TD-LTE网络性能KPI(切换成功率)优化手册

1、TD-LTE网络性能KPI （切换成功率）优化手册1 切换成功率定义说明1.1 指标公式指标名称集团规范公式NSN映射公式切换成功率（eNB间S1切换出成功次数 + eNB间 X2切换出成功次数 + eNB内切换出成 功次数）/ （eNB间S1切换出请求次 数+ eNB间X2切换出请求次数 + eNB 内切换出请求次数）*100%100* sum(M8009c7 + M8014C7 +M8014c19) / sum(M8009c6 + M8014C0+ M8014C14)1.2 COUNTER定义1.2.1 集团规范定义1、eNB间S1切换出请求次数：源eNB向MME发送的“切换请求”消息（

2、HANDOVER REQUIRED （3GPP TS ）,指示 eNB间通过S1接口的切换出准备请求。向不同小区发送的同一切换准备请求，需要重复统 计。2、eNB间S1切换出成功次数：源eNB收到 MME发送的“UE上下文释放命令” 消息（UE CONTEXT RELEASE COMMAND （3GPP TS ）,指示eNB间通过S1接口的切换出执行成功。3、eNB间X2切换出请求次数：源eNB向目标eNB发送的“切换请求”消息（HANDOVER REQUE0T（3GPP TS ）,指示 eNB间通过X2接口的切换出准备请求。向不同小区发送的同一切换准备请求，重复统计。4、eNB间X2切换出成

3、功次数：源eNB收至IJ目标eNB发送的“UE上下文释放"消息（UE CONTEXT RELEA S E3GPP TS ）, 指示eNB间通过X2接口的切换出执行成功。5、eNB内切换出请求次数：eNB向 UE发送携带 mobilityControlInfo 的“ RRC连接重配置”消息 （RRCConnectionReconfiguration）,指示 eNB 内小区间切换出请求。（3GPP TS ）6、eNB内切换出成功次数：eNB 收到 UE 发送的 “ RRC连接重配置完成”消息(RRCConnectionReconfigurationComplete ),指示 eNB 内小

4、区间切换出成功。(3GPP TS )1.2.2 NSN 映射1、eNB间S1切换出请求次数：M8014c14： INTER_ENB_S1_HO_PREP The number of Inter eNB S1-based Handover preparations ;2、eNB间S1切换出成功次数：M8014c19: INTER_ENB_S1_HO_SUCCThe number of successful Inter eNB S1-based Handover completions ;3、eNB间X2切换出请求次数：M8014C0 : INTER_ENB_HO_PREP The number

5、of Inter-eNB X2-based Handover preparations. The Mobility management (MM) receives a list with target cells from the RRM and decides to start an Inter-eNB X2-based Handover ;4、eNB间X2切换出成功次数：M8014C7: SUCC_INTER_ENB_HOThe number of successful Inter-eNB X2-based Handover completions ；5、eNB内切换出请求次数：M800

6、9c6: ATT_INTRA_ENB_HQ The number of Intra-eNB Handover attempts ;6、eNB内切换出成功次数：M8009C7 : SUCC_INTRA_ENB_HQ The number of successful Intra-eNB Handover completions ;1.3 信令统计点1.3.1 eNB 间 S1 切换CounterCounter IDNetAct nameeNB间S1切换请求次数M8014C14INTER_ENB_S1_HO_PREPeNB间S1切换目标小区准备 失败次数M8014C15INTER_S1_HO_PRE

7、P_FAIL_TIMEM8014C16INTER_S1_HO_PREP_FAIL_NORRM8014C17INTER_S1_HO_PREP_FAIL_OTHEReNB间S1切换尝试次数M8014C18INTER_ENB_S1_HO_ATTeNB间S1切换成功次数M8014C19INTER_ENB_S1_HO_SUCCeNB间S1切换失败次数M8014C20INTER_ENB_S1_HO_FAIL统计点关系： M8014C14 = M8014C15 + M8014C16 + M8014C17 + M8014C18M8014c18 = M8014c19 + M8014c20 （注：现网实际数据对不

8、上）1、M8014C14: INTER_ENB_S1_HO_PREPUpdated: This counter is updated following the transmission of an S1AP:HANDOVER REQUIREDmessage from the source eNB to the MME if this message prepares an Inter eNB Handover.2、M8014c15: INTER_S1_HO_PREP_FAIL_TIMEUpdated: This counter is updated at the expiry of the

9、guarding timer TS1RELOCprepf the timer was started because of the preparation of an Inter eNB Handover.3、M8014C16: INTER_S1_HO_PREP_FAIL_NORRUpdated: This counter is updated following the reception of an S1AP: HANDOVER PREPARATION FAILUREessage from MME to source eNB with cause "No Radio Resour

10、ces Available in Target Cell" if this message is received in response to the preparation of an Inter eNB Handover.4、M8014C17: INTERS1HOPREPFAILOTHERUpdated: The number of failed Inter eNB S1-based Handover preparations due to thereception of an S1AP: HANDOVER PREPARATION FAILUREssage with a cau

11、se other than "NoRadio Resources Available in Target Cell."Kei Drimsg号:IJ中r A番ITM9014C15： Filled intersi ho- pr« piratic nt du« totimtr 二 #gTStRELOCppj- ERCB rhSR -f re 二,尢入上jm叮SBftnng GW亡o二INTFR=rNR_-SlLHCi-tPRFPMS014C1S： Fiitd unttr«Nod：tB S1 no pr*parations du，to target t

12、NodiB admlsiion cantrolMB014C17： Failed linter S1 HQ prtia ratio nsto other reaion5、M8014C18: INTER_ENB_S1_HO_ATTUpdated: This counter is updated following the reception of an S1AP: HANDOVER COMMAND message from the MME to the source eNB in case that this message is received in response to the prepa

13、ration of an Inter eNB Handover.Key phases:IJFSourcewNDTargeteNBEPCSn/mgGW力ifHEREre Sl_H0_An，J!H Haiida4仁CDfitJQl* 目山 正1小1：311：日1|=：!121口；.1Hwar丽g Tunnel ResponseDn rvrr butfor(Kt 门nd in仃 nnqiT packK to birqteND11. Trigger HO decision毕_出邙普通萼电>；3ti MFJF SltuSTrarytTey f H'1(Indirectji MW lorwi

14、rdinqfflfYUrSkbuffer PhcRbIs fromSoucs gNB1d Svnct i：-ri14a UL allDCBiari + TA tor UE5. RNC GQioeEci i ReccfiT. Ccmu 史忸hllDUCIB: FMM mttr «Nad«B SI dua to timtr: tg TllRELOCovtoll6、M8014c19: INTER_ENB_S1_HO_SUCCUpdated: This counter is updated following the reception of an S1AP: UE CONTEXT

15、 RELEASE COMMAND message from the MME to the source eNB with the cause value Radio Network Layer (Successful Handover) in case that this message is received for an Inter eNB Handover.同 0H.E O打寸inHi i nmlojr 广门二亡Lp%lcX*i $2/MntTriJJEjty i匕叫 Ml M4iif 3 5片iTIUTBTarcei SNBMWF/ EPCSource dNB加rm GW工.Qwiey

16、 勺 MaFmitf4m l l -)ai sec.es7占Rn&6Fnfi Llwfei*-卜 4二二“兰h、,汨口四对3口叫 加单-bf"0,LIE 旦 d Eg04ch flHTrffli Si-J daisrrsDurzs7、M8014c20: INTER_ENB_S1_HO_FAILUpdated: This counter is updated following the expiry of the guarding timerTS1RELOCoveralin case that this timer was started because of an Inter

17、 eNB Handover.1.3.2 eNB 间 X2 切换CounterCounter IDNetAct nameeNB间X2切换请求次数M8014C0INTER_ENB_HO_PREPeNB间X2切换目标小区准备M8014C2FAIL_ENB_HO_PREP_TIME失败次数M8014C3FAIL_ENB_HO_PREP_ACM8014c5FAIL_ENB_HO_PREP_OTHEReNB间X2切换尝试次数M8014c6ATT_INTER_ENB_HOeNB间X2切换成功次数M8014C7SUCC_INTER_ENB_HOeNB间X2切换失败次数M8014C8INTER_ENB_HO_F

18、AILM8014C2/C3；C5M0O14C8M8014COM8014C6M8014C7HO preparationSucces导fuWail巳d Successful/falledattemptHO preparation HO execution统计点关系： M8014C0 = M8014c2 + M8014c3 + M8014c5 + M8014c6M8014c6 = M8014C7 + M8014C8 （注：现网实际数据对不上）1、M8014c0: INTER_ENB_HO_PREPUpdated: This counter is updated following the trans

19、mission of an X2AP: Handover Request to the target eNB.UESourea «NBTarget «NBMMENGWRRC Msasnrsment Contra!UL/DL Dflffl fsowfce oe阳«射L? VL Aifocatfon,MB014 Inter eNodeB Handover NeftsurennenUOn level of source cellRRC M«itur«rnwt Reports>Handcvtr d«ci3ianX2AP5 tAdm9ic

20、n control and resourfeM-Hjndovtr pr*pirjiionallocation on tarQ«ls_ MaOMCO *ttEp*d Inter eNodeBhjndwr pKpantionsX2AP Handover R«qu«s t A cknaTimtr TX2RELOCpnp （JiantfcotfetflSuperv年,3户H。*.2、M8014C2: FAIL_ENB_HO_PREP_TIMEUpdated: This counter is updated following the expiry of the guard

21、ing timer TX2RELOCprep 3、M8014c3: FAIL_ENB_HO_PREP_ACUpdated: This counter is updated following the reception of an X2AP: Handover Preparation Failure message from the target eNB.4、M8014c5: FAIL_ENB_HO_PREP_OTHERUpdated: The counter is updated if the failure detected does not match any other failure

22、 counter.RRC Veasufflment Reports >Handover decisionTargetUUDL Dera fsource ceWMMESGWX2AP Handover>Admisiiorii control and resourcesallocation on Urget cellX24P网Humar no5、M8014c6: ATTINTERENBHOFailed mttrmo prqMraucfiiidue to He" tflMB014C3; FaiMd im*rHOdme to urgel t NiodtB a dim i&s

23、i isn control MtOHCS: Faltod inttr 尊HO dmt to otnar rajssnuUpdated: This counter is updated following the reception of an X2AP: Handover Request Acknowledge message from the target eNB.Source bNBTarget «NBMMEX2APStatus TnnsferforwArdimRRC Conrrechom Reconfirguratjon Gomp/efe6、M8014c7 : SUCCINTE

24、RENBHOTrmier TX2REL OCaxac fh 青 rdcgdad)Supervj$方 erecwrfon phaseX2AP H注ndcgf Request Acknowledge *RRC Cqnng世mn口 ftgwTgHandover ex&cutJ-o-nMSQ0i4Ge att4 mptF inter haindov#r>ISGWUpdated: This counter is updated following the reception of an X2AP:Release Resource message sent by the target eNB

25、.Source eNERRCCorttR吉fwRRC Conntctian RaconftgurAtion (Miha. Recanfi j.JRRC Connection ffeconfiffwrfltjon CmptetvX2AF UE Context ReviseRelf ei?e source resourcesUUDL DtfffiTarget eNBMMEP#fft Switch RtqustPacJtef DatffSGWVser P/ene 0秤西处 ReqrnstUur 户f*nq Up0«抬 R«$ppnSffFath Switch Reque s t

26、Achno wledye=e pl耐 ionMSQQ14C7 succes&rui inttr 冏 handlav*r9(target ctil)7 m $“eu PWtKHkfa7、M8014c8: INTERENBHOFAILUpdated: This counter is updated following the expiry of the guarding timerTX2RELOCovera.lSou re# eNBRRC Ccnn«cticn Rttconftguration CompM&Target eNBMMESGWRRC Canntciion Re

27、configuration (Maas. R&config.1Path Switch RequestRRC Cortrt#ewon R&canfifjiimian Camp/»nUitrPJin* Updtn R*qMitEnd Mur“rFeckef Ddf4MS0014C8: Total intereNodeBHO failures due to timerTX2RELQCoverall expiresError ar no nspons#Error or no responseCounterCounter IDNetAct nameeNB内收到MR次数M8009

28、C0TOT_NOT_START_HO_PREPeNB内切换决断次数M8009C1TOT_HO_DECISIONeNB内切换请求次数M8009C2INTRA_ENB_HO_PREPeNB内切换准备失败次数M8009C3FAIL_ENB_HO_PREP_ACM8009C5FAIL_ENB_HO_PREP_OTHeNB内切换尝试次数M8009C6ATT_INTRA_ENB_HO1.3.3 eNB内切换eNB内切换成功次数M8009C7SUCC_INTRA_ENB_HOeNB内切换执行失败次数M8009C8ENB_INTRA_HO_FAILMQ009CQM80Q9C1M8009C2M80Q9C6M80

29、09C7MB009C3/C5口sitiv曰negative HO preparation Succe$srul/failed Successful HO HO dec博ion anemptHO preparation execution统计点关系：M8009C1 > M8014c2M8014c2 = M8014c3 + M8014c5 + M8014c6M8014c6 = M8014c7 + M8014c8 （注：现网实际数据对不上）1、M8009c0: TOTNOTSTARTHOPREPUpdated: The reception of an RRc Measurement Repor

30、t message sent by the UE to eNB and of the RRM decision not to execute a handover. Updated to the source cell.ULBLOm （RRC 'Ataaurtmtm ReportsM80。9coMm»co updated if tfi* HO decision ic not to HO atthi» time when mea5uremerrt repo ri ha， tjetn MEivp。wm UESourc« eNBRffC MeastrrejTre

31、nr Cor Uro/Handover decbicr MMETotal not startedl HO preparationsSGW2、M8009C1: TOT_HO_DECISIONUpdated: The reception of an RRC Measurement Report message sent by the UE to eNB and of an RRM decision to execute a handover. Updated to the source cell.3、M8009c2: INTRA_ENB_HO_PREPUpdated: An internal eN

32、B trigger. The eNB MM receives a list with the target cells fromRRM and decides on an Intra-eNB Handover. Updated to the source cell.4、M8009c6: ATT_INTRA_ENB_HOUpdated: The transmission of an RRC Connection Reconfiguration message sent by the eNB to UE, which indicates a Handover Command to the UE.

33、Updated to the source cell.5、M8009C7: SUCC_INTRA_ENB_HOUpdated: The reception of an internal UE Context Release Request for the handover on the source side. Updated to the source cell.8GWMME? UL AlfoationM3009 Intra qNMbB 卜andover M?asurenn&ntsOn level of sourceRRCAUL DL Data (targvt cvtl'lH

34、mnd 口he:decisi-onTotal hardover decisifHisHahd&vtr tdmplWCiri IM BOO 9C 7irntra tNdvBHandover Exu也。nim euc g c e /4mm pttd in廿廿nariepwtrsr-rjL .M4M 1MN孑。井OlHSource eNBRRC叮gur.Hcm/融卜咏3用词加小加打力中UL DL D&ta (source 匚国，L N心亡M2nHanacvtr prtpjratld31 BQ09Ca Antmptvd tKTihndoutr ar|btnil4iuRelease Bo

35、iuirce reaaurceBAdmission cnirol find r»curce q I location 9n target wllfka 4口 *sHandover decisionRRC cortnsewon RecontiguratianRRC Cortfiectjon R+g” /9ur削汨n CairtpMe6、M8009C3: FAIL_ENB_HO_PREP_ACUpdated: An internal eNB trigger. The eNB MM receives a list with the target cells from the RRM. Th

36、e MM or RRM AC decides not to execute an Intra-eNB Handover. Updated to the source cell.7、M8009C5: FAIL_ENB_HO_PREP_OTHUpdated: An internal eNB trigger. The eNB MM receives a list with the target cells from RRM. The MM or RRM AC decides not to execute an Intra-eNB Handover. The counter is updated if

37、 the failure detected does not match any other failure counter. Updated to the source cell.MMESGWSource B8、M8009c8: ENB_INTRA_HO_FAILUpdated: The counter is updated to the source cell when timer THOoverall expires.2 影响切换成功率的因素2.1 从信令流程角度分析（注：个别流程可以会有不同，但大致相当，此处仅以X2切换为例。eNB内切换流程更少,eNB间S1切换仅多了有线侧的信令，如

38、果丢失均属于传输侧问题） 2.1.1切换判决阶段（注：此阶段不会影响后台统计切换成功率指标）1）现象：eNB未收到测量报告覆盖、干扰等无线环境问题因PDCCH问题导致UE上发测量报告的 UL GRANT没有收至IJ;因PUSCH问题导致eNB未收到或收到CRC校验出错）UE内部处理问题2）现象：eNB未发送切换请求参数问题：如触发事件门限过晚等，未及时触发测量报告邻区漏配黑名单2.1.2 切换准备阶段1）现象：切换请求发出，对方未收到传输丢包2）现象：目标小区拒绝目标小区准入控制、容量问题3）现象：目标小区回准备失败已知的有 unknown-MME-Code其余的需要跟着LOG确定具体原因值4

39、）现象：TX2RELOCprept备超时目标小区故障、告警目标小区休眠2.1.3 切换执行阶段1）现象：切换命令（RRC连接重配）丢失覆盖、干扰等无线环境问题UE下行PDCCH解析失败，下行PDCCH受限UE下行PDSCH解析失败，下行PDSCH受限2）现象：切换完成信令（RRC连接重配完成）丢失覆盖、干扰等无线环境问题UE在目标小区的 PREAMBLE eNB没有收到，上行 PRACH受限UE下行接收RAR失败，下行PDSCH限UE上发切换完成，eNB没有收到，上行 PUSCH受限3）现象：在非真正的目标小区接入失败PCI混淆4）现象：目标小区非最优小区邻区混乱、漏配5）现象：源 eNB 发起 Handover Cancel覆盖、干扰等无