TD-LTE网络性能KPI(切换成功率)优化介绍材料

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切换岀成功次数 + eNB间 X2切换岀成功次数 + eNB内切换岀成 功次数)/ (eNB间S1切换岀请求次 数+ eNB间X2切换岀请求次数+ eNB 内切换岀请求次数)*100%100* sum(M8009C7 + M8014C7 +M8014C19) / sum(M8009C6 + M8014C0 +M8014C14)1.2 COUNTE定X1.2.1 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( HAND

2、OVER REQUIRED3GPP TS 36.413 ),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(UECONTEXRELEASEOMMAND3GPPTS 36.413)，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 REQUEST3GPP TS 36.423 ), 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X

3、2切换出成功次数:源eNB收到目标eNB发送的“ UE上下文释放”消息(UE CONTEXT RELEASE( 3GPP TS36.423)，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:的“ RRC连接重配置”消息eNB 向 UE 发送携带 mobilityControllnfo(RRCConnectionReconfiguration),指示 eNB内小区间切换出请求。(3GPP TS 36.331 )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

4、 eNB 内小区间切换出成功。(3GPP TS36.331 )1.2.2NSN映射1、eNB间S1切换出请求次数:M8014C14： INTER_ENB_S1_H0_ PREFThe number of In ter eNB S1-based Ha ndoverprep aratio ns2、eNB间S1切换出成功次数:M8014C19 INTER_ENB_S1_HO_SU,(The number of successful In ter eNB S1-basedHan dover compi eti ons3、eNB间X2切换出请求次数:M8014C0: INTER_ENB_HO_PREP

5、The number of Inter-eNB X2-basedHandoverprep aratio ns. The Mobility man ageme nt (MM) receives a list with target cells fromthe RRM and decides to start an In ter-eNB X2-based Han dover4、eNB间X2切换出成功次数:M8014C7SUCC_INTER_ENB_l，0he number of successful Inter-eNB X2-basedHandovercompietions ;5、eNB内切换出请

6、求次数:M8009C6 ATT_INTRA_ENB_HOThe number of Intra-eNB Handover attempts6、eNB内切换出成功次数:M8009C7: SUCC_INTRA_ENB_HOThe number of successfulIntra-eNBHandovercompietions ;1.3 信令统计点Coun terCou nter IDNetAct n ameeNB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 PREP F AIL TIMEM8

7、014C16INTER S1 HO PREP FAI L NORRM8014C17INTER S1 HO PREP F AIL 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 FAIL1.3.1 eNB间 S1 切换（注：现网实际数据对不上）统计点关系： M8014C14 = M8014C15 + M8014C16 + M8014C17 + M8014C18M8014C18 = M8014C19 + M8

8、014C201、M8014C14: INTER_ENB_S1_HO_PREPUp dated: This cou nter is up dated followi ng the tran smissio n of an S1A P: HANDOVERREQUIREDmessage from the source eNB to the MME if this message prep ares an In ter eNB Han dover.2、M8014C15 INTER_S1_HO_PREP_FAIL_TIMEUp dated: This coun ter is up dated at th

9、e expiry of the guard ing timer TS1RELOC prep if the timer was started because of the prep arati on of an In ter eNB Han dover.3、M8014C16 INTER_S1_HO_PREP_FAIL_NORRS1A P: HANDOVERUp dated: This coun ter is up dated follow ing the recep ti on of anPREP ARATION FAILUREessage from MME to source eNB wit

10、h cause "No Radio Resources Available in Target Cell" if this message is received in response to the preparation of an In ter eNB Han dover.4、M8014C17: INTER_S1_HO_PREP_FAIL_OTHERUp dated: The nu mber of failed In ter eNB S1-based Han dover prep arati ons due tothe recep tion of anS1A P: H

11、ANDOVER PREP ARATION FAILUREssage with a cause othertha n "No Radio Resources Available in Target Cell."S'OLTSMBD14C15： Falltd lnt*r «Nod»B SI HD pr»p:)raCloni du« totmtr: «g TSiFtELOCpnpHETrgaft iUQ逼mcjdMW&EMIMM14C14: IHTTFEJWn&IJHn-PftFFMBD14C1SZ Fdll

12、tcl lnt«r*NodtB 31 MO prtparatloit du« to lg«t tNodtB admission controlWtLamrEIMBD14C17： Falltd lnt*r*NodtB S1 no preparations dut to otri*r rtasonS1A P: HANDOVER5、M8014C1a INTER_ENB_S1_HO_ATTUp dated: This coun ter is up dated follow ing the recep ti on of anCOMMANDessage from the MM

13、So the source eNB in case that this message is received in response to the prep arati on of an In ter eNB Han dover.UFSource endTarget eNDMhl 匚'LPServing GWKey phases:CiRatp IrrlirscJ D才!illfofWcWiJng Tiinntll ResfjpfiM-：C：>nrfljflWUCie； nTBRitNB.i 1 _I1O_ATT |11” Trigger HO decisionDriver bu

14、ffered eixJ in ' j 口如汕piK忱比lottug昭 eNB J皿强口牌la 9爾垃帕料FTrnrKffi-1* I町鴉虫型警枫II, . . . i4qiK程叮aciSaT込型丄Buffer PEickyls riornStiurce eNb14a ULsllDca咻in + TAbKUEf115. RRC CODne口ICA RewjiL ComeFjiIkJ mtftr 4Nod<aB a 1 du« to tirntr;料 TSIllRELOCovtrjilll6、M8014C19 INTER_ENB_S1_HO_SUCCUp dated: Th

15、is cou nter is up dated followi ngthe recep tionof an S1A P: UE CONTEXTRELEASE COMMAmessage from the MME to the source eNB with the cause value RadioNetwork Layer (Successful Han dover) in case that this message is received for anIn ter eNB Han dover.Source dNBTar開 isNBL'HE/ EPCServineG.；A/rP Hi

16、e f :尽 iFilgjnFr 0r:pbX七A:：3taLn日甘：Ra令jflfl. W空如TfT"r LF.-fi zlwrr-.uo 宣 dE8finsiixi 'rach "51-11 da1bhl竟1*1弘IWrPJ HE! S1_HD>I 1'A'& aEdlllm 华 “BP2号怎 »'l Us -flwjrtts ：4iu*i HTri tefvr口 MOMit lf<i 巾亡 D4U二.Z*甲Mire 单二 ZifflUIF*口 壬牛 J - Qi氓卅阿二Il忙叭prrs&ircM*卫

17、D dcsftnT*-Dre>-ir7、M8O14C20 INTER_ENB_S1_HO_FAILUp dated: This coun ter is up dated follow ing the expiry of the guard ing timerTS1RELOCoverall in case that this timer was started because of an In ter eNB Han dover.Coun terCou nter IDNetAct n ameeNB间X2切换请求次数M8014C0INTER ENB HO PREPeNB间X2切换目标小区准备

18、M8014C2FAIL_ENB_HO _P REP_TIMEeNB间X2切换1.3.2失败次数M8014C3FAIL_ENB_HO _P REP_ACM8014C5FAIL_ENB_HO _P REP_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_FAILM8014C2/C3/C5SSiM3014COM8014C6MI8014C7HO preparation Successful/falled Successtul/falle

19、d attemptHO 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_PREPUp dated: This coun ter is up dated follow ingthe tran smissi onof an X2A P: Han doverRequest to the target eNB.jjLIESource eNBflffC Meaauremen

20、t Co/ftrof<f-Target eNBMMESGWRflC WMiuremeflt ReportsHandover dKtslonM0O14 Irttor vN0d«6 Handover MflacuremeHU On Icrval erf £Ourc*' caJIJfJAP HfffKiQvvr R&quesr > =Admlftfikon control and flIlocfltiQn Qn Urgvt ctllX2AP Handover酣F 昌 f kne肋胡口04 .F Hndovtr prtparaTlon=MIQKCC AR

21、tinpL«l Inter #Hod«B hjndDVfr prvpsrationsM8014CBHmer TXlRELOCprvp (ti«nicQd«dWupervl如阳p申伽 ph鼻上2、M8014C2 FAIL_ENB_HO_PREP_TIMEUp dated: This coun ter is up dated follow ing the expiry of the guard ing timerTX2RELOC prep3、M8014C3 FAIL_ENB_HO_PREP_ACUp dated: This coun ter is up da

22、ted follow ing the recep ti on of an message from the target eNB.Prep arati on Failure4、M8014C5 FAIL_ENB_HO PREP OTHER Up dated: The coun ter is failure coun ter.up dated if the failureTarget tNQUEX2A P: Ha ndoverdetected does not match any otherSource eNBRRC Affaast/ntmefir CoJitro/<& _ .MME

23、SGWRFC Vcasunment ReportsHandover decisionX2AP Handover f?和 esf>Admisaoni contro'll and resourcesallocstlori on (sret cellXSAP H»ntfov4r PnprantQr Ftitur ar no msponj#FaiMd mwrho pnptnTi&ntdutto rjffiff； tg ryjflfiocpngpMeO'i4C3： FaiMd im+rho pripAraTi&nsdutto Urfltl tNodeB d

24、dmi>si»n controlM6：0J4CS: Falkd inttr tNodtB HO prtpralko-na dutm oth*r njisn5、M8014C6 ATT_INTER_ENB_HOUp dated: This coun ter is up dated follow ing the recep ti on of anRequest Ack no wledge message from the target eNB.X2A P: Ha ndoverSGWinter ellodeB*rimer rX2REL OCbkbc fhartfcpcHsl Sup&#

25、171;tvis9s 辭*wHon phaseX2A P:Release6、M8014C7 : SUCC INTER ENB HOUp dated: This coun ter is up dated follow ing the recep ti on of anResource message sent by the target eNB.UETarget eNBSource eNBMMESGWRRC CdrirtAChon &龊 c打内pu悄 MA/rCbrti惻a咚 >RftC血ft RflconffgurAfJanRtconfi).J<RRC Connecfjof

26、l Recon RffUfflf/on Complete »P#f#l Sw/tCflUser P/ene ijptUtw Rwjwesr>Pffcxef Ditw*UsBf PfaUpdate RvsppnsuPetti Switch Fteques t Achno wtedgeX2AP UE Conrexr Rele. rseRelease source resource?Handover complttiortIMGQDICT Succtssrui init«r *附曲曰 lhandQ¥»rsUiJDL Dau il 兀；ki7、M8014C

27、8 INTER_ENB_HO_FAILUp dated: This coun ter is up dated follow ing the expiry of the guard ing timer TX2RELOCoverall.J/jJUESGWSource eNBTarget eNBMMERRC Conntction RtcoFifturaiioti CompMr* >RRC Canntciton Rtcotffguraiion (Mas. Racon 血j4RRC ConH*tf/on ntcontfuiirttion Compfttt »Path Switch Rvq

28、unsiVi*r P/*n« Updttt Rtifutit>£n(j JlrfurtftrPtfckef D«t4MSODUCS: Total inter eNodeB HO fa IIIures due to timerEffOf or no responseError or no r»fponseTX2RELOCoverall expires1.3.3eNB内切换Coun terCou nter IDNetAct n ameeNB内收到MR次数M8009C0TOT NOT START HO PREPeNB内切换决断次数M8009C1TOT H

29、O DECISIONeNB内切换请求次数M8009C2INTRA ENB HO PREPeNB内切换准备失败次数M8009C3FAIL ENB HO P REP ACHO decisionHO preparaikonanemptexecutionM8009C5FAIL_ENB_HO _P REP_OTHeNB内切换尝试次数M8009C6ATT_INTRA_ENB_HOeNB内切换成功次数M8009C7SUCC_INTRA_ENB_HOeNB内切换执行失败次数M8009C8ENB_INTRA_HO_FAIL统计点关系：M8009C1 > M8014C2M8014C2 = M8014C3 +

30、 M8014C5 + M8014C6M8014C6 = M8014C7 + M8014C8 （注：现网实际数据对不上）1、M8009C0: TOT NOT START HO PREPMMESGWUp dated: The rece pti on of an RRC Measureme nt Report message sent by the UE to eNB and of the RRM decisi on not to execute a han dover. Up dated to the source cell.UESounc« eNBRRC /WefisuremenT &

31、lt;?oj lirp/<*L ML刊恂匚BhGcM8009C0Total not sTarred HO prwparadorisMSOO»CO updAtfld if tti» HO dads ion ic not to HOtime vvhtn measurement report ire CfliiiVfld firrri U £!2、M8009C1: TOT HO DECISIONUp dated: The rece pti on of an RRC Measureme nt Report message sent by the UE to3、M80

32、09C2: INTRA_ENB_HO_PREPUp dated: An in ternal eNB trigger. The eNB MM receives a list with the target cells from RRM and decides on an In tra-eNB Han dover. Up dated to the source cell.4、M8009C6: ATT_INTRA_ENB HOUp dated: The tran smissi onthe eNB to UE, which in dicates aof an RRCConnection Reconfi

33、gurationmessage sent byHan dover Comma nd to the UE. Up dated to the sourcecell.5、M8009C7: SUCC INTRAENB_HOUp dated: The recep ti on of an internalUECon text Release Request for the han doveron the source side. Up dated to the source cell.aiUEaSource eNBARC ConrtKtion f9Co(itguralion施师阿MMESGW*UUDL D

34、sia faource citi)L2 *jL .eid .ji j?i'£.ri-7 _ 一 RRC Atetfsure/n«nt ReportM3009 Intra elModeB h On level of source cellan do ver MeasurementsHandover decisionHand ever deeisior nftOndCI TbLil njrdovtF decisionsAdmission control and reiourceallocation on target ctllM5009CS ATttmpTtd intr

35、a tHcdtB handover ''匚finRRCRtciMiftgaranJort* Handover ExtcunenH- MBfli&gCB AfjtmpUd *No4eB harmovtnRRC Conneet/on ReconfJgur辭Sn Complete哙iH andcomplti onIRsIftaae Bourc* reflourcAB丄-， 9 U3005C7mAhand4v*rtULDL Dflfi (target k9H6、M8009C3: FAIL_ENB_HO_PREP_ACUp dated: An in ternal eNB trig

36、ger. The eNB MM receives a list with the targetcells from the RRMThe MM or RRM AC decides n ot to execute an In tra-eNB Ha ndover.Up dated to the source cell.7、M8009C5: FAIL_ENB_HO_PREP_OTHUp dated: An in ternal eNB trigger. The eNB MM receives a list with the target cells from RRM. The MM or RRM AC

37、 decides not to execute an In tra-eNB Han dover. The coun ter is up dated if the failure detected does not match any other failure coun ter.Up dated to the source cell.8、M8009C8: ENB_INTRA_HO_FAILUp dated: The coun ter is up dated to thesource cell when timer THOoverall expires.口 IbJUESource eNBRRC

38、HAsaaurement Coittrol*UL/DL Data / lourct ceitjMMESGW|却Orts屛IHandoverNAdmission control and resources allocation on target cell.?i'迦 jrj 111'figuntiar>RRCRw亡GM<L2 S/nc/jron(zatfon mi atngH0OO9C 112 InhfJ hNP HO di tXS dtiH to RL 価伽叵 MeOOClC n- Inlra oNR HO cJnapv Mio re oThfx frtahuroM

39、8009CeTotal! intrai eNodeB HO failures duie to timerTHOoverall expiresRRC Cortntctian Rtcot guniion Error or2 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PDCCHR题导致UE上发测量报告的UL GRANT没有收到;因P

40、USCH问题导致eNB未收到或收到CRC校验出错）2)? UE内部处理问题现象：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2.1.2? 黑名单切换准备阶段1)现象:切换请求发出，对方未收到2)现象:传输丢包目标小区拒绝3)现象:目标小区准入控制、容量问题目标小区回准备失败4)现象:已知的有 unkn0Wn-MME-Code其余的需要跟着LOG确定具体原因值TX2RELOC prep准备超时目标小区故障、告警2.1.3? 目标小区休眠切换执行阶段1)现象：切换命令（RRC连接重配）丢失2)? 覆盖、干扰等无线环境问题UE下行PDCCHW析失败，下行 PDCC

41、H受限UE下行PDSCH解析失败，下行PDSCH受限现象：切换完成信令（RRC连接重配完成）丢失3)? 覆盖、干扰等无线环境问题UE在目标小区的 P REAMBLEeNB没有收至U，上行 P RACH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P USCH限现象：在非真正的目标小区接入失败4)? PCI混淆现象：目标小区非最优小区5)?邻区混乱、漏配现象：源 eNB发起 Handover Cancel覆盖、干扰等无线环境问题 切换过程中失步，重建回源小区目标小区休眠目前主要是室分小区休眠问题2.1.4路径转换阶段1)现象：各S1AP信令丢失各网元内部处理信令失败S1 口传输异常，如传输丢包2）现象：X2AP UE CONTEXT REL丢失各网元内部处理信令失败X2 口传输异常，如传输丢包2.2按原因分类汇总分析上1 1'MJfl 芫亦主 口