交流材料切换掉话优化方法

切换掉话优化Kerry

2015-04-16上行失步机制掉线/掉线信令过程Nokia私有上下行同失步机制切换优化方法切换信令及过程详细介绍切换详细Counter切换详细Counter小区选择原理（S准则）公式转换后如下：同频邻区测量启动条件

采用电平的条件

采用RSRQ质量的条件s-IntraSearch,p:取值范围(0…..64)，单位db，步长2，实际值=协议值*2distNamesIntrasearchqHystqrxlevminqRxLevMinOffsetpMaxOwnCell513831_10483dB-130234

Qrxlevmin:实际值=协议值*2,步长2dbQhyst:实际值=协议值,步长1dbpMaxOwnCell:表示UE在PRACH上的最大发射功率,值34代表NotUsed,采用终端本身的最大功率P_maxSintra,search:实际值=协议值*2,步长2db服务小区重选相关参数在SIB3下发注:诺基亚SCF文件导出来的为真实值系统内同频重选过程（S准则+R准则）1、邻区的Srxlev>0或Squal=RSRSRPqulity–Qqual,min>0，即2、邻区的信号足够强:Rn-Rs>Qhyst且持续一定的时间qHyst，步长1db，小区重选电平迟滞

tReselEutreNodeB_LcrIDearfcncellReSelPriotReselEutrsIntrasearchqHyst511744_103835061483dB同频邻区信息在SIB4中下发,另外还有高速移动和中速移动时的重选是否需加快的情况,在此不再描述

系统内异频重选（必要条件）公式转换后如下：测量启动条件

此种情况下：只要终端一旦正确驻留后，就开始测量高优先级的异频邻区，无视本系统LTE小区的信号电平或质量,高优先级监测周期(s)：60*Nlayers，Nlayers是除GSM外所有高优先级频点个数，GSM频点是按组分，一组算一个

异频或异系统邻区为绝对高优先级重选条件采用电平（LTE中设置异频或邻区的优先级值比本小区的优先级要高）distNameS_earfcnSvr_CellPriodlCarFrqEuteutCelResPriomeasBdwinterTResEutqOffFrqinterFrqThrHinterPresAntPqRxLevMinInterFpMaxInterF510470_11383506392507100mbw10dB34true-13034

异频邻区为同优先级（LTE中设置异频或邻区的优先级值等于本小区的优先级）distNameSvr_EARFCNsvr_CellResPriodlCarFrqEuteutCelResPrioqOffFrqinterTResEut510470_113835063790060dB1注意:异频邻区在SIB5中下发distNamecellReSelPriosNonIntrsearch513526_41644测量启动条件

：当前LTE服务小区信号电平或质量较差时，启动异频或异系统邻区信号的测量LTE2G/3G的异系统重选:邻区为绝对低优先级重选条件重选条件(采用电平)（LTE中设置异频或异系统的优先级绝对值比本小区的优先级要低）}0),/max(_)(max{,int)min(,sxPslpMaxOwnCelprasearchSnonsQrxlevsRSRP-++£采用电平(目前采用电平方式)distNametResUtraTD-dlCarFrqUtraTD-pMaxUtraTD-qRxLevMinTD-uCelResPrioTD-utraFrqThrL508577_1021010024-10338distNamecellReSelPriosNonIntrsearch513526_41620eNode_LcrIDbandIndgCelResPriogerFrqThrHqRxLevMinGerpMaxGergerFrqThrLgerArfcnVal510574_30gsm1800218-1033384055544525同频测量启动条件A2事件

：当前LTE服务小区信号电平低于某Threshold1-hyst/2时启动对同频邻区测量连接状态下LTE系统内同频测量同频测量停止条件

：针对已启动同频邻区测量时,如果此时服务小区信号高于Threshold+hyst/2时停止对同频邻区的测量(在NSN中此参数没有看到在协议中下发,就表示UE在连接状态下一直测量)连接状态下LTE系统内同频切换(A3事件,基于相对电平)A3事件:邻区比服务小区信号好，差值高于某门限（现网使用）(LTE系统内切换)A3切换满足条件:A3切换离开条件:distNamethreshold1enableBetterCellHohysA3Offset514426_1090true0a3Offseta3TimeToTriggera3ReportInterval6320ms1024ms注意:切换中所有Threshold门限=协议值-140dbm所有迟滞hyst真实值=协议值/2a=½^(k/4)，k为滤波系数

filterCoefficent，滤波系数k采样频率为200ms连接状态下LTE系统内同频切换(A5事件,基于TimerCritical的紧急覆盖切换)A5事件:邻自已实在不行了,同时邻区中有信号较好的,A5切换满足条件:A5覆盖切换离开条件:enableCovHothresholdthreshold3ahysThreshold3a5TimeToTriggera5ReportIntervaltrue30330320ms240ms连接状态下LTE系统内同频测量控制及测量报告measConfig{

measObjectToAddModList{

{

measObjectId1,

measObjectmeasObjectEUTRA:{

carrierFreq38350,

allowedMeasBandwidthmbw100,

presenceAntennaPort1TRUE,

neighCellConfig'00'B,

offsetFreqdB0

}

},

{

measObjectId2,

measObjectmeasObjectEUTRA:{

carrierFreq39250,

allowedMeasBandwidthmbw100,

presenceAntennaPort1TRUE,

neighCellConfig'00'B,

offsetFreqdB0

}

}

},

reportConfigToAddModList{

reportConfigId1,

reportConfigreportConfigEUTRA:{

triggerTypeevent:{

eventIdeventA3:{

a3-Offset6,

reportOnLeaveFALSE

},

hysteresis0,

timeToTriggerms320

},

triggerQuantityrsrp,

reportQuantitysameAsTriggerQuantity,

maxReportCells8,

reportIntervalms1024,

reportAmountinfinity

}

reportConfigId2,

reportConfigreportConfigEUTRA:{

triggerTypeevent:{

eventIdeventA5:{

a5-Threshold1threshold-RSRP:30,

a5-Threshold2threshold-RSRP:33

},

hysteresis0,

timeToTriggerms320

},

triggerQuantityrsrp,

reportQuantitysameAsTriggerQuantity,

maxReportCells8,

reportIntervalms240,

reportAmountinfinity连接状态下LTE系统内同频测量控制及测量报告

{

reportConfigId3,

reportConfigreportConfigEUTRA:{

triggerTypeperiodical:{

purposereportStrongestCells

},

triggerQuantityrsrp,

reportQuantityboth,

maxReportCells8,

reportIntervalms10240,

reportAmountinfinity,

ue-RxTxTimeDiffPeriodical-r9setup

}

},

{

reportConfigId4,

reportConfigreportConfigEUTRA:{

triggerTypeevent:{

eventIdeventA5:{

a5-Threshold1threshold-RSRP:30,

a5-Threshold2threshold-RSRP:33

},

hysteresis0,

timeToTriggerms256

},

triggerQuantityrsrp,

reportQuantitysameAsTriggerQuantity,

maxReportCells8,

reportIntervalms480,

reportAmountinfinity

}

measIdToAddModList{

{

measId1,

measObjectId1,

reportConfigId1

},

{

measId2,

measObjectId1,

reportConfigId2

},

{

measId4,

measObjectId1,

reportConfigId8

},

{

measId7,

measObjectId1,

reportConfigId6

},

{

measId9,

measObjectId1,

reportConfigId3

measId12,

measObjectId2,

reportConfigId7连接状态下LTE系统内异频切换与系统内同频切换原理一样,同样有:何时开始或停止测量异频邻区启动异频邻区测量条件停止异频邻区测量条件distNamethreshold2InterFreqhysThreshold2InterFreqthreshold2ahysThreshold2a514426_10300334也同样有:A3和A5的两种切换事件异频A3切换条件异频A5切换条件连接状态下LTE异系统重定向与系统内同频切换原理一样,同样有:何时开始或停止测量异频邻区启动异频邻区测量条件停止异频邻区测量条件distNamethreshold2InterFreqhysThreshold2InterFreqthreshold2ahysThreshold2a514426_10300334也同样有:A3和A5的两种切换事件异频A3切换条件异频A5切换条件异系统切换---也叫重定向(A2事件或B2事件)目前NSN采用A2盲重定向事件指服务小区信号很差时，指自已实在不行了,同时邻区中也没有信号好,需要去异系统,B2事件原理与A5相同.A2重定向满足条件:A2重定向离开条件:distNamehysThreshold4threshold4a2TimeToTriggerRedirect514426_10422320ms切换信令(同一eNB不同小区切换)UEeNodeB:510504_10RRCreconfiguration(MeasurementControl)RRCreconfigurationCompleter(MCAck)MeasurementReport进行切换判决/切换准入控制PC-FICHPDCCHRRCreconfiguration(专用preamble-PDSCH)PreambleRAR(PCFICH/PDCCH)RRCreconfigurationcompleteSUCC_INTRA_ENB_HO100xxxxx100t304eNodeB:510504_30HandoverpreparationtoimformationtocellHandoverCommandTOT_HO_DECISIONTOT_NOT_START_HO_PREPINTRA_ENB_HO_PREP10000INTRA_ENB_HO_SUCC==ATT_INTRA_ENB_HO10000eNodeB内切换相关CounterCounterID(fromNE)NameintableNECounterNameM8009C0TOT_NOT_START_HO_PREPTotalnotstartedHandoverpreparationsM8009C1TOT_HO_DECISIONTotalHandoverdecisionsM8009C2INTRA_ENB_HO_PREPIntraeNBHandoverpreparationsM8009C3FAIL_ENB_HO_PREP_ACFailedIntraeNBHandoverpreparationsduetoAdmissionControlM8009C5FAIL_ENB_HO_PREP_OTHFailedIntraeNBHandoverpreparationsduetootherreasonsM8009C6ATT_INTRA_ENB_HOAttemptedintraeNBHOM8009C7SUCC_INTRA_ENB_HOSuccessfulintraeNBHOM8009C8ENB_INTRA_HO_FAILTotalintraeNBHOfailuresduetotimerM8009C12ENB_HO_DROP_RLFAILIntraeNBHOdropsduetoRLfailureM8009C13ENB_HO_DROP_OTHERFAILIntraeNBHOdropsduetootherfailureTable:M8009切换信令(同一MME不同eNB，基于X2切换）UES_eNodeBRRCreconfiguration(MeasurementControl)RRCreconfigurationCompleter(MCAck)MeasurementReport进行切换判决/切换准入控制PC-FICHPDCCHRRCreconfiguration(专用preamble-PDSCH)PreambleRAR(PCFICH/PDCCH)RRCreconfigurationcompleteSUCC_INTER_ENB_HOATT_INTER_ENB_HOt304T_eNodeBHandoverrequestHandoverrequestAcknowledgeTOT_HO_DECISION/TOT_NOT_START_HO_PREPINTER_ENB_HO_PREPUEcontextdatarequestUEcontextdataresponseUEcontextdatacommandUEcontextdataforwardingSNSStatusTransferMMESGW+PGWPathSwitchrequestUserplaneupdaterequestUserplaneupdateresponsePathSwitchrequesAckUEcontextreleaseINTER_ENB_HO_PREP_SUCC==================ATT_INTER_ENB_HOtDataFwdS1tDataFwdx2tX2RelocComptX2RelocExcDTX2RELOCexecX2和S1切换相关CounterCounterID_NENameNECounterNameM8014C0INTER_ENB_HO_PREPIntereNBHandoverpreparationsM8014C2FAIL_ENB_HO_PREP_TIMEFailedIntereNBHandoverpreparationsduetotimerM8014C3FAIL_ENB_HO_PREP_ACFailedIntereNBHandoverpreparationsduetotargeteNBadmissioncontrolM8014C5FAIL_ENB_HO_PREP_OTHERFailedIntereNBHandoverpreparationsduetootherreasonM8014C6ATT_INTER_ENB_HOAttemptedintereNBHOM8014C7SUCC_INTER_ENB_HOSuccessfulintereNBHOM8014C8INTER_ENB_HO_FAILIntereNBHOfailuresduetotimerM8014C14INTER_ENB_S1_HO_PREPIntereNBS1-HandoverpreparationsM8014C15INTER_S1_HO_PREP_FAIL_TIMEFailedIntereNBS1-HandoverpreparationsduetotimerM8014C16INTER_S1_HO_PREP_FAIL_NORRFailedIntereNBS1-HandoverpreparationsduetotargeteNBadmissioncontrolM8014C17INTER_S1_HO_PREP_FAIL_OTHERFailedIntereNBS1-HandoverpreparationsduetootherreasonM8014C18INTER_ENB_S1_HO_ATTAttemptedintereNBS1-HOM8014C19INTER_ENB_S1_HO_SUCCSuccessfulintereNBS1-HOM8014C20INTER_ENB_S1_HO_FAILIntereNBS1-HOfailuresduetotimerTable:M8014切换信令(同一MME不同eNB，基于S1切换）UES_eNodeBRRCreconfiguration(MeasurementControl)RRCreconfigurationCompleter(MCAck)MeasurementReport进行切换判决PC-FICHPDCCHRRCreconfiguration(专用preamble-PDSCH)PreambleRAR(PCFICH/PDCCH)RRCreconfigurationcompleteSUCC_INTER_ENB_S1_HOATT_INTER_ENB_S1_HOt304T_eNodeBHandoverrequestHandoverrequestAcknowledgeINTER_ENB_S1_HO_PREPUEcontextdatarequestUEcontextdataresponseUEcontextdatacommandUEcontextdataforwardingSNSStatusTransfer/MMEStatustransferMMESGW+PGWeNBstatustransferMMEstatustransferUEcontextreleasecommandINTER_ENB_S1_HO_PREP_SUCC=====ATT_INTER_ENB_S1_HOHandoverrequiredHandoverCommandUEcontextreleasecompleteHandoverNotifytDataFwdEpc切换常用优化方法(MMEPool问题)distNamemainMmeIpAddrPrimmmeIpAddressListmmeIpAddressList1mmeIpAddressList2509498100.82.254.35100.82.254.67100.82.254.205100.82.254.229切换常用优化方法(MMEPool问题)distNamemainMmeIpAddrPrimmmeIpAddressListmmeIpAddressList1mmeIpAddressList2509498100.82.254.35100.82.254.67100.82.254.205100.82.254.229时间小区名INTER_ENB_S1_HO_ATTINTER_ENB_S1_HO_PREPS1切换准备成功率备注07.09.2014翠屏路昌南大道景观塔３66100.00%只使用ＭＭＥ：100.82.254.6707.09.2014翠屏路昌南大道景观塔１1414100.00%只使用ＭＭＥ：100.82.254.6707.09.2014翠屏路昌南大道景观塔２26526898.88%只使用ＭＭＥ：100.82.254.6707.10.2014翠屏路昌南大道景观塔２1723,2955.22%只使用ＭＭＥ：100.82.254.6707.10.2014翠屏路昌南大道景观塔３1414100.00%只使用ＭＭＥ：100.82.254.6707.10.2014翠屏路昌南大道景观塔１3496.12%只使用ＭＭＥ：100.82.254.6707.11.2014翠屏路昌南大道景观塔２175,9710.28%只使用ＭＭＥ：100.82.254.6707.11.2014翠屏路昌南大道景观塔３31225.00%只使用ＭＭＥ：100.82.254.6707.11.2014翠屏路昌南大道景观塔１172247.59%只使用ＭＭＥ：100.82.254.6707.12.2014翠屏路昌南大道景观塔１871,7195.06%只使用ＭＭＥ：100.82.254.6707.12.2014翠屏路昌南大道景观塔２764,8381.57%只使用ＭＭＥ：100.82.254.6707.12.2014翠屏路昌南大道景观塔３3823016.52%只使用ＭＭＥ：100.82.254.6707.13.2014翠屏路昌南大道景观塔１306446.88%只使用ＭＭＥ：100.82.254.6707.13.2014翠屏路昌南大道景观塔２1832,4717.41%只使用ＭＭＥ：100.82.254.6707.13.2014翠屏路昌南大道景观塔３324080.00%使用ＭＭＥ：100.82.254.6707.14.2014翠屏路昌南大道景观塔２3241,28125.29%14号12点更改只使用ＭＭＥ：100.82.254.3507.14.2014翠屏路昌南大道景观塔１495785.96%14号12点更改只使用ＭＭＥ：100.82.254.3507.14.2014翠屏路昌南大道景观塔３222491.67%14号12点更改只使用ＭＭＥ：100.82.254.3507.15.2014翠屏路昌南大道景观塔１3333100.00%

07.15.2014翠屏路昌南大道景观塔２34535298.01%

07.15.2014翠屏路昌南大道景观塔３1717100.00%

07.16.2014翠屏路昌南大道景观塔１444597.78%

07.16.2014翠屏路昌南大道景观塔２40040698.52%

07.16.2014翠屏路昌南大道景观塔３2424100.00%

切换常用优化方法(超远邻区核查)anrOmExtEnablefalseactUeBasedAnrUtranfalsedistNameadjEnbIdcPlaneIpAddrcPlaneIpAddrCtrlguGroupIdListplmnId509498_5508228100.82.1.94oamControlled4607050246002509498_6508202100.82.1.95oamControlled4607050246002distNameecgiAdjEnbIdecgiLcrIdfDlEarfcnphyCellIdsourceOfDataspcSubConfTDtactrmBwTDulDlConfTD509498_55082286137900489X2ssp727065100nrbsa2509498_55082285137900490X2ssp727065100nrbsa2distNamecellIndOffNeighecgiAdjEnbIdecgiLcrIdhandoverAllowed509498_480dB51003148allowed切换常用优化方法(基站校准问题)切换执行失败之同频同PCI核查现象：2个同频同PCI邻区中只有1个邻区可用，以LNADJ中的“Valid”字段标识，后加邻区为0不可用。切换常用优化方法(MRO过早过晚切换自动优化)切换成功率无线链路失败率

相关KPIs过早切换1跟随有RRC连接重建的失败的切换尝试过早切换2在完成切换至目标小区后,紧随发生的多种问题过晚切换由无线链路失败告终的失败的切换尝试•其他用户设置输入MRO修改取值•CellIndividualOffset(CIO)•Time-to-trigger(TTT)输出切换常用优化方法(过早过晚切换)切换常用优化方法(MRO过早过晚切换自动优化)MRO_LATE_HOMRO_early_type1_HOMRO_early_type2_HO切换常用优化方法(MRO过早过晚切换自动优化)时间Intra-LTEHOAttempts[N]EarlyHandoverType1[N]EarlyHandoverType2[N]LateHandover[N]EarlyHandoverType1EarlyHandoverType2LateHandover20140902922684.14254.35263.700.91%2.76%2.86%20140904117737.92146.96225.420.07%1.25%1.91%201409081078011.8848.13255.520.11%0.45%2.37%20140910991412.6340.42186.180.13%0.41%1.88%切换常用优化方法(异频切换top终端问题)本小区邻区切换差终端IMSIMSISDN型号地市备注517333_30518203_184600061207956448613979130860LenovoA788t南昌

510241_10510806_284600217929034158618270200881酷派8705九江

514531_41513780_304600227074883828618370891366LenovoA788t赣州

508202_41509495_48460006140719508未解出酷派8720L南昌

508476_41510133_48460022791322865未解出海信HS-E600M南昌

516063_18515851_104600287987743318615180083989LenovoA788t鹰潭

510824_41510361_20460021792817491未解出OPPOX9007九江

516075_38782296_304600070118699468613907014067酷派8720L鹰潭

516025_28515893_104600287991701198613707015292酷派8720L鹰潭

514544_61513583_104600227972344018618879755013ZTEQ505T赣州

514544_62513583_114600227075037778618370723372酷派8702赣州

514544_63513583_124600227078002888618370702735ZTEQ505T赣州

514544_64513583_134600227078043848618370729195华为G620赣州

514544_65513583_144600066807789928613617079208ShenzhenOnePlusONEA0001赣州

516025_28515893_104600287987700548613907014416酷派8720L鹰潭移动员工516025_28515893_10460028799170119

酷派8720L鹰潭移动员工王来旺线路班副班长切换常用优化方法(异频切换top终端问题)TRACEID终端类型业务类型UEFGI4、6苹果5CCSFB0x7E0DF88223、28、30苹果5SCSFB0x7E0DF88255、60、64索尼CSFB0x7E0DD88070、73、74、77、79、81E5776上网0x440D188095、96、98D2CSFB0xFFCFDE84129、130、131、132、133苹果5S上网0x7E0DF882华为D2

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切换常用优化方法(异频切换top终端问题)终端厂商型号CP型号CP供应商CP主频AP型号AP供应商宇龙Coolpad870588CP1L88A0-BSH2C000-P161Marvell624MHz88CP1L88A0-BSH2C000-P161Marvell联想LenovoA788tPXA1920Marvell624MHzPXA1920Marvell宇龙Coolpad8720LMarvell

1920MarvellN

Marvell

1920Marvell海信HS-E600MPXA1920Marvell1.2GHzPXA1920Marvell欧珀OppoX9007MSM8974ABm2.26GHzMSM8974ABm联想A788t无法切换是个体终端问题,其它联想A788t刷了相同的芯片软件版本和操作系统版本没有此问题,此款有问题终端不管哪个版本都不行.

具休结果为:那个出问题终端无法在D和E网络下驻留,只能在F下驻留,因此才会出现现网的异频切换只影响F--->D和F--->E的单向切换.

这也可以证明,此款终端如果出现在福建,它根本不可能驻留网络,因为福建前期基本没有F,只有大量D和少数E,而D和E它都不能使用.

具体原因为:收集底层log,发现终端在开机是,前面MIB/SIB,x等,PCI等均解析完成,MAC层发起随机接入,选择的preambleIndex=0xff,此preamble是不存在的,只能RA肯定失败,导致注册失败.

在切换时,网络侧给UE分配preamble,但我怀疑此终端在随机接入时计算preamble算法存在问题,因此切换时产生此preamble序列肯定也应该存在问题,那切换时RA肯定失败,也就是eNodeB一直收不到UE的RA消息.下行无线链路同步失步检测机制UE在一定的周期内检测与PDCCH和PCFICH相关关的bler，若bler大于10%则认为一次失步指示，若bler小于2%，则认为一次同步指示

T300UEeNodeBRRCConnectionRequestRRCConnectionSetupRRCConnectionSetupComplete上行无线链路同步失步检测机制:RLF_CQIDTX基于上行调度数据的PUSCHDTX检测基于上行周期性CQI上报的检测(PUCCH/PUSCH)上行反馈的Ack/Nack的DTX检测,当然还可基于SRS等检测Nokia的上行失步同步检测机制timeCQIDTXPeriodicCQIdetected

<pname="nCqiDtx">6</p>

<pname="nCqiRec">1</p>vendor-fileparametersinthisexample:CQI_RLFONCQI_RLFOFFRLFtimerrunningPeriodicCQIdetectedLNCEL/cqiPerNp=10msCQIDTXCQIDTXCQIDTXCQIDTXCQIDTXCQIDTXCQIDTXP