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

1、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指標公式指標名稱集團規(guī)范公式NSN映射公式切換成功率(eNB間S1切換岀成功次數(shù) + eNB間 X2切換岀成功次數(shù) + eNB內(nèi)切換岀成 功次數(shù))/ (eNB間S1切換岀請求次 數(shù)+ eNB間X2切換岀請求次數(shù)+ eNB 內(nèi)切換岀請求次數(shù))*100%100* sum(M8009C7 + M8014C7 +M8014C19) / sum(M8009C6 + M8014C0 +M8014C14)1.2 COUNTE定X1.2.1 集團規(guī)范定義1、eNB間S1切換出請求次數(shù):源 eNB向 MME發(fā)送的“切換請求”消息( HAND

2、OVER REQUIRED3GPP TS 36.413 ),指示eNB間通過S1接口的切換出準備請求。向不同小區(qū)發(fā)送的同一切換準備請求，需要重復統(tǒng)計。2、eNB間S1切換出成功次數(shù):源eNB收到MME發(fā)送的“ UE上下文釋放命令” 消息(UECONTEXRELEASEOMMAND3GPPTS 36.413)，指示eNB間通過S1接口的切換出執(zhí)行成功。3、eNB間X2切換出請求次數(shù):源eNB向目標eNB發(fā)送的“切換請求”消息( HANDOVER REQUEST3GPP TS 36.423 ), 指示eNB間通過X2接口的切換出準備請求。向不同小區(qū)發(fā)送的同一切換準備請求，重復統(tǒng) 計。4、eNB間X

3、2切換出成功次數(shù):源eNB收到目標eNB發(fā)送的“ UE上下文釋放”消息(UE CONTEXT RELEASE( 3GPP TS36.423)，指示eNB間通過X2接口的切換出執(zhí)行成功。5、eNB內(nèi)切換出請求次數(shù):的“ RRC連接重配置”消息eNB 向 UE 發(fā)送攜帶 mobilityControllnfo(RRCConnectionReconfiguration),指示 eNB內(nèi)小區(qū)間切換出請求。(3GPP TS 36.331 )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

4、 eNB 內(nèi)小區(qū)間切換出成功。(3GPP TS36.331 )1.2.2NSN映射1、eNB間S1切換出請求次數(shù):M8014C14： INTER_ENB_S1_H0_ PREFThe number of In ter eNB S1-based Ha ndoverprep aratio ns2、eNB間S1切換出成功次數(shù):M8014C19 INTER_ENB_S1_HO_SU,(The number of successful In ter eNB S1-basedHan dover compi eti ons3、eNB間X2切換出請求次數(shù):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間X2切換出成功次數(shù):M8014C7SUCC_INTER_ENB_l，0he number of successful Inter-eNB X2-basedHandovercompietions ;5、eNB內(nèi)切換出請

6、求次數(shù):M8009C6 ATT_INTRA_ENB_HOThe number of Intra-eNB Handover attempts6、eNB內(nèi)切換出成功次數(shù):M8009C7: SUCC_INTRA_ENB_HOThe number of successfulIntra-eNBHandovercompietions ;1.3 信令統(tǒng)計點Coun terCou nter IDNetAct n ameeNB間S1切換請求次數(shù)M8014C14INTER_ENB_S1_HO _PREPeNB間S1切換目標小區(qū)準備 失敗次數(shù)M8014C15INTER S1 HO PREP F AIL TIMEM8

7、014C16INTER S1 HO PREP FAI L NORRM8014C17INTER S1 HO PREP F AIL OTHEReNB間S1切換嘗試次數(shù)M8014C18INTER ENB S1 HO ATTeNB間S1切換成功次數(shù)M8014C19INTER ENB S1 HO SUCCeNB間S1切換失敗次數(shù)M8014C20INTER ENB S1 HO FAIL1.3.1 eNB間 S1 切換（注：現(xiàn)網(wǎng)實際數(shù)據(jù)對不上）統(tǒng)計點關(guān)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皿強口牌la 9爾垃帕料FTrnrKffi-1* I町鴉蟲型警楓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 :盡 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 華 “BP2號怎 »'l Us -flwjrtts ：4iu*i HTri tefvr口 MOMit lf<i 巾亡 D4U二.Z*甲Mire 單二 ZifflUIF*口 壬牛 J - Qi氓卅阿二Il忙叭prrs&ircM*衛(wèi)

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間X2切換請求次數(shù)M8014C0INTER ENB HO PREPeNB間X2切換目標小區(qū)準備

18、M8014C2FAIL_ENB_HO _P REP_TIMEeNB間X2切換1.3.2失敗次數(shù)M8014C3FAIL_ENB_HO _P REP_ACM8014C5FAIL_ENB_HO _P REP_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_FAILM8014C2/C3/C5SSiM3014COM8014C6MI8014C7HO preparation Successful/falled Successtul/falle

19、d attemptHO preparation HO execution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）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如陽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 &齪 c打內(nèi)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內(nèi)切換Coun terCou nter IDNetAct n ameeNB內(nèi)收到MR次數(shù)M8009C0TOT NOT START HO PREPeNB內(nèi)切換決斷次數(shù)M8009C1TOT H

29、O DECISIONeNB內(nèi)切換請求次數(shù)M8009C2INTRA ENB HO PREPeNB內(nèi)切換準備失敗次數(shù)M8009C3FAIL ENB HO P REP ACHO decisionHO preparaikonanemptexecutionM8009C5FAIL_ENB_HO _P REP_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 +

30、 M8014C5 + M8014C6M8014C6 = M8014C7 + M8014C8 （注：現(xiàn)網(wǎng)實際數(shù)據(jù)對不上）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施師阿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噲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|卻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，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）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）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PDCCHR題導致UE上發(fā)測量報告的UL GRANT沒有收到;因P

40、USCH問題導致eNB未收到或收到CRC校驗出錯）2)? UE內(nèi)部處理問題現(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 鄰區(qū)漏配2.1.2? 黑名單切換準備階段1)現(xiàn)象:切換請求發(fā)出，對方未收到2)現(xiàn)象:傳輸丟包目標小區(qū)拒絕3)現(xiàn)象:目標小區(qū)準入控制、容量問題目標小區(qū)回準備失敗4)現(xiàn)象:已知的有 unkn0Wn-MME-Code其余的需要跟著LOG確定具體原因值TX2RELOC prep準備超時目標小區(qū)故障、告警2.1.3? 目標小區(qū)休眠切換執(zhí)行階段1)現(xiàn)象：切換命令（RRC連接重配）丟失2)? 覆蓋、干擾等無線環(huán)境問題UE下行PDCCHW析失敗，下行 PDCC

41、H受限UE下行PDSCH解析失敗，下行PDSCH受限現(xiàn)象：切換完成信令（RRC連接重配完成）丟失3)? 覆蓋、干擾等無線環(huán)境問題UE在目標小區(qū)的 P REAMBLEeNB沒有收至U，上行 P RACH限UE下行接收RAR失敗，下行PDSCH限UE上發(fā)切換完成，eNB沒有收到，上行P USCH限現(xiàn)象：在非真正的目標小區(qū)接入失敗4)? PCI混淆現(xiàn)象：目標小區(qū)非最優(yōu)小區(qū)5)?鄰區(qū)混亂、漏配現(xiàn)象：源 eNB發(fā)起 Handover Cancel覆蓋、干擾等無線環(huán)境問題 切換過程中失步，重建回源小區(qū)目標小區(qū)休眠目前主要是室分小區(qū)休眠問題2.1.4路徑轉(zhuǎn)換階段1)現(xiàn)象：各S1AP信令丟失各網(wǎng)元內(nèi)部處理信令失敗S1 口傳輸異常，如傳輸丟包2）現(xiàn)象：X2AP UE CONTEXT REL丟失各網(wǎng)元內(nèi)部處理信令失敗X2 口傳輸異常，如傳輸丟包2.2按原因分類匯總分析上1 1'MJfl 芫亦主 口