indication- "election Mode- 1harin 1haracteristics- Trace /eference- Trace Type- Trier &d-OM1 &dentity- Maimum P' /estriction- 8ual ddress 0earer 7la) messae to the P8' G? indicated in the

P8' G? address received in the previous step. fter this step- the "ervin G? buffers any downlin# pac#ets itmay receive from the P8' G? until receives the messae in step ,3 below. The M"&"8' is included if

received from the MM2. &f the @andover &ndication is included- the "ervin G? includes it in the 1reate"ession /eDuest messae.

P=G?s shall not perform any chec#s of Maimum P' /estriction if 1reate 8efault 0earer /eDuest includes

emerency P'.

;. &f dynamic P11 is deployed and the @andover &ndication is not present- the P8' G? may employ an &P=1'"ession 2stablishment procedure as defined in T" *3.*+3 J:K with the P1/7 to et the default P11 rules for the

2. This may lead to the establishment of a number of dedicated bearers followin the procedures defined inclause 9.;., in association with the establishment of the default bearer which is described in nne 7.

The /T type is provided to the P1/7 by the P8' G? if received by the previous messae. &f the P8'G?AP127 is confiured to activate predefined P11 rules for the default bearer- the interaction with the P1/7 is

not reDuired (e.. operator may confiure to do this) at the moment.

The 2T7T is provided to the P1/7 by the P8' G?- if received in the P1O from the 2 and the P8' G?

supports the etended T7T filter format. &f the P1/7 decides that the P8' connection may use etended T7Tfilters- it shall return the 2T7T' indicator to the P8' G? for inclusion in the protocol 1onfiuration Options

returned to the 2.

The P1/7 may modify the P'=M0/ and the Eo" parameters (E1& and /P) associated with the default

bearer in the response to the P8' G? as defined in T" *3.*+3 J:K.

&f the P11 is confiured to support emerency services and dynamic P11 is deployed- the P1/7- based on the

2merency P'- sets the /P of the P11 rules to a value that is reserved for emerency services and theauthori!ation of dynamic P11 rules as described in T" *3.*+3 J:K. &f dynamic P11 is not deployed- the P8'

G? is confiured to set the /P to a value that is reserved for emerency services.

&f dynamic P11 is deployed and the @andover &ndication is present- the P8' G? eecutes a P127=&nitiated

&P=1' "ession Modification procedure with the P1/7 as specified in T" *3.*+3 J:K to report the new &P=1'type. 8ependin on the active P11 rules- the establishment of dedicated bearer for the 2 may be reDuired. The

establishment of those bearers shall ta#e place in combination with the default bearer activation as described innne 7. This procedure can continue without waitin for a P1/7 response. &f chanes to the active P11 rules

are reDuired- the P1/7 may provide them after the handover procedure is finished.

&n both cases (@andover &ndication is present or not)- if dynamic P11 is not deployed- the P8' G? may apply

local Eo" policy. This may lead to the establishment of a number of dedicated bearers for the 2 followin the procedures defined in clause 9.;., in combination with the establishment of the default bearer- which is

described in nne 7.

&f the 1"G information reportin triers are received from the P1/7- the P8' G? should set the 1"G

&nformation /eportin ction &2 accordinly.

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9. The P=G? creates a new entry in its 2P" bearer contet table and enerates a 1harin &d for the 8efault0earer. The new entry allows the P=G? to route user plane P8s between the "=G? and the pac#et data

networ#- and to start charin. The way the P=G? handles 1harin 1haracteristics that it may have received isdefined in T" 3*.*9, J;;K.

The P8' G? returns a 1reate "ession /esponse (P8' G? ddress for the user plane- P8' G? T2&8 of the

user plane- P8' G? T2&8 of the control plane- P8' Type- P8' ddress- 2P" 0earer &d- 2P" 0earer Eo"-Protocol 1onfiuration Options- 1harin &d- Prohibit Payload 1ompression- P' /estriction- 1ause- M" &nfo1hane /eportin ction ("tart) (if the P8' G? decides to receive 2$s location information durin the

session)- 1"G &nformation /eportin ction ("tart) (if the P8' G? decides to receive 2$s ser 1"Ginformation durin the session)- P8' 1harin Pause 2nabled indication (if P8' G? has chosen to enable the

function)- P'=M0/) messae to the "ervin G?. The P8' G? ta#es into account the received P8' type-

the 8ual ddress 0earer 7la and the policies of operator when the P8' G? selects the P8' type to be used as

follows. &f the received P8' type is &Pv;v: and both &Pv; and &Pv: addressin are possible in the P8' but the8ual ddress 0earer 7la is not set- or only sinle &P version addressin for this P' is possible in the P8'-

the P8' G? selects a sinle &P version (either &Pv; or &Pv:). &f the received P8' type is &Pv; or &Pv:- the P8'G? uses the P8' type if it is supported in the P8'- otherwise an appropriate error cause will be returned. The

P8' G? allocates a P8' ddress accordin to the selected P8' Type &f the P8' G? has selected a P8'type different from the received P8' Type- the P8' G? indicates toether with the P8' type &2 a reason

cause to the 2 why the P8' type has been modified- as described in clause 9.3.,.,. P8' ddress may containan &Pv; address for &Pv; andAor an &Pv: prefi and an &nterface &dentifier. &f the P8' has been confiured by the

operator so that the P8' addresses for the reDuested P' shall be allocated by usae of 8@1Pv; only- or if theP8' G? allows the 2 to use 8@1Pv; for address allocation accordin to the ddress llocation Preference

received from the 2- the P8' ddress shall be set to +.+.+.+- indicatin that the &Pv; address shall beneotiated by the 2 with after completion of the 8efault 0earer ctivation procedure. 7or eternal P8'

addressin for &Pv:- the P8' G? obtains the &Pv: prefi from the eternal P8' usin either /8&" or8iameter client function. &n the P8' ddress field of the 1reate "ession /esponse- the P8' G? includes the

&nterface &dentifier and &Pv: prefi. The P8' G? sends /outer dvertisement to the 2 after default bearerestablishment with the &Pv: prefi information for all cases. &f the P8' address is contained in the 1reate

"ession /eDuest- the P8' G? shall allocate the &Pv; address andAor &P: prefi contained in the P8' address tothe 2. &f @andover &ndication indicates L@andoverL- the P8' ddress &nformation shall contain the same &P

address the 2 obtained durin P8' connectivity establishment over the non=3GPP access. The P8' G?

derives the 01M based on the '/" and operator policy. The P8' G? derives whether the etended T7Tfilter format is to be used based on the 2T7T- 2T7T' received from the P1/7 and operator policy. Protocol

1onfiuration Options contains the 01M- 2T7T' as well as optional P8' parameters that the P=G? may

transfer to the 2. These optional P8' parameters may be reDuested by the 2- or may be sent unsolicited bythe P=G?. Protocol 1onfiuration Options are sent transparently throuh the MM2.

?hen the @andover &ndication is present- the P8' G? does not yet send downlin# pac#ets to the "=G?I thedownlin# path is to be switched at step ,3a.

&f the P8' G? is an 5=G?- it does not forward downlin# pac#ets to the "=G?. The pac#ets will only beforwarded to the @e'0 at step ,+ via the direct user plane path for 5ocal &P ccess.

:. The "ervin G? returns a 1reate "ession /esponse (P8' Type- P8' ddress- "ervin G? address for ser

Plane- "ervin G? T2&8 for ser Plane- "ervin G? T2&8 for control plane- 2P" 0earer &d- 2P" 0earer Eo"-

P8' G? address and T2&8 (GTP=based "9A">) or G/2 #ey (PM&P=based "9A">) at the P8' G? for uplin#traffic- Protocol 1onfiuration Options- Prohibit Payload 1ompression- P' /estriction- 1ause- M" &nfo

1hane /eportin ction ("tart)- 1"G &nformation /eportin ction ("tart)- P'=M0/) messae to theMM2. The 85 T7T for PM&P=based "9A"> is obtained from interaction between the "ervin G? and the P1/7

as described in clause 9.:., of T" *3.;+* J*K- when P11 is deployedI otherwise- the 85 T7T &2 is wildcarded-matchin any downlin# traffic. &f the 2 indicates the /eDuest Type as L@andoverL- this messae also serves as

an indication to the MM2 that the "9A"> bearer setup and update has been successful. t this step the GTPtunnel(s) over "9A"> are established.

<. &f an P' /estriction is received- then the MM2 shall store this value for the 0earer 1ontet and the MM2 shallchec# this received value with the stored value for the Maimum P' /estriction to ensure there are no

conflicts between values. &f the conseDuence of this chec# results in the P8' connectivity bein rejected- theMM2 shall initiate a 0earer 8eactivation and return an appropriate error cause. &f the P8' 1onnectivity /eDuest

is accepted- the MM2 shall determine a (new) value for the Maimum P' /estriction. &f there is no previouslystored value for Maimum P' /estriction- then the Maimum P' /estriction shall be set to the value of thereceived P' /estriction.

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The P=G? shall inore Maimum P' restriction if the reDuest includes the 2merency P'.

7or emerency service MM2 shall not deactivate bearer(s)- if present- to maintain valid P' restriction

combination.

&f the M" &nfo 1hane /eportin ction ("tart) andAor the 1"G &nformation /eportin ction ("tart) are

received for this bearer contet- then the MM2 shall store this for the bearer contet and the MM2 shall report to

that P=G? via the "=G? whenever a 2$s 5ocation &nformation andAor ser 1"G &nformation chane occursthat meets the P=G? reDuest- as described in clause ,9.,.,a of T" *3.+:+ J<K.

The MM2 may need to modify the 2 M0/- which has been assined to the e'ode0- based on the subscribed

2=M0/ and the updated set of P'=M0/s in use. The principles to determine the 2=M0/ aredescribed in clause ;.<.3.

The MM2 sends P8' 1onnectivity ccept (P'- P8' Type- P8' ddress- 2P" 0earer &d- "essionManaement /eDuest- Protocol 1onfiuration Options) messae to the 2. This messae is contained in an

",MM2 control messae 0earer "etup /eDuest (2P" 0earer Eo"- 2=M0/- P8' 1onnectivity ccept- ",=T2&8) to the e'ode0. This ", control messae includes the T2&8 at the "ervin G? used for user plane and the

address of the "ervin G? for user plane. &n addition- if the P8' connection is established for 5ocal &P ccess-the correspondin ", control messae includes a 1orrelation &8 for enablin the direct user plane path between

the @e'0 and the 5=G?. &f the P8' connection is established for "&PTO at the 5ocal 'etwor# with 5=G?function collocated with the (@)e'0- the correspondin ", control messae includes a "&PTO 1orrelation &8 forenablin the direct user plane path between the (@)e'0 and the 5=G?.

'OT2 ;H &n this release of the 3GPP specification the 1orrelation &8 and "&PTO 1orrelation &8 is set eDual to the

user plane P8' G? T2&8 (GTP=based "9) or G/2 #ey (PM&P=based "9) that the MM2 has received instep :.

&n the P8' 1onnectivity ccept messae- the MM2 does not include the &Pv: prefi within the P8' ddress.The MM2 includes the P'=M0/ and the 2P" 0earer Eo" parameter E1& into the "ession Manaement

/eDuest. 7urthermore- if the 2 has T/' or G2/' capabilities and the networ# supports mobility toT/' or G2/'- the MM2 uses the 2P" bearer Eo" parameters to derive the correspondin P8P contet

parameters Eo" 'eotiated (/CC Eo" profile)- /adio Priority- Pac#et 7low &d and T& and includes them in the

"ession Manaement /eDuest. &f the 2 indicated in the 2 'etwor# 1apability that it does not support 0"" pac#et flow procedures- then the MM2 shall not include the Pac#et 7low &d. MM2 will not send the ", 0earer

"etup /eDuest messae until any outstandin ", 0earer "etup /esponse messae for the same 2 has beenreceived or timed out. &f the P'=M0/ has chaned the MM2 may update the 2=M0/ if appropriate.

&f the MM2 or P8' G? has chaned the P8' Type- an appropriate reason cause shall be returned to the 2 as

described in clause 9.3.,.,.

>. The e'ode0 sends //1 1onnection /econfiuration to the 2 includin the P8' 1onnectivity ccept

messae. The 2 shall store the Eo" 'eotiated- /adio Priority- Pac#et 7low &d and T&- which it received in the"ession Manaement /eDuest &2- for use when accessin via G2/' or T/'. The 2 may provide 2P"

0earer Eo" parameters to the application handlin the traffic flow. The application usae of the 2P" 0earer Eo"is implementation dependent. The 2 shall not reject the //1 1onnection /econfiuration on the basis of the

2P" 0earer Eo" parameters contained in the "ession Manaement /eDuest.

&f the 2 receives an &Pv; address set to +.+.+.+- it may neotiate the &Pv; address with 8@1Pv; as specified in

T" *C.+:, J3>K- &f the 2 receives an &Pv: interface identifier- it may wait for the /outer dvertisement fromthe networ# with the &Pv: prefi information or it may send a /outer "olicitation if necessary.

'OT2 9H The &P address allocation details are described in clause 9.3., on L&P ddress llocationL.

C. The 2 sends the //1 1onnection /econfiuration 1omplete to the e'ode0.

,+. The e'ode0 send an ",=P 0earer "etup /esponse to the MM2. The ",=P messae includes the T2&8 of the

e'ode0 and the address of the e'ode0 used for downlin# traffic on the ", reference point.

&f the 1orrelation &8 or "&PTO 1orrelation &8 is included in the 0earer "etup /eDuest- the e'ode0 shall use theincluded information to establish a direct user plane path to the 5=G? and forward uplin# data for 5ocal &P

ccess or "&PTO at the 5ocal 'etwor# with 5=G? function collocated with the (@)e'0 accordinly.

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,,. The 2 '" layer builds a P8' 1onnectivity 1omplete messae includin 2P" 0earer &dentity. The 2 thensends a 8irect Transfer (P8' 1onnectivity 1omplete) messae to the e'ode0.

,*. The e'ode0 sends an plin# '" Transport (P8' 1onnectivity 1omplete) messae to the MM2.

fter the P8' 1onnectivity ccept messae and once the 2 has obtained a P8' ddress &nformation- the 2

can then send uplin# pac#ets towards the e'ode0 which will then be tunnelled to the "ervin G? and P8'

G?. &f the 2 reDuested for a dual address P8' type (&Pv;v:) to a iven P' and was ranted a sinle addressP8' type (&Pv; or &Pv:) by the networ# with a reason cause indicatin that only sinle &P version per P8'

connection is allowed- the 2 should reDuest for the activation of a parallel P8' connection to the same P'

with a sinle address P8' type (&Pv; or &Pv:) other than the one already activated. &f the 2 receives no reasoncause in step > in response to a &Pv;v: P8' type and it receives an &Pv: &nterface &dentifier apart from the &Pv;

address or +.+.+.+ in the P8' ddress field- it considers that the reDuest for a dual address P8' was successful.&t can wait for the /outer dvertisement from the networ# with the &Pv: prefi information or it may send

/outer "olicitation if necessary.

,3. pon reception of the 0earer "etup /esponse messae in step ,+ and the P8' 1onnectivity 1omplete messae

in step ,*- the MM2 sends a Modify 0earer /eDuest (2P" 0earer &dentity- e'ode0 address- e'ode0 T2&8-@andover &ndication) messae to the "ervin G?. &f /eDuest Type indicates LhandoverL- the @andover

&ndication is also included.

,3a. &f the @andover &ndication is included in step ,3- the "ervin G? sends a Modify 0earer /eDuest (@andover&ndication) messae to the P8' G? to prompt the P8' G? to tunnel pac#ets from non 3GPP &P access to

3GPP access system and immediately start routin pac#ets to the "ervin G? for the default and any dedicated

2P" bearers established.

,3b. The P8' G? ac#nowledes by sendin Modify 0earer /esponse to the "ervin G?.

,;. The "ervin G? ac#nowledes by sendin Modify 0earer /esponse (2P" 0earer &dentity) to the MM2. The"ervin G? can then send its buffered downlin# pac#ets.

,9. fter the MM2 receives Modify 0earer /esponse in step ,;- if /eDuest type does not indicate handover and an

2P" bearer was established and if the subscription data indicates that the user is allowed to perform handover tonon=3GPP accesses and if this is the first P8' connection associated with this P' and if the MM2 selected a

P8' G? that is different from the P8' G? identity which was previously indicated by the @"" in the P8'

subscription contet- the MM2 shall send a 'otify /eDuest includin the P8' G? address and the P' to the@"" for mobility with non=3GPP accesses. The messae shall include information that identifies the P5M' in

which the P8' G? is located.

&f the /eDuest Type of the 2 reDuested connectivity procedure indicates L2merencyL- the MM2 shall not send

any 'otify /eDuest to the @"".

,:. The @"" stores the P8' G? identity and the associated P'- and sends a 'otify /esponse to the MM2.

'OT2 :H 7or handover from non=3GPP access- the P8' G? initiates resource allocation deactivation procedure inthe trustedAuntrusted non=3GPP &P access as specified in T" *3.;+* J*K.

!.10.3 UE "r MME reDueste# P* #isc"''ecti"'

The 2 or MM2 reDuested P8' disconnection procedure for an 2=T/' is depicted in fiure 9.,+.3=,. The procedure allows the 2 to reDuest for disconnection from one P8'. 0earers includin the default bearer of this P8'

shall be deleted durin this procedure. The procedure also allows the MM2 to initiate the release of a P8' connection.

This procedure is also used as part of the "&PTO function when the MM2 determines that G? relocation is desirable. &n

this situation the MM2 deactivates the P8' connection(s) relevant to "&PTO=allowed P'(s) usin the LreactivationreDuestedL cause value- and the 2 should then re=establish those P8' connection(s).

'OT2 ,H The deactivation with reactivation reDuested does not wor# with pre=/el=C 5T2 2s.

&t shall be possible to confiure the MM2 to deactivate a P8' connectionfor P8' G? relocation due to "&PTO above

/'- only when 2 is in 21M=&852 mode or durin a Trac#in rea pdate procedure without established /0(s).

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This procedure is not used to terminate the last P8' connection. The 2 uses the 2=initiated 8etach procedure inclause 9.3.>.* to disconnect the last P8' connection. The MM2 uses the MM2=initiated 8etach procedure in

clause 9.3.>.3 to release the last P8' connection.



(A)

. eacti5ate Cearer Re uest

!. :P-+&* Sessi"' Ter6i'ati"'





a. RR+ +"''ecti"' Rec"'igurati"' +"6%$ete

. eacti5ate Cearer Res%"'se

1a. P* isc"''ecti"' ReDuest

,b P8' disconnection trier

10a. irect Tra'ser

10. eacti5ate EPS Cearer +"'te/t &cce%t

0i1ure +'%'3$%2 ! or 88 re:uested P=" disconnection

'OT2 *H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps 3- ; and 9 concern GTP

based "9A">.

,. The procedure is triered by either step ,a or step ,b.

,a. The 2 initiates the 2 reDuested P8' disconnection procedure by the transmission of a P8'8isconnection /eDuest (50&) messae. The 50& indicates the default bearer associated with the P8'

connection bein disconnected. &f the 2 was in 21M=&852 mode- this '" messae is preceded by the"ervice /eDuest procedure.

,b. The MM2 decides to release the P8' connection. This may be e.. due to chane of subscription- lac# ofresources- due to "&PTO in case the P8' connection serves a "&PTO=allowed P' or on receivin a PG?

/estart 'otification from the "ervin G? as specified in T" *3.++< J<*K. &f the 2 is in 21M=&852 state

and the reason for releasin P8' connection is Lreactivation reDuestedL e.. due to "&PTO- the MM2initiates pain via 'etwor# Triered "ervice /eDuest procedure in clause 9.3.;.3 from step 3a onwards inorder to inform 2 of the reDuest.

*. The 2P" 0earers in the "ervin G? for the particular P8' connection are deactivated by the MM2 by sendin8elete "ession /eDuest (1ause- 50&- ser 5ocation &nformation (21G&)) to the "ervin G?. This messae

indicates that all bearers belonin to that P8' connection shall be released. &f the 2 Time None has chaned-the MM2 includes the 2 Time None &2 in this messae.

3. The "ervin G? sends 8elete "ession /eDuest (1ause- 50&- ser 5ocation &nformation (21G&)) to the P8'G?. The "=G? also includes ser 5ocation &nformation &2 andAor 2 Time None &2 if it is present in step *.

;. The P8' G? ac#nowledes with 8elete "ession /esponse.

9. The P8' G? employs the P127=initiated &P=1' "ession Termination procedure as defined in T" *3.*+3 J:Kto indicate to the P1/7 that the &P=1' session is released if P1/7 is applied in the networ#. &f reDuested the

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P8' G? indicates ser 5ocation &nformation andAor 2 Time None &nformation to the P1/7 as defined inT" *3.*+3 J:K.

:. The "ervin G? ac#nowledes with 8elete "ession /esponse.

<. &f the 2 is in 21M &852 state and the P8' disconnection is decided by the MM2- the MM2 shall delete the

correspondin contets of the P8' connection locally- steps < to ,+b are s#ipped ecept if the MM2 has decided

to restore certain P8' connections as specified in T" *3.++< J<*K or for other reasons e.. "&PTO. The MM2initiates the deactivation of all 0earers associated with the P8' connection to the e'ode0 by sendin the

8eactivate 0earer /eDuest messae to the e'ode0. The MM2 shall re=calculate the 2=M0/ (see

clause ;.<.3). This ",=P messae carries the list of 2P" bearers to be released- the new 2=M0/- and a '"8eactivate 2P" 0earer 1ontet /eDuest (50&) messae. The MM2 builds a '" messae 8eactivate 2P"

0earer 1ontet /eDuest includin the 2P" 0earer &dentity- and includes it in the ",=P 8eactivate 0earer/eDuest messae.

&f the networ# wants to trier G? relocation (e.. for "&PTO)- the '" messae 8eactivate 2P" 0earer1ontet /eDuest includes the reDuest for reactivation of the same P8' connection via the same P' by the 2.

&f the MM2 released the P8' connection due to failed bearer set up durin handover- the 2 and the MM2deactivate the failed contets locally without peer=to peer 2"M sinallin.

'OT2 3H &f the 2 is in 21M=&852 state and the P8' disconnection is decided by the MM2- the 2P" bearer stateis synchroni!ed between the 2 and the networ# at the net 21M=&852 to 21M=1O''21T28

transition (e.. "ervice /eDuest or T procedure).

>. The e'ode0 sends the //1 1onnection /econfiuration messae includin the correspondin bearers to be

released and the '" 8eactivate 2P" 0earer 1ontet /eDuest (50&) messae to the 2.

Ca. The 2 releases all resources correspondin to the P8' connection and ac#nowledes this by sendin the //1

1onnection /econfiuration 1omplete messae to the e'ode0.

Cb. The e'ode0 sends an ac#nowledement of the deactivation to the MM2.

,+a. The 2 '" layer builds a 8eactivate 2P" 0earer 1ontet ccept messae. The 2 then sends a 8irect

Transfer (8eactivate 2P" 0earer 1ontet ccept) messae to the e'ode0.

&f the 8eactivate 2P" 0earer 1ontet /eDuest messae from the MM2 indicated reactivation reDuested- the 2starts the 2 initiated P8' connection reDuest procedure as specified in clause 9.,+.* by usin the same P' of

the released P8' connection.

,+b. The e'ode0 sends an plin# '" Transport (8eactivate 2P" 0earer 1ontet ccept) messae to the MM2.

The MM2 determines the Maimum P' /estriction for the remainin P8' connections and stores this new value forthe Maimum P' /estriction.

!.10.4 MME triggere# Ser5i'g GA re$"cati"'

The MM2 triered "ervin G? relocation procedure for 2=T/' is depicted in fiure 9.,+.;=,. The procedureallows the MM2 to trier "ervin G? relocation due to events other than those described in the mobility scenarios

(see clause 9.3.3., and clause 9.9.,). "uch scenario eists durin the establishment of a "&PTO at local networ# P8'connection with stand=alone G? or durin the establishment of a "&PTO above /' P8' connection.

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U%$i'B#"' $i'B #ata e"re S-GA re$"cati"'


3a. M"#i; Cearer ReDuest

3. M"#i; Cearer Res%"'se 4. +reate Sessi"' Res%"'se

!. Ser5i'g GA Re$"cati"' *"ticati"'&+

U%$i'B $i'B #ata

"' $i'B #ata

a. e$ete Sessi"' ReDuest


1. MME #eter6i'es

the Ser5i'g GAre$"cati"' 'ee#s t"e %er"r6e#

MME 8$#Ser5i'g GA

P* GA e*"#eC UE *eSer5i'g GA

0i1ure +'%'$%2 88 tri11ered Servin1 GB relocation

,. The "ervin G? relocation procedure may be triered by the MM2 due to events that may benefit from a"ervin G? relocation other than those described in the mobility events scenarios.

*. &f the MM2 determines that the "ervin G? is to be relocated then it selects a new "ervin G? accordin to

clause ;.3.>.*. The MM2 sends a 1reate "ession /eDuest (bearer contet(s) with P8' G? addresses and T2&8s(for GTP=based "9A">) or G/2 #eys (for PM&P=based "9A">) at the P8' G?(s) for uplin# traffic- e'ode0

address(es) and T2&8s for downlin# user plane for the eistin 2P" bearers- the Protocol Type over "9A">-

"ervin 'etwor#) messae per P8' connection to the new "ervin G?. The new "ervin G? allocates the"=G? addresses and T2&8s for the uplin# traffic on ", reference point (one T2&8 per bearer). The Protocol

Type over "9A"> is provided to "ervin G? which protocol should be used over "9A"> interface. &f the P8'G? reDuested 2$s location info- the MM2 also includes the ser 5ocation &nformation &2 in this messae. &f

the P8' G? reDuested 2$s ser 1"G information (determined from the 2 contet)- the MM2 includes theser 1"G &nformation &2 in this messae if the ser 1"G &nformation has chaned.

3. The new "ervin G? assins addresses and T2&8s (one per bearer) for downlin# traffic from the P8' G?. The"ervin G? allocates 85 T2&8s on "9A">. &t sends a Modify 0earer /eDuest ("ervin G? addresses for user

plane and T2&8(s)- "ervin 'etwor#) messae per P8' connection to the P8' G?(s). The "=G? also includesser 5ocation &nformation &2 andAor 2 Time None &2 andAor ser 1"G &nformation &2 if it is present in step *.

The P8' G? updates its contet field and returns a Modify 0earer /esponse (1harin &d- M"&"8'- etc.)messae to the "ervin G?. The M"&"8' is included if the P8' G? has it stored in its 2 contet. The P8'

G? starts sendin downlin# pac#ets to the new G? usin the newly received address and T2&8s. These

downlin# pac#ets will use the new downlin# path via the new "ervin G? to the e'ode0. This step is performed for all connected P8'=G?s for that specific 2.

;. The new "ervin G? sends a 1reate "ession /esponse ("ervin G? addresses and uplin# T2&8(s) for user

plane) messae bac# to the MM2. The MM2 starts a timer- to be used in step :.

9. The MM2 sends the "ervin G? /elocation 'otification ("ervin G? addresses and uplin# T2&8(s) for user

plane) messae to e'ode0. The e'ode0 starts usin the new "ervin G? address(es) and T2&8(s) forforwardin subseDuent uplin# pac#ets.

2ditor$s 'oteH&t belons to "tae 3 domain whether an eistin ",=P messae or a new messae need to be used

for step 9. This specification will be alined accordin to "tae 3 specification once available.

:. ?hen the timer has epired after step ;- the MM2 releases the bearer(s) in the old "ervin G? by sendin a8elete "ession /eDuest messae (1ause- Operation &ndication). The operation &ndication fla is not set- that

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indicates to the old "ervin G? that the old "ervin G? shall not initiate a delete procedure towards the P8'G?. The old "ervin G? ac#nowledes with 8elete "ession /esponse messaes.

&f the "ervin G? relocation procedure towards a new "ervin G? fails- based on operator policy- the MM2 should o bac# to the old "ervin G? and disconnects the affected P8' connections (e.. "&PTO at local networ#) that are no

loner allowed to remain connected.

!.11 UE +a%ai$it; 7a'#$i'g

!.11.1 Ge'era$

The 2 1apability information is made up of the 2 /adio 1apability information and the 2 1ore 'etwor#1apability information.

!.11.2 UE Ra#i" +a%ai$it; 7a'#$i'g

The 2 /adio 1apability information contains information on /Ts that the 2 supports (e.. power class- freDuency

bands- etc). 1onseDuently- this information can be sufficiently lare (e.. U9+ octets) that it is undesirable to send itacross the radio interface at every transition from 21M=&852 to 21M=1O''21T28. To avoid this radio overhead-the MM2 stores the 2 1apability information durin 21M=&852 state and the MM2 shall- if it is available- send its

most up to date 2 /adio 1apability information to the 2=T/' in the ", interface &'&T&5 1O'T2FT "2TP/2E2"T messae unless the 2 is performin an ttach procedure or a Trac#in rea pdate procedure for the

Lfirst T followin G2/'AT/' ttachL or for a L2 radio capability updateL.

'OT2 ,H 7or a G2/'AT/'A2=T/' capable 2- the 2 /adio 1apability information that the MM2

stores is broadly eDuivalent to the combination of the M" /adio ccess capability sent in theT" *;.++> J;<K ttach /eDuest or / /eDuest messaes plus the 2=T/' &nter /T @andover

information sent in the T" *;.++> J;<K ttach 1omplete or / 1omplete messaes. The T/' /adio1apabilities are ecluded owin to issues with the handlin of dynamic MT" security parameters.

&f the 2 is performin an ttach procedure or a Trac#in rea pdate procedure for the Lfirst T followinG2/'AT/' ttachL or for L2 radio capability updateL- the MM2 shall delete (or mar# as deleted) any 2 /adio

1apability information that it has stored- and- if the MM2 sends an ", interface &'&T&5 1O'T2FT "2TP/2E2"T or 2 /8&O 1P0&5&T MT1@ /2E2"T messae durin that procedure- the MM2 shall not send

any 2 /adio 1apability information to the 2=T/' in that messae. This triers the 2=T/' to reDuest the 2/adio 1apability from the 2 and to upload it to the MM2 in the ", interface 2 1P0&5&T &'7O &'8&1T&O'

messae. The MM2 stores the 2 /adio 1apability information- and include it in further &'&T&5 1O'T2FT "2TP/2E2"T or 2 /8&O 1P0&5&T MT1@ /2E2"T messaes in other cases than ttach procedure-

Trac#in rea pdate procedure for the Lfirst T followin G2/'AT/' ttachL and L2 radio capability

updateL procedure.

&f the 2 is performin a "ervice /eDuest (or other) procedure and the MM2 does not have 2 /adio 1apabilityinformation available (or it is available- but mar#ed as LdeletedL)- then the MM2 sends an ", interface &'&T&5

1O'T2FT "2TP /2E2"T messae to the 2=T/' without any 2 /adio 1apability information in it. Thistriers the 2=T/' to reDuest the 2 /adio 1apability from the 2 and upload it to the MM2 in the ", interface

2 1P0&5&T &'7O &'8&1T&O' messae.

'OT2 *H This use of the &'&T&5 1O'T2FT "2TP /2E2"T messae means that for a sinallin only

procedure such as a periodic Trac#in rea pdate- the 2 /adio 1apability would not be sent to the2=T/'.

'OT2 3H &f a Lfirst T followin G2/'AT/' ttachL Trac#in rea pdate is performed durin 21M=

1O''21T28 mode- e.. after an inter /T handover- no &'&T&5 1O'T2FT "2TP /2E2"T is

sent and the 2 /adio 1apability information in the MM2 will remain deleted until the net 21M=&852to 21M=1O''21T28 transition (or later- e.. if the net activity from the 2 is another Trac#in rea

pdate).

The 2 /adio 1apability is not provided directly from one 1' node to another. &t will be uploaded to the MM2 whenthe 2=T/' reDuests the 2 /adio 1apability information from the 2.

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8urin handover via the MM2 (both intra /T and inter /T)- the radio capability information for the source andtaret 3GPP /Ts (with the possible eception of T/') are transferred in the Lsource to taret transparent

containerL. &nformation on additional 3GPP /Ts is optionally transferred in the Lsource to taret transparentcontainerL. Transfer of the radio capability information related to the source andAor additional /Ts is beneficial as it

avoids the need for the taret /T to retrieve the information from the 2 prior to a subseDuent inter=/T handover.

Owin to issues with dynamic T/' security parameters- special rules apply to the handlin of the T/' radiocapability information at inter=/T handover (see e.. the @andoverPreparation&nformation messae description inT" 3:.33, J3<K and the usae of the P" @andover 1omplete c# messae in T" ;3.,*C J>K and T" ;>.+,> J;*K)

To allow for the addition of future radio technoloies- freDuency bands- and other enhancements- the MM2 shall storethe 2 /adio 1apability &nformation even if it is larer than specified in T" 3:.33, J3<K- up to a maimum si!e of

9,+ octets.

'OT2 ;H The 9,+ octet value comes from the information element encodin rules described in T" *;.++< J;9K and

the assumption that the information contained within this 2 /adio 1apability &nformation 2lementstored by the MM2 is the eDuivalent of information sinalled in two information elements in the G2/'

'" sinallin for the case of G2/' to 2=T/' P" handover.

The 2=T/' stores the 2 /adio 1apability information- received in the ", interface &'&T&5 1O'T2FT "2TP

/2E2"T messae or obtained from the 2- for the duration of the //1 connection for that 2. 0efore any handoverattempt from 2=T/' to T/'- the 2=T/' retrieves the 2$s T/' /adio 1apabilities from the 2.

&f the 2$s non=T/' 2 /adio 1apability information chanes while in 21M=&852 state (includin cases of beinin G2/'AT/' coverae)- the 2 shall perform a Trac#in rea pdate indicatin L2 radio capability updateL

when it net returns to 2=T/' coverae.

'OT2 9H &n this release of the specifications- L2 radio capability updateL is only supported for chanes of

G2/' radio capabilities in 21M=&852. ny chane in the 2$s 2=T/' capabilities reDuires the2 to detach and then re=attach to the system.

The MM2 may also reDuest for Boice "upport Match &nformation. &f reDuested- the e'0 then derives and provides an

indication to the MM2 whether the 2 radio capabilities are compatible with the networ# confiuration (e.. whetherthe 2 supports the freDuency bands that the networ# may rely upon for providin LfullL P" voice coverae or whether

the 2 supports the "/B11 confiuration of the networ# e.. 2=T/' to G2/') as defined in clause 9.3.,;.

!.11.3 UE +"re *et"rB +a%ai$it;

The 2 1ore 'etwor# 1apability is split into the 2 'etwor# 1apability &2 (mostly for 2=T/' access related corenetwor# parameters) and the M" 'etwor# 1apability &2 (mostly for T/'AG2/' access related core networ#

parameters) and contains non radio=related capabilities- e.. the '" security alorithms etc. 0oth the 2 'etwor#1apability and the M" 'etwor# 1apability are transferred between 1' nodes at MM2 to MM2- MM2 to "G"'- "G"'

to "G"'- and "G"' to MM2 chanes.

&n order to ensure that the 2 1ore 'etwor# 1apability information stored in the MM2 is up to date (e.. to handle the

situation when the "&M is moved into a different device while out of coverae- and the old device did not send the

8etach messaeI and the cases of inter=/T Trac#in rea pdate)- the 2 shall send the 2 1ore 'etwor#1apability information to the MM2 durin the ttach and non=periodic Trac#in rea pdate procedure within the '" messae.

The MM2 shall store always the latest 2 1ore 'etwor# 1apability received from the 2. ny 2 1ore 'etwor#

1apability that an MM2 receives from an old MM2A"G"' is replaced when the 2 provides the 2 1ore 'etwor#

1apability with ttach and the Trac#in rea pdate sinallin. The MM2 shall remove the stored M" 'etwor#1apability- if M" 'etwor# 1apability is not included in ttach or non=periodic Trac#in rea pdate sinalin e.. 2

is only capable of 2=T/'.

&f the 2$s 2 1ore 'etwor# 1apability information chanes (in either 21M=1O''21T28 or in 21M=&852 state

(includin cases of bein in G2/'AT/' coverae and havin &"/ activated))- the 2 shall perform a Trac#inrea pdate ($type$ different to $periodic$) when it net returns to 2=T/' coverae = see clause 9.3.3.+.

To allow for the addition of future features- the MM2 shall store the 2 'etwor# 1apability and the M" 'etwor#1apability even if either or both is larer than specified in T" *;.++> J;<KAT" *;.3+, J;:K- up to a maimum si!e of

3* octets for each &2.

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!.12 Aar'i'g 6essage #e$i5er;

!.12.1 Ge'era$

?arnin messae delivery is similar to 1ell 0roadcast "ervice defined in T" *3.+;, J;>K- it permits a number of

unac#nowleded ?arnin messaes to be broadcast to 2s within a particular area.

The maimum si!e of the ?arnin messae for 2=T/' is different from that of T/'AG2/'.

?hen ",=fle is used- the e'ode0 may receive duplicated ?arnin messaes.

7or details on the ?arnin system messae delivery- see T" *3.+;, J;>K.

!.12.2 V"i#

!.12.3 V"i#

!.13 isc"'ti'u"us Rece%ti"' a'# UE S%eciic RO Para6eterha'#$i'g

8urin the ttach procedure in 2=T/'- T/' andAor G2/'- the 2 sinals its 2 "pecific 8/F Parametersto the 1ore 'etwor# (MM2 in the 2=T/' case and "G"' in T/'AG2/' case).

&n 2=T/' and T/'- the 2 may sinal that it wishes to use the 8/F cycle lenth broadcast in the /'$s"ystem &nformation. lternatively- the 2 can propose a 8/F cycle lenth. The MM2 shall accept the value proposed

by the 2.

&n each ", interface Pae /eDuest messae- the MM2 shall send the 2=T/' relevant information from the 2

"pecific 8/F Parameters (to help determine the 8/F cycle lenth) and information derived from the &M"& (whichdefines when the 2 will be awa#e from its sleep mode). 8etails are specified in T" 3:.3+; J3;K.

'OT2 ,H To ease bac#ward compatibility with Pre=/elease > "G"'s- the T/' and 2=T/' 8/F cyclelenths are encoded in the same field within the T" *;.++> J;<K 8/F parameter information element.

t MM2 to MM2- MM2 to "G"' and "G"' to MM2 mobility- the 2 "pecific 8/F Parameters are sent from theold 1' node to the new 1' node as part of the MM contet information and should not be sent by the 2 in the

Trac#in rea pdate messae.

'OT2 *H it is assumed that all "G"'s are /elease CC or newer and hence support storae of the /elease $CC

encodin of the T" *;.++> J;<K 8/F parameter information element.

&f a 1' node receives 2 "pecific 8/F Parameters in a dedicated messae from the 2 (e.. in a Trac#in rea

pdate or ttach messae)- then the 1' node updates any stored information with the information supplied by the 2

and uses the 2 provided information in preference to any information that miht be received from another 1' nodedurin the same procedure.

&f the 2 wishes to alter its G2/' or T/'A2=T/' 2 "pecific 8/F Parameters while in 2=T/'- then it

shall send a Trac#in rea pdate /eDuest messae to the MM2 containin its new 2 "pecific 8/F Parameters. &f&"/ had been activated for the 2- then the 2 shall deactivate &"/ by settin its T&' to LGT&L so that the 2

performs a /outin rea pdate when it net enters G2/'AT/' coverae. ?hen the 2 performs that /outinrea pdate- the "G"' will receive the updated 8/F parameters within the MM contet information sent by the MM2

and hence the 2 should not include them aain in the /outin rea pdate /eDuest messae.

&f the 2 wishes to alter its 2=T/'AT/' or G2/' 8/F Parameters while in G2/' or T/' coverae-

then the 2 shall send a /outin rea pdate /eDuest messae to the "G"' containin its new 2 8/F Parameters.&f &"/ has been activated- the 2 shall deactivate &"/ by settin its T&' to LP=TM"&L so that the 2 performs a

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Trac#in rea pdate when it net returns to 2=T/' coverae. ?hen the 2 performs that Trac#in rea pdate-the MM2 will receive the updated 8/F parameters within the MM contet information sent by the "G"' and hence

the 2 should not include them aain in the Trac#in rea pdate messae.

!.14 +"'igurati"' Tra'ser %r"ce#ure

The purpose of the 1onfiuration Transfer is to enable the transfer of information between two e'ode0s at any time via", interface and the 1ore 'etwor#. n eample of application is to echane the e'ode0s &P addresses in order to be

able to use F* interface between the e'ode0s for "elf=Optimi!ed 'etwor#s ("O')- as specified in T" 3:.;,3 J3:K.

!.14.1 &rchitecture Pri'ci%$es "r +"'igurati"' Tra'ser

1onfiuration Transfer between two e'ode0s follows the principles used by /' &nformation Manaement (/&M)

procedures (see clause 9.,9) between T/'- 2=T/' and G2/' i.e. providin a eneric mechanism for theechane of arbitrary information between applications belonin to the /' nodes. @owever 1onfiuration Transfer

is only used for intra=/T 2=T/' information echane whereas /&M procedures are desined for inter=/Tinformation echane. "uch a separate procedure allows avoidin impacts to other /T access systems when

transferred information is added or modified.

The information is transferred via the MM2 core networ# node(s). &n order to ma#e the information transparent for the

1ore 'etwor#- the information is included in an 2=T/' transparent container that includes source and tarete'ode0 addresses- which allows the 1ore 'etwor# nodes to route the messaes. The mechanism is depicted in

fiure 9.,; ,. n eample for such transferred information is the "O' informationas specified in T" 3:.;,3 J3:K.

0i1ure +'%$%2 inter $!TRA" 9onfi1uration Transfer 4asic net#ork architecture

The 2=T/' transparent containers are transferred from the source 2=T/' node to the destination 2=T/'node by use of 1onfiuration Transfer messaes.

n 2'0 1onfiuration Transfer messae is used from the e'ode0 to the MM2 over ", interface- a MM21onfiuration Transfer messae is used from the MM2 to the e'ode0 over ", interface- and a 1onfiuration Transfer

Tunnel messae is used to tunnel the 2=T/' transparent container from a source MM2 to a taret MM2 over the",+ interface.

2ach 1onfiuration Transfer messae carryin the 2=T/' transparent container is routed and relayed independently

by the core networ# node(s). ny relation between messaes is transparent for the MM2- i.e. a reDuestAresponseechane between applications- for eample "O' applications- is routed and relayed as two independent messaes by

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the MM2. n MM2 supportin the 1onfiuration Transfer procedures provides addressin- routin and relayinfunctions.

!.14.2 &##ressi'g, r"uti'g a'# re$a;i'g

!.14.2.1 &##ressi'g

ll the 1onfiuration Transfer messaes contain the addresses of the source and destination /' nodes. n e'ode0 isaddressed by the Taret e'ode0 &dentifier.

!.14.2.2 R"uti'g

The followin description applies to all the 1onfiuration Transfer messaes used for the echane of the 2=T/'transparent container.

The source /' node sends a messae to its MM2 includin the source and destination addresses. The MM2 uses thedestination address to route the messae encapsulated in a GTPv* messae to the correct MM2 via the ",+ interface

(see T" *C.*<; J;3K).

The MM2 connected to the destination /' node decides which /' node to send the messae to- based on the

destination address.

!.14.2.3 Re$a;i'g

The MM2 performs relayin between GTPv* messaes as described in T" *C.*<; J;3K. The MM2 performs relayin

between ", and ",+ messaes as described in T" 3:.;,3 J3:K and T" *C.*<; J;3K.

!.14.2.4 &%%$icati"'s usi'g the +"'igurati"' Tra'ser %r"ce#ures

The /' node applications- which use the 1onfiuration Transfer procedures- are fully transparent for the MM2.

These applications are described in /' specifications. n eample of application is the transfer of informationreDuired for "elf=Optimi!ed 'etwor#s ("O').

!.1! R&* :'"r6ati"' Ma'age6e't (R:M) %r"ce#ures

!.1!.1 Ge'era$

The /' &nformation Manaement (/&M) procedures provide a eneric mechanism for the echane of arbitrary

information between applications belonin to the /' nodes. The /' information is transferred via the MM2 and"G"' core networ# node(s). &n order to ma#e the /' information transparent for the 1ore 'etwor#- the /'

information is included in a /&M container that shall not be interpreted by the 1ore 'etwor# nodes.

The /&M procedures are optional both in the /' and the 1' nodes. 7or the Gb interface the use of /&M procedures isneotiated at startArestart of the Gb lin#. 7or the &u interface there is no neotiation of usin /&M procedures or not at &ulin# startArestart.

The /' information is transferred in /&M containers from the source /' node to the destination /' node by useof messaes. "ource and destination /' nodes can be 2=T/'- T/' or G2/'. 2ach messae carryin the

/&M container is routed and relayed independently by the core networ# node(s). ny relation between messaes istransparent for the MM2A"G"'- i.e. a reDuestAresponse echane between /&M applications- for eample- is routed and

relayed as two independent messaes by the MM2A"G"'.

The interfaces which will be used are the Gb- the &u- the ",- Gn and the "3 interfaces. The /' information in the /&M

container shall be transparent for the 1ore 'etwor#. n MM2 or "G"' supportin the /&M procedures providesaddressin- routin and relayin functions.

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!.1!.2 &##ressi'g, r"uti'g a'# re$a;i'g

!.1!.2.1 &##ressi'g

ll the messaes used for the echane of /' information contain the addresses of the source and destination /'nodes. 0"" is addressed by /outin rea &dentity (/&) S 1ell &dentity (1&) of one of its cells. n e'ode0 is

addressed by the Taret e'ode0 &dentifier. n /'1 is addressed by Global /'1=&d as defined in T" *3.++3 JCK.

!.1!.2.2 R"uti'g

The followin description applies to all the messaes used for the echane of /' information.

The source /' node sends a messae to its MM2 or "G"' includin the source and destination addresses. The"G"'AMM2 uses the destination address to route the messae encapsulated in a GTP messae to the correct

MM2A"G"' via the "3 or Gn interface.

The MM2A"G"' connected to the destination /' node decides which /' node to send the messae to based on the

destination address.

!.1!.2.3 Re$a;i'g

The "G"' performs relayin between 0""GP messaes- /'P messaes and GTP messaes as described in

T" ;>.+,> J;*K- T" *9.;,3 J**K- T" *C.+:+ J,;K and T" *C.*<; J;3K. The MM2 performs relayin between ", and"3AGn messaes as described in T" 3:.;,3 J3:K and T" *C.*<; J;3K A T" *C.+:+ J,;K.

!.1!.3 &%%$icati"'s usi'g the R:M Pr"ce#ures

The /' node applications- which use the /&M procedures- are fully transparent for the MM2 and "G"'. Theseapplications are described in /' specifications. n eample between 2=T/' and G2/' is the 'etwor#

ssisted 1ell 1hane described in T" ;>.+,> J;*K- T" *9.;,3 J**K and T" 3:.;,3 J3:K. n eample between 2=

T/' and T/' is the echane of "O' related information described in T" 3:.;,3 J3:K

!.1 MME-i'itiate# %r"ce#ure "' UE9s +SG 6e6ershi% cha'ge

&f the 2 is in 21M=1O''21T28 state and connected via a 1"G cell and the MM2 detects that the 2$s 1"G

membership to that cell has epired- the MM2 shall send an ",P 2 1O'T2FT MO8&7&1T&O' /2E2"Tmessae to the e'ode0 which includes an indication that the 1"G membership of the 2 has epired. The e'ode0

receivin this indication may initiate a handover to another cell. &f the 2 is not handed over the e'ode0 should initiatethe ", release procedure with an appropriate cause. The MM2 initiates ", release after a confiurable time if the 2 is

not handed over or released by the 1"G cell. &f the 1"G membership epires for a 2 with onoin emerency bearerservice- no indication that the 1"G membership of the 2 has epired is sent to the e'ode0 and the MM2 shall

deactivate all non=emerency P8' connections.

&f the 2 is in 21M=1O''21T28 state and connected via a hybrid cell and the MM2 detects that the 2$s 1"Gmembership to that cell has chaned or epired- and the 1"G &nformation /eportin ction indicates ser 1"G&nformation shall be reported to the P=G? then the MM2 shall modify the last #nown 1"G membership and send a

1hane 'otification messae to the "ervin G? with ser 1"G &nformation to indicate the 1"G membership chane.The "ervin G? shall send the 1hane 'otification messae with the ser 1"G &nformation to the P8' G?. The

MM2 shall also send the ",P 2 1O'T2FT MO8&7&1T&O' /2E2"T messae to the e'ode0 which includesan indication of whether the 2 is a 1"G member. 0ased on this information the e'ode0 may perform differentiated

treatment for 1"G and non=1"G members. MM2 shall release the impacted 5&P P8' connection if the 5&P 1"G

authori!ation data for this 1"G cell is no loner valid due to 2$s 1"G membership chaned or epired.

!.1 7"6e e*"#eC Mu$ticast PacBet "rar#i'g u'cti"'

@ome e'ode0 5=G? should receive and process multicast roup membership report messaes (e.. accordin to/71 33<: J:*K A /71 3>,+ J:3K) sent either by the networ# accessed by 5&P or by the 2. 0ased upon these

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&''e/ &V"i#

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&''e/ CV"i#

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.2.2 *"'-r"a6i'g i'ter"%erati"' sce'ari"

&n the non=roamin scenario the P5M' operates GnAGp *G andAor 3G "G"'s as well as MM2 and "=G? for 2=

T/' access.

&ntra P5M' roamin and inter access mobility between GnAGp *G andAor 3G "G"'s and an MM2A"=G? are enabled

byH

= Gn functionality as specified between two GnAGp "G"'s- which is provided by the MM2- and

= Gn functionality as specified between GnAGp "G"' and GnAGp GG"' that is provided by the P=G?.

ll this Gn functionality is based on GTP version , only.

The architecture for interoperation with GnAGp "G"'s in the non=roamin case is illustrated in 7iure 8.*.*=,.

SGi

G'

G'

S1-MME

P+R

G/

Sa

7SS

S10

UE

GRA"

!TRA"

G'G%

SGS*

$!TRA"

MME

S11

S!

SGA PGA 8%erat"r 9s :P Ser5ices (e.g. :MS, PSS etc.)

R/

Gr

S1u

0i1ure ='&'&$%2 "on$roamin1 Architecture for interoperation #ith GnGp SGS"s

'OT2H &f the /el=< "G"' applies 8irect Tunnel there is a user plane connection between P=G? and T/'.

.3 :'ter"%erati"' %r"ce#ures

.3.1 Ge'era$

The interoperation procedures describe information flows for GnAGp "G"'s and other 2P" networ# elements. llmessaes between GnAGp "G"' and MM2- between GnAGp "G"' and @"" and between GnAGp "G"' and P=G? as

well as the therein contained information elements are the same as specified for the adeDuate T" *3.+:+ J<K procedures

that are between GnAGp "G"'s. These messaes and procedure step descriptions are ta#en from T" *3.+:+ J<K for

eplanatory purposes only. These descriptions are in italic text and shall not be modified by the interoperation procedures. &t cannot be assumed that the messaes and procedure step descriptions that are ta#en from T" *3.+:+ J<K

will be updated when modifications or corrections are performed for T" *3.+:+ J<K. &f there are any discrepancies forthese messaes and procedure step descriptions T" *3.+:+ J<K ta#es precedence. The messaes between the MM2 and

any other node than the GnAGp "G"' as well as the therein contained information elements are the same as specified inthe main body of this technical specification for the inter /T /outin rea pdate procedure. &f there are any

discrepancies for these messaes the descriptions from the main body of this Technical "pecification ta#e precedence.

n operator that has pre=/el=> "G"'s in its networ# should use separate 2P" bearers for &Pv; and &Pv: addressin-

such that both addresses can be maintained when movin to a pre=/el=> "G"' from a /el=> "G"' or MM2 (seeclause 9.3.,). This is confiured into the "G"' and MM2 nodes which set the 8ual ddress 0earer 7la dependin on

whether a 2 may or may not be handed over to a pre=/el=> "G"'- as specified in clauses 9.3.*., and 9.,+.*.

n operator supportin emerency services shall not have pre=/el=C "G"'s in its networ# where a 2 may be handedover.

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.3.2 V"i#

.3.3 MME t" 3G SGS* c"6i'e# har# ha'#"5er a'# SR*Sre$"cati"' %r"ce#ure

The MM2 to 3G GnAGp "G"' 1ombined @ard @andover and "/'" /elocation procedure is illustrated in7iure 8.3.3=,.

ny steps descriptions that are from inter GnAGp "G"'s procedures of T" *3.+:+ J<K are shown as italic text andremain unmodified. &n those step descriptions an M" stands for 2- old "G"' for old MM2 and GG"' for P=G?.

The procedure parts between 2=T/' e'ode0 and 2- and between 2=T/' e'ode0 and MM2 are compliantwith the eDuivalent procedure parts in clause L9.9 @andoverL.

&f emerency bearer services are onoin for the 2- handover to the taret /'1 is performed independent of the@andover /estriction 5ist. The "G"' chec#s- as part of the /outin rea pdate in the eecution phase- if the

handover is to a restricted area and if so "G"' deactivate the non=emerency P8P contet as specified inT" *3.+:+ J<K- clause C.*.;.*.

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TargetR*+

S"urce e*"#eC 8$# MME*e G'G%

SGS* P-GA


4. Re$"cati"' ReDuest


<. 7a'#"5er +"66a'#

!. "rar# Re$"cati"' Res%"'se

4. Re$"cati"' ReDuest &cB'"$e#ge

12. Re$"cati"' etect

MS

13. RR+ 6essage

1. ecisi"' t" %er"r6ha'#"5er t" UTR&*

MS #etecte# ; target R*+

Esta$ish6e't " Ra#i" &ccess Cearers

. "rar#i'g " #ata

14. Re$"cati"' +"6%$ete

1!. "rar# Re$"cati"' +"6%$ete

1. R"utei'g &rea U%#ate

1. U%#ate PP +"'te/t ReDuest

1<. Re$ease Res"urces

1. U%#ate PP +"'te/t Res%"'se

1!. "rar# Re$"cati"' +"6%$ete &cB'"$e#ge

+3

+2

10. 78 r"6 E-UTR&* +"66a'#

Ser5i'gGA

1<. e$ete Sessi"' ReDuest

1<a. e$ete Sessi"' Res%"'se


. +reate :'#irect ata "rar#i'g Tu''e$ Res%"'se

0i1ure ='3'3$%2 88 to 3G SGS" com4ined hard handover and SR"S relocation procedure

,. The source e'ode0 decides to initiate a handover to the taret access networ#- T/' &u mode. t this point both uplin# and downlin# user data is transmitted via the followinH 0earer(s) between 2 and source e'ode0-

GTP tunnel(s) between source e'ode0- "ervin G? and P8' G?.

*. The source e'ode0 sends a @andover /eDuired (",P 1ause- Taret /'1 &dentifier- "ource to Taret

Transparent 1ontainer) messae to the source MM2 to reDuest the 1' to establish resources in the taret /'1and the taret "G"'. The bearers that will be subject to data forwardin (if any) are identified by the new "G"'

in a later step (see step 9 below).

3. The old MM2 sends a 7orward /elocation /eDuest messae (&M"&- Tunnel 2ndpoint &dentifier "inallin- MM

1ontet- P8P 1ontet- Taret &dentification- /' Transparent 1ontainer- /'P 1ause- G1"&) to the new

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"G"'. 7or relocation to an area where &ntra 8omain 1onnection of /' 'odes to Multiple 1' 'odes is used-the old MM2 may have multiple new GnAGp "G"'s for each relocation taret in a pool area- in which case the

old MM2 will select one of them to become the new GnAGp "G"'- as specified in T" *3.*3: J3+K. P8P contetcontains GG"' ddress for ser Plane and plin# T2&8 for 8ata (to this GG"' ddress and plin# T2&8 for

8ata- the "ervin G? and the new "G"' send uplin# pac#ets). t the same time a timer is started on the MMand P8P contets in the old MM2 (see /outin rea pdate procedure in clause L5ocation Manaement

Procedures (&u mode)L). The old MM2 does not set any G1"& fla as the MM2 has no GP/" 1M25"ubscription &nformation. The ",P 1ause received from e'ode0 is indicated as /'P 1ause. The "ource to

Taret Transparent 1ontainer received from e'ode0 is indicated as /' Transparent 1ontainer.

'OT2 ,H The GG"' user plane address and uplin# T2&8 are the old P=G? user plane address and T2&8. The

MM2 maps the 2P" bearer parameters to P8P contets.

4. The new SGSN sends a Relocation Request message (Permanent NAS U !dentit"# $ause# $N %omain

!ndicator# Source RN$ To Target RN$ Transparent $ontainer# RA& To &e Setup' to the target RN$. or each

RA& requested to )e esta)lished# RA&s To &e Setup shall contain in*ormation such as RA& !%# RA& parameters#

Transport +a"er Address# and !u Transport Association. SGSN shall not esta)lish RA&s *or P%P contexts with

maximum )itrate *or uplin, and downlin, o* - ,)its. The list o* RA&s requested )" the new SGSN ma" di**er

*rom list o* RA&s esta)lished in the Source RN$ contained in the Source/RN$ to target RN$ transparent

container. The target RN$ should not esta)lish the RA&s (as identi*ied *rom the Source/RN$ to target RN$

transparent container# Ser0ice 1ando0er related in*ormation' that did not exist in the source RN$ prior to the

relocation. The RA& !% in*ormation element contains the NSAP! 0alue# and the RA& parameters in*ormation

element gi0es the 2oS pro*ile. The Transport +a"er Address is the SGSN Address *or user data# and the !u

Transport Association corresponds to the uplin, Tunnel ndpoint !denti*ier %ata. The new SGSN ma" decide to

esta)lish %irect Tunnel unless it has recei0ed a 3set3 G$S! *lag *rom the old SGSN. !* the new SGSN decides to

esta)lish %irect Tunnel# it pro0ides to the target RN$ the GGSN3s Address *or User Plane and T!% *or Uplin,

data. !* the Access Restriction is present in the context# the Ser0ice 1ando0er related in*ormation shall )e

included )" the target SGSN *or the Relocation Request message in order *or RN$ to restrict the U in

connected mode to hando0er to the RAT prohi)ited )" the Access Restriction.

A*ter all the necessar" resources *or accepted RA&s including the !u user plane are success*ull" allocated# the

target RN$ shall send the Relocation Request Ac,nowledge message (Target RN$ To Source RN$ Transparent

$ontainer# RA&s Setup# RA&s ailed To Setup' to the new SGSN. ach RA& to )e setup is de*ined )" a

Transport +a"er Address# which is the target RN$ Address *or user data# and the !u Transport Association#

which corresponds to the downlin, Tunnel ndpoint !denti*ier *or user data. The transparent container contains

all radio/related in*ormation that the S needs *or the hando0er# i.e. a complete RR$ message (e.g.# Ph"sical

$hannel Recon*iguration in UTRAN case# or 1ando0er rom UTRAN# or 1ando0er $ommand in GRAN !u

mode case' to )e sent transparentl" 0ia $N and source SRN$ to the S. or each RA& to )e set up# the target

RN$ ma" recei0e simultaneousl" downlin, user pac,ets )oth *rom the source SRN$ and *rom the new SGSN.

'OT2 *H This step for the new "G"' is unmodified compared to pre=/el=>. &f the new "G"' decides to establish8irect Tunnel- it provides to the taret /'1 the P=G? ddress for ser Plane and T2&8 for plin# data.

The 2 acts as the M"I the old e'ode0 acts as the source "/'1.

5. 6hen resources *or the transmission o* user data )etween target RN$ and new SGSN ha0e )een allocated and

the new SGSN is read" *or relocation o* SRNS# the orward Relocation Response ($ause# RAN Transparent

$ontainer# RANAP $ause# Target/RN$ !n*ormation' message is sent *rom the new SGSN to the old SGSN. Thismessage indicates that the target RN$ is read" to recei0e *rom source SRN$ the *orwarded downlin, P%Us# i.e.#

the relocation resource allocation procedure is terminated success*ull". RAN transparent container and RANAP

$ause are in*ormation *rom the target RN$ to )e *orwarded to the source SRN$. The Target RN$ !n*ormation#

one in*ormation element *or each RA& to )e set up# contains the RN$ Tunnel ndpoint !denti*ier and RN$ !P

address *or data *orwarding *rom the source SRN$ to the target RN$. The orward Relocation Response

message is applica)le onl" in case o* inter/SGSN SRNS relocation.

'OT2 3H This step is unmodified compared to pre=/el=>. The old MM2 acts as the old "G"'- and the sourcee'ode0 as the source "/'1.

:. &f $&ndirect 7orwardin$ applies the source MM2 sends a 1reate &ndirect 8ata 7orwardin Tunnel /eDuestmessae (&M"&- MM2 Tunnel 2ndpoint &dentifier for 1ontrol Plane- MM2 ddress for 1ontrol plane- Taret

/'1 ddress and T2&8(s) for 85 user plane) to the "ervin G?.

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<. The "ervin G? returns a 1reate &ndirect 8ata 7orwardin Tunnel /esponse (1ause- "ervin G? 85 T2&8(s))messae to the source MM2. &f the "ervin G? doesn$t support data forwardin- an appropriate cause value

shall be returned.

>. The source MM2 completes the preparation phase towards source e'ode0 by sendin the messae @andover

1ommand (Taret to "ource Transparent 1ontainer- 0earers "ubject to 8ata 7orwardin 5ist- ",P 1ause).

L0earers "ubject to 8ata forwardin listL may be included in the messae and it shall be a list of $ddress(es)and T2&8(s) for user traffic data forwardin$ received from taret side in the preparation phase ("tep 9) in thecase of direct forwardin or received from the "ervin G? in the preparation phase ("tep <) in the case of

indirect forwardin. /'P 1ause as received from new "G"' is indicated as ",P 1ause. /' Transparent1ontainer as received from new "G"' is indicated as Taret to "ource Transparent 1ontainer.

C. The source e'ode0 initiates data forwardin for bearers specified in the L0earers "ubject to 8ata 7orwardin5istL. The data forwardin may o directly to taret /'1 or alternatively o via the "ervin G? if so decided

by source MM2 in the preparation phase.

,+. The source e'ode0 will ive a command to the 2 to handover to the taret access networ# via the messae @O

from 2=T/' 1ommand. This messae includes a transparent container includin radio aspect parameters thatthe taret /'1 has set=up in the preparation phase. The details of this 2=T/' specific sinallin are

described in T" 3:.3++ J9K.

77 8oid.

'OT2 ;H The source e'ode0 does not send any /' contets towards the taret /'1.

79. The target RN$ shall send a Relocation %etect message to the new SGSN when the relocation execution trigger

is recei0ed. or SRNS relocation t"pe :U !n0ol0ed:# the relocation execution trigger ma" )e recei0ed *rom the

Uu inter*ace; i.e.# when target RN$ detects the S on the lower la"ers. 6hen the Relocation %etect message is

sent# the target RN$ shall start SRN$ operation.

'OT2 9H This step is unmodified compared to pre=/el=>.

7<. 6hen the S has recon*igured itsel*# it sends an RR$ message e.g.# a Ph"sical $hannel Recon*iguration

$omplete message to the target SRN$.

The 2 locally deactivates &"/ by settin its T&' from L/T=related TM"&L to LGT&L- if any 2P" bearercontet activated after the &"/ was activated in the 2 eists.

74. 6hen the target SRN$ recei0es the appropriate RR$ message# e.g. Ph"sical $hannel Recon*iguration $omplete

message or the Radio &earer Release $omplete message in UTRAN case# or the 1ando0er To UTRAN $omplete

message or 1ando0er $omplete message in GRAN case# i.e. the new SRN$/!% = S/RNT! are success*ull"

exchanged with the S )" the radio protocols# the target SRN$ shall initiate a Relocation $omplete procedure

)" sending the Relocation $omplete message to the new SGSN. The purpose o* the Relocation $omplete

procedure is to indicate )" the target SRN$ the completion o* the relocation o* the SRNS to the $N.

'OT2 :H This step is unmodified compared to pre=/el=>. The 2 acts as the M".

75. Upon receipt o* Relocation $omplete message# i* the SRNS Relocation is an inter SGSN SRNS relocation# thenew SGSN signals to the old SGSN the completion o* the SRNS relocation procedure )" sending a orward

Relocation $omplete message.

timer in source is started to super0ise when resources in Source eNode& and Source "ervin G? shall

be released.

'OT2 <H 7or the "G"' this step is unmodified compared to pre=/el=>. The old MM2 acts as the old "G"'- andthe source e'ode0 as the source "/'1.

7>. Upon receipt o* the Relocation $omplete message# the $N shall switch the user plane *rom the source RN$ to

the target SRN$. !* the SRNS Relocation is an inter/SGSN SRNS relocation or i* %irect Tunnel was esta)lished

in intra/SGSN SRNS relocation# the new SGSN sends Update P%P $ontext Request messages (new SGSN

Address# SGSN Tunnel ndpoint !denti*ier# 2oS Negotiated# ser0ing networ, identit"# $G!SA!# User $SG

!n*ormation# RAT t"pe# S !n*o $hange Reporting support indication# NRSN# %T!' to the GGSNs concerned.The SGSN shall send the ser0ing networ, identit" to the GGSN. !* %irect Tunnel is esta)lished the SGSN

pro0ides to GGSN the RN$3s Address *or User Plane and T!% *or %ownlin, data and shall include the %T! to

instruct the GGSN to appl" %irect Tunnel speci*ic error handling procedure as descri)ed in clause 7<.?. NRSN

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indicates SGSN support o* the networ, requested )earer control. The GGSNs update their P%P context *ields

and return an Update P%P $ontext Response (GGSN Tunnel ndpoint !denti*ier# Prohi)it Pa"load

$ompression# APN Restriction# S !n*o $hange Reporting Action# $SG !n*ormation Reporting Action# &$'

message. The Prohi)it Pa"load $ompression indicates that the SGSN should negotiate no data compression *or

this P%P context.

The P8' G? shall include a 1harin &d to be used at the "G"' as the 1harin &d for reportin usae for thisP8P contet. The P8' G? shall include the 1harin &d in the offline charin data.

'OT2 >H This step is unmodified compared to pre=/el=>. The P=G? acts as the GG"'.

,<. fter the M" has finished the reconfiuration procedure and if the new /outin rea &dentification is differentfrom the old one or if the M"$ T&' indicates LGT&L- the M" initiates the /outin rea pdate procedure. "ee

clause L5ocation Manaement Procedures (&u mode)L.

'OT2 CH &t is only a subset of the / update procedure that is performed- since the M" is in PMM=1O''21T28

state.

'OT2 ,+HThis step is unmodified compared to pre=/el=>. The 2 acts as the M". The old 2P" bearer informationin old MM2 and "ervin G? is removed as part of the /outin rea pdate procedure.

,>. ?hen the timer started in step ,9 epires- the source MM2 deletes the 2P" bearer resources by sendin 8elete

"ession /eDuest (1ause- Operation &ndication) messaes to the "ervin G? because the new "G"' is a GnAGp"G"'- which is derived from usin GTPv, for relocation sinallin between new GnAGp "G"' and old MM2.

The new GnAGp "G"' does not sinal any "ervin G? chane. The operation &ndication fla is not set- thatindicates to the "ervin G? that the "ervin G? shall not initiate a delete procedure towards the P8' G?. The

"ource "ervin G? ac#nowledes with 8elete "ession /esponse (1ause) messaes. &f &"/ is activated the causeindicates to the old "=G? that the old "=G? shall delete the bearer resources on the other old 1' node by

sendin 8elete 0earer /eDuest messae(s) to that 1' node. &f resources for indirect forwardin have beenallocated then these are released.

?hen the timer started in step ,9 epires- the source MM2 sends a /elease /esources messae to the source

e'ode0. ?hen the /elease /esources messae has been received and there is no loner any need for thee'ode0 to forward data- the source e'ode0 releases its resources.

!* the SRNS Relocation is inter/SGSN# then the *ollowing $A+ procedure calls shall )e per*ormed (see re*erenced

procedures in TS 9<.-@? 9BC'

'OT2 ,,HThe 1, 1M25 procedure call was omitted intentionally from this procedure since 2P" does not support

1M25 procedure calls. The other 1M25 procedure calls are unmodified compared to pre=/el=>.

The new SGSN shall determine the aximum APN restriction )ased on the recei0ed APN Restriction o* each P%P

context *rom the GGSN and then store the new aximum APN restriction 0alue.

!* the SRNS Relocation is intra/SGSN# then the a)o0e mentioned $A+ procedures calls shall not )e per*ormed.

!* Routing Area Update occurs# the SGSN shall determine whether %irect Tunnel can )e used )ased on the recei0ed

GPRS $A+ Su)scription !n*ormation. !* %irect Tunnel can not )e maintained the SGSN shall re/esta)lish RA&s andinitiate the Update P%P $ontext procedure to update the !P Address and T!% *or Uplin, and %ownlin, data.

!* Routing Area Update occurs# then the *ollowing $A+ procedure calls shall )e per*ormed (see re*erenced

procedures in TS 9<.-@? 9BC'D

$9' $A+EGPRSERoutingEAreaEUpdateESession and $A+EPSENoti*ication.

The" are called in the *ollowing orderD

/ The $A+EGPRSERoutingEAreaEUpdateESession procedure is called. The procedure returns as result

:$ontinue:.

/ Then the $A+EPSENoti*ication procedure is called. The procedure returns as result :$ontinue:.

$<' $A+EGPRSERoutingEAreaEUpdateE$ontext.

This procedure is called se0eral timesD once per P%P context. !t returns as result :$ontinue:.

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or $9 and $<D re*er to Routing Area Update procedure description *or detailed message *low.

'OT2 ,*H@andover /eject is performed as defined in clause 9.9.*.,.;- ecludin steps ; and <.

.3.4 3G SGS* t" MME c"6i'e# har# ha'#"5er a'# SR*S

re$"cati"' %r"ce#ureThe 3G GnAGp "G"' to MM2 1ombined @ard @andover and "/'" /elocation procedure is illustrated in

7iure 8.3.;=,.

ny steps descriptions that are from T" *3.+:+ J<K are shown as italic text and remain unmodified. &n those stepdescriptions an M" stands for 2- new "G"' for new MM2 and GG"' for P=G?.

The procedure between 2=T/' e'ode0 and 2- and between 2=T/' e'ode0 and MM2 are compliant with theeDuivalent procedure parts in clause 9.9H @andover.

&f emerency bearer services are onoin for the 2- the MM2 chec#s as part of the Trac#in rea pdate in the

eecution phase- if the handover is to a restricted area and if so MM2 releases the non=emerency bearers as specified

in clause 9.,+.3.

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Targete*"#eC

S"urce R*+

8$# G'G% SGS*

*e MME S-GA


. 7a'#"5er ReDuest

2. Re$"cati"' ReDuire#

11. Re$"cati"' +"66a'#

10. "rar# Re$"cati"' Res%"'se

. 7a'#"5er ReDuest &cB'"$e#ge

MS

14. "rar# SR*S +"'te/t 14. "rar# SR*S +"'te/t

13. RR+ 6essage

1!. 78 t" EUTR&* +"6%$ete

MS #etecte# ; target R*+

Esta$ish6e't " Ra#i" &ccess Cearers

+1

12. "rar#i'g " #ata

14. "rar# SR*S +"'te/t &cB'"$e#ge

1!. 7a'#"5er *"ti;

1. "rar# Re$"cati"' +"6%$ete

1. M"#i; Cearer ReDuest 20 :u Re$ease +"66a'#

20a. :u Re$ease +"6%$ete


1a. "rar# Re$"cati"' +"6%$ete &cB'"$e#ge

1<. M"#i; Cearer ReDuestRes%"'se

P-GA


!. +reate Sessi"' Res%"'se

1. ecisi"' t" ha'#"5er

7SS

22. Pr"ce#ure as i' TS 23.401, ste%s 2 t" " igure !.4.2.2-1



. +reate :'#irect ata "rar#i'g Tu''e$ Res%"'se



0i1ure ='3'$%2 3G GnGp SGS" to 88 com4ined hard handover and SR"S relocation procedure

,. The source /'1 decides to initiate a handover to 2=T/'.

9. The source SRN$ sends a Relocation Required message (Relocation T"pe# $ause# Source !%# Target !%# Source

RN$ To Target RN$ Transparent $ontainer' to the old SGSN. The source SRN$ shall set Relocation T"pe to

:U !n0ol0ed:. Source RN$ To Target RN$ Transparent $ontainer includes the necessar" in*ormation *or

relocation co/ordination# securit" *unctionalit" and RR$ protocol context in*ormation (including S

$apa)ilities'.

'OT2 ,H This step is unmodified compared to pre=/el=>. The taret e'ode0 acts as the taret /'1.

'OT2 ,aH The Taret &8 identifies an e'ode0. ?ith /el=> &u functionality this is an e'ode0 &8. s an

implementations option for supportin introduction scenarios with pre=/el> "G"'s the source /'1 may be confiured to use /'1 &8s instead of e'ode0 &8s to identify a taret e'ode0. The 1ause is relayed

transparently by the "G"' to the MM2 and the MM2 mappes /'P cause code to an ",P causecode. "ource /'1 to Taret /'1 Transparent 1ontainer carries information for the taret e'ode0. This

container is relayed transparently by the "G"'.

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<. The old SGSN determines *rom the Target !% i* the SRNS relocation is intra/SGSN SRNS relocation or inter/

SGSN SRNS relocation. !n case o* inter/SGSN SRNS relocation the old SGSN initiates the relocation resource

allocation procedure )" sending a orward Relocation Request message (!S!# Tunnel ndpoint !denti*ier

Signalling# $ontext# P%P $ontext# Target !denti*ication# RAN Transparent $ontainer# RANAP $ause#

G$S!' to the new SGSN. or relocation to an area where !ntra %omain $onnection o* RAN Nodes to ultiple

$N Nodes is used# the old SGSN ma" F i* it pro0ides !ntra %omain $onnection o* RAN Nodes to ultiple $N

Nodes /ha0e multiple target SGSNs *or each relocation target in a pool area# in which case the old SGSN will select one o* them to )ecome the new SGSN# as speci*ied in TS 9<.9<> <-C. P%P context contains GGSN

Address *or User Plane and Uplin, T!% *or %ata (to this GGSN Address and Uplin, T!% *or %ata# the old

SGSN and the new SGSN send uplin, pac,ets'. At the same time a timer is started on the and P%P contexts

in the old SGSN (see Routing Area Update procedure in clause :+ocation anagement Procedures (!u mode':'.

The orward Relocation Request message is applica)le onl" in case o* inter/SGSN SRNS relocation. The old

SGSN 3sets3 the G$S! *lag i* the context contains GPRS $A+ Su)scription !n*ormation.

'OT2 *H This step is unmodified compared to pre=/el=>. The new MM2 acts as the new "G"'- and the P=G? as

the GG"'. The GG"' user plane address and uplin# T2&8 are the P=G? user plane address and T2&8.The MM2 maps the P8P contet parameters to 2P" bearers.

;. The MM2 selects a "ervin G? and sends a 1reate "ession /eDuest (bearer contet(s) with P8' G? addressesand T2&8s for uplin# traffic- P'=M0/- "ervin 'etwor#- 2 Time None) messae per P8' connection to

the taret "ervin G?. 7or relocation from GnAGp "G"'- the taret MM2 provides the P'=M0/ if notreceived eplicitly from the GnAGp "G"' based on the mappin from M0/ (as specified in nne 2) to the

"ervin G?.

9. The "ervin G? allocates the "=G? addresses and T2&8s for the uplin# traffic on ", reference point (oneT2&8 per bearer). The taret "ervin G? sends a 1reate "ession /esponse ("ervin G? addresses and uplin#

T2&8(s) for user plane) messae bac# to the taret MM2.

:. The new MM2 reDuests the taret e'ode0 to establish the bearer(s) by sendin the messae @andover /eDuest(2 &dentifier- ",P 1ause- 1' 8omain &ndicator- % e'0- '" "ecurity Parameters to 2=T/'- 2P" 0earers

to be setup list- "ource to Taret Transparent 1ontainer- "ervin G? ddress(es) and T2&8(s) for ser Traffic8ata- @andover /estriction 5ist). ",P 1ause indicates the /'P 1ause as received from "G"'. "ource to

Taret Transparent 1ontainer contains the /' Transparent 1ontainer as received from "G"'. The '"

"ecurity Parameters to 2=T/' includes the '" &nterity Protection and 1ipherin alorithm(s)- e%"& and

'O'12MM2 information elements. @andover /estriction 5ist is sent if it is available in the Taret MM2I it is

described in clause ;.3.9.<.

&f the MM2 did not receive the 2 'etwor# 1apability information from the old "G"'- then the MM2 will not

have received information on the 2=T/' &nterity Protection and 2ncryption alorithms that the 2supports. &n this case- the MM2 can assume that the 2 supports both 2&,A22, and 2&*A22*.

'OT2 3H The MM2 derives %$"M2 from 1% and &% in the MM contet and associates it with e%"&- as described inT" 33.;+, J;,K and selects '" &nterity Protection and 1ipherin alorithms(s). e%"& and #ey

derivation parameters are tareted for 2. The MM2 and 2 derive the '" #eys and % e'0 from %$"M2.

&f the MM2 shares an 2P" security association with the 2- the MM2 may activate this native 2P"security contet by initiatin a '" "M1 procedure after havin completed the handover procedure.

The MM2 shall not reDuest the taret e'ode0 to establish 2P" G0/ bearers with maimum bitrate set to + and

those 2P" bearers should not be included in the 2P" 0earers to be setup list and should be deactivated by theMM2. 7or the remainin 2P" 0earer 1ontets the MM2 inores any ctivity "tatus &ndicator within an 2P"

0earer 1ontet and reDuests the taret e'ode0 to allocate resources for all the remainin 2P" 0earer 1ontets.

The MM2 shall compute the 2=M0/- accordin to clause ;.<.3- based on eplicit P'=M0/ values

received from the GnAGp "G"'. &f eplicit P'=M0/ values are not received by the MM2- a local 2=M0/ shall be included in the $2P" 0earers be setup list $ &2. The local 2=M0/ is described in clause

nne 2.

L8ata forwardin not possibleL indication per bearer shall be included in the $2P" 0earers to be setup list$ if the

taret MM2 decides the correspondin bearer will not be subject to data forwardin.

'OT2 ;H The MM2 derives the security parameters from the security parameters received from the "G"'.

'OT2 9H n MM2 that supports handovers from pre=/el=> 3G "G"'s derives from the /'1 &8 received from old"G"' an e'ode0 address.

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<. The taret e'ode0 allocates the reDuested resources and returns the applicable parameters to the taret MM2 inthe messae @andover /eDuest c#nowlede (Taret to "ource Transparent 1ontainer- 2P" 0earers setup list-

2P" 0earers failed to setup list- 1ause). The taret e'ode0 shall inore it if the number of radio bearers in the"ource to Taret Transparent container does not comply with the number of bearers reDuested by the MM2 and

allocate bearers as reDuested by the MM2.

The taret e'ode0 inserts the information provided by the MM2 (%"&- selected '" &nterity Protection and1ipherin alorithm(s)- 'O'12MM2) and selected " interity and cipherin alorithm(s) into the T/'

//1 messae- which is contained in the Taret to "ource Transparent 1ontainer.

>. &f $&ndirect 7orwardin$ and relocation of "ervin G? apply the taret MM2 sends a 1reate &ndirect 8ata

7orwardin Tunnel /eDuest messae (&M"&- MM2 Tunnel 2ndpoint &dentifier for 1ontrol Plane- MM2 ddressfor 1ontrol plane- Taret e'ode0 ddress and T2&8(s) for 85 user plane) to the "ervin G?. The allocation of

a new "ervin G? by steps ; and 9 the MM2 shall consider as a "ervin G? chane.

C. The "ervin G? returns a 1reate &ndirect 8ata 7orwardin Tunnel /esponse (1ause- "ervin G? 85 T2&8(s))

messae to the source MM2. &f the "ervin G? doesn$t support data forwardin- an appropriate cause valueshall be returned.

7-. 6hen resources *or the transmission o* user data )etween target RN$ and new SGSN ha0e )een allocated and

the new SGSN is read" *or relocation o* SRNS# the orward Relocation Response ($ause# RAN Transparent$ontainer# RANAP $ause# Target/RN$ !n*ormation' message is sent *rom the new SGSN to the old SGSN. This

message indicates that the target RN$ is read" to recei0e *rom source SRN$ the *orwarded downlin, P%Us# i.e.#

the relocation resource allocation procedure is terminated success*ull". RAN transparent container and RANAP

$ause are in*ormation *rom the target RN$ to )e *orwarded to the source SRN$. The Target RN$ !n*ormation#

one in*ormation element *or each RA& to )e set up# contains the RN$ Tunnel ndpoint !denti*ier and RN$ !P

address *or data *orwarding *rom the source SRN$ to the target RN$. The orward Relocation Response

message is applica)le onl" in case o* inter/SGSN SRNS relocation.

'OT2 :H This step is unmodified compared to pre=/el=>. The new MM2 acts as the new "G"'- and the taret

e'ode0 as the taret "/'1. /'P 1ause indicates the 1ause as received from taret e'ode0. /'Transparent 1ontainer contains the Taret to "ource Transparent 1ontainer as received from e'ode0.

77. The old SGSN continues the relocation o* SRNS )" sending a Relocation $ommand message (Target RN$ ToSource RN$ Transparent $ontainer# RA&s To &e Released# RA&s Su)ect To %ata orwarding' to the source

SRN$. The old SGSN decides the RA&s to )e su)ect *or data *orwarding )ased on 2oS# and those RA&s shall

)e contained in RA&s su)ect to data *orwarding. or each RA& su)ect to data *orwarding# the in*ormation

element shall contain RA& !%# Transport +a"er Address# and !u Transport Association. These are the same

Transport +a"er Address and !u Transport Association that the target RN$ had sent to new SGSN in Relocation

Request Ac,nowledge message# and these are used *or *orwarding o* downlin, N/P%U *rom the source SRN$ to

the target RN$. The source SRN$ is now read" to *orward downlin, user data directl" to the target RN$ o0er

the !u inter*ace. This *orwarding is per*ormed *or downlin, user data onl".

'OT2 <H This step is unmodified compared to pre=/el=>. The taret e'ode0 acts as the taret /'1- and the new

MM2 acts as the new "G"'. The forwardin of downlin# user data from source "/'1 may o directlyto taret e'ode0 or via the "ervin G?.

79. The source SRN$ ma"# according to the 2oS pro*ile# )egins the *orwarding o* data *or the RA&s to )e su)ect

*or data *orwarding.

NHT ?D The order o* steps# starting *rom step @ onwards# does not necessaril" re*lect the order o* e0ents. or

instance# source RN$ ma" start data *orwarding (step @'# send the RR$ message to S (step ?' and

*orward SRNS $ontext message to the old SGSN (step B' almost simultaneousl".

The data *orwarding at SRNS relocation shall )e carried out through the !u inter*ace# meaning that the GTP/

P%Us exchanged )etween the source SRN$ and the target RN$ are duplicated in the source SRN$ and routed

at the !P la"er towards the target RN$. or each radio )earer which uses lossless P%$P the GTP/P%Us related

to transmitted )ut not "et ac,nowledged P%$P/P%Us are duplicated and routed at !P la"er towards the target

RN$ together with their related downlin, P%$P sequence num)ers. The source RN$ continues transmitting

duplicates o* downlin, data and recei0ing uplin, data.

&e*ore the ser0ing RN$ role is not "et ta,en o0er )" target RN$ and when downlin, user plane data starts to

arri0e to target RN$# the target RN$ ma" )u**er or discard arri0ing downlin, GTP/P%Us according to the

related 2oS pro*ile.

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'OT2 CH This step is unmodified compared to pre=/el=>. The taret e'ode0 acts as the taret "/'1. The dataforwardin may o directly to taret e'ode0 or alternatively o via the "ervin G? if so decided by new

MM2 in the preparation phase.

7<. &e*ore sending the RR$ message the uplin, and downlin, data trans*er shall )e suspended in the source SRN$

*or RA&s# which require deli0er" order. The RR$ message is *or example Ph"sical $hannel Recon*iguration *or

RNS to RNS relocation# or !nters"stem to UTRAN 1ando0er *or &SS to RNS relocation# or 1ando0er *romUTRAN $ommand *or &SS relocation# or 1ando0er $ommand *or &SS to &SS relocation. 6hen the source

SRN$ is read"# the source RN$ shall trigger the execution o* relocation o* SRNS )" sending to the S the RR$

message pro0ided in the Target RN$ to source RN$ transparent container# e.g.# a Ph"sical $hannel

Recon*iguration (U !n*ormation lements# $N !n*ormation lements' message. U !n*ormation lements

include among others new SRN$ identit" and S/RNT!. $N !n*ormation lements contain among others +ocation

Area !denti*ication and Routing Area !denti*ication.

6hen the S has recon*igured itsel*# it sends an RR$ message e.g.# a Ph"sical $hannel Recon*iguration

$omplete message to the target SRN$. !* the orward SRNS $ontext message with the sequence num)ers is

recei0ed# the exchange o* pac,ets with the S ma" start. !* this message is not "et recei0ed# the target RN$ ma"

start the pac,et trans*er *or all RA&s# which do not require maintaining the deli0er" order.

'OT2 ,+HThis step is unmodified compared to pre=/el=>. This tet is valid for the //1 messae sent from source

/'1 to the 2. ?hen the 2 has ot access to taret e'ode0 it sends the @O to 2=T/' 1ompletemessae. This //1 messae received as part of Taret to "ource Transparent 1ontainer- includesinformation about the selected security alorithms and related #ey information. 0ased on this information-

the 2 selects the same alorithms for the '" if the %"& value indicates that the MM2 has no security

association with the 2. &f the %"& value indicates that the MM2 has a security association with the 2- but the 2 has lost the security contet of the 2=T/' side (error case)- the 2 will start ttach

procedure on the 2=T/' side

,;. There is no /' contet transfer durin inter /T handovers with 2=T/'. &f the source /'1 oriinates any"/'1 contets the MM2 ac#nowledes the receipt towards the "G"' and inores the messae content.

'OT2 ,,HThis step is unmodified compared to pre=/el=>. The new MM2 acts as the new "G"'- and the tarete'ode0 as the taret "/'1.

,9. ?hen the 2 has successfully accessed the taret e'ode0- the taret e'ode0 informs the taret MM2 by

sendin the messae @andover 'otify (T&S21G&). The 2 shall implicitly derive the 2P" bearers for which an2=/0 was not established from the @O from T/' 1ommand and deactivate them locally without an

eplicit '" messae at this step.

,:. pon receipt of @andover 'otify messae- if the "/'" /elocation is an inter "G"' "/'" relocation- the new"G"' sinals to the old "G"' the completion of the "/'" relocation procedure by sendin a 7orward

/elocation 1omplete messae.

pon receipt of the /elocation 1omplete messae the new MM2 starts a timer.

'OT2 ,*HThis step is unmodified compared to pre=/el=> ecept that the @andover 'otify messae is received

instead of a /elocation 1omplete messae. The new MM2 acts as the new "G"'.

,<. The taret MM2 will now complete the handover procedure by informin the "ervin G? that the taret MM2is now responsible for all the bearers the 2 have established. This is performed in the messae Modify 0earer

/eDuest (1ause- Tunnel 2ndpoint &dentifier 1ontrol Plane- MM2 ddress for 1ontrol Plane- e'ode0ddress(es) and T2&8(s) for ser Traffic- /T type- P'=M0/) per P8' connection. &f the P8' G?

reDuested 2$s location information andAor ser 1"G information (determined from the 2 contet)- the MM2also includes the ser 5ocation &nformation &2 andAor ser 1"G &nformation &2 in this messae. &f the 2 Time

None has chaned- the MM2 includes the 2 Time None &2 in this messae.

The MM2 releases the non=accepted bearers by trierin the bearer release procedure as specified in

clause 9.;.;.*. &f the "ervin G? receives a 85 pac#et for a non=accepted bearer- the "ervin G? drops the 85 pac#et and does not send a 8ownlin# 8ata 'otification to the MM2.

,>. The "ervin G? informs the P8' G? the P'=M0/ and the chane of for eample the /T type that e..can be used for charin- by sendin the messae Modify 0earer /eDuest (P'=M0/- "ervin 'etwor#- P8'

1harin Pause "upport &ndication) per P8' connection. The "=G? also includes ser 5ocation &nformation &2andAor 2 Time None &2 andAor ser 1"G &nformation &2 if it is present in step ,<. The "ervin G? allocates

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85 T2&8s on "9A"> even for non=accepted bearers. The P8' G? must ac#nowlede the reDuest with themessae Modify 0earer /esponse (8efault bearer id- P' /estriction- P8' 1harin Pause 2nabled &ndication

(if P8' G? has chosen to enable the function)). ?hen the 2 moves from GnAGp "G"' to the MM2- theP8' G? shall send the P' restriction of each bearer contet to the "ervin G?.

,C. The "ervin G? ac#nowledes the user plane switch to the taret MM2 via the messae Modify 0earer

/esponse (1ause- Tunnel 2ndpoint &dentifier 1ontrol Plane- "ervin G? ddress for 1ontrol Plane- 8efault bearer id- P' restriction). The "ervin G? shall forward the received P' /estriction to the MM2. t thisstae the user plane path is established for all bearers between the 2- taret e'ode0- "ervin G? and P8'

G?.

9-. Upon recei0ing the Relocation $omplete message or# i* it is an inter/SGSN SRNS relocation# the orward

Relocation $omplete message# the old SGSN sends an !u Release $ommand message to the source RN$. 6hen

the RN$ data/*orwarding timer has expired# the source RN$ responds with an !u Release $omplete message.

'OT2 ,3HThis step is unmodified compared to pre=/el=>.

*,. The 2 initiates a Trac#in rea pdate procedure when one of the conditions listed in clause LTriers for


The taret MM2 #nows that an &/T @andover has been performed for this 2 as it received the bearercontet(s) by handover messaes and therefore the taret MM2 performs only a subset of the T update procedure- specifically it ecludes the contet transfer procedures between source "G"' and taret MM2. The

taret MM2 ets the subscribed 2=M0/ value and the subscribed P'=M0/ value from the @"" durinthe T update procedure.

**. The taret MM2 calculates 2=M0/ as defined in clause ;.<.3. &f this calculated value is different from the2=M0/ computed durin step :- or the P'=M0/ mapped from the subscribed M0/ is different from the

subscribed P'=M0/- or the mapped subscribed Eo" profile (i.e. the subscribed Eo" profile mappedaccordin to nne 2) of the default bearer is different from the 2P" "ubscribed Eo" profile received from the

@""- the new MM2 shall initiate "ubscribed Eo" Modification procedure as described in clause 9.;.*.*- 7iure9.;.*.*=,.

*3. ?hen the timer started in step ,: epires the new MM2 releases the resources that have been allocated for

indirect forwardin.

!* the SRNS Relocation is inter/SGSN# then the *ollowing $A+ procedure calls shall )e per*ormed (see re*erenced

procedures in TS 9<.-@? 9BC'

$7' $A+EGPRSEP%PE$ontextE%isconnection# $A+EGPRSE%etach and $A+EPSENoti*ication.


/ The $A+EGPRSEP%PE$ontextE%isconnection procedure is called se0eral timesD once per P%P context.

The procedure returns as result :$ontinue:.

/ Then the $A+EGPRSE%etach procedure is called once. The procedure returns as result :$ontinue:.

/ Then the $A+EPSENoti*ication procedure is called once. The procedure returns as result :$ontinue:.



!* the SRNS Relocation is intra/SGSN# then the a)o0e mentioned $A+ procedures calls shall not )e per*ormed.

!* Routing Area Update occurs# the SGSN shall determine whether %irect Tunnel can )e used )ased on the recei0ed

GPRS $A+ Su)scription !n*ormation. !* %irect Tunnel can not )e maintained the SGSN shall re/esta)lish RA&s and

initiate the Update P%P $ontext procedure to update the !P Address and T!% *or Uplin, and %ownlin, data.

!* Routing Area Update occurs# then the *ollowing $A+ procedure calls shall )e per*ormed (see re*erenced

procedures in TS 9<.-@? 9BC'D

'OT2 ,;HThis 1M25 handlin is unmodified compared to pre=/el=>.

'OT2 ,9H1M25 procedure calls 1* and 13 were omitted intentionally from this procedure since 2P" does not

support 1M25 procedure calls.

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'OT2 ,:H@andover /eject procedure is performed as defined in clause 9.9.*.*.;.

.3.! R"uti'g &rea U%#ate

The /outin rea pdate procedure ta#es place when a 2 that is reistered with an MM2 selects a T/' or

G2/' cell served by a GnAGp "G"'. &n this case- the 2 chanes to a /outin rea that the 2 has not yetreistered with the networ#. This procedure is initiated by an idle state or by a connected state 2. The /outin reapdate procedure is illustrated in 7iure 8.3.9=,.

ny step descriptions that are ta#en from T" *3.+:+ J<K for a GnAGp "G"' are shown as italic tet and remainunmodified. &n that step descriptions an M" stands for 2- old "G"' for old MM2 and GG"' for P=G?. The old

MM2 behaves towards the new GnAGp "G"' always li#e an old GnAGp 3G="G"'- reardless of whether the newGnAGp "G"' is a *G="G"' or a 3G="G"'.

MS e*"#eC 'e SGS* 7SS "$# MME

2. SGS* +"'te/t Res%"'se

3. Securit; u'cti"'s


2. SGS* +"'te/t ReDuest

. U%#ate PP +"'te/t ReDuest

. U%#ate PP +"'te/t Res%"'se

. U%#ate L"cati"'


11. R"utei'g &rea U%#ate &cce%t

<. +a'ce$ L"cati"'

<. +a'ce$ L"cati"' &cB

. :'sert Suscrier ata &cB

. :'sert Suscrier ata

4. SGS* +"'te/t &cB'"$e#ge

P-GA




S-GA

+3

+2

0. UE cha'ges t" UTR&* "r GER&*

13. S1-&P S1 Re$ease

"$# SGS*

0i1ure ='3'+$%2 Routin1 Area !pdate procedure

+. The 2 selects a T/' or G2/' cell. This cell is in a /outin rea that the 2 not yet reistered with the

networ# or the 2 reselects a T/' or G2/' cell and the T&' indicates LGT&L. The 2 in21M=1O''21T28 state may chane to the G2/' cell throuh 'etwor# ssisted 1ell 1hane ('11).

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,. The M" sends a /outin rea pdate /eDuest (old P=TM"&- old /&- old P=TM"& "inature- pdate Type-follow on reDuest- 1lassmar#- M" 'etwor# 1apability- additional P=TM"&A/&- %"&) to the new "G"'. pdate

Type shall indicate / update- periodic / update- 1ombined / A 5 pdate or 1ombined / A 5 pdatewith &M"& attach reDuested. The 0"" shall add the 1ell Global &dentity includin the /1 and 51 of the cell

where the messae was received before passin the messae to the "G"'. The "/'1 shall add the /outin rea&dentity before forwardin the messae to the 3G="G"'. 1lassmar# contains the M" GP/" multislot

capabilities and supported GP/" cipherin alorithms as defined in T" *;.++> J;<K. The "G"' may use- as animplementation option- the follow=on reDuest indication to release or #eep the &u connection after the completion

of the / update procedure.

&f the 2$s T&' indicates LGT&L and the 2 holds a valid GT& then the 2 indicates the GT& as the old

P=TM"& and old /&. &f the 2$s T&' indicates LP=TM"&L or L/T=related TM"&L and the 2 holds a valid

P=TM"& and related /& then these two elements are indicated as old P=TM"& and old /&. Mappin a GT& to

a P=TM"& and an /& is specified in T" *3.++3 JCK.

&f the 2 holds a valid P=TM"& and related /& and the old P=TM"& and old /& indicate a P=TM"&A/&

mapped from a GT&- then the 2 indicates these parameters as additional P=TM"&A/&. The GnAGp "G"'shall inore this additional P=TM"&A/&.

The old P=TM"& is indicated in the / /eDuest messae for &u=mode only. 7or Gb mode the T55& is derived

from the value that is determined as the old P=TM"& accordin to the rules above. The routin parameter that issinalled in the //1 sinallin to the /'1 for routin to the "G"' is derived from the identifier that issinalled as the old P=TM"& accordin to the rules above. 7or a combined MM2A"G"' the /' is confiured to

route the '/&(s) of this combined node to the same combined node. The /' is also confiured to route '/&(s)

of P=TM"&s that are enerated by the 2$s mappin of the GT&s allocated by the combined node. "uch a /'confiuration may also be used for separate nodes to avoid chanin nodes in the pool caused by inter /T

mobility.

%"& is mapped from an e%"& indentifyin a % "M2 if the 2 indicates a P=TM"& mapped from GT& in theinformation element Lold P=TM"&L. %"& identifies a (1%- &%) pair if the 2 indicates a P=TM"& in the

information element Lold P=TM"&L.

*. The new SGSN sends SGSN $ontext Request (old RA!# T++! or old P/TS!# old P/TS! Signature# New SGSN

Address' to the old SGSN to get the and P%P contexts *or the S. !* the new SGSN pro0ides *unctionalit" *or !ntra %omain $onnection o* RAN Nodes to ultiple $N Nodes# the new SGSN ma" deri0e the old SGSN

*rom the old RA! and the old P/TS! (or T++!' and send the SGSN $ontext Request message to this old SGSN.

Htherwise# the new SGSN deri0es the old SGSN *rom the old RA!. !n an" case the new SGSN will deri0e an

SGSN that it )elie0es is the old SGSN. This deri0ed SGSN is itsel* the old SGSN# or it is associated with the same

pool area as the actual old SGSN and it will determine the correct old SGSN *rom the P/TS! (or T++!' and

rela" the message to that actual old SGSN.

'OT2 *H GT& mapped to a P=TM"&A/& provides an old /& that uniDuely identifies an old MM2 then there is

no need to relay between MM2 in the old pool- reardless whether the new "G"' supports suchfunctionality or not. Mappin a GT& to a P=TM"& and an /& is specified in nne @.

The old SGSN 0alidates the old P/TS! Signature and responds with an appropriate error cause i* it does not

match the 0alue stored in the old SGSN. This should initiate the securit" *unctions in the new SGSN. !* the securit" *unctions authenticate the S correctl"# the new SGSN shall send an SGSN $ontext Request (old RA!#

T++!# S 8alidated# New SGSN Address' message to the old SGSN. S 8alidated indicates that the new SGSN

has authenticated the S. !* the old P/TS! Signature was 0alid or i* the new SGSN indicates that it has

authenticated the S# the old SGSN starts a timer. !* the S is not ,nown in the old SGSN# the old SGSN

responds with an appropriate error cause.

!* the U with emergenc" )earers is not authenticated in the old (in a networ, supporting unauthenticated

Us' the old continues the procedure with sending a $ontext Response and starting the timer also when it

cannot 0alidate the $ontext Request.

'OT2 3H 7or the new "G"'- this step is unmodified compared to pre=/el=>. The MM2 (called old "G"' in abovedescription) needs to provide "G"' functionality.

*b. The old <G SGSN responds with an SGSN $ontext Response ( $ontext# P%P $ontexts' message. or each P%P context the old <G/SGSN shall include the GTP sequence num)er *or the next uplin, GTP P%U to )e

tunnelled to the GGSN and the next downlin, GTP sequence num)er *or the next P%U to )e sent to the S.

ach P%P $ontext also includes the P%$P sequence num)ers i* P%$P sequence num)ers are recei0ed *rom the

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old SRNS. The new <G/SGSN shall ignore the S Networ, $apa)ilit" contained in $ontext o* SGSN

$ontext Response onl" when it has pre0iousl" recei0ed an S Networ, $apa)ilit" in the Routing Area Request.

The GTP sequence num)ers recei0ed *rom the old <G/SGSN are onl" rele0ant i* deli0er" order is required *or

the P%P context (2oS pro*ile'.

'OT2 ;H This step is for the GnAGp "G"' unmodified compared to pre=/el=>. The MM2 (old "G"' in this step)

maps 2P" bearers one=to=one to P8P contets and provides the /elease CC parameters of the bearer Eo" profile to the new "G"'. The Gn sinallin between the new GnAGp "G"' and the old 1' node has nocapabilities to indicate &"/ ctivated or &"/ "upported. The GTP and P81P seDuence numbers are not

relevant as the networ# does not confiure usae of Ldelivery order reDuiredL and does not confiure lossless T/' P81P as described in clause Lcompatibility issuesL.

3. Securit" *unctions ma" )e executed. These procedures are de*ined in clause :Securit" unction: in

TS 9<.->- @C. $iphering mode shall )e set i* ciphering is supported. !* the SGSN $ontext Response message did

not include !!S8 and A%% is supported )" the SGSN# the SGSN retrie0es the !!S8 *rom the S.

!* the securit" *unctions *ail (e.g. )ecause the SGSN cannot determine the 1+R address to esta)lish the Send

Authentication !n*o dialogue'# the !nter SGSN RAU Update procedure *ails. A reect shall )e returned to the S

with an appropriate cause.

'OT2 9H This step is unmodified compared to pre=/el=>.

;. The new SGSN sends an SGSN $ontext Ac,nowledge message to the old SGSN. The old MM2 (which is the old

"G"' from the new "G"'$s point of view) mar#s in its contet that the information in the G?s and the @"" areinvalid. This triers the G?s- and the @"" to be updated if the 2 initiates a Trac#in rea pdate procedure

bac# to the old MM2 before completin the onoin /outin rea pdate procedure. !* the securit" *unctions

do not authenticate the S correctl"# then the routing area update shall )e reected# and the new SGSN shall

send a reect indication to the old SGSN. The old MM2 shall continue as if the "G"' 1ontet /eDuest wasnever received.

'OT2 :H The new "G"'$s operation is unmodified compared to pre=/el=>. The old MM2A"=G? (old "G"' fromthe new "G"'$s point of view) does not forward any data towards the new "G"'.

9. Boid.

:. The new SGSN sends Update P%P $ontext Request (new SGSN Address# T!%# 2oS Negotiated# ser0ing

networ, identit"# $G!SA!# User $SG !n*ormation# RAT t"pe# S !n*o $hange Reporting support indication#

NRSN' to the GGSNs concerned. The SGSN shall send the ser0ing networ, identit" to the GGSN. NRSN

indicates SGSN support o* the networ, requested )earer control. The SGSN shall onl" indicate that it supports

the procedure i* it supports it and it is indicated that the S also supports it in the SGSN $ontext Response

message as descri)ed a)o0e. !* the NRSN is not included in the Update P%P $ontext Request message the

GGSN shall# *ollowing this procedure# per*orm a GGSN/!nitiated P%P $ontext odi*ication to change the &$

to 3S/Hnl"3 *or all P%P/AddressAPN/pairs *or which the current &$ is 3SN63. The GGSNs update their

P%P context *ields and return Update P%P $ontext Response (T!%# Prohi)it Pa"load $ompression# APN

Restriction# S !n*o $hange Reporting Action# $SG !n*ormation Reporting Action# &$'. The Prohi)it Pa"load

$ompression indicates that the SGSN should negotiate no data compression *or this P%P context.

'OT2 CH This step is unmodified compared to pre=/el=>.

<. The new SGSN in*orms the 1+R o* the change o* SGSN )" sending Update +ocation (SGSN Num)er# SGSN

Address# !S!# !!S8# Update T"pe# 1omogenous Support o* !S 8oice o0er PS Sessions' to the 1+R.

!!S8 is sent i* the A%% *unction is supported. pdate Type indicates Lnormal updateL. 7or L@omoenous

"upport of &M" Boice over P" "essionsL- see clause 9.3.> of T" *3.+:+ J<K.

'OT2 ,+HThis step is unmodified compared to pre=/el=>. 1larification about update type added to show that this is

the trier for the @"" to cancel only an old "G"' and not also an old MM2.

>. The @5/ sends 1ancel 5ocation (&M"&- 1ancellation Type) to any old "G"' with 1ancellation Type set to

pdate Procedure. The old "G"' removes the MM and 2P" bearer contets. The old "G"' ac#nowledes with1ancel 5ocation c# (&M"&).

'OT2 ,,H7or the GnAGp "G"' the @"" interoperation is unmodified compared to earlier standards /eleases.

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C. The 1+R sends !nsert Su)scri)er %ata (!S!# GPRS Su)scription %ata' to the new SGSN. The new SGSN

0alidates the U3s presence in the (new' RA. !* due to regional su)scription restrictions or access restrictions

the S is not allowed to )e attached in the RA# the SGSN reects the Routing Area Update Request with an

appropriate cause# and ma" return an !nsert Su)scri)er %ata Ac, (!S!# SGSN Area Restricted' message to the

1+R. !* the networ, supports the H$N con*iguration *or networ, sharing# the SGSN ma"# i* the S is not a

3Networ, Sharing Supporting S3# in this case decide to initiate redirection )" sending a Reroute $ommand to

the RNS# as descri)ed in TS 9<.957 94C instead o* reecting the Routing Area Update Request. !* all chec,s are success*ul# the SGSN constructs an context *or the S and returns an !nsert Su)scri)er %ata Ac, (!S!'

message to the 1+R.

'OT2 ,*HThis step is unmodified compared to pre=/el=>.

7-. The 1+R ac,nowledges the Update +ocation )" sending Update +ocation Ac, (!S!' to the new SGSN.

'OT2 ,3HThis step is unmodified compared to pre=/el=>.

,,. &f the new "G"' is a *G="G"'H The new SGSN 0alidates the S3s presence in the new RA. !* due to roaming

restrictions or access restrictions the S# is not allowed to )e attached in the SGSN# or i* su)scription chec,ing

*ails# the new SGSN reects the routing area update with an appropriate cause. !* all chec,s are success*ul# the

new SGSN constructs and P%P contexts *or the S. A logical lin, is esta)lished )etween the new SGSN

and the S. The new SGSN responds to the S with Routing Area Update Accept (P/TS!# P/TS! Signature# Recei0e N/P%U Num)er'. Recei0e N/P%U Num)er contains the ac,nowledgements *or each ac,nowledged/

mode NSAP! used )" the S# there)" con*irming all mo)ile/originated N/P%Us success*ull" trans*erred )e*ore

the start o* the update procedure.

&f the new "G"' is a 3G="G"'H The new SGSN 0alidates the S3s presence in the new RA. !* due to roaming

restrictions or access restrictions the S is not allowed to )e attached in the RA# or i* su)scription chec,ing

*ails# the SGSN reects the routing area update with an appropriate cause. !* the networ, supports the H$N

con*iguration *or networ, sharing# the SGSN ma"# i* the S is not a 3Networ, Sharing Supporting S3# in this

case decide to initiate redirection )" sending a Reroute $ommand to the RNS# as descri)ed in TS 9<.957 94C

instead o* reecting the routing area update. !* all chec,s are success*ul# the new SGSN esta)lishes context

*or the S. The new SGSN responds to the S with Routing Area Update Accept (P/TS!# 8+R TS!# P/TS!

Signature'.

7or a M" with onoin emerency bearer services- the new 3G="G"' accepts the /outin rea pdate /eDuest

and deactivates the non=emerency P8P contets as specified in clause C.*.;.* in T" *3.+:+ J<K.

?hen receivin the / ccept messae and there is no &"/ ctivated indication the 2 shall set its T&' toLP=TM"&L.

'OT2 ,3aH GnAGp "G"' never indicates &"/ ctivated as it does not support &"/.

'OT2 ,;H7or the "G"' this step is unmodified compared earlier standards /eleases. '=P8 numbers are not

relevant as the networ# does not confiure usae of ac#nowleded mode '"P&s as described in clauseLcompatibility issuesL.

,*. &f the new "G"' is a *G="G"'H The S ac,nowledges the new P/TS! )" returning a Routing Area Update

$omplete (Recei0e N/P%U Num)er' message to the SGSN. Recei0e N/P%U Num)er contains theac,nowledgements *or each ac,nowledged/mode NSAP! used )" the S# there)" con*irming all mo)ile/

terminated N/P%Us success*ull" trans*erred )e*ore the start o* the update procedure. !* Recei0e N/P%U

Num)er con*irms reception o* N/P%Us that were *orwarded *rom the old SGSN# these N/P%Us shall )e

discarded )" the new SGSN. ++$ and SN%$P in the S are reset.

&f the new "G"' is a 3G="G"'H The S con*irms the reallocation o* the TS!s )" returning a Routing Area

Update $omplete message to the SGSN.

'OT2 ,9HThis step is unmodified compared to pre=/el=>. '=P8 numbers are not relevant as the networ# does not

confiure usae of ac#nowleded mode '"P&s as described in clause Lcompatibility issuesL.

,3. ?hen the timer started in step *) epires the old MM2 releases any /' and "ervin G? resources. The oldMM2 deletes the 2P" bearer resources by sendin 8elete "ession /eDuest (1auseI Operation &ndication)

messaes to the "ervin G?. The operation &ndication fla is not set- that indicates to the old "ervin G? thatthe old "ervin G? shall not initiate a delete procedure towards the P8' G?. The old MM2 derives from the

GTPv, contet transfer sinallin that the new "G"' is a GnAGp "G"' and therefore any old "=G? resources

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are released by the old MM2. GnAGp "G"' does not sinal any "=G? chane. &f the old "=G? has due to&"/ a control connection with another 1' node (MM2 or "G"') the cause indicates to the old "=G? that the

old "=G? shall delete the bearer resources on the other old 1' node by sendin 8elete 0earer /eDuestmessae(s) to that other old 1' node.

&f the old MM2 has an ",=MM2 association for the 2- the source MM2 sends a ",= /elease 1ommand to the

source e'ode0 when receivin the "G"' 1ontet c#nowlede messae from the new "G"'. The //1connection is released by the source e'ode0. The source e'ode0 confirms the release of the //1 connectionand of the ",= connection by sendin a ",= /elease 1omplete messae to the source MM2.

'OT2 ,:HThe new "G"' may initiate /0 establishment after eecution of the security functions- or wait untilcompletion of the / update procedure. 7or the M"- /0 establishment may occur anytime after the

/outin rea pdate /eDuest is sent.

!n the case o* a reected routing area update operation# due to regional su)scription# roaming restrictions# access

restrictions (see TS 9<.997 9@C and TS 9<.--? 9?C' or )ecause the SGSN cannot determine the 1+R address to

esta)lish the locating updating dialogue# the new SGSN shall not construct an context. A reect shall )e returned to

the S with an appropriate cause and the PS signalling connection shall )e released. Upon return to idle# the S shall

act according to TS 9<.799 7-C.

!* the networ, supports the H$N con*iguration *or networ, sharing# the SGSN ma"# i* the S is not a 3Networ,Sharing Supporting S3# in this case decide to initiate redirection )" sending a Reroute $ommand to the RNS# as

descri)ed in TS 9<.957 94C instead o* reecting the routing area update.

!* the new SGSN is una)le to update the P%P context in one or more GGSNs# the new SGSN shall deacti0ate the

corresponding P%P contexts as descri)ed in clause :SGSN/initiated P%P $ontext %eacti0ation Procedure:. This shall

not cause the SGSN to reect the routing area update.

The P%P $ontexts shall )e sent *rom old to new SGSN in a prioritiIed order# i.e. the most important P%P $ontext *irst

in the SGSN $ontext Response message. (The prioritiIation method is implementation dependent# )ut should )e )ased

on the current acti0it"'.



!* the new SGSN is una)le to support the same num)er o* acti0e P%P contexts as recei0ed *rom old SGSN# the new

SGSN should use the prioritisation sent )" old SGSN as input when deciding which P%P contexts to maintain acti0e

and which ones to delete. !n an" case# the new SGSN shall *irst update all contexts in one or more GGSNs and then

deacti0ate the context(s' that it cannot maintain as descri)ed in clause :SGSN/initiated P%P $ontext %eacti0ation

Procedure:. This shall not cause the SGSN to reect the routing area update.

NHT 7@D!n case S was in P/$HNN$T% state the P%P $ontexts are sent alread" in the orward

Relocation Request message as descri)ed in clause :Ser0ing RNS relocation procedures: o*

TS 9<.->- @C.

!* the routing area update procedure *ails a maximum allowa)le num)er o* times# or i* the SGSN returns a Routing

Area Update Reect ($ause' message# the S shall enter !%+ state.

'OT2 ,>HThe 1, 1M25 procedure call was omitted intentionally from this procedure since 2P" does not support

1M25 procedure calls. The other 1M25 procedure calls are unmodified compared to pre=/el=>.

The $A+ procedure calls shall )e per*ormed# see re*erenced procedures in TS 9<.-@? 9BCD

$9' $A+EGPRSERoutingEAreaEUpdateESession and $A+EPSENoti*ication.


/ The $A+EGPRSERoutingEAreaEUpdateESession procedure is called. The procedure returns as result

:$ontinue:.

/ Then the $A+EPSENoti*ication procedure is called. The procedure returns as result :$ontinue:.

$<' $A+EGPRSERoutingEAreaEUpdateE$ontext.

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.3. G'G% SGS* t" MME TracBi'g &rea U%#ate

The GnAGp "G"' to MM2 Trac#in rea pdate procedure is illustrated in 7iure 8.3.:=,.

ny steps descriptions that are from T" *3.+:+ J<K are shown as italic tet and remain unmodified. &n those stepdescriptions an M" stands for 2- new "G"' for new MM2- old "G"' for old GnAGp "G"'- GG"' for P=G?- and

@5/ for @"". The new MM2 behaves towards the old GnAGp "G"' always li#e a GnAGp 3G="G"'- reardless ofwhether the old GnAGp "G"' is a *G="G"' or a 3G="G"'.


14. U%#ate L"cati"' ReDuest

. Securit; %r"ce#ures

22. TracBi'g &rea U%#ate &cce%t

1!. +a'ce$ L"cati"'

1<. :u Re$ease +"66a'#

1. :u Re$ease +"6%$ete

23. TracBi'g &rea U%#ate +"6%$ete

UE e*"#eC MME G'G% SGS*

P*GA 7SS




. +reate Sessi"' ReDuest

13.+reate Sessi"' Res%"'se



R*+ CS+

(A) 11. P+E :'itiate# :P-+&* Sessi"' M"#iicati"'

P+R 8$#

MME

!. SGS* +"'te/t Res%"'se

4. SGS*+"'te/t ReDuest

. SGS* +"'te/t &cB'"$e#ge

Ser5i'gGA

1. +a'ce$ L"cati"'

20.+a'ce$ L"cati"' &cB

+1

1. Trigger t" start T&U %r"ce#ure

24. Pr"ce#ure as i' TS 23.401, ste%s 2 t" " igure !.4.2.2-1

0i1ure ='3',$%2 GnGp SGS" to 88 Trackin1 Area !pdate procedure

'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps ,3 and ,9 concern GTP

based "9A">.

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*. The 2 sends to the e'ode0 a Trac#in rea pdate /eDuest (last visited T&- P=TM"& "inature- old GT&-

2 1ore 'etwor# 1apability- active fla- 2P" bearer status- additional GT&- e%"&- '" seDuence number- '"=M1- %"&) messae toether with //1 parameters indicatin the "elected 'etwor# and the old

GMM2&.

&f the 2$s T&' indicates LGT&L or L/T=related TM"&L and the 2 holds a valid GT& then the old GT&indicates this valid GT&. &f the 2$s T&' indicates LP=TM"&L and the 2 holds a valid P=TM"& and related /&

then these two elements are indicated as the old GT&. Mappin a P=TM"& and an /& to a GT& is specified in

nne @.

&f the 2 holds a valid GT& and the old GT& indicates a GT& mapped from a P=TM"& and /&- then the 2

indicates the native GT&. &f the old GT& indicates a GT& mapped from a P=TM"& and /&- and the 2 has avalid P=TM"& sinature- the P=TM"& sinature shall be included.

The //1 parameter Lold GMM2&L ta#es its value from the identifier that is sinalled as the old GT&accordin to the rules above. 7or a combined MM2A"G"' the e'ode0 is confiured to route the MM2=code(s)

of this combined node to the same combined node. This e'ode0 is also confiured to route MM2=code(s) ofGT&s that are enerated by the 2$s mappin of the P=TM"&s allocated by the combined node. "uch an

e'ode0 confiuration may also be used for separate nodes to avoid chanin nodes in the pool caused by inter/T mobility.

'OT2 *H &n the scenario of this flow the 2$s T&' indicates LP=TM"&L and therefore the 2 indicates a P=TM"& asthe old GT&.

The last visited T& is included if the 2 has any in order to help the MM2 to produce a ood list of T&s forany subseDuent T ccept messae. "elected 'etwor# indicates the networ# that is selected. ctive fla is a

reDuest by 2 to activate the radio and ", bearers for all the active 2P" 0earers by the T procedure. The2P" bearer status indicates each 2P" bearer that is active within the 2. The 2$s &"/ capability is included in

the 2 1ore 'etwor# 1apability element.

&f the 2 has valid 2P" security parameters- the T /eDuest messae shall be interity protected by the '"=M1 in order to allow validation of the 2 by the MM2. e%"&- '" seDuence number and '"=M1

are included if the 2 has valid 2P" security parameters. '" seDuence number indicates the seDuential number

of the '" messae. %"& is included if the 2 indicates a GT& mapped from a P=TM"& in the informationelement Lold GT&L.

3. The e'ode0 derives the MM2 from the //1 parameters carryin the old GMM2& and the indicated "elected 'etwor#. &f that GMM2& is not associated with the e'ode0- or the GMM2& is not available- the e'ode0

selects the MM2 as described in clause ;.3.>.3 on LMM2 "election 7unctionL.

The e'ode0 forwards the T /eDuest messae toether with the T&S21G& of the cell from where it received

the messae and with the "elected 'etwor# to the MM2.

;. The new MM2 sends "G"' 1ontet /eDuest (old /&- P=TM"&- old P=TM"& "inature- 'ew "G"' ddress)

to the old "G"' to et the MM and P8P contets for the 2.

The new MM2 shall support functionality for &ntra 8omain 1onnection of /' 'odes to Multiple 1' 'odes-

i.e. the MM2 derives the old "G"' from the old /& and the old P=TM"& (or T55&).

?hen the internal structure of the pool area where the M" roamed from is not #nown- the new MM2 derives the

old "G"' from the old /& as described at clause 9.> in T" *3.+:+ J<K. 7or this case- the new MM2 derives an"G"' that it believes is the old "G"'. This derived "G"' is itself the old "G"'- or it is associated with the

same pool area as the actual old "G"' and it will determine the correct old "G"' from the P=TM"& (or T55&)

and relay the messae to that actual old "G"'.

9. &f the old "G"' is a *G="G"'H The old 9G/SGSN 0alidates the old P/TS! Signature and responds with an

appropriate error cause i* it does not match the 0alue stored in the old 9G SGSN. This should initiate the

securit" *unctions in the new SGSN. !* the securit" *unctions authenticate the S correctl"# the new SGSN shall

send an SGSN $ontext Request (old RA!# old PTS!# S 8alidated# New SGSN Address' message to the old

SGSN. S 8alidated indicates that the new SGSN has authenticated the S. !* the old P/TS! Signature was

0alid or i* the new SGSN indicates that it has authenticated the S# the old SGSN stops assigning SN%$P

N/P%U num)ers to downlin, N/P%Us recei0ed# and responds with SGSN $ontext Response ( $ontext# P%P

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$ontexts'. !* the S is not ,nown in the old SGSN# the old SGSN responds with an appropriate error cause. The

old SGSN stores New SGSN Address# to allow the old SGSN to *orward data pac,ets to the new SGSN. ach

P%P $ontext includes the SN%$P Send N/P%U Num)er *or the next downlin, N/P%U to )e sent in

ac,nowledged mode to the S# the SN%$P Recei0e N/P%U Num)er *or the next uplin, N/P%U to )e recei0ed

in ac,nowledged mode *rom the S# the GTP sequence num)er *or the next downlin, N/P%U to )e sent to the

S and the GTP sequence num)er *or the next uplin, N/P%U to )e tunnelled to the GGSN. The old SGSN starts

a timer and stops the transmission o* N/P%Us to the S. The new SGSN shall ignore the S Networ,$apa)ilit" contained in $ontext o* SGSN $ontext Response onl" when it has pre0iousl" recei0ed an S

Networ, $apa)ilit" in the Routing Area Request.

&f the old "G"' is a 3G="G"'H The old <G/SGSN 0alidates the old P/TS! Signature and responds with an

appropriate error cause i* it does not match the 0alue stored in the old SGSN. This should initiate the securit"

*unctions in the new SGSN. !* the securit" *unctions authenticate the S correctl"# the new SGSN shall send an

SGSN $ontext Request (!S!# old RA!# S 8alidated' message to the old <G/SGSN. S 8alidated indicates that

the new SGSN has authenticated the S. !* the old P/TS! Signature was 0alid or i* the new SGSN indicates

that it has authenticated the S# the old SGSN starts a timer. !* the S is not ,nown in the old SGSN# the old

<G/SGSN responds with an appropriate error cause.

!* the U with emergenc" )earers is not authenticated in the old (in a networ, supporting unauthenticated

Us' the old continues the procedure with sending a $ontext Response and starting the timer also when it

cannot 0alidate the $ontext Request.

The old <G SGSN responds with an SGSN $ontext Response ( $ontext# P%P $ontexts' message. or each

P%P context the old <G SGSN shall include the GTP sequence num)er *or the next uplin, GTP P%U to )e

tunnelled to the GGSN and the next downlin, GTP sequence num)er *or the next P%U to )e sent to the S.

ach P%P $ontext also includes the P%$P sequence num)ers i* P%$P sequence num)ers are recei0ed *rom the

old SRNS. The new <G/SGSN shall ignore the S Networ, $apa)ilit" contained in $ontext o* SGSN

$ontext Response onl" when it has pre0iousl" recei0ed an S Networ, $apa)ilit" in the Routing Area Request.

The GTP sequence num)ers recei0ed *rom the old <G/SGSN are onl" rele0ant i* deli0er" order is required *or

the P%P context (2oS pro*ile'.

'OT2 3H &n this step- the new L"G"'L shall be understood to be a new LMM2L and the old "G"' stores new

"G"' ddress- to allow the old "G"' to forward data pac#ets to the new L"=G? or e'ode0L. This step

describes both the *G and 3G "G"' variants due to combinin the *G or 3G "G"' to MM2 T into asinle procedure.

'OT2 ;H 7or the old "G"'- this step is unmodified compared to pre=/el=>. The MM2 (called new "G"' in above

description) must provide "G"' functionality which includes mappin P8P contets to 2P" bearer

information. "'81P- GTP and P81P seDuence numbers are not relevant for the MM2 as the networ#does not confiure usae of Ldelivery order reDuiredL- does not confiure ac#nowleded mode '"P&s

("'81P) and does not confiure loss less T/' P81P as described in clause Lcompatibility issuesL.

:. "ecurity functions may be eecuted. Procedures are defined in clause 9.3.,+ on "ecurity 7unction. &f the "G"'1ontet /esponse messae from the old "G"' did not include &M2&"B- the MM2 shall retrieve the M2 &dentity

(the &M2&"B) from the 2.

<. The new MM2 sends an "G"' 1ontet c#nowlede messae to the old "G"'. This in*orms the old SGSN thatthe new SGSN is read" to recei0e data pac,ets )elonging to the acti0ated P%P contexts. The old SGSN mar,s in

its context that the S$8+R association and the in*ormation in the GGSNs and the 1+R are in0alid. This

triggers the S$8+R# the GGSNs# and the 1+R to )e updated i* the S initiates a Routing area update

procedure )ac, to the old SGSN )e*ore completing the ongoing routing area update procedure.

&f the security functions do not authenticate the 2 correctly- then the Trac#in area update shall be rejected- andthe new MM2 shall send a reject indication to the old "G"'. The old SGSN shall continue as i* the SGSN

$ontext Request was ne0er recei0ed.

'OT2 9H in the italic tet of this step- new L"G"'L shall be understood as to be a new LMM2L. The MM2 needs to

map P8P contets received from GnAGp "G"' into 2P" bearer information. The GG"' address(es) andT2&8s map to the P8' G? address(es) and T2&8s respectively. . The MM2 maps P8P contets to 2P"

bearers one=to=one and it translates the release CC Eo" parameters to the 2P" bearer Eo" parameters.

'OT2 :H The "G"' operation is unmodified compared to pre=/el=>. The MM2 indicates reserved T2&8 and &P

address parameters from an "=G? to the old "G"' so that the old GnAGp "G"' can forward data

pac#ets when needed. The "=G? discards any pac#ets received from old GnAGp "G"'.

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'OT2 <H The Gn sinallin between the new MM2 and the old GnAGp "G"' has no capabilities to indicate &"/"upported or &"/ ctivated.

&f there is no P8P contet at all- the MM2 rejects the T /eDuest.

>. The old "G"' or the old /'1 forward data to the "=G? and the "=G? discards these data.

C. The new MM2 adopts the bearer contets received from the "G"' as the 2$s 2P" bearer contets to bemaintained by the new MM2. The new MM2 maps the P8P contets to the 2P" bearers ,=to=, and maps the

/elease CC Eo" parameter values of a P8P contet to the 2P" 0earer Eo" parameter values of an 2P" bearer asdefined in nne 2. The MM2 establishes the 2P" bearer(s) in the indicated order. The MM2 deactivates the

2P" bearers which cannot be established.

The MM2 verifies the 2P" bearer status received from the 2 with the bearer contets received from the old

"G"' and releases any networ# resources related to 2P" bearers that are not active in the 2. &f the 2 has noP8P contet- the MM2 rejects the T /eDuest.

The new MM2 selects a "ervin G? and sends an 1reate "ession /eDuest (&M"&- MM2 ddress and T2&8-

P8' G? address and T2&8- 2P" 0earer Eo"- servin networ# identity- M2 &dentity- ser 5ocation&nformation &2- 2 Time None &2- ser 1"G &nformation &2- /T type- M" &nfo 1hane /eportin support

indication- '/" (received from the "G"')) messae per P8' connection to the "ervin G?. The MM2 shallsend the servin networ# identity to the "ervin G?. The new MM2 does not indicate &"/ ctivated.

,+. The "ervin G? creates contets and informs the P8' G?(s) about the chane of the /T type. The "ervin

G? sends a Modify 0earer /eDuest ("ervin G? ddress and T2&8- /T type- M2 &dentity- ser 5ocation&nformation &2- 2 Time None &2- ser 1"G &nformation &2- M" &nfo 1hane /eportin support indication-

P8' 1harin Pause "upport indication) messae per P8' connection to the P8' G?(s) concerned.

,,. &f dynamic P11 is deployed- and /T type information needs to be conveyed from the P8' G? to the P1/7-

then the P8' G? shall send /T type information to the P1/7 by performin an &P=1' "essionModification procedure as defined in T" *3.*+3 J:K.

'OT2 >H The P8' G? does not need to wait for the P1/7 response- but continues in the net step. &f the P1/7response leads to an 2P" bearer modification the P8' G? should initiate a bearer update procedure.

,*. The P8' G? updates its contet field and returns a Modify 0earer /esponse (P8' G? address and T2&8-M"&"8'- 8efault bearer id- 1harin &d- M" &nfo 1hane /eportin ction ("tart) (if the P8' G? decides to

receive 2$s location information durin the session)- 1"G &nformation /eportin ction ("tart) (if the P8'G? decides to receive 2$s ser 1"G information durin the session)- P8' 1harin Pause 2nabled indication

(if P8' G? has chosen to enable the function)- P' /estriction) messae to the "ervin G?. The M"&"8' isincluded if the P8' G? has it stored in its 2 contet. ?hen the 2 moves from GnAGp "G"' to the MM2-

the P8' G? shall send the P' restriction of each bearer contet to the "ervin G?.

,3. The "ervin G? updates its contet and returns an 1reate "ession /esponse ("ervin G? address and T2&8 for

user plane- P8' G? address and T2&8- "ervin G? ddress and T2&8 for the control plane- 8efault bearer id-P' restriction) messae to the new MM2. The messae also includes M" &nfo 1hane /eportin ction

("tart) andAor 1"G &nformation /eportin ction ("tart) if they are included in step ,*. The "ervin G? shall

forward the received P' /estriction to the MM2.

,;. To ensure the release of all 2 resources in the GnAGp "G"' the new MM2 informs the @"" of the chane ofthe servin core networ# node by sendin an pdate 5ocation /eDuest (MM2 ddress- &M"&- M2 &dentity-

5/=7las- MM2 1apabilities- @omoenous "upport of &M" Boice over P" "essions) messae to the @"". TheM2 &dentity is included if the "G"' 1ontet /esponse did not contain the &M2&"B. 0ecause of interoperation

with an GnAGp "G"'- which the new MM2 identifies from the GTPv, 1ontet /esponse sinallin- the 5/=7las indicates L"inle=/eistration=&ndicationL. The MM2 capabilities indicate the MM2$s support for reional

access restrictions functionality. 7or L@omoenous "upport of &M" Boice over P" "essionsL- seeclause ;.3.9.>.

,9. &f the MM2 chanes- then the @"" cancels any old MM2. The @"" sends a 1ancel 5ocation (&M"&-1ancellation type) messae to the old MM2- with a 1ancellation Type set to pdate Procedure.

,:. The old MM2 removes the MM contet.

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The old MM2 releases any local bearer resources and it deletes the 2P" bearer resources by sendin 8elete"ession /eDuest (1ause- Operation &ndication) messaes to the "ervin G?. The operation &ndication fla is not

set- that indicates that the "=G? shall not initiate a delete procedure towards the P8' G?. &f &"/ is activatedthen the cause indicates to the old "=G? that the old "=G? shall delete the bearer resources on the other old 1'

node by sendin 8elete 0earer /eDuest messae(s) to that 1' node.

The old MM2 ac#nowledes with a 1ancel 5ocation c# (&M"&) messae.

,<. The @"" cancels any old "G"' node as the 5/=7las indicates L"inle=/eistration=&ndicationL. The 1SS

sends a $ancel +ocation (!S!# $ancellation T"pe' message to the old SGSN. The old SGSN remo0es the

contexts.

!* the timer started in step 5 is not running# the old SGSN remo0es the context. Htherwise# the contexts are

remo0ed when the timer expires. !t also ensures that the context is ,ept in the old SGSN *or the case the U

initiates another TAU procedure )e*ore completing the ongoing TAU procedure to the new .

'OT2 CH &n all other mobility scenarios a new 1' node initiates only cancellation of an old 1' node of the sametype via @"". &n this scenario here (GnAGp "G"' to MM2 T) the new MM2- by indicatin sinle

reistration- initiates in addition the cancellation of the old GnAGp "G"' via @"" to ma#e sure that anyP8P contets of the 2 are properly released. MM2 and "; "G"' release P8PAP8' contets based on

contet transfer sinallin.

,>. Hn receipt o* $ancel +ocation# i* the S is P $HNN$T% in the old SGSN# the old SGSN sends an !u

Release $ommand message to the old SRN$.

,C. 6hen the data/*orwarding timer has expired# the SRNS responds with an !u Release $omplete message.

*+. The old SGSN ac,nowledges with a $ancel +ocation Ac, (!S!' message.

*,. The new MM2 validates the 2$s presence in the (new) T. &f all chec#s are successful- the MM2 constructs an

MM contet for the 2- the @5/ ac#nowledes the pdate 5ocation by sendin pdate 5ocation c# (&M"&-"ubscription 8ata) messae to the new MM2. &f the pdate 5ocation is rejected by the @""- the MM2 rejects

the T /eDuest from the 2 with an appropriate cause sent in the T /eject messae to the 2.

**. &f due to reional subscription restrictions or access restrictions the 2 is not allowed to access the TH

= 7or 2s with onoin emerency bearer services- the new MM2 accepts the Trac#in rea pdate /eDuestand releases the non=emerency bearers as specified in clause 9.,+.3.

= 7or all other cases- the new MM2 rejects Trac#in rea pdate /eDuest with an appropriate cause to the 2

and notifies the @"" of rejection (details of this notification is stae 3 detail).

The new MM2 responds to the 2 with a Trac#in rea pdate ccept (GT&- T&=list- 2P" bearer status- '" seDuence number- '"=M1- &"/ ctivated) messae. /estriction list shall be sent to e'ode0 as e'ode0

handles the roamin restrictions and access restrictions in the &ntra 2=T/' case.

&f the Lactive flaL is set in the T /eDuest messae the user plane setup procedure can be activated in

conjunction with the T ccept messae. The procedure is described in detail in T" 3:.3++ J9K. The messaesseDuence should be the same as for the 2 triered "ervice /eDuest procedure specified in clause 9.3.;., from

the step when MM2 establishes the bearer(s). &f the active fla is set the MM2 may provide the e'ode0 with@andover /estriction 5ist. @andover /estriction 5ist is described in clause ;.3.9.< LMobility /estrictionsL. The

2P" bearer status indicates the active bearers in the networ#. The 2 removes any internal resources related to

bearers not mar#ed active in the received 2P" bearer status.

?hen receivin the T ccept messae and there is no &"/ ctivated indication the 2 shall set its T&' toLGT&L.

'OT2 ,+H&n the case of interoperation with GnAGp "G"'s- &"/ ctivated is never indicated by the MM2 as the"G"' does not support &"/- which the new MM2 reconises from Gn interface sinallin that does not

support &"/ indications.

*3. &f the GT& was included in the T ccept messae- the 2 ac#nowledes the messae by returnin aTrac#in rea pdate 1omplete messae to the MM2.

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?hen the Lctive flaL is not set in the T /eDuest messae and the Trac#in rea pdate was not initiatedin 21M=1O''21T28 state- the MM2 releases the sinallin connection with 2- accordin to clause 9.3.9.

'OT2 ,,HThe new MM2 may initiate 2=/0 establishment (see T" 3:.;,3 J3:K) after eecution of the securityfunctions (step 9)- or wait until completion of the T update procedure. 7or the 2- 2=/0

establishment may occur anytime after the T update reDuest is sent (step *).

*;. The taret MM2 calculates 2=M0/ as defined in clause ;.<.3. &f the local 2=M0/ provided by the MM2as defined in nne 2 is different from the correspondin derived 2=M0/- or the P'=M0/ mapped from

the subscribed M0/ is different from the subscribed P'=M0/- or the mapped subscribed Eo" profile (i.e.

the subscribed Eo" profile mapped accordin to nne 2) of the default bearer is different from the 2P""ubscribed Eo" profile received from the @""- the new MM2 shall initiate "ubscribed Eo" Modification

procedure as described in clause 9.;.*.*- 7iure 9.;.*.*=,.

&n the case of a rejected trac#in area update operation- due to reional subscription- roamin restrictions- or access

restrictions (see T" *3.**, J*<K and T" *3.++> J*>K) the new MM2 should not construct a bearer contet. &n the case ofreceivin the subscriber data from @""- the new MM2 may construct an MM contet and store the subscriber data for

the 2 to optimi!e sinallin between the MM2 and the @"". reject shall be returned to the 2 with an appropriatecause and the ", connection shall be released. pon return to idle- the 2 shall act accordin to T" *3.,** J,+K.

&f the new MM2 is unable to update the bearer contet in one or more P=G?s- the new MM2 shall deactivate thecorrespondin bearer contets as described in clause LMM2 &nitiated 8edicated 0earer 8eactivation ProcedureL. Thisshall not cause the MM2 to reject the trac#in area update.

The P%P $ontexts shall )e sent *rom old SGSN to new SGSN (' in a prioritiIed order# i.e. the most important

P%P $ontext *irst in the SGSN $ontext Response message. (The prioritiIation method is implementation dependent# )ut

should )e )ased on the current acti0it"'.

The new MM2 shall determine the Maimum P' restriction based on the received P' /estriction of each bearercontet from the P=G? and then store the new Maimum P' restriction value.

&f there are active 2P" G0/ bearers with maimum bitrate set to +- the MM2 should initiate MM2 &nitiated 8edicated

0earer 8eactivation (as specified in clause 9.;.;.*) to deactivate the related 2P" bearer 1ontet.

&f the new MM2 is unable to support the same number of active bearer contets as received from old "G"'- the newMM2 should use the prioritisation sent by old "G"' as input when decidin which bearer contets to maintain active

and which ones to delete. &n any case- the new MM2 shall first update all contets in one or more P=G?s and thendeactivate the contet(s) that it cannot maintain as described in clause LMM2 &nitiated 8edicated 0earer 8eactivation

ProcedureL. This shall not cause the MM2 to reject the trac#in area update.

'OT2 ,*H&f M" (2) was in PMM=1O''21T28 state the P8P 1ontets are sent already in the 7orward

/elocation /eDuest messae as described in clause L"ervin /'" relocation proceduresL ofT" *3.+:+ J<K.

&f the trac#in area update procedure fails a maimum allowable number of times- or if the MM2 returns a Trac#inrea pdate /eject (1ause) messae- the 2 shall enter 2MM 82/2G&"T2/28 state.

&f the pdate 5ocation c# messae indicates a reject- this should be indicated to the 2- and the 2 shall not accessnon=P" services until a successful location update is performed.

The $A+ procedure calls shall )e per*ormed# see re*erenced procedures in TS 9<.-@? 9BCD

$7' $A+EGPRSEP%PE$ontextE%isconnection# $A+EGPRSE%etach and $A+EPSENoti*ication.


/ The $A+EGPRSEP%PE$ontextE%isconnection procedure is called se0eral timesD once per P%P context.

The procedure returns as result :$ontinue:.

/ Then the $A+EGPRSE%etach procedure is called once. The procedure returns as result :$ontinue:.

/ Then the $A+EPSENoti*ication procedure is called once. The procedure returns as result :$ontinue:.

'OT2 ,3HThis 1M25 handlin is unmodified compared to pre=/el=>.

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'OT2 ,;H1M25 procedure calls 1* and 13 were omitted intentionally from this procedure since 2P" does notsupport 1M25 procedure calls.

.3. E-UTR&* t" GER&* &G 6"#e :'ter R&T ha'#"5er

.3..1 Ge'era$

The interoperation procedures describe information flows for GnAGp "G"'s and other 2P" networ# elements. ll

messaes between "G"' and MM2- between "G"' and 0""- between "G"' and @"" and between "G"' and P=G?(GG"' in T" ;3.,*C J>K) as well as the therein contained information elements are the same as specified for the

adeDuate T" ;3.,*C J>K procedures. These messaes and procedure step descriptions are ta#en from T" ;3.,*C J>K foreplanatory purposes only. These descriptions are in italic text and shall not be modified by the interoperation

procedures. &t cannot be assumed that the messaes and procedure step descriptions that are ta#en from T" ;3.,*C J>Kwill be updated when modifications or corrections are performed for T" ;3.,*C J>K. &f there are any discrepancies for

these messaes and procedure step descriptions T" ;3.,*C J>K ta#es precedence.

The messaes between the MM2 and any other node than the GnAGp "G"' as well as the therein contained information

elements are the same as specified in the main body of this technical specification for the &/T handover 2=T/'toAfrom G2/' AGb mode procedure (clauses 9.9.*.3 and 9.9.*.;). These descriptions are in bold italic text and shall

be modified simultaneously when clauses 9.9.*.3 or 9.9.*.; are updated.

.3..2 Pre%arati"' %hase

UE

S"urcee*"#eC Target CSS S"urce MME *e SGS* Ser5i'g GA 7SS



4. PS 7a'#"5er ReDuest

. PS 7a'#"5er ReDuest &cB'"$e#ge

<. "rar# Re$"cati"' Res%"'se

P* GA


!. Reser5ati"' " ra#i" res"urces i' target CSS

. Target CSS creates the Target CSS t" S"urce CSS Tra's%are't +"'tai'er



0i1ure ='3'-'&$%2 $!TRA" to GRA" AG4 7nter RAT 5 preparation phase

1. The source eNodeB decides to initiate an Inter RAT Handover to the target GERAN A/Gb mode !G" s#stem.

At this $oint both u$lin% and do&nlin% user data is transmitted via the 'ollo&ing( Bearers" bet&een )E and

*ource eNodeB+ GT, tunnels" bet&een *ource eNodeB+ *erving G- and ,N G-.

&f the 2 has an onoin emerency bearer service the source e'ode0 shall not initiate P" handover to G2/'.

NTE 1( The $rocess leading to the handover decision is outside o' the sco$e o' this s$eci'ication

!. The source eNodeB sends a Handover Re0uired ause+ Target *#stem Identi'ier+ *ource B** to Target B**

Trans$arent ontainer" message to the *ource 22E to re0uest the N to establish resources in the Target B**+ Target *G*N and the *erving G-. The bearers that &ill be sub3ect to data 'or&arding i' an#" are

identi'ied b# the ne& *G*N in a later ste$ see ste$ 4 belo&".

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The 5Target *#stem Identi'ier5 IE contains the identit# o' the target global cell Id.

'OT2 *H This step is unmodified compared to clause 9.9.*.3.*. The taret "G"' acts as the new "G"'.

< The old SGSN determines *rom the Target $ell !denti*ier that the t"pe o* hando0er is inter/RATmode hando0er.

!n case o* !nter/RAT mode !nter/SGSN PS hando0er# the old SGSN initiates the PS 1ando0er resource

allocation procedure )" sending a orward Relocation Request (!S!# Tunnel ndpoint !denti*ier $ontrol

Plane# RANAP $ause# Target $ell !denti*ier# $ontext# P%P $ontexts# Pac,et low !%# SN%$P J!%

parameters# ++$ J!% parameters# P%P $ontext Prioritisation# Source &SS To Target &SS Transparent

$ontainer RN partC in the &SS $ontainer# Source RN$ !d# SGSN Address *or control plane' message to the new

SGSN. !* the old SGSN supports PS hando0er procedures then it has to allocate a 0alid P! according to

clause 4.4.7 during the P%P $ontext acti0ation procedure. ach P%P context contains the GGSN Address *or

User Plane and the Uplin, T!% *or %ata (to this GGSN Address and Uplin, T!% *or %ata the old SGSN and

the new SGSN send uplin, pac,ets'.

The context contains securit" related in*ormation# e.g. supported ciphering algorithms as descri)ed in

TS 9B.->- 74C. The relation )etween GS and UTS securit" parameters is de*ined in TS <<.7-9 4-C#

The new SGSN selects the ciphering algorithm to use. This algorithm will )e sent transparentl" *rom the new

SGSN to the S. The !H8/U! parameter generated in the new SGSN and used# as input to the ciphering

procedure will also )e trans*erred transparentl" *rom the new SGSN to the S.

6hen the new SGSN recei0es the orward Relocation Request message the required P%P# # SN%$P and

++$ contexts are esta)lished and a new P/TS! is allocated *or the S. 6hen this message is recei0ed )" the

new SGSN it )egins the process o* esta)lishing P$s *or all P%P contexts.

6hen the new SGSN recei0es the orward Relocation Request message it extracts *rom the P%P $ontexts the

NSAP!s and SAP!s and P!s to )e used in the new SGSN. !* *or a gi0en P%P $ontext the new SGSN does not

recei0e a P! *rom the old SGSN# it shall not request the target &SS to allocate T& resources corresponding to

that P%P $ontext. !* none o* the P%P $ontexts *orwarded *rom the old SGSN has a 0alid P! allocated the new

SGSN shall consider this as a *ailure case and the request *or PS hando0er shall )e reected.

!n case when an SAP! and P! was a0aila)le at the old SGSN )ut the new SGSN does not support the same

SAP! and P! *or a certain NSAP! as the old SGSN# the new SGSN shall continue the PS hando0er procedure

onl" *or those NSAP!s *or which it can support the same P! and SAP! as the old SGSN. All P%P contexts *or

which no resources are allocated )" the new SGSN or *or which it cannot support the same SAP! and P! (i.e.

the corresponding NSAP!s are not addressed in the response message o* the target SGSN'# are maintained and

the related SAP!s and P!s are ,ept. These P%P contexts ma" )e modi*ied or deacti0ated )" the new SGSN 0ia

explicit S procedures upon RAU procedure.

The old SGSN shall indicate the current J!% parameter settings i* a0aila)le (i.e. those negotiated at the old

SGSN when the S was in AG) mode or recei0ed during a pre0ious inter/SGSN PS hando0er' to the new

SGSN. !* the new SGSN can accept all J!% parameters as indicated )" the old SGSN# the new SGSN shall create

a NAS container *or PS 1H indicating 3Reset to the old J!% parameters3. Htherwise# i* the new SGSN cannot

accept all J!% parameters indicated )" the old SGSN or i* no J!% parameters were indicated )" the old SGSN#

the new SGSN shall create a NAS container *or PS 1H indicating Reset (i.e. reset to de*ault parameters'.

'OT2 3H This step is unmodified compared to pre=/el=>. The "ource e'ode0 acts as the source /'1- "ourceMM2 acts as the old "G"'- and the P8' G? acts as the GG"'.

4. The new SGSN sends a PS 1ando0er Request (+ocal T++!# !S!# $ause# Target $ell !denti*ier# Source &SS to

Target &SS Transparent $ontainer (RN part'# P$s To &e Set Up +ist# NAS container *or PS 1H' message to

the target &SS. The new SGSN shall not request resources *or P$s associated with P%P contexts with

maximum )it rate *or uplin, and downlin, o* - ,)its or *or which the Acti0it" Status !ndicator within the P%P

$ontext indicates that no acti0e RA& exists on the source side.

5. &ased upon the A&2P *or each P$ the target &SS ma,es a decision a)out which P$s to assign radio

resources. The algorithm )" which the &SS decides which P$s that need resources is implementation speci*ic.

%ue to resource limitations not all downloaded P$s will necessaril" recei0e resource allocation. The target

&SS allocates T&s *or each P$ that it can accommodate.

>. The target &SS shall prepare the Target &SS to Source &SS Transparent $ontainer which contains a PS

1ando0er $ommand including the $N part (NAS container *or PS 1H' and the RN part (PS 1ando0er Radio

Resources'.

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@. Target &SS shall send the PS 1ando0er Request Ac,nowledge message (+ocal T++!# +ist o* Set Up P$s#

Target &SS to Source &SS Transparent $ontainer' message to the new SGSN. Upon sending the PS 1ando0er

Request Ac,nowledge message the target &SS shall )e prepared to recei0e downlin, ++$ P%Us *rom the new

SGSN *or the accepted P$s.

An" P%P contexts *or which a P$ was not esta)lished are maintained in the new SGSN and the related SAP!s

and P!s are ,ept. These P%P contexts ma" )e modi*ied or deacti0ated )" the new SGSN 0ia explicit S procedures upon the completion o* the routing area update (RAU' procedure.

?. The new SGSN passes the assigned list o* T!%s *or each P%P context *or which a P$ was assigned in the

RA& setup in*ormation ! in the orward Relocation Response ($ause# +ist o* Set Up P$s# Target &SS to

Source &SS Transparent $ontainer' in the &SS $ontainer# Tunnel ndpoint !denti*ier $ontrol Plane# SGSN

Address *or User Tra**ic# Tunnel ndpoint !denti*ier %ata !!' message to the old SGSN. The NSAP!s o* the

acti0e P%P $ontexts recei0ed in the orward Relocation Request message *or which the PS hando0er continues#

i.e. *or which resources are allocated *or the P$s in the target &SS# are indicated in this message.

The Tunnel ndpoint !denti*ier %ata !!# one in*ormation *or each P%P context# is the tunnel endpoint o* the new

SGSN and is used *or data *orwarding *rom the Source eNode&# 0ia the new SGSN# to the target &SS.

The new SGSN acti0ates the allocated ++$SN%$P engines as speci*ied in TS 44.->4 9<C *or an SGSN

originated Reset or 3Reset to the old J!% parameters3.

6hen the old SGSN recei0es the orward Relocation Response message and it decides to proceed with the

hando0er# the preparation phase is *inished and the execution phase will *ollow.

6. I' 5Indirect 7or&arding5 a$$lies+ the source 22E sends a reate Indirect ata 7or&arding Tunnel Re0uest

message ause+ *G*N Addresses" and TEIs" 'or ata 7or&arding" to the *erving G-. ause indicates

that the bearers" are sub3ect to data 'or&arding.

Indirect 'or&arding ma# be $er'ormed via a *erving G- &hich is di''erent 'rom the *erving G- used as the

anchor $oint 'or the )E.

6a. The *erving G- returns a reate Indirect ata 7or&arding Tunnel Res$onse ause+ *erving G-

Addresses" and TEIs" 'or ata 7or&arding" message to the target 22E. I' the *erving G- doesn5t

su$$ort data 'or&arding+ an a$$ro$riate cause value shall be returned and the *erving G- Addresses" and

TEIs" &ill not be included in the message.

'OT2 ;H This step is mostly unmodified compared to pre=/el=>. The "ource MM2 acts as the old "G"'- and theP8' G? acts as the GG"'.

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.3..3 E/ecuti"' %hase

UE

S"urcee*"#eC Target CSS S"urce MME *e SGS* Ser5i'g GA 7SS

P*GA


1. 7a'#"5er +"66a'#

2. 78 r"6 E-UTR&* +"66a'#


4. GER&* &G &ccess Pr"ce#ures

!. O: Res%"'se

. PS 7a'#"5er +"6%$ete

<. "rar# Re$"cati"' +"6%$ete

<a. "rar# Re$"cati"' +"6%$ete &cB'"$e#ge

. U%#ate PP +"'te/t ReDuest

11. U%#ate PP +"'te/t Res%"'se


. O: Res%"'se

12. O: *eg"ti"ati"' "r LL+ &M

12a. S&CM U& e/cha'ge re-esta$ish6e't a'# O: 'eg"tiati"' "r LL+ &CM)


irect "rar#i'g " #ata

13. R"uti'g &rea U%#ate %r"ce#ure

14. Re$ease Res"urce 14. e$ete Sessi"' ReDuest


1!. e$ete :'#irect ata "rar#i'g Tu''e$ ReDuestRes%"'se

:'#irect "rar#i'g " #ata

0i1ure ='3'-'3$%2 $!TRA" to GRA" AG4 mode 7nter RAT 5 eFecution phase

The source eNode& continues to recei0e downlin, and uplin, user plane P%Us.

,. The "ource MM2 completes the preparation phase towards "ource e'ode0 by sendin the messae @andover

1ommand (Taret 0"" to "ource 0"" Transparent 1ontainer (P" @andover 1ommand with /' part and 2P1 part)- 0earers "ubject to 8ata 7orwardin 5ist). The L0earers "ubject to 8ata forwardin listL may be included

in the messae and it shall be a list of $ddress(es) and T2&8(s) for user traffic data forwardin$ received fromtaret side in the preparation phase (7orward /elocation /esponse messae ("tep >)).

"ource e'ode0 initiate data forwardin for the bearers specified in the L0earers "ubject to 8ata 7orwardin5istL. The data forwardin oes directly to taret "G"' decided in the preparation phase.

!. The *ource eNodeB &ill give a command to the )E to handover to the Target Access *#stem via the message H 'rom E8)TRAN ommand. This message includes a trans$arent container including radio as$ect

$arameters that the Target B** has set8u$ in the $re$aration $hase RN $art". This message also includes the

9I and I:8)I $arameters received 'rom the Target *G*N E, $art".

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)$on the rece$tion o' the H 'rom E8)TRAN ommand message containing the Handover ommand

message+ the )E shall associate its bearer Is to the res$ective ,7Is based on the relation &ith the N*A,I

and shall sus$end the u$lin% transmission o' the user $lane data.

'OT2 ,H This step is unmodified compared to clause 9.9.*.3.3. The taret "G"' acts as the new "G"'.

3. Boid.

'OT2 *H The source e'ode0 does not send any /' contet towards the taret 0"".

4. The S executes the hando0er according to the parameters pro0ided in the message deli0ered in step 9. The

procedure is the same as in step > in clause 5.7.4.9 in TS 4<.79B ?C with the additional *unction o* association

o* the recei0ed P! and existing RA& !d related to the particular NSAP! as descri)ed in clause 4.4.7 in

TS 4<.79B ?C.

The 2 locally deactivates &"/ by settin its T&' from L/T=related TM"&L to LGT&L- if any 2P" bearercontet activated after the &"/ was activated in the 2 eists.

5@. A*ter accessing the cell using access )ursts and recei0ing timing ad0ance in*ormation *rom the &SS in step 9#

the S processes the NAS container and then sends one J!% Response message to the new SGSN. The S sends

this message immediatel" a*ter recei0ing the Pac,et Ph"sical !n*ormation message containing the timingad0ance or# in the s"nchronised networ, case# immediatel" i* the PS 1ando0er Access message is not required

to )e sent (see clause >.9 in TS 4<.79B ?C'.

Upon sending the J!% Response message# the S shall resume the user data trans*er onl" *or those NSAP!s *or

which there are radio resources allocated in the target cell. or NSAP!s using ++$ A% *or which radio

resources were not allocated in the target cell the S ma" request *or radio resources using the legac"

procedures.

NHT <D !* the new SGSN indicated Reset (i.e. reset to de*ault parameters' in the NAS container *or PS 1H

included in the 1ando0er *rom UTRAN $ommand message (UTRAN' or the 1ando0er *rom GRAN !u

$ommand message# in order to a0oid collision cases the mo)ile station ma" a0oid triggering J!%

negotiation *or an" ++$ SAP! used in ++$ A%# )ut wait *or the SGSN to do so (see step 79'. !n an"

case the mo)ile station ma" a0oid triggering J!% negotiation *or an" ++$ SAP! used in ++$ A&# )ut

wait *or the SGSN to do so (see step 79a'.

'OT2 ;H This step is unmodified compared to pre=/el=>. The messae L@O from 2=T/' 1ommandL acts as

the L@andover from T/' 1ommandL messae (T/') or the L@andover from G2/' &u1ommandL messae.

>. Upon reception o* the *irst correct R+$A$ )loc, (sent in normal )urst *ormat' *rom the S the target &SS

sends a PS 1ando0er $omplete (+ocal T++!# 1ando0er $omplete Status' message to in*orm the new SGSN that

the S has arri0ed in the target cell. ach uplin, N/P%U recei0ed )" the new SGSN 0ia the target &SS is then

*orwarded directl" to the GGSN.

timer in source MM2 is started to supervise when resources in "ource e'ode0 and "ource "ervin G? shall be released.

'OT2 9H This step is unmodified compared to pre=/el=>. The P8' G? acts as the GG"'.

?. Upon recei0ing the PS 1ando0er $omplete message# the new SGSN send a orward Relocation $omplete

message to the old SGSN to indicate completion o* the PS hando0er procedures. The old SGSN responds with a

orward Relocation $omplete Ac,nowledge message.

'OT2 :H This step is unmodified compared to pre=/el=>. The "ource MM2 acts as the old "G"'.

B77. The new SGSN sends an Update P%P $ontext Request (new SGSN Address# T!%# 2oS Negotiated' message

to the GGSN concerned. The GGSN updates the P%P context *ields and returns an Update P%P $ontext

Response (T!%' message. rom now on the GGSN sends new incoming downlin, !P pac,ets to the new SGSN

instead o* to the old SGSN.

The P8' G? shall include a 1harin &d to be used at the "G"' as the 1harin &8 for reportin usae for thisP8P contet. The P8' G? shall include the 1harin &d in the offline charin data.

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'OT2 <H This step is unmodified compared to pre=/el=>. The "ource MM2 acts as the old "G"'- and theP8' G? acts as the GG"'.

79. !* the new SGSN indicated Reset (i.e. reset to de*ault parameters' in the NAS container *or PS 1H included in

the 1ando0er *rom UTRAN $ommand message (UTRAN' or the 1ando0er *rom GRAN !u $ommand message#

then on receipt o* the PS 1ando0er $omplete the new SGSN initiates an ++$SN%$P J!% negotiation *or each

++$ SAP! used in ++$ A%. !n this case i* the SGSN wants to use the de*ault parameters# it shall send anempt" J!% $ommand. !* the new SGSN indicated 3Reset to the old J!% parameters3 in the NAS container *or PS

1H# no *urther J!% negotiation is required *or ++$ SAP!s used in ++$ A% onl".

'OT2 >H This step is unmodified compared to pre=/el=>. The messae L@O from 2=T/' 1ommandL acts asthe L@andover from T/' 1ommandL messae (T/') or the L@andover from G2/' &u

1ommandL messae.

79a. The new SGSN (re/'esta)lishes ++$ A& *or the P%P contexts which use ac,nowledged in*ormation

trans*er. %uring the exchange o* SA& and UA the SGSN shall per*orm ++$SN%$P J!% negotiation.

7<. The S sends a Routing Area Update Request (Hld P/TS!# Hld RA!# Hld P/TS! signature# Update T"pe'

message to the new SGSN in*orming it that the source cell )elongs to a new routing area. The S shall send this

message immediatel" a*ter message 5# see TS 9<.->- @C.

The new SGSN ,nows that a hando0er has )een per*ormed *or this S and can there*ore exclude the SGSN

context procedures which normall" are used within the RA Update procedure.

7or further descriptions of the /outin rea pdate procedure see T" ;3.,*C J>K- clauses 9.9.*.3 and 9.:.,.,.,.

'OT2 CH The / procedure is performed reardless if the routin area is chaned or not- as specified by

T" ;3.,*C J>K.

1;. -hen the timer started at ste$ 4 ex$ires+ the source 22E sends a Release Resources message to the source

eNodeB. The *ource eNodeB releases its resources related to the )E.

dditionally- the source MM2 deletes the 2P" bearer resources by sendin 8elete "ession /eDuest (1ause-

Operation &ndication) messaes to the "ervin G?. The operation &ndication fla is not set- that indicates to the

"ervin G? that it shall not initiate a delete procedure towards the P8' G?. The "ervin G? ac#nowledeswith 8elete "ession /esponse (1ause) messaes. &f &"/ is activated then the cause indicates to the old "ervinG? that the old "ervin G? shall delete the bearer resources on the other old 1' node by sendin 8elete

0earer /eDuest messae(s) to that 1' node.

,9. ?hen the timer started in step > epires and if resources for indirect forwardin have been allocated then they

are released.

.3.< GER&* &G 6"#e t" E-UTR&* :'ter R&T ha'#"5er

.3.<.1 Ge'era$

"ee clause 8.3.<.,.

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.3.<.2 Pre%arati"' %hase

0i1ure ='3'.'&$%2 GRA" AG4 mode to $!TRA" inter RAT 5 preparation phase

7. The source &SS decides to initiate a PS hando0er. At this point )oth uplin, and downlin, user data is

transmitted 0ia the *ollowingD T&s )etween S and source &SS# &SSGP P$s tunnel(s' )etween source &SS

and old SGSN# GTP tunnel(s' )etween old SGSN and GGSN.

'OT2 ,H The 2 acts as M"- and the P8' G? acts as the GG"'.

!. The source B** sends the message ,* handover Re0uired T<<I+ ause+ *ource ell Identi'ier+ Target

eNodeB Identi'ier+ *ource to Target Trans$arent ontainer RN $art"+ and active ,7s list" to *ource *G*N

to re0uest the N to establish resources in the Target eNodeB+ Target 22E and the *erving G-.

'OT2 *H The "ource "G"' acts as the Old "G"'.

'OT2 3H s an implementations option for supportin introduction scenarios with pre=/el> "G"'s the source 0""

may be confiured to use /'1 &8s instead of e'ode0 &8s to identify a taret e'ode0. The 1ause isrelayed transparently by the "G"' to the MM2 and the MM2 mappes the 0""GP cause code to an ",P

cause code. "ource to Taret Transparent 1ontainer carries information for the taret e'ode0. Thiscontainer is relayed transparently by the "G"'.

=. The *ource *G*N determines 'rom the 5Target eNodeB Identi'ier5 IE that the t#$e o' handover is IRAT ,* Handover to E8)TRAN. The *ource *G*N initiates the Handover resource allocation $rocedure b# sending

message 7or&ard Relocation Re0uest I2*I+ Target Identi'ication+ 22 ontext+ ,, ontext+ *G*N

Tunnel End$oint Identi'ier 'or ontrol ,lane+ *G*N Address 'or ontrol $lane+ *ource to Target

Trans$arent ontainer RN $art"+ ,ac%et 7lo& I+ *N, 9I $arameters+ << 9I $arameters" to the

target 22E. This message includes all ,, contexts that are established in the source s#stem indicating the

,7Is and the 9I $arameters related to those ,, ontexts+ and the u$lin% Tunnel end$oint $arameters o'

the *erving G-.

The ,, ontexts shall be sent in a $rioriti>ed order+ i.e. the most im$ortant ,, ontext 'irst. The

$rioriti>ation method is im$lementation de$endent+ but should be based on the current activit#.

NTE =( Assigning the highest $riorit# to the ,, context &ithout T7T could be done to get service continuit#

'or all ongoing services regardless o' the number o' su$$orted E,* bearers in the )E and net&or%.

The target 22E ma$s the ,, contexts to the E,* bearers 18to81 and ma$s the Release 66 ?o* $arameter

values o' a ,, context to the E,* Bearer ?o* $arameter values o' an E,* bearer as de'ined in Annex E.

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The 22E establishes the E,* bearers" in the indicated order. The 22E deactivates the E,* bearers &hich

cannot be established.

The 22 context contains securit# related in'ormation+ e.g. su$$orted ci$hering algorithms as described in

T* !6.@@ 1;C.

7or the ,, ontext &ith tra''ic class e0uals 5Bac%ground5+ the source *G*N shall indicate via the Activit#

*tatus Indicator IE that E,* bearers shall be established on the target side.

'OT2 ;H The "ource "G"' acts as the old "G"'.

;. The taret MM2 selects the "ervin G? as described under clause ;.3.>.* on L"ervin G? selection functionL.

The taret MM2 sends a 1reate "ession /eDuest messae (&M"&- MM2 Tunnel 2ndpoint &dentifier for 1ontrolPlane- MM2 ddress for 1ontrol plane- P8' G? address(es) for user plane- P8' G? 5 T2&8(s) for user

plane- P8' G? address for control plane- and P8' G? T2&8(s) for control plane- the Protocol Type over"9A">- P'=M0/- "ervin 'etwor#) per P8' connection to the "ervin G?. The Protocol Type over "9A">

is provided to "ervin G? which protocol should be used over "9A"> interface. 7or relocation from GnAGp"G"'- the taret MM2 provides the P'=M0/ if not received eplicitly from the GnAGp "G"' based on the

mappin from M0/ (as specified in nne 2) to the "ervin G?

;a. The *erving G- allocates its local resources and returns them in a reate *ession Res$onse *erving G-addresses" 'or user $lane+ *erving G- )< TEIs" 'or user $lane+ *erving G- Address 'or control $lane+

*erving G- TEI 'or control $lane" message to the target 22E.

D. The Target 22E &ill re0uest the Target eNodeB to establish the Bearers" b# sending the message Handover

Re0uest )E Identi'ier+ *1A, ause+ Integrit# $rotection in'ormation i.e. I and allo&ed Integrit#

,rotection algorithms"+ Encr#$tion in'ormation i.e. and allo&ed i$hering algorithms"+ E,* Bearers to

be setu$ list+ *ource to Target Trans$arent ontainer". The Target 22E shall not re0uest resources 'or

&hich the Activit# *tatus Indicator &ithin a ,, ontext indicates that no active bearer exists on the source

side 'or that ,, ontext.

7or each E,* bearer re0uested to be established+ 5E,* Bearers To Be *etu$5 IE shall contain in'ormation

such as I+ bearer $arameters+ Trans$ort <a#er Address+ Fata 'or&arding not $ossibleF indication and *1

Trans$ort Association. The Trans$ort <a#er Address is the *erving G- Address 'or user data+ and the *1

Trans$ort Association corres$onds to the u$lin% Tunnel End$oint Identi'ier ata. Fata 'or&arding not

$ossibleF indication shall be included i' the target 22E decides the corres$onding bearer &ill not be sub3ect

to data 'or&arding.

The taret MM2 shall not reDuest the taret e'ode0 to establish 2P" G0/ bearers with maimum bitrate set to+ and those 2P" bearers should not be included in the 2P" 0earers to be setup list and should be deactivated by

the MM2. 7or the remainin 2P" 0earer 1ontets the MM2 inores any ctivity "tatus &ndicator within an 2P"0earer 1ontet and reDuests the taret e'ode0 to allocate resources for all the remainin 2P" 0earer 1ontets.

The ci$hering and integrit# $rotection %e#s &ill be sent trans$arentl# 'rom the target eNodeB to the )E in the

Target to *ource Trans$arent ontainer+ and in the message ,* Handover ommand 'rom source B** to the

)E. This &ill then allo& data trans'er to continue in the ne& RAT/mode target cell &ithout re0uiring a ne&

AA Authentication and e# Agreement" $rocedure.

The MM2 shall compute the 2=M0/- as per clause ;.<.3- based on eplicit P'=M0/ values receivedfrom the GnAGp "G"'. &f eplicit P'=M0/ values are not received by the MM2- a local 2=M0/ shall be

included in the $2P" 0earers be setup list $ &2. The local 2=M0/ is described in nne 2.

Da. The Target eNodeB allocates the re0uest resources and returns the a$$licable $arameters to the Target 22E

in the message Handover Re0uest Ac%no&ledge Target to *ource Trans$arent ontainer+ E,* Bearers setu$

list+ E,* Bearers 'ailed to setu$ list". )$on sending the Handover Re0uest Ac%no&ledge message the target

eNodeB shall be $re$ared to receive do&nlin% GT, ,)s 'rom the *erving G- 'or the acce$ted E,*

bearers.

The taret e'ode0 shall inore it if the number of radio bearers in the "ource to Taret Transparent containerdoes not comply with the number of bearers reDuested by the MM2 and allocate bearers as reDuested by the

MM2.

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. I' 5Indirect 7or&arding5 a$$lies+ the target 22E sends a reate Indirect ata 7or&arding Tunnel Re0uest

message ause+ Target eNodeB Addresses"+ TEIs" 'or < user $lane" to the *erving G-. ause indicates

that the bearers" are sub3ect to data 'or&arding.

a. The *erving G- returns a reate Indirect ata 7or&arding Tunnel Res$onse ause+ *erving G-

Addresses" and TEIs" 'or ata 7or&arding" message to the target 22E. I' the *erving G- doesn5t

su$$ort data 'or&arding+ an a$$ro$riate cause value shall be returned and the *erving G- Addresses" andTEIs" &ill not be included in the message.

. The Target 22E sends the message 7or&ard Relocation Res$onse ause+ <ist o' *et )$ ,7s+ 22E

Tunnel End$oint Identi'ier 'or ontrol ,lane+ B**G, cause+ 22E Address 'or control $lane+ Target to

*ource Trans$arent ontainer+ Addresses" and TEIs" 'or ata 7or&arding" to the *ource *G*N.

&f $8irect 7orwardin$ is applicable- then the &2s $ddress(es) and T2&8(s) for 8ata 7orwardin$ contains the 85GTP= tunnel endpoint parameters to the e'ode0. &f $&ndirect 7orwardin$ applies the &2s $ddress(es) and

T2&8(s) for 8ata 7orwardin$ contain the 85 GTP= tunnel endpoint parameters to the "ervin G?.

'OT2 9H The "ource "G"' acts as the old "G"'.

.3.<.3 E/ecuti"' %hase

Ser5i'g GA

irect "rar#i'g " #ata

UES"urceCSS

Targe e*"#eC 8$# SGS* Target MME

P GA

U%$i'B a'# "'$i'B User P$a'e

1. PS 78 ReDuire# &cB'"$e#ge

2. PS 7a'#"5er +"66a'#



3. "rar# SR*S +"'te/t

3a. "rar# SR*S +"'te/t &cB

!. 78 t" E-UTR&* +"6%$ete

. 7a'#"5er *"ti;

. "rar# Re$"cati"' +"6%$ete

a. "rar# Re$"cati"' +"6 $ete &cB'"$e# e

11. CSS PacBet $" e$ete Pr"ce#ure

U%$i'B a'# "'$i'B User P$a'e

< M"#i; Ceare ReDuest


(A)


a. M"#i; Cearer Res%"'s


:'#irect "rar#i'g" #ata

11. e$ete :'#irect ata "rar#i'g ReDuestRes%"'se

7SS

,3. Procedure as in T" *3.;+,- ste s * to < of 7i ure 9.;.*.*=,

0i1ure ='3'.'3$%2 GRA" AG4 mode to $!TRA" 7nter RAT 5 eFecution phase

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'OT2 ,H 7or a PM&P=based "9A">- procedure steps () are defined in T" *3.;+* J*K. "teps C and Ca concern GTP based "9A">.

The old "G"' continues to receive downlin# and uplin# user plane P8s.

?hen old "G"' receives the 7orward /elocation /esponse messae it may start downlin# '=P8 relay and

duplication to the taret e'ode0- and the taret e'ode0 may start blind transmission of downlin# user data towards the

2 over the allocated radio channels.

1. The *ource *G*N com$letes the $re$aration $hase to&ards *ource B** b# sending the message ,* H

Re0uired Ac%no&ledge T<<I+ <ist o' *et )$ ,7s+ Target to *ource Trans$arent ontainer". This message

includes all ,7Is that could be established on the Target side.

Be'ore sending the ,* Handover Re0uired Ac%no&ledge message+ the source *G*N ma# sus$end do&nlin%

data trans'er 'or an# ,, contexts.

Be'ore sending the ,* Handover ommand message to the )E the source B**+ ma# tr# to em$t# the

do&nlin% B** bu''er 'or an# B** ,7s.

'OT2 *H The "ource "G"' acts as the old "G"'.

!. The *ource B** &ill command the )E to handover to the target eNodeB via the message ,* Handover

ommand. The access s#stem s$eci'ic message to )E includes a trans$arent container including radio as$ect

$arameters that the Target eNodeB has set8u$ in the $re$aration $hase.

3. There is no /' contet transfer durin inter /T handovers with 2=T/'. &f the source "G"' oriinates

any "/'" contets the MM2 ac#nowledes the receipt towards the "G"' and inores the messae content.

;. The )E moves to the E8)TRAN and $er'orms access $rocedures to&ard Target eNodeB.

D. -hen the )E has got access to Target eNodeB it sends the message H to E8)TRAN om$lete. The )E

shall im$licitl# derive the E,* bearers 'or &hich an E8RAB &as not established 'rom the ,* Handover

ommand and deactivate them locall# &ithout an ex$licit NA* message at this ste$.

. -hen the )E has success'ull# accessed the Target eNodeB+ the Target eNodeB in'orms the Target 22E b#sending the message Handover Noti'#.

pon receipt of the @andover 'otify messae the taret MM2 starts a timer if the taret MM2 applies indirect

forwardin.

<. Then the Taret MM2 #nows that the 2 has arrived to the taret side and Taret MM2 informs the old "G"'

by sendin the 7orward /elocation 1omplete () messae. The old "G"' will also ac#nowlede that information.?hen the 7orward /elocation 1omplete messae has been received and there is no loner any need for the Old

"G"' to forward data- the old "G"' stops data forwardin. timer in old "G"' is started to supervise whenresources shall be released.

4. The Target 22E &ill no& com$lete the Handover $rocedure b# in'orming the *erving G- 'or *erving G-

relocation this &ill be the Target *erving G-" that the Target 22E is no& res$onsible 'or all the E,*

bearers the )E have established. This is $er'ormed in the message 2odi'# Bearer Re0uest ause+ 22ETunnel End$oint Identi'ier 'or ontrol ,lane+ E,* Bearer Is"+ 22E Address 'or ontrol ,lane+ eNodeB

Addresses" and TEIs" 'or )ser Tra''ic 'or the acce$ted E,* bearers+ ,N G- addresses and TEIs 'or

GT,8based *D/*4" or GRE %e#s 'or ,2I,8based *D/*4" at the ,N G-s" 'or u$lin% tra''ic and RAT t#$e"

$er ,N connection.

In case an# E,* bearers are to be released the 22E triggers the bearer release $rocedure as s$eci'ied in

clause D.;.;.!. I' the *erving G- receives a < $ac%et 'or a non8acce$ted bearer+ the *erving G- dro$s the

< $ac%et and does not send a o&nlin% ata Noti'ication to the 22E.

'OT2 3H The tet reardin LTaret "ervin G?L shall be inored.

6. The *erving G- 'or *erving G- relocation this &ill be the Target *erving G-" in'orms the ,N G-s" the

change o'+ 'or exam$le+ 'or *erving G- relocation or the RAT t#$e+ that e.g. can be used 'or charging+ b#sending the message 2odi'# Bearer Re0uest $er ,N connection. *erving Net&or% should be included in this

message i' it is received in ste$ ;. 7or *erving G- relocation+ the *erving G- allocates < TEIs on *D/*4

even 'or non8acce$ted bearers. The ,N G- must ac%no&ledge the re0uest &ith the message 2odi'# Bearer

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Res$onse A,N Restriction". -hen the )E moves 'rom Gn/G$ *G*N to the 22E+ the ,N G- shall send

the A,N restriction o' each bearer context to the *erving G-.

I' , in'rastructure is used+ the ,N G- in'orms the ,R7 about the change o'+ 'or exam$le+ the RAT

t#$e.

The Modify 0earer /esponse also indicates the identity of the default bearer and the 1harin &d towards the

"=G?.

'OT2 ;H The tet reardin LTaret "ervin G?L shall be inored.

1@. The *erving G- 'or *erving G- relocation this &ill be the Target *erving G-" ac%no&ledges the user $lane

s&itch to the Target 22E via the message 2odi'# Bearer Res$onse ause+ *erving G- Tunnel End$oint

Identi'ier 'or ontrol ,lane+ *erving G- 'or *erving G- relocation this &ill be the Target *erving G-"

Address 'or ontrol ,lane+ ,rotocol on'iguration $tions+ ,N G- addresses and TEIs 'or GT,8based

*D/*4" or GRE %e#s 'or ,2I,8based *D/*4" at the ,N G-s" 'or u$lin% tra''ic+ A,N Restriction".The

*erving G- shall 'or&ard the received A,N Restriction to the 22E. At this stage the user $lane $ath is

established 'or all bearers bet&een the )E+ Target eNodeB+ *erving G- 'or *erving G- relocation this &ill

be the Target *erving G-" and ,N G-.

&n addition- the Modify 0earer /esponse indicates the identity of the default bearer towards the MM2.

11. -hen the timer started in ste$ ex$ires the *ource *G*N &ill clean8u$ all its resources to&ards *ource B**

b# $er'orming the B** ,ac%et 7lo& elete $rocedure.

?hen the timer started in step : epires the taret MM2 releases the resources that have been allocated forindirect forwardin.

'OT2 9H The tet reardin LTaret "ervin G?L shall be inored.

1!. The RAN triggers the )E to initiate a Trac%ing Area )$date $rocedure &ith the target 22E. It is RAN

'unctionalit# to $rovide the E2 NNETE )E &ith the trigger in'ormation.

The target 22E %no&s that an IRAT Handover has been $er'ormed 'or this )E as it received the bearer

contexts" b# handover messages and there'ore the target 22E $er'orms onl# a subset o' the TA u$date $rocedure+ s$eci'icall# it excludes the context trans'er $rocedures bet&een source *G*N and target 22E.

The taret MM2 ets the subscribed 2=M0/ value and the subscribed P'=M0/ value from the @""durin the T update procedure.

,3. The taret MM2 calculates 2=M0/ as defined in clause ;.<.3. &f this calculated value is different from the

2=M0/ computed durin step :- or the P'=M0/ mapped from the subscribed M0/ is different from the

subscribed P'=M0/- or the mapped subscribed Eo" profile (i.e. the subscribed Eo" profile mappedaccordin to nne 2) of the default bearer is different from the 2P" "ubscribed Eo" profile received from the

@""- the new MM2 shall initiate "ubscribed Eo" Modification procedure as described in clause 9.;.*.*- 7iure9.;.*.*=,

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&''e/ E ('"r6ati5e)Ma%%i'g etee' EPS a'# Re$ease "S %ara6eters

This anne specifies how the Eo" parameter values of an 2P" bearer are mapped toAfrom the /elease CC Eo" parametervalues of a P8P contet in P8' G?- ";="G"' and MM2.

?ithin this specification- different names are used for the Eo" parameters of a P8P contet e.. L/CC Eo" profileL andL/CC Eo" parametersL- but nevertheless the whole Eo" &2 as described in T" *;.++> J;<K is referred to includin the

/CC and /C<AC> Eo" attributes. This means that the MM2 performs Eo" mappin- populates and forwards both /CCand /C<AC> Eo" attributes towards the 2 in ", mode- if the 2 supports AGb mode or &u mode or both. The MM2

also performs Eo" mappin- populates and forwards both /CC and /C<AC> Eo" attributes also on Gn when deployed inthe interoperation scenarios as listed in nne 8- clause 8.*. The ";="G"' performs Eo" mappin- populates and

forwards either both /CC and /C<AC> Eo" attributes or only /C<AC> Eo" attributes towards the 2 in &u mode and

AGb mode. The P=G? performs Eo" mappin- populates and forwards both /CC and /C<AC> Eo" attributes over

GnAGp when deployed in the interoperation scenarios as listed in nne 8- clause 8.*.

The followin mappin rules holdH

= There is a one=to=one mappin between an 2P" bearer and a P8P contet.

= ?hen 2P" bearer Eo" parameters are mapped to /elease CC Eo" parameters the pre=emption capability and the

pre=emption vulnerability information of the 2P" bearer /P are inored and the priority of the 2P" bearer

parameter /P is mapped to the /elease CC bearer parameter /P- as described in table 2.,.

Ta4le '%2 8appin1 of PS 4earer ARP to Release // 4earer parameter ARP

PS>earer ARP Priority *alue

Release // 4earer parameter ARP *alue

1 t" 7 1

71 t" M 2

M1 t" 1! 3

?hen /elease CC Eo" parameters are mapped to 2P" bearer Eo" parameters the pre=emption capability and the pre=emption vulnerability information of the 2P" bearer /P are set based on operator policy in the entity that

performs the mappin. The /elease CC bearer parameter /P is mapped to the priority level information of the2P" bearer parameter /P as described in table 2.*.

Ta4le '&2 8appin1 of Release // 4earer parameter ARP to PS 4earer ARP

Release // 4earer parameter ARP *alue

PS>earer ARP Priority *alue

1 1

2 71

3 M1

The values of @ (hih priority) and M (medium priority) can be set accordin to operator reDuirements to ensure proper treatment of users with hiher priority level information. The minimum value of @ is ,. The minimum

value of M is @S,.

7rom /elease C onwards- the priority of the 2P" bearer parameter /P is mapped one=to=one toAfrom the

2volved /P parameter of a P8P contet- if the networ# supports this parameter.

'OT2 ,H The settin of the values for @ and M may be based on the "G"' mappin from the /elease CC bearer

parameter /P to the /P parameter that is used for T/'AG2/'.

'OT2 *H fter a handover from T/'AG2/' to 2=T/' the /P parameter of the 2P" bearer can be

modified by the P=G? to re=assin the appropriate priority level- pre=emption capability and pre=emption

vulnerability settin.

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'OT2 3H mappin from the 2P" bearer parameter /P to the /elease CC bearer parameter /P is not reDuiredfor a P=G? when connected to an "G"' via GnAGp as any chane of the bearer /P parameter may et

overwritten by the "G"' due to subscription enforcement. @owever- the P=G? should not combineservices with different 2P" bearer /P values onto the same P8P contet to enable a modification of the

bearer /P without impactin the assinment of services to bearers after a handover to 2=T/'.

= The 2P" bearer parameters G0/ and M0/ of a G0/ 2P" bearer are mapped one=to=one toAfrom the /elease CC bearer parameters G0/ and M0/ of a P8P contet associated with Traffic class $conversational$ or $streamin$.

= ?hen 2P" bearer Eo" parameters are mapped to /elease CC Eo" parameters the /elease CC bearer parameter

M0/ of P8P contets associated with Traffic 1lass $interactive$ or $bac#round$ is set eDual to the value of theauthori!ed P'=M0/. &f the P'=M0/ is modified while the 2 accesses the 2P" throuh 2=T/'- the

2 shall also set the /elease CC bearer parameter M0/ to the new P'=M0/ value for all non=G0/ P8Pcontets of this P8' connection. The P=G? shall enforce the P'=M0/ across all P8P contets with Traffic

1lass $interactive$ and $bac#round$ for that P'. The MM2 or ";="G"' may attempt to transfer P'=M0/and 2=M0/ to a GnAGp "G"'

= ?hen /elease CC Eo" parameters are mapped to 2P" bearer Eo" parameters the M0/ for the correspondinP' shall be set eDual to the M0/ value of the subscribed Eo" profile. t handover from a GnAGp "G"' the

MM2 or ";="G"' shall provide this P'=M0/ value- if not eplicitly received from the GnAGp "G"'- to the

"ervin G? and the P8' G? for each P8' connection. &t is reDuired that the subscribed M0/ in the@5/A@"" is set to the desired P'=M0/ value for all subscribed P's which may lead to a selection of aP=G?. The 2 derives the P'=M0/ from the value of the M0/ of a P8P contet created by the P8P

1ontet ctivation Procedure as described in T" *3.+:+ J<K.

'OT2 9H &f the pre=/el=> 2 with the updated subscribed M0/ is connected to a GG"'- the GG"' can

downrade the M0/ of the P8P contets based on either local policy or P11 (where the M0/ per E1&information is provided to the P127).

'OT2 :H 7rom /elease C onwards- the P'=M0/ is available on GnAGp.

= 7or handover from a GnAGp "G"' and if the MM2 does not receive M0/ values from the GnAGp "G"'- the

MM2 provides a local 2=M0/ to the e'ode0 until MM2 ets the 2P" subscribed 2=M0/. ?hen the

MM2 ets the subscribed 2=M0/ value from the @""- it calculates the 2=M0/ (2=M0/RM&'(subscribed 2=M0/- sum P'=M0/ of all active P's)). Then it compares this value with the local 2=

M0/ and if the local 2=M0/ is different from the correspondin derived 2=M0/- the MM2 initiates@"" &nitiated "ubscribed Eo" Modification procedure to notify the derived 2=M0/ to the e'ode0.

'OT2 <H The local 2=M0/ may be for eample based on the summin up of the P'=M0/ values of all

active P's of the 2 or on internal confiuration.

= standardi!ed value of the 2P" bearer parameter E1& is mapped one=to=one toAfrom values of the /elease CC

parameters Traffic 1lass- Traffic @andlin Priority- "inallin &ndication- and "ource "tatistics 8escriptor asshown in Table 2.3.

'OT2 >H ?hen mappin to E1&R* or E1&R3- the /elease CC parameter Transfer 8elay is used in addition to the

four /elease CC parameters mentioned above.

= ?hen 2P" bearer Eo" parameters are mapped to /elease CC Eo" parameters the settin of the values of the/elease CC parameters Transfer 8elay and "8 2rror /atio is derived from the correspondin E1&$s Pac#et

8elay 0udet and Pac#et 5oss /ate- respectively. ?hen Pac#et 5oss /ate parameter is further mapped to

/elease CC Eo" parameter /eliability 1lass (T" *3.,+< J9CK- table <)- the /esidual 02/ is considered VR *W,+=;

.

lso when /elease CC Eo" parameters are mapped to 2P" bearer Eo" parameters the values of the /elease CC parameter "8 2rror /atio are inored.

= The settin of the values of all other /elease CC Eo" is based on operator policy pre=confiured in the MM2 and

";="G"'.

= &n networ#s that support mobility from 2=T/' to T/'AG2/'- if the 2 has indicated support of

T/' or G2/'- the 2P" networ# shall provide the 2 with the /elease CC Eo" parameters in addition to

the 2P" bearer Eo" parameters within 2P" bearer sinallin.

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Ta4le '32 8appin1 4et#een standardied D97s and Release // DoS parameter values

D97Traffic9lass

Trafficandlin1Priority

Si1nallin17ndication

SourceStatistics=escriptor

1 +"'5ersati"'a$ *& *& S%eech

2 +"'5ersati"'a$ *& *&

U'B'"'

(*8TE 1)

3 +"'5ersati"'a$ *& *&U'B'"'(*8TE 2)

4 Strea6i'g *& *&U'B'"'(*8TE 3)

! :'teracti5e 1 es *&

:'teracti5e 1 *" *&

:'teracti5e 2 *" *&

< :'teracti5e 3 *" *&

CacBgr"u'# *& *& *&

*8TE1 Ahe' +: 2 is 6a%%e# t" Re$ease "S %ara6eter 5a$ues, the Tra'sere$a; %ara6eter is set t" 1!0 6s. Ahe' Re$ease "S %ara6eter 5a$uesare 6a%%e# t" a +:, +: 2 is use# "r c"'5ersati"'a$u'B'"' i theTra'ser e$a; %ara6eter is greater "r eDua$ t" 1!0 6s.

*8TE2 Ahe' +: 3 is 6a%%e# t" Re$ease "S %ara6eter 5a$ues, the Tra'sere$a; %ara6eter is set t" <0 6s as the $"est %"ssi$e 5a$ue, acc"r#i'g t"TS 23.10 J!K. Ahe' Re$ease "S %ara6eter 5a$ues are 6a%%e# t" a+:, +: 3 is use# "r c"'5ersati"'a$u'B'"' i the Tra'ser e$a;%ara6eter is $"er tha' 1!0 6s.

*8TE 3 Ahe' +: 4 is 6a%%e# t" Re$ease "S %ara6eter 5a$ues, it is 6a%%e# t"Strea6i'gU'B'"' a'# the SU Err"r Rati" is set t" 10-! as the c$"sesta5ai$a$e 5a$ue acc"r#i'g t" TS 23.10 J!K. Ahe' Re$ease "S%ara6eter 5a$ues are 6a%%e# t" a +:, Strea6i'gU'B'"' a'#Strea6i'gS%eech are "th 6a%%e# t" +: 4.

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&''e/ ('"r6ati5e)e#icate# earer acti5ati"' i' c"6i'ati"' ith the #eau$t

earer acti5ati"' at &ttach a'# UE reDueste# P*c"''ecti5it; %r"ce#ures

&t shall be possible for the P8' G? to initiate the activation of dedicated bearers (as specified in clause 9.;.,) as part ofthe attach procedure (as specified in clause 9.3.*.,) or as part of the 2 reDuested P8' connectivity procedure (as

specified in clause 9.,+.*) over 2=T/'. @owever- the result of the dedicated bearer activation procedure shall beloically separate from the ttach procedure- meanin that the result of the ttach procedure is not dependent on

whether the 8edicated bearer activation procedure succeeds or not. On the other hand- the dedicated bearer activationmay only be rearded as successful if the ttach procedure completes successfully.

The messaes of the 8edicated bearer activation can be sent toether with the messaes of the ttach procedure or ofthe 2 reDuested P8' connectivity procedure (i.e. ttach accept or P8' 1onnectivity ccept)- as shown in the 7iure

and eplanation below.

On the ", and u interfaces the messaes for the default bearer activation at ttach and 2 reDuested P8'

connectivity procedures and for the 8edicated 0earer ctivation procedure are combined into a sinle messae. &f theMM2 has sent an ttach ccept messae towards the e'ode0- and then the MM2 receives a 1reate 0earer /eDuest

before the MM2 receives the ttach 1omplete messae- the MM2 shall wait for the ttach procedure to complete before the MM2 continues with 8edicated 0earer ctivation procedure.

&t shall be possible that multiple dedicated bearers can simultaneously be activated in the sinallin flow shown below.

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1. P* +"''ecti5it; ReDuest

. +reate Sessi"' Res%"'se a'#Create Bearer Request(s)


. S1-&P Cearer Setu% ReDuest(i'c$. *&S %arts "r "th P* +"''ecti5it; &cce%t a'# Dedicated Bearer Setup Request(s))

irst U%$i'B ata





13. M"#i; Cearer ReDuest a'#Create Bearer Response(s)

irst "'$i'B ata

irst "'$i'B ata

1!. *"ti; ReDuest

1. *"ti; Res%"'se

(A)

Create Bearer Response(s)


4. :P-+&* Sessi"' Esta$ish6e't

1a. &ttach ReDuest

&ttach %r"ce#ure u'ti$ U%#ate L"cati"' &cB

a. S1-&P :'itia$ +"'te/t Setu% ReDuest(i'c$. *&S %arts "r "th &ttach &cce%t a'# Dedicated Bearer Setup Request(s))

10a. S1-&P :'itia$ +"'te/t Setu% Res%"'se

10. S1-&P Cearer Setu% Res%"'se

!. +reate Sessi"' Res%"'se a'#Create Bearer Request(s)

11. irect Tra'ser 12. &ttach ("r P* +"''ecti5it;) +"6%$ete Sessi"' Ma'age6e't Res%"'se

0i1ure 0'%2 =edicated 4earer activation in com4ination #ith the default 4earer activation at attach or! re:uested P=" connectivity

'OT2 ,H Parameters related to dedicated bearer activation are written in italics.

7iure 7., describes the activation of dedicated bearer(s) in combination with the default bearer activation either as part

of the ttach procedure (with specific steps ,a- <a- ,+a) or as part of the 2 reDuested P8' connectivity procedure(with specific steps ,b- <b- ,+b). The followin steps below reDuire special attentionH

9. (On the P=G?="=G? interface) 1reate "ession /esponse messae of the ttach procedure or 2=reDuested

P8' connectivity procedure is combined with 1reate 0earer /eDuest messae of the 8edicated 0earerctivation Procedure

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:. (On the "=G?=MM2 interface) 1reate "ession /esponse messae of the ttach procedure or 2=reDuested P8'connectivity procedure is combined with the 1reate 0earer /eDuest messae of the 8edicated 0earer ctivation

Procedure

<a. 7or ttach procedureH &f the MM2 receives a 1reate "ession /esponse messae combined with a 1reate 0earer

/eDuest messae- the MM2 shall send the ",=P &nitial 1ontet "etup /eDuest messae to the e'ode0-

includin the '" parts for both the ttach ccept messae of the ttach procedure and the 0earer "etup/eDuest of the 8edicated 0earer ctivation Procedure.

'OT2 *H The MM2 shall not send a 0earer "etup /eDuest messae of a new 8edicated 0earer ctivation

procedure to the e'ode0 before sendin the ttach ccept messae of the ttach procedure to thee'ode0. &f the MM2 has already sent the ttach ccept messae of the ttach procedure to the e'ode0-

the MM2 shall wait for the ttach 1omplete messae to arrive before sendin a separate 0earer "etup/eDuest of a 8edicated 0earer ctivation procedure.

<b. 7or 2 reDuested P8' connectivity procedureH &f the MM2 receives a 1reate "ession /esponse messaecombined with a 1reate 0earer /eDuest messae- the MM2 shall send the ",=P 0earer "etup /eDuest messae

to the e'ode0- includin the '" parts for both the P8' 1onnectivity ccept messae and the 0earer "etup/eDuest of the 8edicated 0earer ctivation Procedure.

>=C. The radio bearer establishment of the default and dedicated bearer(s) is performed in the same //1 messae.

,+a. 7or ttach procedureH The e'ode0 sends the ",=P &nitial 1ontet "etup /esponse messae to the MM2.

The MM2 shall be prepared to receive this messae either before or after- some or all- of the plin# '" plin#Transport messaes sent in step ,*.

,+b. 7or 2 reDuested P8' connectivity procedureH The e'ode0 sends the ",=P 0earer "etup /esponsemessae to the MM2.

The MM2 shall be prepared to receive this messae either before or after- some or all- of the plin# '" plin#Transport messaes sent in step ,*.

,,. 7or the ttach procedureH The 2 sends the e'ode0 a 8irect Transfer messae containin the ttach 1omplete

("ession Manaement /esponse for the 8efault 0earer) messae as response of the attach procedure- and 8irectTransfer messaes containin the "ession Manaement /esponses of the dedicated bearer setup procedure.

7or the 2 reDuested P8' connectivity procedureH The 2 '" layer builds a P8' 1onnectivity 1omplete

("ession Manaement /esponse) for the 8efault 0earer ctivation and 8edicated 0earer ctivation Procedures.The 2 then sends 8irect Transfer (P8' 1onnectivity 1omplete) messae to the e'ode0.

The '" messaes to establish the 2P" bearers shall be handled individually by the 2 and be sent in separate//1 8irect Transfer messaes.

,*. The e'ode0 sends an plin# '" Transport messae to the MM2- which contains the '" messaes from the//1 messae in step ,,. There may be multiple plin# '" Transport messaes when the 2 sends multiple

//1 messaes containin '" messaes in step ,,.

,3. pon reception of the response messaes in both step ,+ and step ,*- the Modify 0earer /eDuest messae of the

ttach procedure or 2 reDuested P8' connectivity procedure is combined with the 1reate 0earer /esponsemessae of the 8edicated 0earer ctivation Procedure. fter that- the "ervin G? continues with sendin a

1reate 0earer /esponse messae to the P8' G?.

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&''e/ GV"i#

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&''e/ 7 ('"r6ati5e)Ma%%i'g etee' te6%"rar; a'# area i#e'tities

The mappin between temporary and area identities is defined in T" *3.++3 JCK.

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&''e/ : (i'"r6ati5e)Gui#a'ce "r c"'triut"rs t" this s%eciicati"'

The followin uidance is provided for draftin fiures for this specification T" *3.;+, that contain specific stepswhich are different in T" *3.;+* J*K due to the PM&P=based "9A"> interfaceH

= Messae flows to this specification will contain the complete procedures applicable for GTP=based "9A"> only.

= &n this specification- clause(s) of a messae flow that is different for PM&P=based "9A"> interface are shownsurrounded by shaded bo indeed by an upper=case letter in ascendin order- e.. LL- L0L- L1L- etc.

7or eample- at the bottom of the flow- the followin tet should be includedH

L'OT2H Procedure steps () and (0) for an PM&P=based "9A"> interface are defined in T" *3.;+* J*K.L

= 7urther uidance for draftin procedures for T" *3.;+* J*K can be found in that specification itself.

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&''e/ (i'"r6ati5e)7igh Le5e$ :SR #escri%ti"'

.1 Ge'era$ #escri%ti"' " the :SR c"'ce%t

&dle state "inallin /eduction (&"/) aims at reducin the freDuency of T and / procedures caused by 2sreselectin between 2=T/' and G2/'AT/' which are operated toether. 2specially the update sinallin

between 2 and networ# is reduced. 0ut also networ# internal sinallin is reduced. To some etent the reduction ofnetwor# internal sinallin is also available when &"/ is not used or not activated by the networ#.

MT" described already /s containin G2/' and T/' cells- which also reduces update sinallin between 2and networ#. The combination of G2/' and T/' into the same /s implies however common scalin-

dimensionin and confiuration for G2/' and T/' (e.. same / coverae- same "G"' service area- no

G2/' or T/' only access control- same physical node for G2/' and T/'). s an advantae it does not

reDuire special networ# interface functionality for the purpose of update sinallin reduction.

&"/ enables sinallin reduction with separate "G"' and MM2 and also with independent Ts and /s. Thereby the

interdependency is drastically minimi!ed compared with the G2/'AT/' /s. This comes however with &"/specific node and interface functionality. "G"' and MM2 may be implemented toether- which reduces some interface

functions but results also in some dependencies.

&"/ support is mandatory for 2=T/' 2s that support G2/' andAor T/' and optional for the networ#. &"/

reDuires special functionality in both the 2 and the networ# (i.e. in the "G"'- MM2 and "ervin G?) to activate &"/for a 2. 7or this activation- the MM2A"G"' detects whether "=G? supports &"/ based on the confiuration and

activates &"/ only if the "=G? supports the &"/. The networ# can decide for &"/ activation individually for each 2.GnAGp "G"'s do not support &"/ functionality. 'o specific @"" functionality is reDuired to support &"/.

'OT2. /elease < @"" needs additional functionality to support the $dual reistration$ of MM2 and "G"'.

?ithout such an uprade- at least P" domain MT 5ocation "ervices and MT "hort Messaes are liable tofail.

&t is inherent functionality of the MM procedures to enable &"/ activation only when the 2 is able to reister via 2=

T/' and via G2/'AT/'. 7or eample- when there is no 2=T/' coverae there will be also no &"/activation. Once &"/ is activated it remains active until one of the criteria for deactivation in the 2 occurs- or until

"G"' or MM2 indicate durin an update procedure no more the activated &"/- i.e. the &"/ status of the 2 has to berefreshed with every update.

?hen &"/ is activated this means the 2 is reistered with both MM2 and "G"'. 0oth the "G"' and the MM2 have a

control connection with the "ervin G?. MM2 and "G"' are both reistered at @"". The 2 stores MM parameters

from "G"' (e.. P=TM"& and /) and from MM2 (e.. GT& and T(s)) and the 2 stores session manaement(bearer) contets that are common for 2=T/' and G2/'AT/' accesses. &n idle state the 2 can reselect

between 2=T/' and G2/'AT/' (within the reistered / and Ts) without any need to perform T or

/ procedures with the networ#. "G"' and MM2 store each other$s address when &"/ is activated.

?hen &"/ is activated and downlin# data arrive- the "ervin G? initiates pain processes on both "G"' and MM2.&n response to pain or for uplin# data transfer the 2 performs normal "ervice /eDuest procedures on the currently

camped=on /T without any precedin update sinallin (there are however eistin scenarios that may reDuire to perform a / procedure prior to the "ervice /eDuest even with &"/ is activated when G2/'AT/' /s are used

toether- as specified in clause :.,3.,.3 of T" *3.+:+ J<K).

The 2 and the networ# run independent periodic update timers for G2/'AT/' and for 2=T/'. ?hen theMM2 or "G"' do not receive periodic updates MM2 and "G"' may decide independently for implicit detach- which

removes session manaement (bearer) contets from the 1' node performin the implicit detach and it removes also

the related control connection from the "ervin G?. &mplicit detach by one 1' node (either "G"' or MM2)deactivates &"/ in the networ#. &t is deactivated in the 2 when the 2 cannot perform periodic updates in time. ?hen

&"/ is activated and a periodic updatin timer epires the 2 starts a 8eactivate &"/ timer. ?hen this timer epires andthe 2 was not able to perform the reDuired update procedure the 2 deactivates &"/.

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Part of the &"/ functionality is also available when &"/ is not activated because the MM contets are stored in 2-MM2 and "G"' also when &"/ is not active. This results in some reduced networ# sinallin- which is not available

for GnAGp "G"'s. These "G"'s cannot handle MM and session manaement contets separately. Therefore allcontets on GnAGp "G"'s are deleted when the 2 chanes to an MM2. The MM2 can #eep their MM2 contets in

all scenarios.

.2 Usage " the T:*

The 2 may have valid MM parameters both from MM2 and from "G"'. The LTemporary &dentity used in 'et

updateL (T&') is a parameter of the 2$s MM contet- which identifies the 2 identity to be indicated in the net /

/eDuest or T /eDuest messae. The T&' also identifies the status of &"/ activation in the 2.

The T&' can ta#e one of the three values- LP=TM"&L- LGT&L or L/T=related TM"&L. The 2 sets the T&' whenreceivin an ttach ccept- a T ccept or / ccept messae as specified in table ;.3.9.:=,.

L&"/ ctivatedL indicated by the /AT ccept messae but the 2 not settin the T&' to L/T=related TM"&L isa special situation. @ere the 2 has deactivated &"/ due to special situation handlin (see clause .:). 0y maintainin

the old T&' value the 2 remembers to use the /T TM"& indicated by the T&' when updatin with the 1' node of

the other /T.

Only if the T&' is set to L/T=related TM"&L &"/ behaviour is enabled for the 2- i.e. the 2 can chane between all

reistered areas and /Ts without any update sinallin and it listens for pain on the /T it is camped on. &f the

T&' is set to L/T=related TM"&L- the 2$s P=TM"& and /& as well as its GT& and T&(s) remain reistered with thenetwor# and valid in the 2.

?hen &"/ is not active the T&' is always set to the temporary &8 belonin to the currently used /T. This uaranteesthat always the most recent contet data are used- which means durin inter=/T chanes there is always contet

transfer from the 1' node servin the last used /T. The 2 identities- old GT& &2 and additional GT& &2-indicated in the net T /eDuest messae- and old P=TM"& &2 and additional P=TM"&A/& &2- indicated in the net

/ /eDuest messae depend on the settin of T&' and are specified in table ;.3.9.:=*.

The 2 indicates also information elements Ladditional GT&L or Ladditional P=TM"&L in the ttach /eDuest- T or/ /eDuest. These information elements permit the MM2A"G"' to find the already eistin 2 contets in the new

MM2 or "G"'- when the Lold GT&L or Lold P=TM"&L indicate values that are mapped from other identities.

.3 :SR acti5ati"'

The information flow in 7iure .3=, shows an eample of &"/ activation. 7or eplanatory purposes the fiure issimplified to show the MM parts only.

The process starts with an ordinary ttach procedure not reDuirin any special functionality for support of &"/. Thettach however deletes any eistin old &"/ state information stored in the 2. ?ith the ttach reDuest messae- the

2 sets its T&' to LGT&L. fter attach with MM2- the 2 may perform any interactions via 2=T/' withoutchanin the &"/ state. &"/ remains deactivated. One or more bearer contets are activated on MM2- "ervin G? and

P8' G?- which is not shown in the fiure.

The first time the 2 reselects G2/' or T/' it initiates a /outin rea pdate. This represents an occasion to

activate &"/. The T&' indicates LGT&L so the 2 indicates a P=TM"& mapped from a GT& in the / /eDuest. The"G"' ets contets from MM2. ?hen the MM2 sends the contet to the "G"'- the MM2 includes the &"/ supported

indication only if the involved "=G? supports the &"/. fter the &"/ activated- both 1' nodes #eep these contets because &"/ is bein activated. The "G"' establishes a control relation with the "ervin G?- which is active in

parallel to the control connection between MM2 and "ervin G? (not shown in fiure). The / ccept indicates&"/ activation to the 2. The 2 #eeps GT& and P=TM"& as reistered- which the 2 memorises by settin the T&'

to L/T=related TM"&L. The MM2 and the "G"' are reistered in parallel with the @"".

fter &"/ activation- the 2 may reselect between 2=T/' and T/'AG2/' without any need for updatin the

networ# as lon as the 2 does not move out of the /AT(s) reistered with the networ#.

The networ# is not reDuired to activate &"/ durin a / or T. The networ# may activate &"/ at any / or T

that involves the contet transfer between an "G"' and an MM2. The / procedure for this is shown in 7iure .3=,.

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&"/ activation for a 2- which is already attached to G2/'AT/'- with a T procedure from 2=T/' wor#sin a very similar way.

R&U %r"ce#ure ith :SR acti5ati"', UE has 5a$i# MMc"'te/ts "r SGS* a'# MME, SGS* a'# MME ha5e5a$i# MM registrati"' r"6 UE, SGS* a'# MME are

registere# ith 7SS

*"r6a$ &ttach %r"ce#ure, '"thi'g s%ecia$ "r :SResi#es #eacti5ati"' " a'; %"te'tia$ "$# :SR states

7SSSGS*MMEUE

1. &ttach ReDuest ("$# GUT: (rea$ GUT: "r 6a%%e# r"6 P-TMS:))

3. &ttach &cce%t (GUT:)

2. 7SS i'teracti"'s

!. +"'te/t ReDuest. +"'te/t Res%"'se (:SR ca%ai$it;)

. +"'te/t &cB (:SR acti5e#)

4. R&U ReDuest (P-TMS: (6a%%e# r"6 GUT: ecause T:* =GUT:>))

. R&U &cce%t (P-TMS:, :SR)

&ttach &cce%t 'e5er i'#icates:SR acti5ati"',s" UE sets T:* t" GUT:=

MME registere#

st"re SGS* : st"re MME :

<. 7SS i'teracti"'s

SGS* registere#

R&U &cce%t i'#icates :SR,s" UE sets T:* t" R&T-re$ate#TMS:=, :SR is acti5ate#

0i1ure H'3$%2 7SR Activation eFample

.4 "'$i'B #ata tra'ser

7iure .;=, shows a downlin# data transfer to an idle state 2 when &"/ is activated. The "ervin G? receivesdownlin# data. 0ecause of activated &"/- the "ervin G? has control connections with both MM2 and "G"' and

sends therefore downlin# data notifications to both nodes. MM2 and "G"' start their pain procedures- which results

in pain of the 2 in the reistered / and T(s) in parallel.

&n the eample illustrated in 7iure .;=, it is assumed that the 2 camps on 2=T/'. "o the 2 responds to painas usual with "ervice /eDuest. This triers the MM2 to setup the user plane connection between e'ode0 and "ervin

G?. The downlin# data are transferred to the 2.

?hen the 2 camps on T/'AG2/' it performs the pain response as specified for these access systems without

any reDuired update or other sinallin before. The downlin# data are then transferred via T/'AG2/' to the 2.

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)3&Release %&

8/13/2019 23401-c30


1. "'$i'B ata


MME S-GA P-GA

3a. Pagi'g

4. Pagi'g

UE R*+CS+

2. "'$i'B ata *"tiicati"'

e*"#eC SGS*

3. Pagi'g

!. Ser5ice ReDuest

. User P$a'e Setu%

4a. Pagi'g

. "'$i'B ata Tra'ser

0i1ure H'$%2 =o#nlink data transfer #ith 7SR active

.! :SR #eacti5ati"'

8eactivation of &"/ for the 2 does not reDuire any specific functionality. The status of &"/ activation is refreshed inevery / and T ccept messae. &f there is no eplicit indication of &"/ ctivated in these messaes then &"/ is

deactivated and the 2 sets its T&' to LGT&L or LP=TM"&L- as specified in Table ;.3.9.:=,. This causes always &"/deactivation when a 2 performs a / with a GnAGp "G"' of any standards release as these "G"'s never indicate

L&"/ ctivatedL to the 2.

. 7a'#$i'g " s%ecia$ situati"'s

"ituations may occur that cause unsynchroni!ed state information in the 2- MM2 and "G"'. "uch situations areH

= Modification of any 2P" bearer contet or P8P contet which was activated before the &"/ is activated in the2I

= t the time when the 2 moves from 2=T/' to G2/'AT/' or moves from G2/'AT/' to 2=T/'- if any 2P" bearer contet or P8P contet activated after the &"/ was activated in the 2 eistsI

= Missin periodic T or / updates- e.. because the coverae of a /T is lost or the /T is no more selected by the 2 (this may result also in implicit detach by "G"' or MM2)I

= 1' node chane resultin in contet transfer between the same type of 1' nodes ("G"' to "G"' or MM2 toMM2)I

= "ervin G? chane (both with and without 2 mobility)I

= 1hane of the 2 specific 8/F parametersI

= 1hane of the 2 1ore 'etwor# 1apabilitiesI

= 2=T/' selection by a T/'=connected 2 (e.. when in /P1@ to release &u on T/' side)I

2=T/' selection from G2/' /28 stateI

= G2/' selection by an 2=T/'=connected 2 via 1ell 1hane Order that is not for 1" fallbac#.

There are no &"/ specific procedures to handle such situations to avoid additional compleity and error cases. llspecial situations that cause contet in the 2- MM2 and "G"' to become asynchronous are handled by &"/

deactivation. The normal /AT procedures synchroni!e contets in MM2 and "G"' and activate &"/ aain whenwanted by the networ#.

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)33Release %&

8/13/2019 23401-c30


"ome specific handlin is defined to enable combined MM2A"G"'. 7or this the 2 sinals at T/' //1 levelalways an &ntra 8omain '" 'ode "elector (&8''") derived from the &8 sinalled as P=TM"& (also when mapped

from GT&). t 2=T/' //1 level the 2 indicates the GMM2& derived from the GT& that is sinalled in theT /eDuest messae (also when derived from P=TM"&). This handlin is performed by the 2 independent from the

networ# confiuration. &t is not visible to the 2 whether MM2 and "G"' are combined.

Given the &P=based architecture of 2P" and the &P=based applications such establishment and deactivation of the 2P" bearer or P8P contet can happen freDuently before the 2 chanes the /T e.. a 2 as#in for delivery of an "M"(over &P) or startin a Bo&P over &M"- an entirely new 2P" bearer or P8P contet may be established for that purpose.

Then- after the applicationAservice is finished- the newly established 2P" bearer or P8P contet ets deactivated. &nsuch particular situation the deactivation of the &"/ at the 2 and hence performin a / or T update when the

2 chanes the /T is not needed. Preventin the 2 from deactivatin the &"/ in this case ensures an efficient usae

of the 2$s battery power and reduces the unnecessary sinallin load that is seen as the #ey objective to be achieved by

introducin the &"/ feature. Thus- 2 only locally deactivates &"/ when bearer eisted at the time of &"/ is activated-or when 2 chanes /T with bearers which are created after &"/ is activated.

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)3Release %&

8/13/2019 23401-c30


&''e/ (i'"r6ati5e)+ha'ge hist"r;

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)3+Release %&

8/13/2019 23401-c30


9han1e history=ate TSG I TSG =oc' 9R Rev 9at Su4ject9omment ld "e#

2011-12 SP-!4 SP-11034 210 2 Re$ati"'shi% etee' L:P& %er6issi"'s a'# S:PT8 %er6issi"'s 10.!.0 10..0

2011-12 SP-!4 SP-1103 21 1 Thr"tt$i'g " "'$i'B ata *"tiicati"' ReDuest he' :SR isacti5ate#

10.!.0 10..0

2011-12 SP-!4 SP-11032 21<1 1 & Restricti"' "' i'ter-PLM* ha'#"5er t" a +SG ce$$ 10.!.0 10..0

2011-12 SP-!4 SP-1103 210 1 UE i'itiates #etach %r"ce#ure he' MM acB" ti6er is ru''i'g 10.!.0 10..0

2011-12 SP-!4 SP-1103 211 1 &P* ase# Sessi"' Ma'age6e't c"'gesti"' c"'tr"$ c$ariicati"' 10.!.0 10..02011-12 SP-!4 SP-1102 21 3 & "S 6a%%i'g 10.!.0 10..0

2011-12 SP-!4 SP-1103 220! 2 CacB-" ti6er ha'#$i'g i' c"''ecte# 6"#e 6"i$it; 10.!.0 10..0

2011-12 SP-!4 SP-1103 2212 1 E6erge'c; attach he' MM acB-" ti6er is ru''i'g 10.!.0 10..0

2011-12 SP-!4 SP-11032 224 2 & 7a'#"5er t" +SG ce$$ ith e6erge'c; earer 10.!.0 10..0

2011-12 SP-!4 SP-1104 2142 2 C :'tr"#uci'g +SS "r VPLM* aut"'"6"us +SG r"a6i'g 10..0 %%''

2011-12 SP-!4 SP-1104 2143 2 C +SS i'"r6ati"' st"rage 10..0 11.0.0

2011-12 SP-!4 SP-1104 214 2 C Retrie5i'g +SG suscri%ti"' i'"rr6ati"' r"6 +SS 10..0 11.0.0

2011-12 SP-!4 SP-1104 21!0 2 C :'sert +SG suscrier #ata 10..0 11.0.0

2011-12 SP-!4 SP-1104< 21<2 2 + :'ter-PLM* ha'#"5er t" a +SG ce$$ ase# "' the ass"ciate# +SGhite $ists

10..0 11.0.0

2011-12 SP-!4 SP-11040 2232 2 C ReDuiri'g #;'a6ic P++ 10..0 11.0.0

2012-03 SP-!! SP-12001 2140 2 +"rrect the 9MS9 t" the 9UE9 hich accesses 5ia E-UTR&* 11.0.0 11.1.0

2012-03 SP-!! SP-12001 211 1 Re6"5e the re#u'#a't :E 11.0.0 11.1.0

2012-03 SP-!! SP-1200< 21! 3 C SM-CacB" ti6er "r *A i'itiate# earer #eacti5ati"' 11.0.0 11.1.0

2012-03 SP-!! SP-12001 21<< 2 +"rrecti"' i' P* GA i'itiate# earer #eacti5ati"' 11.0.0 11.1.02012-03 SP-!! SP-12001 221! 2 MME eha5i"ur i' case " S+TP c"''ecti"' $"ss 11.0.0 11.1.0

2012-03 SP-!! SP-12001 22!1 1 +"rrecti"'s t" %r"ce#ure ha'#$i'g " Ser5ice ReDuest a'# S1-ase# ha'#"5er

11.0.0 11.1.0

2012-03 SP-!! SP-1200< 22!2 - E#it"ria$ c"rrecti"'s t" 23.401 11.0.0 11.1.0

2012-03 SP-!! SP-1200< 22!3 - :ET reere'ce u%#ate "r 23.401 11.0.0 11.1.0

2012-03 SP-!! SP-12001 220 1 &## ar'i'g *8TE he' usi'g P&P "r e/ter'a$ authe'ticati"' 11.0.0 11.1.0

2012-03 SP-!! SP-12003 223 - & +"rrecti"' " the P* GA se$ecti"' "r the &P* ith S:PT8%er6issi"'

11.0.0 11.1.0

2012-03 SP-!! SP-12004 22 1 & Aar'i'g S;ste6 #etai$s 6"5e t" 23.041 11.0.0 11.1.0

2012-03 SP-!! SP-1200< 220 1 Carri'g su-categ"ries 11.0.0 11.1.0

2012-03 SP-!! SP-12001 22 1 +"rrect the 6istaBe' :E i' the create sessi"' reDuest "r EM+ 11.0.0 11.1.0

2012-03 SP-!! SP-1200 22 1 & +$ari; reere'ce %"i't use# i'ter-PLM* a'# i'tra-PLM* 11.0.0 11.1.0

2012-03 SP-!! SP-12001 22<! 3 PacBet i$ter i'c$u#e# i' the Cearer Res"urce M"#iicati"'%r"ce#ure

11.0.0 11.1.0

2012-03 SP-!! SP-12004 22< 2 & Ser5ice user c"rrecti"' "r MT+ c"'gesti"' c"'tr"$ 11.0.0 11.1.02012-03 SP-!! SP-12001 22<< 1 T&U trigger u%"' recei%t " %agi'g i' c"'gesti"' 11.0.0 11.1.0

2012-03 SP-!! SP-12001 220 - +"rrecti"' " +S Ser5ice C$"cB ; 7SS t" MME sig'a$$i'g 11.0.0 11.1.0

2012-03 SP-!! SP-1200 222 1 & Per6it RR+ Re$ease i' %ara$$e$ ith S1 Re$ease 11.0.0 11.1.0

2012-03 SP-!! SP-12001 22! 1 C+M ha'#$i'g i' EP+ 11.0.0 11.1.0

2012-03 SP-!! SP-1200<0 230! 1 + :'c$u#e su%%"rt " "ther 6e#ia "r :MS E6erge'c; Sessi"' 11.0.0 11.1.0

2012-03 SP-!! SP-1200< 230 1 C ec$ari'g su%%"rt "r e/te'#e# TT i$ter "r6at 11.0.0 11.1.0

2012-03 SP-!! SP-1200<1 2312 2 C *et"rB Pr"5i#e# L"cati"' :'"r6ati"' Retrie5a$ 5ia CearerRe$ate# Pr"ce#ure

11.0.0 11.1.0

2012-03 SP-!! SP-1200< 2313 2 C E&C "r E-UTR&* 11.0.0 11.1.0

2012-03 SP-!! SP-12003 231 - & L:P& P* c"''ecti"' ha'#$i'g he' the UE9s +SG 6e6ershi%cha'ges

11.0.0 11.1.0

2012-03 SP-!! SP-12001 232 2 C Pri"rit; treat6e't "r *et"rB Ma'age6e't u'cti"'s 11.0.0 11.1.0

2012-03 SP-!! SP-12001 232 1 C L"a# re-a$a'ci'g etee' MMEs "r Pri"rit; Ser5ices 11.0.0 11.1.0

2012-03 SP-!! SP-12001 2333 4 UE &S ca%ai$it; reDuest "5er S1 11.0.0 11.1.0

2012-0 SP-! SP-12023 22< 3 & i/ r"'g state6e't "r the Re%"rti'g &cti"' re$ate# st"rage 11.1.0 11.2.02012-0 SP-! SP-1202!1 234 2 +"rrecti"' " the r"'g #escri%ti"' a"ut e6erge'c; &RP 5a$ue 11.1.0 11.2.0

2012-0 SP-! SP-120243 23!1 1 +"rrecti"' " L"cati"' :'" 11.1.0 11.2.0

2012-0 SP-! SP-120243 23! 3 +"rrecti"' " *et"rB Pr"5i#e# L"cati"' :'"r6ati"' Retrie5a$Pr"ce#ure ith"ut earer "S u%#ate

11.1.0 11.2.0

2012-0 SP-! SP-1202!1 23!< 2 L"ca$ EPS earer c"'te/t #eacti5ati"' at ha'#"5er 11.1.0 11.2.0

2012-0 SP-! SP-120243 23 - Re6"5a$ " +SG : as a 'et"rB %r"5i#e# $"cati"' i'"r6ati"'%ara6eter

11.1.0 11.2.0

2012-0 SP-! SP-1202!1 23 1 Gui#a'ce "' UE Ra#i" +a%ai$it; Match Pr"ce#ure 11.1.0 11.2.0

2012-0 SP-! SP-12023 23 3 & +$ar iicati"' "r E-UTR&* TracBi'g &rea U%#ate ith"ut S-GA a'#MME +ha'ge

11.1.0 11.2.0

2012-0 SP-! SP-12023! 23< 1 & Missi'g Pagi'g Pri"rit; "r Cearer acti5ati"'6"#iicati"' 11.1.0 11.2.0

2012-0 SP-! SP-120233 23< 1 & Re-attach "r e6erge'c; earer ser5ice 11.1.0 11.2.0

2012-0 SP-! SP-12023 2421 2 E&C i'#icati"' r"6 MME 11.1.0 11.2.0

2012-0 SP-! SP-1202!1 2422 3 +$ariicati"' "' ha'#$i'g " 7"6"ge'"us Su%%"rt " :MS 85er PS

Sessi"'s

11.1.0 11.2.0

2012-0 SP-! SP-12023 242! - & :SR #eacti5ati"' "r PGA-i'itiate# Cearer eacti5ati"' Pr"ce#ure 11.1.0 11.2.0

2012-0 SP-! SP-1204< 240! 2 +$ariicati"'s t" the #eerre# a'# static :P a##ress a$$"cati"'s 11.2.0 11.3.0

2012-0 SP-! SP-1204<! 2433 ! &%%r"%riate +ause 5a$ue r"6 a$$ the e$ete Sessi"' ReDuest 11.2.0 11.3.0

2012-0 SP-! SP-1204<! 243! 1 :SR #eacti5ati"' i' +e$$ +ha'ge 8r#er (++8) t" GER&* 11.2.0 11.3.0

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)3,Release %&

8/13/2019 23401-c30


9han1e history=ate TSG I TSG =oc' 9R Rev 9at Su4ject9omment ld "e#

2012-0 SP-! SP-1204< 243 1 :SR #eacti5ati"' i' GER&* Rea#; t" E-UTR&* i'ters;ste6cha'ge

11.2.0 11.3.0

2012-0 SP-! SP-1204<! 243 1 +$ariicati"' " 7"6"ge'"us Su%%"rt " :MS 85er PS Sessi"'s i'R&U

11.2.0 11.3.0

2012-0 SP-! SP-1204< 243< 2 *e c$ause "r 7"6"ge'"us Su%%"rt " :MS 85er PS Sessi"'s 11.2.0 11.3.0

2012-0 SP-! SP-1204< 2444 1 St"rage " EPLM* $ist i' 7SS 11.2.0 11.3.02012-0 SP-! SP-1204<! 24!0 - + Re6"5i'g *M8-::: 11.2.0 11.3.0

2012-0 SP-! SP-1204< 24!4 - Re6"5i'g '"te "' +SG : c""r#i'ati"' i' Re$-11 11.2.0 11.3.0

2012-0 SP-! SP-1204< 24! 1 +"'si#erati"' "r #eci#i'g c"rrect 5"ice su%%"rt 6atch i'#icat"r 11.2.0 11.3.0

2012-12 SP-!< SP-1201! 244 2 & +"rrecti"' " %acBet i$ters i' TT 11.3.0 11.4.0

2012-12 SP-!< SP-1201 244< 4 C UE su%%"rti'g #ua$ %ri"rit; 11.3.0 11.4.0

2012-12 SP-!< SP-12013 24 1 & +$ariicati"' "' SU Err"r Rati" 5a$ue he' 6a%%i'g EPS +:4t" Re$ease "S %ara6eters

11.3.0 11.4.0

2012-12 SP-!< SP-12010 240 3 & Restricti"' " :'ter R&T ha'#"5erre$ease ith re#irecti"' etee'E-UTR&* a'# UTR&*GER&*

11.3.0 11.4.0

2012-12 SP-!< SP-1202 24< 3 *"ti;i'g UE "' s%eciic P* #isc"''ecti"' hi$e the UE is i' thei#$e state

11.3.0 11.4.0

2012-12 SP-!< SP-1201 24 - Re6"5a$ " %rec"'#iti"' " UL: i' P* #isc"''ecti"' %r"ce#ure 11.3.0 11.4.0

2012-12 SP-!< SP-1201 24<0 2 +"rrecti"' " 'et"rB st"re# acB-" ater a##iti"' " ua$ %ri"rit; 11.3.0 11.4.0

2012-12 SP-!< SP-1202 24<4 3 UE ca%ai$ities i' the UE Ra#i" +a%ai$it; Match ReDuest%r"ce#ure

11.3.0 11.4.0

2012-12 SP-!< SP-12013 24< 1 & Regu$ar #eter6i'istic :ME: etch 11.3.0 11.4.0

2012-12 SP-!< SP-1202 24<< - Re6"5e the R&*3 reere'ce "r E&C 11.3.0 11.4.0

2013-03 SP-! SP-1300<3 240 ! User L"cati"' :'"r6ati"' &ge 11.4.0 11.!.0

2013-03 SP-! SP-1300<1 24< 2 & e$a;e# re%"rti'g " Ser5i'g *et"rB, a'# UE Ti6e W"'e 11.4.0 11.!.0

2013-03 SP-! SP-1300<< 2!01 2 Me6ershi% 5eriicati"' #uri'g Path Sitch ReDuest %r"ce#ure 11.4.0 11.!.0

2013-03 SP-! SP-1300< 2!0 2 C E/te'si"' " S:PT8 %er6issi"' "r S:PT8 at the $"ca$ 'et"rB 11.!.0 %&''

2013-03 SP-! SP-1300< 2!0< 1 C Su%%"rt " S:PT8 at the L"ca$ *et"rB 11.!.0 12.0.0

2013-03 SP-! SP-13003 2!0 3 C +$ari;i'g i'ter-"%erat"r chargi'g reDuire6e'ts 11.!.0 12.0.0

2013-0 SP-0 SP-13022! 2!1< 1 & +$ariicati"' that :MSV"PS is MMTEL 12.0.0 12.1.0

2013-0 SP-0 SP-13022! 2!20 2 & :66e#iate +a'ce$ L"cati"' &+ #uri'g 7SS-i'itiate# #etach%r"ce#ure

12.0.0 12.1.0

2013-0 SP-0 SP-130324 2!21 3 C :SR ha'#$i'g i' S:PT8 at $"ca$ 'et"rB 12.0.0 12.1.0

2013-0 SP-0 SP-130324 2!3< 3 + irect user %$a'e %ath esta$ish6e't "r S:PT8 at $"ca$ 'et"rB "'e*"#eC

12.0.0 12.1.0

2013-0 SP-0 SP-13030! 2!40 1 & +$ariicati"' "' "%erati"'s re$ate# t" #ua$ %ri"rit; 12.0.0 12.1.02013-0 SP-0 SP-130232 2!41 ! +"rrect i'c"'siste'c; ith Stage 1 regar#i'g su%%"rt "re6erge'c; earer ser5ices i' the ser5i'g 'et"rB

12.0.0 12.1.0

2013-0 SP-0 SP-130310 2!4 ! +"rrecti"' t" P* eacti5ati"' "r S:PT8HL* 12.0.0 12.1.0

2013-0 SP-0 SP-130232 2!! 2 C :'#i5i#ua$ suscri%ti"' 6igrati"' a'# suscrier tr"u$esh""ti'g 12.0.0 12.1.0

2013-0 SP-0 SP-130232 2!! 1 C &##iti"' " E'# MarBer Su%%"rt "r 7a'#"5er Sce'ari"s ith SGARe$"cati"'

12.0.0 12.1.0

2013-0 SP-0 SP-130310 2!1 - +"rrecti"' "' the a%%$icai$it; " S:PT8HL* at a +SG ce$$ 12.0.0 12.1.0

2013-0 SP-0 SP-130232 2!2 3 + Use " L" &ccess Pri"rit; :'#icati"' t" se$ect MME 12.0.0 12.1.0

2013-0 SP-0 SP-130232 2! 3 Use " MM acB" ti6er "r 5"ice ce'tric #e5ices 12.0.0 12.1.0

2013-0 SP-1 SP-1303! 2!2< 2 & :'ter"%erati"' etee' MME a'# G'G% SGS* 12.1.0 12.2.0

2013-0 SP-1 SP-1303<4 2! 2 C :'tr"#ucti"' " GTP-c L"a# +"'tr"$ 12.1.0 12.2.0

2013-0 SP-1 SP-13034 2! 2 & +$ariicati"'s "' "S a'# r"a6i'g 12.1.0 12.2.0

2013-0 SP-1 SP-1303<4 2!1 2 C GTP-+ "5er$"a# ha'#$i'g 12.1.0 12.2.0

2013-0 SP-1 SP-1303 2!4 2 +"rrecti"' " S:PT8 at L"ca$ *et"rB 12.1.0 12.2.0

2013-0 SP-1 SP-1303! 2! 1 & i/ eDui5a$e't PLM* $ist ha'#$i'g 12.1.0 12.2.02013-0 SP-1 SP-1303<! 2!< 2 + &##iti"' " a '"te i' ge'era$ #escri%ti"' " i'ter-R&T 78 12.1.0 12.2.0

2013-0 SP-1 SP-13032 2!<2 2 & Re%"rti'g UL: a'# Ti6eW"'e at *et"rB-i'i tia te# earer re$easere$ate# %r"ce#ures

12.1.0 12.2.0

2013-0 SP-1 SP-1303< 2!<4 2 & &5"i#i'g P* GA re$"cati"' he' ra#i" a'# S1 earers are acti5e 12.1.0 12.2.0

2013-0 SP-1 SP-1303 2!<! 1 +"rrecti"' " L"ca$ 7"6e *et"rB 12.1.0 12.2.0

2013-0 SP-1 SP-1303 2!< 1 +$ariicati"' "' #eacti5ati'g S:PT8HL* u%"' i#$e 6"#e 6"i$it; 12.1.0 12.2.0

2013-12 SP-2 SP-130!24 2!!4 4 & L traic 6a%%i'g a$ig'6e't ith 23.00 12.2.0 12.3.0

2013-12 SP-2 SP-130!24 2!0 1 & +$ariicati"' "' the ha'#$i'g '"'-MM 6essage #uri'g ha'#"5er 12.2.0 12.3.0

2013-12 SP-2 SP-1302 2!4 12 C +"re *et"rB assiste# e*"#eC %ara6eters tu'i'g 12.2.0 12.3.0

2013-12 SP-2 SP-130!24 2! 2 & 7a'#$i'g " u%$ i'B %acBet i$ ters a'# #ei'i ti"' "r a 5a$i# state " theTT setti'g

12.2.0 12.3.0

2013-12 SP-2 SP-130 2!< C PGA a'# SGA +hargi'g a$ig'6e't i' #"'$i'B 12.2.0 12.3.0

2013-12 SP-2 SP-130!2 200 1 +"rrecti"' "' the c"'#iti"'s "r i'c$u#i'g the L"ca$ 7"6e *et"rB:

12.2.0 12.3.0

2013-12 SP-2 SP-130!2 202 1 +$ariicati"' "r 8%ti6iFati"' " L:P& a'# S:PT8HL* %agi'g 12.2.0 12.3.02013-12 SP-2 SP-130!2 203 C :'tr"#uci'g UE P"er Sa5i'g M"#e 12.2.0 12.3.0

2013-12 SP-2 SP-130!40 20! 2 &##iti"' " a '"te a##ressi'g the eha5i"r " 'et"rB si#e #uri'gi'ter-R&T 3GPP PS 7a'#"5er

12.2.0 12.3.0

2013-12 SP-2 SP-130!2 20 1 eacti5ate :SR "r S:PT8HL* 12.2.0 12.3.0

3GPP

3GPP TS &3'% *%&'3' (&%3$%&)3-Release %&

8/13/2019 23401-c30


Date post:	04-Jun-2018
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