TD-LTE網(wǎng)絡(luò)性能KPI(切換成功率)優(yōu)化手冊(cè)

1、TD-LTE網(wǎng)絡(luò)性能KPI （切換成功率）優(yōu)化手冊(cè)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映射公式切換成功率（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 功次數(shù)）/ （eNB間S1切換出請(qǐng)求次 數(shù)+ eNB間X2切換出請(qǐng)求次數(shù) + eNB 內(nèi)切換出請(qǐng)求次數(shù)）*100%100* sum(M8009c7 + M8014C7 +M8014c19) / sum(M8009c6 + M8014C0+ M8014C14)1.2 COUNTER定義1.2.1 集團(tuán)規(guī)范定義1、eNB間S1切換出請(qǐng)求次數(shù)：源eNB向MME發(fā)送的“切換請(qǐng)求”消息（

2、HANDOVER REQUIRED （3GPP TS ）,指示 eNB間通過S1接口的切換出準(zhǔn)備請(qǐng)求。向不同小區(qū)發(fā)送的同一切換準(zhǔn)備請(qǐng)求，需要重復(fù)統(tǒng) 計(jì)。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（UE CONTEXT RELEASE COMMAND （3GPP TS ）,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(qǐng)求次數(shù)：源eNB向目標(biāo)eNB發(fā)送的“切換請(qǐng)求”消息（HANDOVER REQUE0T（3GPP TS ）,指示 eNB間通過X2接口的切換出準(zhǔn)備請(qǐng)求。向不同小區(qū)發(fā)送的同一切換準(zhǔn)備請(qǐng)求，重復(fù)統(tǒng)計(jì)。4、eNB間X2切換出成

3、功次數(shù)：源eNB收至IJ目標(biāo)eNB發(fā)送的“UE上下文釋放"消息（UE CONTEXT RELEA S E3GPP TS ）, 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(qǐng)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(qǐng)求。（3GPP TS ）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

4、區(qū)間切換出成功。(3GPP TS )1.2.2 NSN 映射1、eNB間S1切換出請(qǐng)求次數(shù)：M8014c14： INTER_ENB_S1_HO_PREP The number of Inter eNB S1-based Handover preparations ;2、eNB間S1切換出成功次數(shù)：M8014c19: INTER_ENB_S1_HO_SUCCThe number of successful Inter eNB S1-based Handover completions ;3、eNB間X2切換出請(qǐng)求次數(shù)：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間X2切換出成功次數(shù)：M8014C7: SUCC_INTER_ENB_HOThe number of successful Inter-eNB X2-based Handover completions ；5、eNB內(nèi)切換出請(qǐng)求次數(shù)：M800

6、9c6: ATT_INTRA_ENB_HQ The number of Intra-eNB Handover attempts ;6、eNB內(nèi)切換出成功次數(shù)：M8009C7 : SUCC_INTRA_ENB_HQ The number of successful Intra-eNB Handover completions ;1.3 信令統(tǒng)計(jì)點(diǎn)1.3.1 eNB 間 S1 切換CounterCounter IDNetAct nameeNB間S1切換請(qǐng)求次數(shù)M8014C14INTER_ENB_S1_HO_PREPeNB間S1切換目標(biāo)小區(qū)準(zhǔn)備 失敗次數(shù)M8014C15INTER_S1_HO_PRE

7、P_FAIL_TIMEM8014C16INTER_S1_HO_PREP_FAIL_NORRM8014C17INTER_S1_HO_PREP_FAIL_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_FAIL統(tǒng)計(jì)點(diǎn)關(guān)系： M8014C14 = M8014C15 + M8014C16 + M8014C17 + M8014C18M8014c18 = M8014c19 + M8014c20 （注：現(xiàn)網(wǎng)實(shí)際數(shù)據(jù)對(duì)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號(hào):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麗g Tunnel ResponseDn rvrr butfor(Kt 門nd in仃 nnqiT packK to birqteND11. Trigger HO decision畢_出邙普通萼電>；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 廣門二亡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“蘭h、,汨口四對(duì)3口叫 加單-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 間 X2 切換CounterCounter IDNetAct nameeNB間X2切換請(qǐng)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_F

18、AILM8014C2/C3；C5M0O14C8M8014COM8014C6M8014C7HO preparationSucces導(dǎo)fuWail巳d Successful/falledattemptHO preparation HO execution統(tǒng)計(jì)點(diǎn)關(guān)系： M8014C0 = M8014c2 + M8014c3 + M8014c5 + M8014c6M8014c6 = M8014C7 + M8014C8 （注：現(xiàn)網(wǎng)實(shí)際數(shù)據(jù)對(duì)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陽«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戶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網(wǎng)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m(xù)n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秤西處 ReqrnstUur 戶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內(nèi)收到MR次數(shù)M8009

28、C0TOT_NOT_START_HO_PREPeNB內(nèi)切換決斷次數(shù)M8009C1TOT_HO_DECISIONeNB內(nèi)切換請(qǐng)求次數(shù)M8009C2INTRA_ENB_HO_PREPeNB內(nèi)切換準(zhǔn)備失敗次數(shù)M8009C3FAIL_ENB_HO_PREP_ACM8009C5FAIL_ENB_HO_PREP_OTHeNB內(nèi)切換嘗試次數(shù)M8009C6ATT_INTRA_ENB_HO1.3.3 eNB內(nèi)切換eNB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_FAILMQ009CQM80Q9C1M8009C2M80Q9C6M80

29、09C7MB009C3/C5口sitiv曰negative HO preparation Succe$srul/failed Successful HO HO dec博ion anemptHO preparation execution統(tǒng)計(jì)點(diǎn)關(guān)系：M8009C1 > M8014c2M8014c2 = M8014c3 + M8014c5 + M8014c6M8014c6 = M8014c7 + M8014c8 （注：現(xiàn)網(wǎng)實(shí)際數(shù)據(jù)對(duì)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/融卜詠3用詞加小加打力中UL DL D&ta (source 匚國，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 影響切換成功率的因素2.1 從信令流程角度分析（注：個(gè)別流程可以會(huì)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

38、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(huì)影響后臺(tái)統(tǒng)計(jì)切換成功率指標(biāo)）1）現(xiàn)象：eNB未收到測量報(bào)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(bào)告的 UL GRANT沒有收至IJ;因PUSCH問題導(dǎo)致eNB未收到或收到CRC校驗(yàn)出錯(cuò)）UE內(nèi)部處理問題2）現(xiàn)象：eNB未發(fā)送切換請(qǐng)求參數(shù)問題：如觸發(fā)事件門限過晚等，未及時(shí)觸發(fā)測量報(bào)告鄰區(qū)漏配黑名單2.1.2 切換準(zhǔn)備階段1）現(xiàn)象：切換請(qǐng)求發(fā)出，對(duì)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

39、）現(xiàn)象：TX2RELOCprept備超時(shí)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UE下行PDSCH解析失敗，下行PDSCH受限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限UE上發(fā)切換完成，eNB沒有收到，上行 PUSCH受限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 Handover Cancel覆蓋、干擾等無