2G to 4G LTE Cell reselection Parameter setting in Huawei Network

This post will tell you about Parameter setting related Cell re-selection from 2G to 4G LTE in Huawei Network. If you have new 4G network in your project and Inter working system 2G to 4G will be set properly, this post will be useful for you.Here are important parameter that need to  be set regarding 2G to 4G Cell reselection in Huawei Network.

-LTECELLRESELEN = YES(Enable Cell reselection GSM to LTE)
-GERANPRI =1(Cell reselection Priority LTE>UMTS>GSM)
-UTRANPRI =3(Cell reselection Priority LTE>UMTS>GSM)
-EUTRANPRI=6(Cell reselection Priority LTE>UMTS>GSM)
-THRUTRANHIGH=5
-UTRANQRXLEVMIN=2
-THREUTRANHIGH=9
-EUTRANQRXLEVMIN=6 (Minimum RSRP to camp on LTE)
-THREUTRANLOW=9
-QPEUTRAN=15

Description of all above parameter can be listed as below :
-LTECELLRESELEN:Whether to allow cell reselection from GSM to LTE cells. When this parameter is set to YES, cell reselection from GSM to LTE cells is allowed.
-GERANPRI:Common priority of GERAN. Value 0 indicates the lowest priority, and value 7 indicates the highest priority.
-UTRANPRI:Public priority of a neighboring UTRAN cell configured for an operator. Value 0 represents the lowest priority, value 7 represents the highest priority, and value 255 is invalid. This parameter corresponds to the DEFAULT_UTRAN_PRIORITY IE in SI23 in 3GPP TS 44.018.
The parameter value complies with the following rules:
1. If this parameter is set to a value other than 255, the parameter value is used.
2. If this parameter is set to 255, the value of [GCELLPRIEUTRANSYS:UTRANPRI] for the cell is used.
-EUTRANPRI:Public priority of a neighboring EUTRAN cell configured for an operator. Value 0 represents the lowest priority, value 7 represents the highest priority, and value 255 is invalid. This parameter corresponds to the DEFAULT_E-UTRAN_PRIORITY IE in SI23 in 3GPP TS 44.018.
The parameter value complies with the following rules:
1. If this parameter is set to a value other than 255, the parameter value is used.
2. If this parameter is set to 255, the value of [GCELLPRIEUTRANSYS:EUTRANPRI] for the cell is used.
-THRUTRANHIGH:High threshold of a neighboring UTRAN cell configured for an operator. When the measured RSCP/EcNo values of one or multiple neighboring UTRAN cells are higher than the threshold, UEs are allowed to reselect a neighboring UTRAN cell with a priority higher than that of a GERAN cell. This parameter corresponds to the THRESH_UTRAN_high IE in SI23 in 3GPP TS 44.018.
The mapping of parameter values onto actual values is:
0 = 0 dB,
1 = 2 dB,
2 = 4 dB,
3 = 6 dB,
...,
30 = 60 dB,
31 = 62 dB,
255 = invalid.
The parameter value complies with the following rules:
1. If this parameter is set to a value other than 255, the parameter value is used.
2. If this parameter is set to 255, the value of [GCELLPRIEUTRANSYS:THRUTRANHIGH] for the cell is used.
-UTRANQRXLEVMIN:Used to calculate the RSCP threshold for the target cell when a priority-based decision to perform GSM to UTRAN cell reselection is made.
The values of this parameter correspond to the following decibel values:
0: -119 dBm,
1: -117 dBm,
2: -115 dBm,
...,
30: -59 dBm,
31: -57 dBm.
-THREUTRANHIGH:High threshold of a neighboring EUTRAN cell configured for an operator. When the measured RSRP values of one or multiple neighboring EUTRAN cells are higher than the threshold, UEs are allowed to reselect a neighboring UTRAN cell with a priority higher than that of a GERAN cell. This parameter corresponds to the THRESH_E-UTRAN_high IE in SI23 in 3GPP TS 44.018.
The mapping of parameter values onto actual values is:
0 = 0 dB,
1 = 2 dB,
2 = 4 dB,
3 = 6 dB,
...,
30 = 60 dB,
31 = 62 dB,
255 = invalid.
The parameter value complies with the following rules:
1. If this parameter is set to a value other than 255, the parameter value is used.
2. If this parameter is set to 255, the value of [GCELLPRIEUTRANSYS:THREUTRANHIGH] for the cell is used.
-EUTRANQRXLEVMIN:Used to calculate the RSRP threshold for the target cell when a priority-based decision to perform GSM to EUTRAN cell reselection is made.
The values of this parameter correspond to the following decibel values:
0: -140 dBm,
1: -138 dBm,
2: -136 dBm,
...,
30: -80 dBm,
31: -78 dBm.
-THREUTRANLOW:Low threshold of a neighboring EUTRAN cell configured for an operator. A UE can reselect a neighboring EUTRAN cell that has a lower priority than the GERAN cell if the receive levels of the serving cell and all neighboring GSM cells are lower than the threshold specified by THRGSMLOW and the measured RSRP values of one or multiple neighboring EUTRAN cells are higher than the threshold. This parameter corresponds to the THRESH_E-UTRAN_low IE in SI23 in 3GPP TS 44.018.
The mapping of parameter values onto actual values is:
0 = 0 dB,
1 = 2 dB,
2 = 4 dB,
3 = 6 dB,
...,
30 = 60 dB,
31 = 62 dB,
255 = invalid.
The parameter value complies with the following rules:
1. If this parameter is set to a value other than 255, the parameter value is used.
2. If this parameter is set to 255, the value of [GCELLMOCNINTERRESEL:ThrEUTRANLow] is used. If the value of [GCELLMOCNINTERRESEL:ThrEUTRANLow] is 255, the value of [GCELLPRIEUTRANSYS:THREUTRANLOW] for the cell is used.
-QPEUTRAN:Threshold of signal level at which a mobile station starts to search for the target EUTRAN cell during cell reselection. In packet mode, if this parameter is set to a value lower than 7, the mobile station starts to search for an EUTRAN cell when the signal level of the serving cell is lower than the corresponding level threshold. If this parameter is set to a value higher than 7, the mobile station starts to search for an EUTRAN cell when the signal level of the serving cell is higher than the corresponding level threshold.

The values of this parameter correspond to the following decibel values:

0= -98dBm,

1= -94dBm,

2= -90dBm,
...,

7= (always), that is, the MS always searches for neighboring cells in EUTRAN.

8= -78dBm,

9= -74dBm,

10= -70dBm,
...,


14= -54dBm,

15= (never), that is, the MS never searches for neighboring cells in EUTRAN.

Those parameter are important parameter that need to be set in your network in order to enable cell re-selection 2G to 4G(LTE) in Huawei Network.Those parameter also need License, so be careful and check license first before implemented.

You might also need to know:

- Enable PS Redirection from 3G to 4G in Huawei Network

- 3G Call SetUp Time(CST) optimization by EFD state transition optimization in Huawei

- 3G UMTS/WCDMA Drop Call Rate Improvement(DCR CS/PS) in 3G Network Huawei

- VQI Optimization Improvement by turn off Speech codec 5.9, 7.4 and 4.75 Kbps in Huawei 2G Network

- VQI(Voice Quality Index) and Drop Call rate improvement in 2G Huawei by Setting more Full Rate and redimension channel

- 2G Theory and Concept

- Common question about RF Optimization

- TCH Block Rate Optimization Tips in Huawei GSM

- 2G Voice Quality Improvement by TRX Layering priority in Huawei GSM

- TBF Drop Improvement tips in Huawei GSM

- GPRS Packet Data Access Success Rate(PDASR) Improvement in Huawei GSM
- Call Drop Rate improvement by Parameter change in 3G UMTS/WCDMA Huawei Network

- Trial Power Control in GSM Huawei for Quality Improvement

- Power Control activation for Electricity Saving in Huawei GSM

- Handover Meaning in GSM and How to Optimize Handover Success Rate (HOSR) for GSM KPI Improvement

- WCDMA CSSR Optimization Tips

- CSSR Optimization for GSM and WCDMA

- Drop Call Rate Optimization, How to identify and finding root cause for Optimization solution on GSM and UMTS Network

Enable PS Redirection from 3G to 4G in Huawei Network

In this sharing, I would like to share you about how to Enable PS Redirection from 3G to 4G in Huawei Network. In The beginning of new 4G network in my project this kind activity would be done in Optimization activity. Here are some parameter in 3G that need to be created in CR (Change Request) regarding enabling PS Redirection from 3G to 4G LTE in Huawei Network.

//PS HO & redirection due to Load related
MOD UCELLLDR: CellId=xxx, DlLdr(Third)Action=PSInterU2LLDHO, UlLdr(Third)Action=PSInterU2LLDHO, UlPSU2LHOUeNum=1, DlPSU2LHOUeNum=1;(SET FOR LAST ACTION)

SET UCORRMALGOSWITCH: HoSwitch=HO_LTE_PS_OUT_SWITCH-1&HO_LTE_SERVICE_PS_OUT_SWITCH-1,HOSWITCH1=HO_U2L_COV_PS_REDIRECT_SWITCH-1&HO_U2L_LOAD_PS_REDIRECT_SWITCH-1;
MOD ULTENCELL: RNCId=xxx, CellId=xxx, LTECellIndex=xxx, BlindFlag=TRUE; (Colo Only)
MOD ULTECELL: LTECellIndex=xxx, SuppPSHOFlag=NotSupport;
SET UHOCOMM: U2LBlindRedirPingpongTimer=60;
MOD UCELLHOCOMM: CellId=xxx, U2LBlindRedirSwitch=ON;
MOD UTYPRABBASIC: RabIndex=xxx, EUTRANSHIND=HO_TO_EUTRAN_SHOULD_BE_PERFORM;(all RABINDEX for CNDOMAINID = PS_DOMAIN)

SET UU2LTEHOCOV: LTEReportMode=EVENT_TRIGGER, UsedFreqThdRSCP=-107, LTEMeasQuanOf3A=RSRP, Hystfor3A=4, TrigTime3A=D0, U2LTEFilterCoef=D3, U2LTEMeasTime=30, TargetRatThdRSRP=36,TargetRatThdRSRQ=20;
ADD UCELLU2LTEHOCOV: CellId=xxx, LTEReportMode=EVENT_TRIGGER, LTEMeasQuanOf3A=RSRP, UsedFreqThdRSCP=-107, Hystfor3A=4, TrigTime3A=D0, U2LTEFilterCoef=D3, U2LTEMeasTime=30,TargetRatThdRSRP=36, TargetRatThdRSRQ=20;

SET UU2LTEHONCOV:LTEMEASTYPOF3C=MeasurementQuantity, U2LTEFILTERCOEF=D6, U2LTEMEASTIME=30, LTEMEASQUANOF3C=RSRP, HYSTFOR3C=2, TRIGTIME3C=D10, TARGETRATTHDRSRP=20, TARGETRATTHDRSRQ=30, BESTCELLTRIGLTEMEASSWITCH=OFF, U2LPUNISHTIMER=5, U2LPUNISHSWITCH=ON, ANTIPINPANLTEFDDREDRSWITCH=OFF, U2LPHYCHFAILNUM=3, PENALTYTIMEFORPHYCHFAIL=30, U2LSERVMCTIMEOUTPUNISHTIME=60,U2LSERVTRIGSOURCE=U2L_SERV_RAB_SETUP_TRIGGER-0&U2L_SERV_LOWACTIVE_TRIGGER-1&U2L_SERV_PERIOD_TRIGGER-1&U2L_SERV_RB_REL_TRIGGER-0&U2L_SERV_IUCS_REL_TRIGGER-0&U2L_SERV_OTHER_TRIGGER-0,U2LSERVPRDTRIGTIMERLEN=10, U2LNCOVRSCPTHD=-90, U2LNCOVRSCPPRDTIMER=D2000, SIGTARGETRATTHDRSRP=36, SIGTARGETRATTHDRSRQ=20, U2LTESIGMEASTIME=3, U2LPUNISHTIMERLENFORLOAD=0;

ADD UCELLU2LTEHONCOV:CELLID=xxx, LTEMEASTYPOF3C=MeasurementQuantity, U2LTEFILTERCOEF=D6, U2LTEMEASTIME=30, LTEMEASQUANOF3C=RSRP, HYSTFOR3C=2, TRIGTIME3C=D10,TARGETRATTHDRSRP=20,TARGETRATTHDRSRQ=30, BESTCELLTRIGLTEMEASSWITCH=OFF, U2LSERVTRIGSOURCE=U2L_SERV_RAB_SETUP_TRIGGER-0&U2L_SERV_LOWACTIVE_TRIGGER-1&U2L_SERV_PERIOD_TRIGGER-0&U2L_SERV_RB_REL_TRIGGER-0&U2L_SERV_IUCS_REL_TRIGGER-0&U2L_SERV_OTHER_TRIGGER-0,U2LSERVALGOSWITCH=HO_LTE_SERVICE_PSHO_OUT_SWITCH-0&HO_LTE_SERVICE_PS_OUT_SWITCH-1&HO_LTE_SERVICE_NEED_RSCP_SWITCH-1&HO_LTE_SERVICE_BLIND_FIRST_SWITCH-0, U2LNCOVRSCPTHD=-90, U2LGRIDINFOLOWTHD=1, U2LGRIDINFOHIGHTHD=99;

SET UCORRMALGOSWITCH: HoSwitch1=HO_U2L_REDIR_BASED_ABSOLUTE_FREQ_SWITCH-1;
SET UCORRMALGOSWITCH: PsSwitch=PS_CMACTIVE_PROCESS_OPT_SWITCH-1;
SET UCORRMPARA: PerfEnhanceSwitch5=PERFENH_U2L_SERV_NOT_TRIG_WHEN_CSPAGING-1;
SET UCORRMPARA:PERFENHANCESWITCH2=PERFENH_CS_P2D_TRIG_SERVICE_U2L_SWITCH-0&PERFENH_RB_RECFG_TRIG_SERVICE_U2L_SWITCH-0;
SET UHOCOMM: U2LBlindRedirPingpongTimer=60;
ADD UCELLCMUSERNUM: CellId=xxx, U2LNCovPSCmUserNumThd=20;
SET UCORRMPARA: PerfEnhanceSwitch2=PERFENH_PERMIT_U2L_ONLY_UE_FROM_L_SWITCH-1;
SET UCORRMALGOSWITCH: HoSwitch1=HO_IUR_U2L_REDIR_SWITCH-0;
SET UCMCF: McHsdpaLteCMPermissionInd=FALSE;
SET UCORRMALGOSWITCH:HoSwitch1=HO_MC_LTE_NCELL_COMBINE_SWITCH-0;
SET UCORRMPARA: PerfEnhanceSwitch2=PERFENH_LTE_NCELL_SEL_OPT_SWITCH-1;
SET UCORRMPARA: PerfEnhanceSwitch5=PERFENH_U2L_PUNISH_HOLD_WHEN_DF2P_SWITCH-1;
SET UCORRMPARA: PerfEnhanceSwitch5=PERFENH_IUCS_REL_TRIG_U2L_SERV_OP_SWITCH-1;
SET UCORRMPARA: PerfEnhanceSwitch5=PERFENH_CM_STATE_FORBID_CHL_RETRY_SWITCH-1;

All Above Parameter command are important that need to be set in RNC and Cell level for enabling PS redirection from 3G to 4G in Huawei Network.

You might also need to know
- 3G Call SetUp Time(CST) optimization by EFD state transition optimization in Huawei
- 3G UMTS/WCDMA Drop Call Rate Improvement(DCR CS/PS) in 3G Network Huawei
- VQI Optimization Improvement by turn off Speech codec 5.9, 7.4 and 4.75 Kbps in Huawei 2G Network
- VQI(Voice Quality Index) and Drop Call rate improvement in 2G Huawei by Setting more Full Rate and redimension channel
- 2G Theory and Concept
- Common question about RF Optimization
- TCH Block Rate Optimization Tips in Huawei GSM
- 2G Voice Quality Improvement by TRX Layering priority in Huawei GSM
- TBF Drop Improvement tips in Huawei GSM
- GPRS Packet Data Access Success Rate(PDASR) Improvement in Huawei GSM
- Call Drop Rate improvement by Parameter change in 3G UMTS/WCDMA Huawei Network
- Trial Power Control in GSM Huawei for Quality Improvement
- Power Control activation for Electricity Saving in Huawei GSM
- Handover Meaning in GSM and How to Optimize Handover Success Rate (HOSR) for GSM KPI Improvement
- WCDMA CSSR Optimization Tips
- CSSR Optimization for GSM and WCDMA
- Drop Call Rate Optimization, How to identify and finding root cause for Optimization solution on GSM and UMTS Network

3G Call SetUp Time(CST) optimization by EFD state transition optimization in Huawei

In this Post I'm going to share about Call Set up Time(CST) Optimization in 3G by EFD(Enhanced Fast Dormancy) state transition Optimization in Huawei Network. The step is performed by modify RNC Parameter related EFD state transition by Choose P2F2D rather than P2D transition in CST(Call Set up Time).
P2F2D = PCH to FACH to DCH
P2D = PCH to DCH.

The Background of this activity:
- CS  Setup after P2D needs activation time, while P2F2D doesn’t need
- CS RB SETUP Message sent on DCH consumes more time than that on FACH.
(the signaling bit rate of DCH is 13.6Kbps, while the signaling bit rate of FACH is 25.6Kbps).

The step for this activity is just to activate and running command as below Script:
MML(R16):
SET URRCTRLSWITCH: OptimizationSwitch=CS_SETUP_P2D_SWITCH-0;
SET URRCTRLSWITCH: OptimizationSwitch4=RB_SETUP_F2D_USE_AM_RLC_SWITCH-1;

Based on trial in my project, CST improved from 8.8ms to 8.6ms(1%)

Please note this method of CST(Call Set up Time) optimization is not my initiation, but based on expert people in my project and already implemented all RNC's. Hope this post will be use full for you regarding Call Setup Optimization Time. Thanks.

You might also Need to know:
- 3G UMTS/WCDMA Drop Call Rate Improvement(DCR CS/PS) in 3G Network Huawei
- VQI Optimization Improvement by turn off Speech codec 5.9, 7.4 and 4.75 Kbps in Huawei 2G Network
- VQI(Voice Quality Index) and Drop Call rate improvement in 2G Huawei by Setting more Full Rate and redimension channel
- 2G Theory and Concept
- Common question about RF Optimization
- TCH Block Rate Optimization Tips in Huawei GSM
- 2G Voice Quality Improvement by TRX Layering priority in Huawei GSM
- TBF Drop Improvement tips in Huawei GSM
- GPRS Packet Data Access Success Rate(PDASR) Improvement in Huawei GSM
- Call Drop Rate improvement by Parameter change in 3G UMTS/WCDMA Huawei Network
- Trial Power Control in GSM Huawei for Quality Improvement
- Power Control activation for Electricity Saving in Huawei GSM
- Handover Meaning in GSM and How to Optimize Handover Success Rate (HOSR) for GSM KPI Improvement
- WCDMA CSSR Optimization Tips
- CSSR Optimization for GSM and WCDMA
- Drop Call Rate Optimization, How to identify and finding root cause for Optimization solution on GSM and UMTS Network