UMTS Multi Carrier Strategy and Configuration 20100622

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Security Level: Internal 23/4/22

UMTS Multi-Carrier Strategy and Configuration

Hu Mingchao

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 2

Two-carrier strategy introduce

Strategy 1

Strategy 2 (Recommend)

Strategy 3

Strategy 4


Two-carrier strategy introduceStrategy 1F1 only supports R99;F2 cell is barred and UE camp on F1.

Strategy 2 (Recommend)Camp on F1 or F2 randomly,Load balance

R99

R99+HSPA

F1

F2

R99

R99+HSPA

R99

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

F1

F2

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

F1

F2

R99+HSPA R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

Strategy 3Camp on F1,Service steering.

R99+HSPA

R99+HSPA

F1

F2

R99+HSPA R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

Strategy 4Camp on F1, Load balance.



Strategy 1


Strategy 3

Strategy 4


UE with Idle Mode Strategy

UE with Connected Mode Strategy

Parameters configuration

Strategy 1


Idle Mode Selection/Reselection strategy1

R99+HSDPA R99

HSDPA+R99(Barred)

R99+ HSDPA

F1

F2

Strategy 1: F2 cell is barred to force UE to camp on F1 in idle mode.

After service released in F2 cell, UE come back to F1 cell.

when UE hang up in F2 cell, maybe UE will display “no service ” for a short time because F2 is barred.

Reselect F1 after finish a call on F2





Strategy 1


Connected mode mobility strategy (1/2)

• F1 R99 calls are soft handover between intra-freq cells.

• F2 HSDPA Cell change between intra-freq cells if there exists continuous F2 coverage.

• In hotspots, HSDPA calls are DRD from F1 to F2.

R99 R99

R99+HSDPA

R99 R99

R99+HSDPA

R99+HSDPA R99

HSDPA+R99

R99+HSDPA R99

HSDPA+R99

Initiates HSDPA Service on F1

Setup HSDPA service on F2

F1

F2

DRD to F2 based on service

HSDPA users DRD from F1 to F2


Connected mode mobility strategy (2/2)

HSDPA inter-freq HHO from F2 to F1 – leaving a hotspot

R99

HSDPA+R99

R99 R99+ HSDPA

HSDPA+R99

R99

HSDPA+r99

R99

HSDPA+R99

DRD to F2 to HSDPA

Intra-freq HO to DCH

R99+ HSDPA

User with HSDPA service

R99+ HSDPAR99+ HSDPA

HSDPA DRD from F1 to F2 – entering a hotspot

R99 R99+ HSDPA

HSDPA+R99

HSDPA service inter-freq HHO to F1.

User with HSDPA service in F2


Combined Service for Connected UE Strategy ◆ For Combined Service:

→Scenario AStep1:CS is established on F1;Step2:Established R99 PS service on F1 for HSDPA service request ;Step3:CS service is released;Step4:trigger DRD from F1 to F2, HSDPA service remain in F2;

→Scenario B:Step1:HSDPA terminals camp on F1;Step2:HSDPA service DRD from F1 to F2 and established on F2 finally;Step3:Combined HSDPA+CS will be remained on F2;Step4:If CS service released, HSDPA service remain in F2 OR If HSDPA service released, CS service remain in F2;





Strategy 1


Parameter Configuration (1/5)1. F2 is barred to force UE to camp on F1

MOD CELLACCESSSTRICT: CellId=xxxxx2, IsAccessClass0Barred=BARRED, IsAccessClass1Barred=BARRED, IsAccessClass2Barred=BARRED, IsAccessClass3Barred=BARRED, IsAccessClass4Barred=BARRED, IsAccessClass5Barred=BARRED, IsAccessClass6Barred=BARRED, IsAccessClass7Barred=BARRED, IsAccessClass8Barred=BARRED, IsAccessClass9Barred=BARRED, IsAccessClass10Barred=BARRED, IsAccessClass11Barred=BARRED, IsAccessClass12Barred=BARRED, IsAccessClass13Barred=BARRED, IsAccessClass14Barred=BARRED, IsAccessClass15Barred=BARRED, IdleCellBarred=BARRED, IdleIntraFreqReselection=NOT_ALLOWED, IdleTbarred=D320, ConnCellBarred=NOT_BARRED;

2. Setting DRD switch and close combined service switch. SET CORRMALGOSWITCH: HoSwitch=INTER_FREQ_HHO_SWITCH-1,

HspaSwitch=HSDPA_STATE_TRANS_SWITCH-0&HSUPA_STATE_TRANS_SWITCH-0, DrdSwitch=COMB_SERV_DRD_SWITCH-0&DRD_SWITCH-1&HSDPA_DRD_SWITCH-1&HSUPA_DRD_SWITCH-1&INTER_HO_D2H_DRD_SWITCH-1&INTRA_HO_D2H_DRD_SWITCH-1&RAB_DCCC_DRD_SWITCH-1&RAB_MODIFY_DRD_SWITCH-1&RAB_SETUP_DRD_SWITCH-1;


Parameter Configuration (2/5)

3. F1 and F2 configure to unidirectional blind HO. ADD INTERFREQNCELL: CellId=xxxx1, RncId=xxxxx, NCellId=xxxx2, SIB11Ind=TRUE, SIB12Ind=FALSE,

TpenaltyHcsReselect=D0, BlindHoFlag=TRUE, NPrioFlag=FALSE;

R99+HSDPA R99

R99+HSDPA

F1

F2

R99

R99+HSDPA

R99+HSDPA

Bidirectional neighboring relationUnidirectional neighboring relationUnidirectional blind HO neighbouring


4. Neighbor cell configuration:a) F1 &F2 configure intra-Freq Neighbor each other;b) F2 configure inter-Freq unidirectional neighbor to F1 in the border

covered by F2;c) F1& F2 configure the GSM neighbor cell.Intra-freq neighbour: ADD INTRAFREQNCELL: CellId=xxxxx, RncId=xxxxx, NCellId=xxxxx, SIB11Ind=TRUE,

SIB12Ind=FALSE, TpenaltyHcsReselect=D0, NPrioFlag=FALSE;Inter-freq neighbour: ADD INTERFREQNCELL: CellId=xxxx2, RncId=xxxxx, NCellId=xxxx1, SIB11Ind=TRUE,

SIB12Ind=FALSE, TpenaltyHcsReselect=D0, BlindHOFlag=FALSE, NPrioFlag=FALSE;Inter-RAT neighbour: ADD GSMNCELL


R99+HSDPA R99

R99+HSDPA

F1

F2

R99

R99+HSDPA

R99+HSDPA

Bidirectional neighboring relationUnidirectional neighboring relationUnidirectional blind HO neighbouring



5. Load Control, open F1 uplink &downlink LDR algorithm Set the LDR algorithm switch:

MOD CELLALGOSWITCH: NBMLdcAlgoSwitch=UL_UU_LDR-1&DL_UU_LDR-1;

Set the LDR algorithm: MOD CELLLDR: CellId=xxxx1, DlLdrFirstAction= BERateRed,

DlLdrSecondAction= NoAct, DlLdrThirdAction= NoAct, DlLdrFourthAction=NoAct, UlLdrFirstAction= BERateRed, UlLdrSecondAction= NoAct, UlLdrThirdAction=NoAct;

6. Configure F2 HSDPA code RNC

MOD CELLHSDPA: CellId=xxxx2, AllocCodeMode=Manual, HsPdschCodeNum=1, HsScchCodeNum=2;CodeAdjForHsdpaSwitch=OFF;

NodeB Dynamic Code Switch SET MACHSPARA: LOCELL=xxxx2, DYNCODESW=OPEN;



7. F2 I-RAT HO using RSCP, and close the EcIo by setting

the lower value. ADD CELLINTERRATHOCOV: CellId=xxxxx2,

InterRatReportMode=PERIODICAL_REPORTING, InterRATCSThd2DEcN0=-24,

InterRATR99PsThd2DEcN0=-24, InterRATHThd2DEcN0=-24;

8. Deactive the HSDPA function for the F1 cell. DEA CELLHSDPA:CELLID=xxxxF1;


Advantage and disadvantage of Strategy 1

No R99 and HSPA interference in F1.

Advantage

Lots of DRD attempts for HSPA service;

Only F2 can carry HSPA service;

Load is not balance between F1 and F2.

Disadvantage



Strategy 1


Strategy 3

Strategy 4







Idle Mode Selection/Reselection strategy2

R99+HSDPA R99+HSDPA

HSDPA+R99

R99+ HSDPA

F1

F2 Strategy 2: Camp on F1 or F2 randomly







Connected mode mobility strategy

F1 and F2 calls are soft handover between intra-freq cells.

HSDPA inter-freq HHO from F2 to F1 – leaving a hotspot

R99+HSDPA R99+ HSDPA

HSDPA+R99

R99+HSDPA R99+ HSDPA

HSDPA+R99

HSDPA service inter-freq HHO to F1.

User with HSDPA service in F2


Load balance strategy

Load balance between F1 and F2 in hotspots by DRD or LDR. R99 users can configured BE reduction as the first LDR actions.

F1

F2

R99+HSDPA R99+HSDPA R99+HSDPA

HSDPA+R99

User from F1 by DRD or

LDR

User from F2 by DRD or

LDR

Name Parameters introduction

LdbDRDOffsetDCHThe threshold of remanent load offset between the current cell and the target cell when load balancing DRD is applied for DCH users. Recommended value: 5% (SET DRD)

LdbDRDOffsetHSDPA

The threshold of remanent load offset between the current cell and the target cell when load balancing DRD is applied for HSDPA users.Recommended value: 5% (SET DRD)

DlInterFreqHoCellLoadSpaceThd

The inter-frequency neighboring cell could be selected as the destination of load handover only when its load remaining space is larger than this threshold. Recommended value: 20% (ADD CELLLDR)

Notes: DRD and LDR will be introduced in detail in Load Control slides.







Parameter Configuration (1/5)1. Setting DRD switch and close combined service switch. SET CORRMALGOSWITCH: HoSwitch=INTER_FREQ_HHO_SWITCH-1,

DrdSwitch=COMB_SERV_DRD_SWITCH-0&DRD_SWITCH-1&HSDPA_DRD_SWITCH-1&HSUPA_DRD_SWITCH-1&INTER_HO_D2H_DRD_SWITCH-1&INTRA_HO_D2H_DRD_SWITCH-1&RAB_DCCC_DRD_SWITCH-1&RAB_MODIFY_DRD_SWITCH-1&RAB_SETUP_DRD_SWITCH-1;

Load balance DRD switch for HSDPA: SET DRD: ServiceDiffDrdSwitch=OFF, LdbDrdSwitchDCH=OFF,

LdbDrdSwitchHSDPA=ON, LdbDRDchoice=UserNumber, LdbDRDOffsetHSDPA=5;

MOD CELLDRD: CellId=0, ServiceDiffDrdSwitch=OFF, LdbDRDSwitchDCH=ON, LdbDRDSwitchHSDPA=ON, LdbDRDchoice=UserNumber;



2. F1 and F2 configure to blind HO neighbor cell for the co-coverage cell each other. ADD INTERFREQNCELL: CellId=1, RncId=1, NCellId=2, SIB11Ind=TRUE, SIB12Ind=FALSE, TpenaltyHcsReselect=D0,

BlindHOFlag=TRUE, NPrioFlag=FALSE; ADD INTERFREQNCELL: CellId=2, RncId=1, NCellId=1, SIB11Ind=TRUE, SIB12Ind=FALSE, TpenaltyHcsReselect=D0,

BlindHOFlag=TRUE, NPrioFlag=FALSE;

Bidirectional neighboring relationUnidirectional neighboring relationBidirectional blind HO neighbouring

R99+HSDPA R99+HSDPA

R99+HSDPA

F1

F2

R99+HSDPA

R99+HSDPA

R99+HSDPA


3. Neighbor cell configuration:a) F1 &F2 configure intra-Freq Neighbor each other;b) F2 configure inter-Freq unidirectional neighbor to F1 in the border covered by F2.c) F1& F2 configure the GSM neighbor cell.

Intra-freq neighbour: ADD INTRAFREQNCELL: CellId=xxxxx, RncId=xxxxx, NCellId=xxxxx, SIB11Ind=TRUE, SIB12Ind=FALSE,

TpenaltyHcsReselect=D0, NPrioFlag=FALSE;Inter-freq neighbour: ADD INTERFREQNCELL: CellId=xxxx2, RncId=xxxxx, NCellId=xxxx1, SIB11Ind=TRUE, SIB12Ind=FALSE,

TpenaltyHcsReselect=D0, BlindHOFlag=FALSE, NPrioFlag=FALSE;Inter-RAT neighbour: ADD GSMNCELL



R99+HSDPA R99+HSDPA

R99+HSDPA

F1

F2

R99+HSDPA

R99+HSDPA

R99+HSDPA


Parameter Configuration (4/5) 4. Load Control ,open F1 uplink &downlink LDR algorithm

Set the LDR and DCCC algorithm switch: MOD CELLALGOSWITCH: NBMLdcAlgoSwitch=UL_UU_LDR-1&DL_UU_LDR-

1&CELL_CODE_LDR-1&CELL_CREDIT_LDR-1; SET CORRMALGOSWITCH: ChSwitch=DCCC_SWITCH-1,

HspaSwitch=HSUPA_DCCC_SWITCH-1; Set the LDR algorithm:

MOD CELLLDR: CellId=0, DlLdrFirstAction=CodeAdj, DlLdrSecondAction=BERateRed, DlLdrThirdAction=InterFreqLDHO, DlLdrFourthAction=CSInterRatShouldBeLDHO, UlLdrFirstAction=BERateRed, UlLdrSecondAction=InterFreqLDHO,






6. F2 I-RAT HO using RSCP, and close the EcIo by setting






Both F1 and F2 can establish and carry on HSPA service.

Balance load between F1 and F2

Keep DRD attempt in low quantity and it is good KPI for access.

Advantage

R99 and HSPA service establish in same cell, it would bring service interference each other, and it should be affect the call drop of AMR.

F2 should be covered in a large continuous area, otherwise it is not good feeling for AMR when the CS users hard handover between the inter frequency.

Disadvantage



Strategy 1


Strategy 3

Strategy 4


Camp on F1 in idle mode

Cell reselection make UE camp on F1 cell in advance by setting the threshold and offset for inter-frequency cell reselection in idle mode .

Or forcibly camp ： F2 cell is barred to force UE to camp on F1 in idle mode. (not recommend)

Idle Mode Strategy

Open the LDR algorithm, and set the LDR action as following:

Uplink: BE reduction->inter-Freq load HO->CS inter-RAT load HO

Downlink: Code Adjustment-> BE reduction->inter-Freq load HO->CS inter-RAT load HO

Connected mode Strategy

Open DRD algorithm switch;

Close combined service DRD switch.

Service steering DRD: ON

The SPG for R99 is same for F2&F1

The SPG for HSPA on F2 is higher than F1.

DCH Load balance DRD: OFF

HSDPA Load balance DRD: OFF

Accessed mode Strategy

Conditions ： Continuous coverage for F1, not continuous coverage for F2 F1 & F2 can support the R99 and HSPA (recommend) or F1 support R99 and F2 support HSPA (not recommend)

R99+HSPA

R99+HSPA

F1

F2

R99+HSPA R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

Strategy 3: Camp on F1 and Service Steering


Moving strategy:

Neighbor cell configuration:

F1

F2

intra-Freq Neighbor Inter-freq blind HO neighbor Common inter-freq

neighborInter-RAT neighbor cell

GSM

F1

F2

GSM

Intra-Freq HO Access DRDIRAT HO based coverage IRAT HO Inter-Freq HO based load for LDR

F1 &F2 configure intra-Freq Neighbor each other; F1 and F2 configure blind HO neighbor each other for the co-coverage cell, but not HO based

coverage; F2 configure inter-Freq unidirectional neighbor to F1 in the border covered by F2; F1& F2 configure the GSM neighbor cell, and GSM congfigure the F1 neighbor cell.

Strategy 3: Camp on F1 and Service Steering


Parameter Configuration (1/5)1. Setting DRD switch and close combined service switch. SET CORRMALGOSWITCH: HoSwitch=INTER_FREQ_HHO_SWITCH-1,

DrdSwitch=COMB_SERV_DRD_SWITCH-0&DRD_SWITCH-1&HSDPA_DRD_SWITCH-1&HSUPA_DRD_SWITCH-1&INTER_HO_D2H_DRD_SWITCH-1&INTRA_HO_D2H_DRD_SWITCH-1&RAB_DCCC_DRD_SWITCH-1&RAB_MODIFY_DRD_SWITCH-1&RAB_SETUP_DRD_SWITCH-1;

Service Steering DRD switch for HSDPA: SET DRD: ServiceDiffDrdSwitch=ON; ADD SPG: SpgId=1, PriorityServiceForR99RT=1, PriorityServiceForR99NRT=1,

PriorityServiceForHSPA=2; ADD SPG: SpgId=2, PriorityServiceForR99RT=1, PriorityServiceForR99NRT=1,

PriorityServiceForHSPA=1; MOD CELLSETUP: CellId=xxxxx1, SpgId=1; （ F1 ） MOD CELLSETUP: CellId=xxxxx2, SpgId=2; （ F2 ）



2. F1 and F2 configure to blind HO neighbor cell for the co-coverage cell each other. ADD INTERFREQNCELL: CellId=1, RncId=1, NCellId=2, SIB11Ind=TRUE, SIB12Ind=FALSE, TpenaltyHcsReselect=D0,

BlindHOFlag=TRUE, NPrioFlag=FALSE; ADD INTERFREQNCELL: CellId=2, RncId=1, NCellId=1, SIB11Ind=TRUE, SIB12Ind=FALSE, TpenaltyHcsReselect=D0,

BlindHOFlag=TRUE, NPrioFlag=FALSE;


R99+HSDPA R99+HSDPA

R99+HSDPA

F1

F2

R99+HSDPA

R99+HSDPA

R99+HSDPA


3. Neighbor cell configuration:a) F1 &F2 configure intra-Freq Neighbor each other;b) F2 configure inter-Freq unidirectional neighbor to F1 in the border covered by F2.c) F1& F2 configure the GSM neighbor cell.

Intra-freq neighbour: ADD INTRAFREQNCELL: CellId=xxxxx, RncId=xxxxx, NCellId=xxxxx, SIB11Ind=TRUE, SIB12Ind=FALSE,

TpenaltyHcsReselect=D0, NPrioFlag=FALSE;Inter-freq neighbour: ADD INTERFREQNCELL: CellId=xxxx2, RncId=xxxxx, NCellId=xxxx1, SIB11Ind=TRUE, SIB12Ind=FALSE,

TpenaltyHcsReselect=D0, BlindHOFlag=FALSE, NPrioFlag=FALSE;Inter-RAT neighbour: ADD GSMNCELL



R99+HSDPA R99+HSDPA

R99+HSDPA

F1

F2

R99+HSDPA

R99+HSDPA

R99+HSDPA


Parameter Configuration (4/5) 4. Load Control ,open F1 uplink &downlink LDR algorithm

Set the LDR and DCCC algorithm switch: MOD CELLALGOSWITCH: NBMLdcAlgoSwitch=UL_UU_LDR-1&DL_UU_LDR-

1&CELL_CODE_LDR-1&CELL_CREDIT_LDR-1; SET CORRMALGOSWITCH: ChSwitch=DCCC_SWITCH-1,

HspaSwitch=HSUPA_DCCC_SWITCH-1; Set the LDR algorithm:

MOD CELLLDR: CellId=0, DlLdrFirstAction=CodeAdj, DlLdrSecondAction=BERateRed, DlLdrThirdAction=InterFreqLDHO, DlLdrFourthAction=CSInterRatShouldBeLDHO, UlLdrFirstAction=BERateRed, UlLdrSecondAction=InterFreqLDHO, UlLdrThirdAction=CSInterRatShouldNotLDHO;





Parameter Configuration (5/5)6. F2 I-RAT HO using RSCP, and close the EcIo by setting




7. Cell reselection make UE camp on F1 cell in advance by setting the threshold and offset for inter-frequency cell reselection in idle mode. F1: MOD UCELLSELRESEL: CellId=xxxxxx, IdleSintersearch=0;

F2: MOD UCELLSELRESEL: CellId=xxxxxx, IdleSintersearch=9;

F1->F2: ADD INTERFREQNCELL: RncId=x, CellId=xxxxx, NCellRncId=x, NCellId=xxxxx,

IdleQoffset1sn=50, IdleQoffset2sn=50;

F2->F1: ADD INTERFREQNCELL: RncId=x, CellId=xxxxx, NCellRncId=x, NCellId=xxxxx,

IdleQoffset1sn=-50, IdleQoffset2sn=-50;



The interference is small between the HSPA service and the AMR.

It should be good feeling for R99 service when F2 is not continuous coverage, because the R99 service does not hard handover in this area.

Advantage

The HSPA accessibility should be affect by the DRD.

The HSPA call drop should be increase when HSPA service move with the hard handover in these not continuous coverage area for F2.

PS call drop should be increase when opening the function of state transition.

Disadvantage



Strategy 1


Strategy 3

Strategy 4


Strategy 4: Camp on F1 and Load balance

R99+HSPA

R99+HSPA

F1

F2

R99+HSPA R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

R99+HSPA

Conditions ： Continuous coverage for F1, not continuous coverage for F2 F1 & F2 can support the R99 and HSPA A few AMR users, most users is HSPA.

Idle Mode Strategy Connected mode StrategyAccessed mode Strategy

Camp on F1 in idle mode

Cell reselection make UE camp on F1 cell in advance by setting the threshold and offset for inter-frequency cell reselection in idle mode .

Or forcibly camp ： F2 cell is barred to force UE to camp on F1 in idle mode. (not recommend)

Open the LDR algorithm, and set the LDR action as following:

Uplink: BE reduction->inter-Freq load HO->CS inter-RAT load HO

Downlink: Code Adjustment-> BE reduction->inter-Freq load HO->CS inter-RAT load HO

Open DRD algorithm switch;

Close combined service DRD switch.

DCH Load balance DRD: OFF HSDPA Load balance DRD: ON

Load balance DRD choice: user number

Load balance DRD offset for HSDPA: 5

Load balance DRD power remain threshold for HSDPA :90


Moving strategy:

Neighbor cell configuration:

F1F2

GSM

Strategy 4: Camp on F1 and Load balance

intra-Freq Neighbor Inter-freq blind HO neighbor Common inter-freq

neighborInter-RAT neighbor cell

F1F2

GSM

Intra-Freq HO Access DRDIRAT HO based coverage IRAT HO Inter-Freq HO based load for LDR

F1 &F2 configure intra-Freq Neighbor each other; F1 and F2 configure blind HO neighbor each other for the co-coverage cell, but not HO based

coverage; F2 configure inter-Freq unidirectional neighbor to F1 in the border covered by F2; F1& F2 configure the GSM neighbor cell, and GSM congfigure the F1 neighbor cell.



The R99 service does not hard handover in not continuous coverage area for F2;

The resource of two carriers should be used fully.

Advantage

There are half HSPA users on F1,

and it will interfere the AMR users.

The accessibility should be affect by the half users DRD

It should be ease congestion in F1 when there are many traffic for R99 in F1, and it is bad feeling for HSPA service in F1.

PS call drop should be increase when opening the function of state transition.

Disadvantage

Thank You

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UMTS Multi Carrier Strategy and Configuration 20100622

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