Ura-pch Deployment Rcna

URA_PCH deployment

Shu tian liu

Rcna, network consulting

ERICSSON

URA-PCH Deployment | Ericsson Confidential | Shutian Liu | 2010-06-24 | Page 2 (21)

Outline

Feature Activation Parameters Configuration Fast Dormancy Consideration UE Auditing

The presentation provides the detail aspect of the deployment for UTRAN Registration Area (URA).

A general description of UE Auditing is also given.


Topic

Feature Activation PS Interactive URA-PCH Speech and 0 kbps Packet Data Golden Rules

Parameters Configuration Fast Dormancy Consideration UE Auditing


Feature ActivationPS Interactive ura-pch

The feature state at the moment should be Activated

Activate the RabCombination021=================================================================================

67 SystemFunctions=1,Licensing=1,RncFeature=RabCombination021

=================================================================================

RncFeatureId RabCombination021

featureState 0 (DEACTIVATED)

isLicenseControlled 1 (TRUE)

keyId CXC4030521

licenseState 1 (ENABLED)

serviceState 0 (INOPERABLE)

==================================================================================

==================================================================================

MO Attribute Value

==================================================================================

UeRc=21 userLabel (URA/URA)

==================================================================================

FAJ Number Feature Name Rate (for RABcombinations))

Feature Designation Key Id

FAJ 121 407 PS Interactive URA-PCH PS Interactive URA-PCH

RabCombination021 CXC4030521

WRAN features with License Keys in RNC


Feature ActivationSpeech and 0 kbps packet data

The feature at the moment would improve network performance

Activate the RabCombination009===========================================================================

76 SystemFunctions=1,Licensing=1,RncFeature=RabCombination009

===========================================================================

RncFeatureId RabCombination009

featureState 0 (DEACTIVATED)

isLicenseControlled 1 (TRUE)

keyId CXC4030509

licenseState 1 (ENABLED)

serviceState 0 (INOPERABLE)

============================================================================

==================================================================================

MO Attribute Value

==================================================================================

UeRc=9 userLabel (0/0)

==================================================================================

FAJ Number Feature Name Rate (for RABcombinations))

Feature Designation Key Id

FAJ 121 754 Speech and 0 kbpsPacket Data

Conv. CS Speech +PS Interactive 0/0

RabCombination009 CXC4030509

WRAN features with License Keys in RNC


Feature Activationgolden rules

Cells must be manually locked and unlocked otherwise the change will not take completely effect.

The drawback would be that the UEs keep performing URA update continuously because the URA Update message doesn't reach the RNC and so the UE keeps performing updates.

Prepare a script to perform the activation and the change of parameter by cluster

if the change of parameter is implemented in the whole RNC, all the UEs in the RNC make an URA update and generate a huge peak of signaling load.


Topic



Parameters Configuration (1)

Parameters related to following MO need to be configured MO Ura MO UtranCell MO ChannelSwitching MO Paging

Parameter Name Description Range E/// RecommendeduraIdentity Used to identify a certain URA.

Change takes effect: The new value will be usedby the UtranCells that refer to this Ura instanceafter those cells have been manually locked andthen unlocked. If any of those cells are disabled,the new value will be used in those cells as soonas they become enabled.Dependencies: UtranCell::administrativeStateand UtranCell::operationalStateSpecification: 3GPP 25.331

0..65535

userLabel Provides the possibility to put a user-friendlylabel on the MO instance. The value is not usedby the RNC.

0..128

Parameter Name Description Range E/// RecommendeduraRef Reference to the URA MO. There can be 0 or a

maximum of 4 URAs per cell.

MO - Ura

MO - UtranCell

The activation require a lock-unlock of the cells



Setting more than one URA per UtranCell (URA overlapping)



Param eter Nam e Descrip tio n Rang e E /// Recom m en dedhsd sch In activityT im er T im e, n ot inc lud ing da ta transm is sio n, after

w hic h a co nnection c onfigured on H S-D SC H issw it ched d own to st ate C ELL_ FA CH . IfC ELL_F AC H s tate is not avai lable, theconn ection is s wi tche d dow n to ID LE stat e.

Spec ial values:T he value 7200 s is us ed only fo r t estingpurposes .

U nit: s

1..255 72 00..7200 2

inac tivityT im er T im e, n ot inc lud ing da ta transm is sio n, afterw hic h a co nnection in sta te C ELL_F AC H issw it ched d own to st ate U R A_P CH . IfU R A_PC H s tate is not avai lable, the U E issw it ched d own to ID LE state.

U nit: s

1..1440 60

inac tivityT im erPch C ontrols how long a U E c an be in U R A_P CHstat e. W hen the tim er ex pires , the U e trans itionsto Idle M ode.

U nit: m inute

0..240 30

Param eter Nam e Descrip tio n Rang e E /// Recom m en dedutran D rxC ycleL en g th T he D R X c yc le length c oeff icient (k ) f or UE s in

U R A_PC H .T he D R X c yc le length is th e frequenc y w i thw hic h the U e l is tens on the pag ing channe l. T heparam eter is appl ic able for both U T R AN and CNini tia ted pagin g in UR A _PC H .

Value m apping:T he cy cle leng th is c alc ulated as th e k' th pow erof 2, whe re k = 3..9. For ex am ple , 6correspo nds t o cy cle leng th 640 m s, 7correspo nds t o cy cle leng th 1280 m s, et c.

3..9 5

M O - Ch an nelSw itchin g

M O - P aging

FACH->URA_PCH/IDLE

URA_PCH *

CELL_FACH

CS and PSCombination PS Only

IDLE

RAB establishment

RAB release

Channel Switching

Iu Release

HS->FACH

URA_PCH->IDLE



URA Update procedure

A UE in state URA_PCH enters a new cell not belonging to the same URA that the UE is registered in.

The UE enters a cell that has no URAs defined. This will trigger a release of the RRC Connection and the UE enters Idle mode.

As part of a supervision mechanism, URA Update is performed periodically. The periodicity is controlled by the timer t305.


Topic



Fast Dormancy consideration (1)

The graph illustrates battery life improvement due to Fast Dormancy behaviour.

General information of the test It compares two devices on a

commercial UMTS network with a complete data exchange for a short ACK-based application receiving a regular message once every 17 minutes.

This network did not support URA_PCH

A proposal for the introduction of a Fast Dormancy feature has been presented to a 3GPP Rel7 meeting (Nov07); but could be implemented in this way in any release.

Time (hour)

B

a

t

t

e

r

y

L

i

f

e

(

%

)



Normal UEBehaviour

G1 Fast Dormancy

Fast Dormancy makes difficult to tune hsdschInactivityTimer and inactivityTimer


Some UEs are disconnecting the PS call after a period of inactivity in connected mode (e.g. 3 sec)

This is beneficial to reduce power battery consumption However, this mechanism overwrite the channel switching due to inactivity

(HS->FACH, FACH->Idle inactivity timers) controlled by the RAN and itmakes ineffective to tune these parameters

Questions: 1) What is the contribution of differernt UE type to the total number of

PS call per hour? 2) Which UE types are possibly using Fast Dormancy as main

mechanism to release the call?


UE Auditing of the network is needed.


Topic


Objectives and Method Number of PS Calls per Hour RRC Release Requested by UE


Objectives: Characterize the impact of the new terminals (e.g. Apple I-Phone, HTC Google phones,

Blackberry etc) on the PS network performance and analyze which terminals show a Fast Dormancy behavior.

Measurement period and traces: Activate GPEH traces in BH Below traces are needded for auditing

UE auditingobjectives and method

RRC_RRC_CONNECTION_RELEASERRC_SIGNALLING_CONNECTION_RELEASE_INDICATIONRRC_RRC_CONNECTION_REQUEST RRC_UPLINK_DIRECT_TRANSFER RRC_DOWNLINK_DIRECT_TRANSFER RRC_INITIAL_DIRECT_TRANSFER

RANAP_IU_RELEASE_COMMAND RANAP_COMMON_ID INTERNAL_CHANNEL_SWITCHING INTERNAL_SYSTEM_RELEASE INTERNAL_RAB_ESTABLISHMENTINTERNAL_IMSI


Total number of PS RAB establishments per hour

107113663

1533988

824502

329299259221206184164161152122119116938987828279726966

0 2000 4000 6000 8000 10000 12000

Apple-iPhone 3G, A1241Apple-iPhone 3G S,

RIM-9000HTC -BLAC100HTC -DREA200

HTC -NIKI100HTC -ROSE100

Samsung-SGH-I780ONDA-MT503HS

HTC -DIAM100RIM-9500

HTC -KAIS130Nokia -N97-1

HTC -POLA100HTC -WING220

Huawei-HUAWEI E220HTC -RAPH100

Huawei-E169Huawei-E1692

Sony Ericsson-X1iHTC -CLIO110

HTC -SAPP100ONDA-M503HAHTC -DREA110Nokia -N95 8GBHTC -DREA100

Samsung-SGH-i900

iPhone and BlackBerry(RIM) are responsible forthe 75% of the PS callsvolume

Several HTC models arepresent and account for18% of the RAB volume

The rest of the volume isoffered by Nokia, Huawei, ONDA, Samsung, SonyEricssonmodels

UE auditingnumber of ps calls per hour


RRC releases requested byUE using the messageSIGNALLING CONNECTION RELEASE INDICATION over the total releases

iPhone, HTC, Blackberry (RIM) and SonyEricsson terminalsuse this message in almost allthe RRC releases

Some models of Nokia (N95) are using it but others less (e.gN97)

Samsung and cards are notusing it

Note that not all these RRC releases may be due to Fast Dormancy

% of calls released by UE

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Apple-iPhone 3G, A1241Apple-iPhone 3G S,

RIM-9000HTC -BLAC100HTC -DREA200

HTC -NIKI100HTC -ROSE100

Samsung-SGH-I780ONDA-MT503HS

HTC -DIAM100RIM-9500

HTC -KAIS130Nokia -N97-1

HTC -POLA100HTC -WING220

Huawei-HUAWEI E220HTC -RAPH100

Huawei-E169Huawei-E1692

Sony Ericsson-X1iHTC -CLIO110

HTC -SAPP100ONDA-M503A

HTC -DREA110Nokia -N95 8GBHTC -DREA100

Samsung-SGH-i900

UE auditingRRC release requested by UE


Summary and Questions


The presentation provides the detail aspect of the deployment for UTRAN Registration Area (URA).

A general description of UE Auditing is also given.

OutlineTopicFeature ActivationPS Interactive ura-pchFeature ActivationSpeech and 0 kbps packet dataFeature Activationgolden rulesTopicParameters Configuration (1)Parameters Configuration (2)Parameters Configuration (3)Parameters Configuration (4)TopicFast Dormancy consideration (1)Fast Dormancy consideration (2)Fast Dormancy consideration (3)TopicUE auditingobjectives and methodUE auditingnumber of ps calls per hourUE auditingRRC release requested by UESummary and Questions

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