TD-LTE網(wǎng)絡(luò)性能KPI(切換成功率)優(yōu)化介紹材料

,.TD-LTE網(wǎng)絡(luò)性能KPI（切換成功率）優(yōu)化手冊1 切換成功率定義說明1.1 指標(biāo)公式指標(biāo)名稱 集團(tuán)規(guī)范公式 NSN映射公式（eNB間S1切換出成功次數(shù)+eNB間X2切換出成功次數(shù)+eNB內(nèi)切換出成 100*sum(M8009C7+M8014C7+精品文檔放心下載切換成功率 功次數(shù)）/（eNB間S1切換出請求次 M8014C19)/sum(M8009C6+M8014C0+謝謝閱讀數(shù)+eNB間X2切換出請求次數(shù)+eNB M8014C14)精品文檔放心下載內(nèi)切換出請求次數(shù)）*100%1.2 COUNTER定義1.2.1 集團(tuán)規(guī)范定義1、eNB間S1切換出請求次數(shù)：eNB向MME發(fā)送的“切換請求”消息（HANDOVERREQUIRED）（3GPPTS36.413），指感謝閱讀eNB間通過S1接口的切換出準(zhǔn)備請求。向不同小區(qū)發(fā)送的同一切換準(zhǔn)備請求，需要重復(fù)統(tǒng)計。感謝閱讀2、eNB間S1切換出成功次數(shù)：eNB收到MME發(fā)送的“UE上下文釋放命令”消息（UECONTEXTRELEASECOMMAND）（3GPPTS36.413），指示eNB間通過S1接口的切換出執(zhí)行成功。感謝閱讀3、eNB間X2切換出請求次數(shù)：eNB向目標(biāo)eNB發(fā)送的“切換請求”消息（HANDOVERREQUEST）（3GPPTS36.423），指示eNB間通過X2接口的切換出準(zhǔn)備請求。向不同小區(qū)發(fā)送的同一切換準(zhǔn)備請求，重復(fù)統(tǒng)計。感謝閱讀4、eNB間X2切換出成功次數(shù)：eNB收到目標(biāo)eNB發(fā)送的“UE上下文釋放”消息（UECONTEXTRELEASE）（3GPPTS36.423），指示eNB間通過X2接口的切換出執(zhí)行成功。感謝閱讀5、eNB內(nèi)切換出請求次數(shù)：eNB向UE發(fā)送攜帶mobilityControlInfo的“RRC連接重配置”消息（RRCConnectionReconfiguration），指示eNB內(nèi)小區(qū)間切換出請求。（3GPPTS36.331）感謝閱讀6、eNB內(nèi)切換出成功次數(shù)：,.eNB收到UE發(fā)送的“RRC連接重配置完成”消息（RRCConnectionReconfigurationComplete），指示eNB內(nèi)小區(qū)間切換出成功。（3GPPTS36.331）感謝閱讀1.2.2 NSN映射1、eNB間S1切換出請求次數(shù)：M8014C14：INTER_ENB_S1_HO_PREP，ThenumberofIntereNBS1-basedHandoverpreparations；精品文檔放心下載2、eNB間S1切換出成功次數(shù)：M8014C19：INTER_ENB_S1_HO_SUCC，ThenumberofsuccessfulIntereNBS1-basedHandovercompletions；感謝閱讀3、eNB間X2切換出請求次數(shù)：M8014C0：INTER_ENB_HO_PREP，ThenumberofInter-eNBX2-basedHandoverpreparations.TheMobilitymanagement(MM)receivesalistwithtargetcellsfromtheRRManddecidestostartanInter-eNBX2-basedHandover；感謝閱讀4、eNB間X2切換出成功次數(shù)：M8014C7：SUCC_INTER_ENB_HO，ThenumberofsuccessfulInter-eNBX2-basedHandovercompletions；謝謝閱讀5、eNB內(nèi)切換出請求次數(shù)：M8009C6：ATT_INTRA_ENB_HO，ThenumberofIntra-eNBHandoverattempts；謝謝閱讀6、eNB內(nèi)切換出成功次數(shù)：M8009C7：SUCC_INTRA_ENB_HO，Thecompletions；感謝閱讀1.3 信令統(tǒng)計點1.3.1 eNB間S1切換CounterCounterIDeNB間S1切換請求次數(shù)M8014C14eNB間S1切換目標(biāo)小區(qū)準(zhǔn)備M8014C15M8014C16失敗次數(shù)M8014C17eNB間S1切換嘗試次數(shù)M8014C18eNB間S1切換成功次數(shù)M8014C19eNB間S1切換失敗次數(shù)M8014C20

numberofsuccessfulIntra-eNBHandover精品文檔放心下載NetActnameINTER_ENB_S1_HO_PREPINTER_S1_HO_PREP_FAIL_TIME謝謝閱讀INTER_S1_HO_PREP_FAIL_NORR感謝閱讀INTER_S1_HO_PREP_FAIL_OTHER精品文檔放心下載INTER_ENB_S1_HO_ATTINTER_ENB_S1_HO_SUCCINTER_ENB_S1_HO_FAIL,.統(tǒng)計點關(guān)系：M8014C14=M8014C15+M8014C16+M8014C17+M8014C18M8014C18=M8014C19+M8014C20（注：現(xiàn)網(wǎng)實際數(shù)據(jù)對不上）感謝閱讀1、M8014C14：INTER_ENB_S1_HO_PREP精品文檔放心下載Updated:ThiscounterisupdatedfollowingthetransmissionofanS1AP:HANDOVERREQUIREDmessagefromthesourceeNBtotheMMEifthismessagepreparesanIntereNBHandover.感謝閱讀2、M8014C15：INTER_S1_HO_PREP_FAIL_TIME感謝閱讀Updated:ThiscounterisupdatedattheexpiryoftheguardingtimerTS1RELOCprepifthetimerwasstartedbecauseofthepreparationofanIntereNBHandover.感謝閱讀3、M8014C16：INTER_S1_HO_PREP_FAIL_NORR感謝閱讀Updated:ThiscounterisupdatedfollowingthereceptionofanS1AP:HANDOVERPREPARATIONFAILUREmessagefromMMEtosourceeNBwithcause"NoRadioResourcesAvailableinTargetCell"ifthismessageisreceivedinresponsetothepreparationofanIntereNBHandover.謝謝閱讀4、M8014C17：INTER_S1_HO_PREP_FAIL_OTHER謝謝閱讀Updated:ThenumberoffailedIntereNBS1-basedHandoverpreparationsduetothereceptionofanS1AP:HANDOVERPREPARATIONFAILUREmessagewithacauseotherthan"NoRadioResourcesAvailableinTargetCell."精品文檔放心下載5、M8014C18：INTER_ENB_S1_HO_ATT感謝閱讀Updated:ThiscounterisupdatedfollowingthereceptionofanS1AP:HANDOVERCOMMANDmessagefromtheMMEtothesourceeNBincasethatthismessageisreceivedinresponsetothepreparationofanIntereNBHandover.感謝閱讀,.6、M8014C19：INTER_ENB_S1_HO_SUCC感謝閱讀Updated:ThiscounterisupdatedfollowingthereceptionofanS1AP:UECONTEXTRELEASECOMMANDmessagefromtheMMEtothesourceeNBwiththecausevalueRadioNetworkLayer(SuccessfulHandover)incasethatthismessageisreceivedforanIntereNBHandover.謝謝閱讀7、M8014C20：INTER_ENB_S1_HO_FAIL精品文檔放心下載Updated:ThiscounterisupdatedfollowingtheexpiryoftheguardingtimerTS1RELOCoverallincasethatthistimerwasstartedbecauseofanIntereNBHandover.謝謝閱讀1.3.2 eNB間X2切換CounterCounterIDNetActnameeNB間X2切換請求次數(shù)M8014C0INTER_ENB_HO_PREPeNB間X2切換目標(biāo)小區(qū)準(zhǔn)備M8014C2FAIL_ENB_HO_PREP_TIME,.失敗次數(shù)M8014C3FAIL_ENB_HO_PREP_ACM8014C5FAIL_ENB_HO_PREP_OTHEReNB間X2切換嘗試次數(shù)M8014C6ATT_INTER_ENB_HOeNB間X2切換成功次數(shù)M8014C7SUCC_INTER_ENB_HOeNB間X2切換失敗次數(shù)M8014C8INTER_ENB_HO_FAIL統(tǒng)計點關(guān)系：M8014C0=M8014C2+M8014C3+M8014C5+M8014C6M8014C6=M8014C7+M8014C8（注：現(xiàn)網(wǎng)實際數(shù)據(jù)對不上）謝謝閱讀1、M8014C0：INTER_ENB_HO_PREP謝謝閱讀Updated:ThiscounterisupdatedfollowingthetransmissionofanX2AP:HandoverRequesttothetargeteNB.謝謝閱讀,.2、M8014C2：FAIL_ENB_HO_PREP_TIME感謝閱讀Updated:ThiscounterisupdatedfollowingtheexpiryoftheguardingtimerTX2RELOCprep.感謝閱讀3、M8014C3：FAIL_ENB_HO_PREP_AC精品文檔放心下載Updated:ThiscounterisupdatedfollowingthereceptionofanX2AP:HandoverPreparationFailuremessagefromthetargeteNB.精品文檔放心下載4、M8014C5：FAIL_ENB_HO_PREP_OTHER謝謝閱讀Updated:Thecounterisupdatedifthefailuredetecteddoesnotmatchanyotherfailurecounter.精品文檔放心下載5、M8014C6：ATT_INTER_ENB_HO謝謝閱讀Updated:ThiscounterisupdatedfollowingthereceptionofanX2AP:HandoverRequestAcknowledgemessagefromthetargeteNB.精品文檔放心下載6、M8014C7：SUCC_INTER_ENB_HO精品文檔放心下載Updated:ThiscounterisupdatedfollowingthereceptionofanX2AP:Release精品文檔放心下載,.ResourcemessagesentbythetargeteNB.精品文檔放心下載7、M8014C8：INTER_ENB_HO_FAIL感謝閱讀Updated:ThiscounterisupdatedfollowingtheexpiryoftheguardingtimerTX2RELOCoverall.感謝閱讀1.3.3 eNB內(nèi)切換CounterCounterIDNetActnameeNB內(nèi)收到MR次數(shù)M8009C0TOT_NOT_START_HO_PREPeNB內(nèi)切換決斷次數(shù)M8009C1TOT_HO_DECISIONeNB內(nèi)切換請求次數(shù)M8009C2INTRA_ENB_HO_PREPeNB內(nèi)切換準(zhǔn)備失敗次數(shù)M8009C3FAIL_ENB_HO_PREP_AC,.M8009C5FAIL_ENB_HO_PREP_OTHeNB內(nèi)切換嘗試次數(shù)M8009C6ATT_INTRA_ENB_HOeNB內(nèi)切換成功次數(shù)M8009C7SUCC_INTRA_ENB_HOeNB內(nèi)切換執(zhí)行失敗次數(shù)M8009C8ENB_INTRA_HO_FAIL統(tǒng)計點關(guān)系：M8009C1>M8014C2M8014C2=M8014C3+M8014C5+M8014C6精品文檔放心下載M8014C6=M8014C7+M8014C8（注：現(xiàn)網(wǎng)實際數(shù)據(jù)對不上）謝謝閱讀1、M8009C0:TOT_NOT_START_HO_PREP感謝閱讀Updated:ThereceptionofanRRCMeasurementReportmessagesentbytheUEtoeNBandoftheRRMdecisionnottoexecuteahandover.Updatedtothesourcecell.感謝閱讀2、M8009C1:TOT_HO_DECISION精品文檔放心下載Updated:ThereceptionofanRRCMeasurementReportmessagesentbytheUEtoeNBandofanRRMdecisiontoexecuteahandover.Updatedtothesourcecell.謝謝閱讀,.3、M8009C2:INTRA_ENB_HO_PREP感謝閱讀Updated:AninternaleNBtrigger.TheeNBMMreceivesalistwiththetargetcellsfromRRManddecidesonanIntra-eNBHandover.Updatedtothesourcecell.感謝閱讀4、M8009C6:ATT_INTRA_ENB_HO謝謝閱讀Updated:ThetransmissionofanRRCConnectionReconfigurationmessagesentbytheeNBtoUE,whichindicatesaHandoverCommandtotheUE.Updatedtothesourcecell.精品文檔放心下載5、M8009C7:SUCC_INTRA_ENB_HO感謝閱讀Updated:ThereceptionofaninternalUEContextReleaseRequestforthehandoveronthesourceside.Updatedtothesourcecell.精品文檔放心下載6、M8009C3:FAIL_ENB_HO_PREP_AC精品文檔放心下載Updated:AninternaleNBtrigger.TheeNBMMreceivesalistwiththetargetcellsfromtheRRM.TheMMorRRMACdecidesnottoexecuteanIntra-eNBHandover.Updatedtothesourcecell.感謝閱讀7、M8009C5:FAIL_ENB_HO_PREP_OTH謝謝閱讀Updated:AninternaleNBtrigger.TheeNBMMreceivesalistwiththetargetcellsfromRRM.TheMMorRRMACdecidesnottoexecuteanIntra-eNBHandover.Thecounterisupdatedifthefailuredetecteddoesnotmatchanyotherfailurecounter.Updatedtothesourcecell.精品文檔放心下載,.8、M8009C8:ENB_INTRA_HO_FAIL精品文檔放心下載Updated:ThecounterisupdatedtothesourcecellwhentimerTHOoverallexpires.感謝閱讀2 影響切換成功率的因素2.1 從信令流程角度分析（注：個別流程可以會有不同，但大致相當(dāng)，此處僅以X2切換為例。eNB內(nèi)切換流程更少，eNB間S1切換僅多了有線側(cè)的信令，如果丟失均屬于傳輸側(cè)問題）感謝閱讀2.1.1 切換判決階段（注：此階段不會影響后臺統(tǒng)計切換成功率指標(biāo)）1）現(xiàn)象：eNB未收到測量報告覆蓋、干擾等無線環(huán)境問題,.因PDCCH問題導(dǎo)致UE上發(fā)測量報告的ULGRANT沒有收到；因PUSCH問題導(dǎo)致eNB未收到或收到CRC校驗出錯）精品文檔放心下載? UE內(nèi)部處理問題2）現(xiàn)象：eNB未發(fā)送切換請求? 參數(shù)問題：如觸發(fā)事件門限過晚等，未及時觸發(fā)測量報告謝謝閱讀? 鄰區(qū)漏配? 黑名單2.1.2 切換準(zhǔn)備階段1）現(xiàn)象：切換請求發(fā)出，對方未收到? 傳輸丟包2）現(xiàn)象：目標(biāo)小區(qū)拒絕? 目標(biāo)小區(qū)準(zhǔn)入控制、容量問題3）現(xiàn)象：目標(biāo)小區(qū)回準(zhǔn)備失敗? 已知的有unknown-MME-Code? 其余的需要跟著LOG確定具體原因值4）現(xiàn)象：TX2RELOCprep準(zhǔn)備超時? 目標(biāo)小區(qū)故障、告警? 目標(biāo)小區(qū)休眠2.1.3 切換執(zhí)行階段1）現(xiàn)象：切換命令（RRC連接重配）丟失? 覆蓋、干擾等無線環(huán)境問題UE下行PDCCH解析失敗，下行PDCCH受限精品文檔放心下載UE下行PDSCH解析失敗，下行PDSCH受限謝謝閱讀2）現(xiàn)象：切換完成信令（RRC連接重配完成）丟失? 覆蓋、干擾等無線環(huán)境問題UE在目標(biāo)小區(qū)的PREAMBLE，eNB沒有收到，上行PRACH受限UE下行接收RAR失敗，下行PDSCH受限感謝閱讀UE上發(fā)切換完成，eNB沒有收到，上行PUSCH受限感謝閱讀3）現(xiàn)象：在非真正的目標(biāo)小區(qū)接入失敗? PCI混淆4）現(xiàn)象：目標(biāo)小區(qū)非最優(yōu)小區(qū)? 鄰區(qū)混亂、漏配5）現(xiàn)象：源eNB發(fā)起HandoverCancel精品文檔放心下載? 覆蓋、干擾