愛(ài)立信LTE_KPI優(yōu)化介紹

1、LTE_KPI分類接入性保持性移動(dòng)性完整性可用性利用率業(yè)務(wù)量LTE KPILTE_KPI常用統(tǒng)計(jì)分類分類 解釋解釋推薦推薦KPI 用戶影響用戶影響 接入性滿足用戶業(yè)務(wù)需求的能力業(yè)務(wù)接入成功率高 保持性 為用戶提供持續(xù)服務(wù)的能力業(yè)務(wù)掉線率 高 完整性 為客戶提供預(yù)期服務(wù)質(zhì)量的能力上下行用戶平均吞吐率高 移動(dòng)性切換性能系統(tǒng)內(nèi)切換成功率高 可用率設(shè)備可用性小區(qū)退服時(shí)長(zhǎng)高利用率業(yè)務(wù)、負(fù)荷、資源使用忙時(shí)PRB平均利用率中業(yè)務(wù)量容量及業(yè)務(wù)承載上下行空口流量中LTE_KPI指標(biāo)定義指標(biāo)名稱指標(biāo)名稱中文映射算法中文映射算法英文映射算法英文映射算法下行吞吐率小區(qū)下行平均吞吐率 100*pmPdcpVolDlDr

2、b/900上行吞吐率小區(qū)上行平均吞吐率 100*pmPdcpVolUlDrb/900RRC連接建立成功率RRC連接建立成功次數(shù)/ RRC連接建立請(qǐng)求次數(shù)*100%EutrancellTDD:pmRrcConnEstabSucc/EutrancellTDD:pmRrcConnEstabAtt*100%E-RAB建立成功率E-RAB建立成功數(shù)/E-RAB建立請(qǐng)求數(shù)*100%(EutrancellTDD:pmErabEstabSuccInit+EutrancellTDD:pmErabEstabSuccAdded)/（EutrancellTDD:pmErabEstabAttInit+Eutrancel

3、lTDD:pmErabEstabAttAdded）*100%無(wú)線接通率E-RAB建立成功數(shù)/E-RAB建立請(qǐng)求數(shù)*RRC連接建立成功次數(shù)/ RRC連接建立請(qǐng)求次數(shù)*100%(EutrancellTDD:pmErabEstabSuccInit+EutrancellTDD:pmErabEstabSuccAdded)/（EutrancellTDD:pmErabEstabAttInit+EutrancellTDD:pmErabEstabAttAdded）*EutrancellTDD:pmRrcConnEstabSucc/EutrancellTDD:pmRrcConnEstabAtt*100%會(huì)話建立成

4、功率RRC、S1、E-RAB建立成功率乘積 100*(pmRrcConnEstabSucc/pmRrcConnEstabAtt) * (pmS1SigConnEstabSucc/pmS1SigConnEstabAtt) * (pmErabEstabSuccInit + pmErabEstabSuccAdded)/(pmErabEstabAttInit + pmErabEstabAttAdded)無(wú)線掉線率（eNB請(qǐng)求釋放上下文數(shù)-正常的eNB請(qǐng)求釋放上下文數(shù)）/初始上下文建立成功次數(shù)*100% (EutranCellTDD:pmUeCtxtRelNormalEnb+EutranCellTDD:

5、pmUeCtxtRelAbnormalEnb-EutranCellTDD:pmUeCtxtRelNormalEnb)/EutranCellTDD:pmUeCtxtEstabSucc*100%E-RAB掉線率( eNB請(qǐng)求釋放的E-RAB數(shù) -正常的eNB請(qǐng)求釋放的E-RAB數(shù) +切出失敗的E-RAB數(shù) )/E-RAB建立成功數(shù)， 其中代表將本地網(wǎng)范圍內(nèi)的各個(gè)小區(qū)的統(tǒng)計(jì)結(jié)果累加。pmErabRelNormalEnb+pmErabRelAbnormalEnb-pmErabRelNormalEnb+Sum(pmHoPrepAttLteInterFQci+ pmHoPrepAttLteIntraFQc

6、i)-Sum(pmHoPrepSuccLteInterFQci-pmHoPrepSuccLteIntraFQci)/(EutrancellTDD:pmErabEstabSuccInit+EutrancellTDD:pmErabEstabSuccAdded）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%EutranCellTDD:pmHoExecOutS1SuccInterEnb+EutranCellTDD:pmHoExecOutX2SuccInte

7、rEnb+Sum(EutrancellRelation:pmHOExeSuccLteIntraF+EutrancellRelation:pmHOExeSuccLteInterF)/EutranCellTDD:pmHoPrepOutS1AttInterEnb+The previous mapping:EutranCellTDD:pmHoExecOutX2AttInterEnbThe new mapping:pmHoPrepOutX2AttInterEnb+EUtranCellRelation:pmHoExeAttLteIntraF(intra eNB)+EUtranCellRelation:pm

8、HoExeAttLteInterF(intra eNB)*100%系統(tǒng)內(nèi)切換成功率LTE系統(tǒng)內(nèi)切換成功率 100*(pmHoExeSuccLteInterF+pmHoExeSuccLteIntraF)/(pmHoPrepAttLteInterF+pmHoPrepAttLteIntraF)上行業(yè)務(wù)信息PRB占用率上行業(yè)務(wù)信道占用PRB平均數(shù)/小區(qū)PRB數(shù)*100%。EutrancellTDD:pmPrbUsedUlDtch/ULSubframeTotalNum/100*100%下行業(yè)務(wù)信息PRB占用率下行業(yè)務(wù)信道占用PRB平均數(shù)/小區(qū)PRB數(shù)*100%。sum(EutrancellTDD:pmP

9、rbUsedDlDtchFirstTransQci) * (1+EutrancellTDD:pmPrbUsedDlReTrans/EutrancellTDD:pmPrbUsedDlFirstTrans)/DLSubframeTotalNum/小區(qū)PRB數(shù)*100%設(shè)備板卡CPU負(fù)荷 設(shè)備處理板卡負(fù)荷 pmProcessorLoadSum尋呼成功率尋呼消息發(fā)送成功次數(shù)/尋呼消息發(fā)送次數(shù)100*(pmPagReceived - pmPagDiscarded)/pmPagReceived 小區(qū)可用率可用小區(qū)占比 100*(1-pmCellDowntimeAuto)/900用戶會(huì)話時(shí)長(zhǎng)用戶會(huì)話平均時(shí)長(zhǎng)

10、 pmSessionTimeUe下行活動(dòng)用戶數(shù)下行活動(dòng)用戶數(shù)pmActiveUeDlSum上行活動(dòng)用戶數(shù)上行活動(dòng)用戶數(shù)pmActiveUeUlSum下行物理資源占用率 下行物理資源占用率(pmPrbUsedDlDtch+pmPrbUsedDlSrb)/DLSubframeTotalNum上行物理資源占用率 上行物理資源占用率(pmPrbUsedUlDtch+pmPrbUsedUlSrb)/ULSubframeTotalNumCSFB成功率CSFB成功率(pmTotNoRrcConnReqCsfbIndSucc/(pmTotNoRrcConnReqCsfbInd-pmNoLoadSharingR

11、rcConnCsfbInd)*(pmNoNormalNasSignRelCsfbInd/(pmNoNormalNasSignRelCsfbInd+pmNoSystemNasSignRelCsfbInd)*(pmNoRabEstSuccCsfbInd+pmNoRabEstSuccCsfbDetect)/(pmNoRabEstAttCsfbInd+pmNoRabEstAttCsfbDetect)上行干擾 UL_Interfrence上行平均干擾值算出PDF Counter: pmRadioRecInterferencePwr它的加權(quán)平均值。UL_Interfrence=Total_Interfer

12、ence_Power/pmRadioRecInterferencePwr_value;Total_Interference_Power=pmRadioRecInterferencePwrWhere(Vector Index=0)*-121+pmRadioRecInterferencePwrWhere(Vector Index=1)*-120.5+pmRadioRecInterferencePwrWhere(Vector Index=2)*-119.5+pmRadioRecInterferencePwrWhere(Vector Index=3)*-118.5+pmRadioRecInterfer

13、encePwrWhere(Vector Index=4)*-117.5+pmRadioRecInterferencePwrWhere(Vector Index=5)*-116.5+pmRadioRecInterferencePwrWhere(Vector Index=6)*-115.5+pmRadioRecInterferencePwrWhere(Vector Index=7)*-114.5+pmRadioRecInterferencePwrWhere(Vector Index=8)*-113.5+pmRadioRecInterferencePwrWhere(Vector Index=9)*-

14、112.5+pmRadioRecInterferencePwrWhere(Vector Index=10)*-110+pmRadioRecInterferencePwrWhere(Vector Index=11)*-106+pmRadioRecInterferencePwrWhere(Vector Index=12)*-102+pmRadioRecInterferencePwrWhere(Vector Index=13)*-98+pmRadioRecInterferencePwrWhere(Vector Index=14)*-94+pmRadioRecInterferencePwrWhere(

15、Vector Index=15)*-92pmRadioRecInterferencePwr_value=pmRadioRecInterferencePwrWhere(Vector Index=0)+pmRadioRecInterferencePwrWhere(Vector Index=1)+pmRadioRecInterferencePwrWhere(Vector Index=2)+pmRadioRecInterferencePwrWhere(Vector Index=3)+pmRadioRecInterferencePwrWhere(Vector Index=4)+pmRadioRecInt

16、erferencePwrWhere(Vector Index=5)+pmRadioRecInterferencePwrWhere(Vector Index=6)+pmRadioRecInterferencePwrWhere(Vector Index=7)+pmRadioRecInterferencePwrWhere(Vector Index=8)+pmRadioRecInterferencePwrWhere(Vector Index=9)+pmRadioRecInterferencePwrWhere(Vector Index=10)+pmRadioRecInterferencePwrWhere

17、(Vector Index=11)+pmRadioRecInterferencePwrWhere(Vector Index=12)+pmRadioRecInterferencePwrWhere(Vector Index=13)+pmRadioRecInterferencePwrWhere(Vector Index=14)+pmRadioRecInterferencePwrWhere(Vector Index=15)LTE_KPI關(guān)鍵指標(biāo)解釋-接入性無(wú)線接通率無(wú)線接通率pmRrcConnEstabSucc: The total number of successful RRC Connectio

18、n Establishments.pmRrcConnEstabAtt: The total number of RRC Connection Request attempts.pmRrcConnEstabAttReatt: The total number of RRC Connection Request attempts that are considered as re-attempts.pmErabEstabSuccInit: The total number of successful initial E-RAB Establishments.pmErabEstabSuccAdded

19、: The total number of successfully added E-RABs. pmErabEstabAttInit: The total number of initial E-RAB Establishment attempts.pmErabEstabAttAdded: The total number of added E-RAB Establishment attempts.RRC連接建立請(qǐng)求ERAB建立成功RRC連接建立完成ERAB建立請(qǐng)求UEENBMMERRC建立流程開始：流程開始：RRC嘗試：RRC Connection Request流程結(jié)束：流程結(jié)束：成功：

20、RRC Connection Setup失?。篟RC Connection Request Rejected設(shè)備故障設(shè)備故障：優(yōu)化手段：加大對(duì)全網(wǎng)設(shè)備故障、傳輸故障告警監(jiān)控及故障的排查力度；終端問(wèn)題：終端問(wèn)題：優(yōu)化手段：通過(guò)信令采集等手段對(duì)比TOP終端性能；空口信號(hào)質(zhì)量：空口信號(hào)質(zhì)量：優(yōu)化手段：通過(guò)天饋優(yōu)化、覆蓋優(yōu)化、提升RSRP、SINR等；網(wǎng)絡(luò)容量：網(wǎng)絡(luò)容量：優(yōu)化手段：調(diào)整小區(qū)下最大接入用戶；參數(shù)設(shè)置：參數(shù)設(shè)置：優(yōu)化手段：通過(guò)優(yōu)化最小接收電平、小區(qū)選擇參數(shù)、小區(qū)重選參數(shù)、4-3重選參數(shù)、鄰區(qū)核查等手段提升；網(wǎng)內(nèi)網(wǎng)外干擾：網(wǎng)內(nèi)網(wǎng)外干擾：優(yōu)化手段：網(wǎng)外干擾：如CDMA、WCDMA、TDS等干擾

21、，通過(guò)掃頻確定干擾，提升與TDL間離度等手段來(lái)盡量避免干擾；政府會(huì)議、學(xué)校考試等放置干擾器，則采取鎖小區(qū)等手段來(lái)降低對(duì)指標(biāo)的影響；網(wǎng)內(nèi)干擾：核查PCI，減少因PCI MOD3、MOD6干擾導(dǎo)致的RRC建立失??；室內(nèi)外優(yōu)化：室內(nèi)外優(yōu)化：優(yōu)化手段：通過(guò)路測(cè)等手段檢查室分泄漏，降低因室分泄漏導(dǎo)致的乒乓重選或干擾導(dǎo)致的RRC建立失敗。影響RRC建立指標(biāo)因素及優(yōu)化思路E-RABE-RAB建立建立流程開始：流程開始：嘗試 ：ERAB建立請(qǐng)求nitial Context Setup Request）流程結(jié)束：流程結(jié)束：成功：RBS向MME發(fā)送Initial Context Setup Response設(shè)備故

22、障設(shè)備故障：優(yōu)化手段：加大對(duì)全網(wǎng)設(shè)備故障、傳輸故障告警監(jiān)控及故障的排查力度；終端問(wèn)題：終端問(wèn)題：優(yōu)化手段：通過(guò)信令采集等手段對(duì)比TOP終端性能；空口信號(hào)質(zhì)量：空口信號(hào)質(zhì)量：優(yōu)化手段：通過(guò)天饋優(yōu)化、覆蓋優(yōu)化、提升RSRP、SINR等；參數(shù)參數(shù)設(shè)置：設(shè)置：優(yōu)化手段：通過(guò)調(diào)整3-4重定向、4-4G宏站-室分重選參數(shù)、4-3G重選參數(shù)、4-3G重定向參數(shù)，核查修改PCI等；網(wǎng)網(wǎng)內(nèi)網(wǎng)外干擾：內(nèi)網(wǎng)外干擾：優(yōu)化手段：網(wǎng)外干擾：如CDMA、WCDMA、TDS等干擾，通過(guò)掃頻確定干擾，提升與TDL間離度等手段來(lái)盡量避免干擾；政府會(huì)議、學(xué)校考試等放置干擾器，則采取鎖小區(qū)等手段來(lái)降低對(duì)指標(biāo)的影響；網(wǎng)內(nèi)干擾：核查PC

23、I，減少因PCI MOD3、MOD6干擾導(dǎo)致的RAB建立失??；室內(nèi)外優(yōu)化：室內(nèi)外優(yōu)化：優(yōu)化手段：通過(guò)路測(cè)等手段檢查室分泄漏，降低因室分泄漏導(dǎo)致的乒乓重選或干擾導(dǎo)致的RAB建立失敗。影響E-RAB建立指標(biāo)因素及優(yōu)化思路流程結(jié)束：成功：在S1邏輯信道上收到消息，如：S1 initial context setup request 流程開始：嘗試 ：Initial UE ( RBS Message)LTE_KPI關(guān)鍵指標(biāo)解釋-保持性E-RAB掉掉線線率率pmErabRelAbnormalEnbAct: The total number of abnormal E-RAB Releases per c

24、ell initiated by the eNB and that there was data in either the UL or DL buffer (i.e. active).pmErabRelAbnormalMmeAct: The total number of E-RAB Releases initiated by the MME considered as abnormal.pmErabRelAbnormalEnb: The total number of abnormal E-RAB Releases triggered by eNB per cell.pmErabRelNo

25、rmalEnb: The total number of normal E-RAB Releases triggered by eNB per cell.pmErabRelMme: The total number of E-RAB Releases per cell initiated by the MME excluding successful handover.E-RAB Release Procedure MME Initiated在在BufferBuffer中有數(shù)據(jù)的非正常釋放，才是用戶感知的掉話中有數(shù)據(jù)的非正常釋放，才是用戶感知的掉話E-RAB Release Procedure

26、 eNB Initiated無(wú)線無(wú)線掉線掉線率率無(wú)線掉線率：（eNB請(qǐng)求釋放上下文數(shù)-正常的eNB請(qǐng)求釋放上下文數(shù)）/初始上下文建立成功次數(shù)*100% =(pmUeCtxtRelNormalEnb+pmUeCtxtRelAbnormalEnb-pmUeCtxtRelNormalEnb)/pmUeCtxtEstabSucc*100%該指標(biāo)指示了UE CONTEXT異常釋放的比例。異常請(qǐng)求釋放上下文數(shù)通過(guò)UE CONTEXT RELEASE REQUEST中包含異常原因的消息個(gè)數(shù)統(tǒng)計(jì)；初始上下文建立成功次數(shù)通過(guò)包含建立成功信息的Initial Context Setup Response消息個(gè)數(shù)。

27、設(shè)備故障：設(shè)備故障：優(yōu)化手段：加大對(duì)全網(wǎng)設(shè)備故障、傳輸故障告警監(jiān)控及故障的排查力度；終端問(wèn)題：終端問(wèn)題：優(yōu)化手段：通過(guò)信令采集等手段對(duì)比TOP終端性能；空口信號(hào)質(zhì)量：空口信號(hào)質(zhì)量：優(yōu)化手段：通過(guò)天饋優(yōu)化、覆蓋優(yōu)化、提升RSRP、SINR等減少因無(wú)線環(huán)境等因素造成的掉線；擁塞：擁塞：優(yōu)化手段：調(diào)整最小接入電平、調(diào)整小區(qū)下最大用戶數(shù)、擴(kuò)容等手段來(lái)提升；參數(shù)設(shè)置：參數(shù)設(shè)置：優(yōu)化手段：小區(qū)選擇、小區(qū)重選、UE定時(shí)器等參數(shù)優(yōu)化調(diào)整；MOD3MOD3、MOD6MOD6干擾優(yōu)化：干擾優(yōu)化：優(yōu)化手段：核查PCI，避免PCI對(duì)打，鄰區(qū)中有相同PCI等；影響無(wú)線掉線率指標(biāo)因素及優(yōu)化思路下行用戶速率下行用戶速率DL

28、UT（Downlink User Throughput ）KPI計(jì)算公式pmPdcpVolDlDrb: 下行方向上總的DRB的流量 Unit: 1 kilobit (1 000 bits)pmPdcpVolDlDrbLastTTI: buffer為空前的最后一個(gè)TTI上DRB的流量 Unit: 1 kilobit (1 000 bits)pmUeThpTimeDl: 下行有效的傳輸時(shí)間，從buffer里第一個(gè)PDCP SDU在Uu口上發(fā)送到最后buffer為空為止，其中去除buffer為空前的一個(gè)TTI. Unit: 1 msNote：我們?cè)诮y(tǒng)計(jì)下行用戶速率的過(guò)程中，從空口的第一個(gè)包調(diào)度，到用

29、戶的最后一個(gè)數(shù)據(jù)調(diào)度完成，將去除尾包數(shù)據(jù)量和時(shí)間。上行也同樣如此。統(tǒng)計(jì)原則統(tǒng)計(jì)原則KPI上行用戶速率上行用戶速率ULUT（Uplink User Throughput ）KPI計(jì)算公式pmUeThpVolUl:上行方向上總的DRB的流量 Unit: 1 kilobit (1 000 bits)pmUeThpTimeUl: 上行有效傳輸時(shí)間Unit: 1 ms統(tǒng)計(jì)原則統(tǒng)計(jì)原則KPI系統(tǒng)內(nèi)切換成功率系統(tǒng)內(nèi)切換成功率HOSR（Intra-LTE Handover Success Rate ）KPI計(jì)算公式同頻切換異頻切換同頻切換設(shè)備故障：設(shè)備故障：優(yōu)化手段：加大對(duì)全網(wǎng)設(shè)備故障、傳輸故障告警監(jiān)控及故障

30、的排查力度；終端問(wèn)題：終端問(wèn)題：優(yōu)化手段：通過(guò)信令采集等手段對(duì)比TOP終端性能；空口信號(hào)質(zhì)量：空口信號(hào)質(zhì)量：優(yōu)化手段：通過(guò)天饋優(yōu)化、覆蓋優(yōu)化、提升RSRP、SINR，梳理切換關(guān)系等；參數(shù)核查：參數(shù)核查：優(yōu)化手段：同過(guò)優(yōu)化同頻、異頻切換測(cè)量、切換判決參數(shù)、小區(qū)下最小接入電平等參數(shù)；鄰區(qū)優(yōu)化：鄰區(qū)優(yōu)化：優(yōu)化手段：定期核查X2告警，冗余鄰區(qū)，對(duì)切換基數(shù)較小但失敗分子較多鄰區(qū)進(jìn)行增刪，或者禁止切換，核查鄰區(qū)中是否有同PCI鄰區(qū)等；CIOCIO、A3A3、A5A5觸發(fā)定時(shí)器、遲滯等參數(shù)精細(xì)化調(diào)整：觸發(fā)定時(shí)器、遲滯等參數(shù)精細(xì)化調(diào)整：優(yōu)化手段：根據(jù)道路測(cè)試、場(chǎng)景對(duì)CIO、A3、A5事件定時(shí)器等參數(shù)進(jìn)行精細(xì)化

31、調(diào)整；網(wǎng)內(nèi)外干擾：網(wǎng)內(nèi)外干擾：優(yōu)化手段：網(wǎng)外干擾：如CDMA、WCDMA、TDS等干擾，通過(guò)掃頻確定干擾，提升與TDL間離度等手段來(lái)盡量避免干擾；政府會(huì)議、學(xué)?？荚嚨确胖酶蓴_器，則采取鎖小區(qū)等手段來(lái)降低對(duì)指標(biāo)的影響；網(wǎng)內(nèi)干擾：核查PCI，減少因PCI MOD3、MOD6干擾導(dǎo)致的切換失敗等；室內(nèi)外優(yōu)化：室內(nèi)外優(yōu)化：優(yōu)化手段：根據(jù)室分場(chǎng)景進(jìn)行室內(nèi)外切換測(cè)量、判決、觸發(fā)時(shí)延等參數(shù)進(jìn)行精細(xì)化調(diào)整。影響切換成功率指標(biāo)因素及優(yōu)化思路到到WCDMA的系統(tǒng)間切換成功率的系統(tǒng)間切換成功率IRAT-HOSR-3GKPI計(jì)算公式The Intra LTE HO Success rate (HOSR)Intra L

32、TE HO Success rate (HOSR) is defined as the number of successful intra LTE handover attempts divided by the total number of intra LTE handover attempts.It is the probability of successfully initiating and completing a handover to another cell in the LTE network which is centred on the same carrier f

33、requency. 小區(qū)完好率Cell Availability (CA)KPI計(jì)算公式計(jì)數(shù)器： CellDowntimeMan 由于下列因素小區(qū)關(guān)閉時(shí)長(zhǎng)：- 小區(qū)狀態(tài)人工設(shè)置為關(guān)閉- 維護(hù)需要，臨時(shí)關(guān)閉小區(qū)CellDowntimeAuto 由于故障，造成小區(qū)狀態(tài)處于關(guān)閉的時(shí)長(zhǎng)注：不包括小區(qū)啟動(dòng)N:小區(qū)數(shù)目L:為統(tǒng)計(jì)區(qū)間ROP數(shù)量System Load Downlink Volume Uplink Volume Active UEs Average number of simultaneous E-RABs UE Session TimePhysical Resources PRB utili

34、zationProcessor Load MP LoadDownlink VolumePIUplink VolumePI計(jì)數(shù)器pmPdcpVolDlDrbUnit: 1 kilobit (1 000 bits)The total volume (PDCP SDU) on Data Radio Bearers that has been transmitted in the downlink direction in the PDCP layer.pmPdcpVolDlSrb Unit: 1 kilobit (1 000 bits)The total volume (PDCP SDU) on S

35、ignaling Radio Bearers that has been transmitted in the downlink direction in the PDCP layer.計(jì)數(shù)器pmPdcpVolUlDrb Unit: 1 kilobit (1 000 bits)The total volume (PDCP SDU) on Data Radio Bearers that has been received in the uplink direction.pmPdcpVolUlSrbUnit: 1 kilobit (1 000 bits)The total number of bi

36、ts (PDCP SDU) on Signaling Radio Bearers that has been transferred (acknowledged by the RBS) in the uplink direction.Number of Active UsersPI計(jì)數(shù)器：pmActiveUeDlSum：Number of UEs with DRB data to send in the downlink direction.Aggregates for each TTIpmActiveUeUlSum：Number of UEs with buffer status repor

37、tsindicating DRB data to be sent in the uplink direction.Aggregates for each TTIAverage number of simultaneous E-RABspmErabLevSumpmErabLevSum Sampling rate: 5 secondspmErabLevSamppmErabLevSamp Sampling rate: 5 seconds計(jì)數(shù)器：pmErabLevSum Sum of all sample values recorded for Number of simultaneous E-RAB

38、spmErabLevSamp Counts the number of times the corresponding Sum counters has been incremented.Session TimePI計(jì)數(shù)器：pmSessionTimeUe： Unit: 1 sNumber of session seconds aggregated for UEs in a cell.A UE is said to be “in session” if any data on a DRB (UL or DL)has been transferred during the last 100 msp

39、mSessionTimeDrb：Unit: 1 sNumber of session seconds aggregated for DRBs in a cell.A DRB is said to be “in session” if any data on a DRB (UL or DL)has been transferred during the last 100 msPRB UtilizationPI計(jì)數(shù)器：pmPrbUtilDl：PDFA distribution that shows the downlink Physical Resource Block (PRB) pair ut

40、ilization (total number of used PRB pairs by available PRB pairs) on the Physical Downlink Shared Channel (PDSCH). pmPrbUtilUl：PDFA distribution that shows the uplink Physical Resource Block (PRB) pair utilization (total number of used PRB pairs by available PRB pairs) on the Physical Uplink Shared

41、Channel (PUSCH). Mp Load DistributionPIpmProcessorLoadDistrpmProcessorLoadDistr PDF ranges:0: 0 = Cpu Load 20 %1: 20 = Cpu Load 30 %2: 30 = Cpu Load 40 %3: 40 = Cpu Load 50 %4: 50 = Cpu Load 60 %5: 60 = Cpu Load 70 %6: 70 = Cpu Load 80 %7: 80 = Cpu Load 85 %8: 85 = Cpu Load 90 %9: 90 = Cpu Load 95 %

42、10:95 70% 調(diào)整PdcchCfiMode參數(shù)增加帶寬增加新站PUCCH資源利用率未調(diào)度的PUCCH分配請(qǐng)求比率(%)10% 參數(shù)優(yōu)化及一致性檢查添加新站PRB資源利用率 忙時(shí)PRB平均利用率60% 降低激活用戶數(shù)：業(yè)務(wù)均衡，新站建設(shè) 如果有可能，減低控制信道資源如果有可能，增加系統(tǒng)帶寬licenselicense資源資源RRC連接用戶數(shù)實(shí)際連接用戶數(shù)峰值/license用戶數(shù)70% 通過(guò)硬件升級(jí)，增加連接用戶數(shù)容量增加連接用戶數(shù)的license減少連接的用戶數(shù)，可以通過(guò)業(yè)務(wù)均衡，新站建設(shè)等設(shè)備資源設(shè)備資源基帶板CPU利用率 基帶板負(fù)荷70% 目前的硬件配置不會(huì)出現(xiàn)主處理器負(fù)荷過(guò)高問(wèn)題

43、Paging資源利用率 尋呼丟棄率5%對(duì)尋呼參數(shù)的一致性檢查（發(fā)送尋呼的數(shù)量以及計(jì)時(shí)器等）TA list的優(yōu)化傳傳輸資源輸資源 以太網(wǎng)口利用率 忙時(shí)傳輸利用率70%傳輸帶寬擴(kuò)容 預(yù)警門限：連接峰值用戶數(shù)/License用戶數(shù)70%硬件DUS 41，單站最大3600個(gè)用戶軟件license目前配置S111單站120，以20為步長(zhǎng)升級(jí)參數(shù)名稱參數(shù)解釋licenseCapacityConnectedUsersRRC連接用戶數(shù)的license限制數(shù)licConnectedUsersPercentileConfpmLicConnectedUsersActual的CDF取值統(tǒng)計(jì)名稱統(tǒng)計(jì)解釋pmLicCon

44、nectedUsersLicense可用的連接用戶數(shù)license數(shù)pmLicConnectedUsersActual在一個(gè)測(cè)量周期內(nèi)實(shí)際連接用戶比率pmLicConnectedUsersMax連接的峰值用戶數(shù)pmLicConnectedUsersTimeCong連接的用戶數(shù)達(dá)到license限制的累加時(shí)間pmRrcConnEstabFailLic因?yàn)槿鄙賚icense造成的RRC連接建立失敗次數(shù)愛(ài)立信LTE容量評(píng)估-RRC連接用戶數(shù) 增加連接用戶容量： 硬件升級(jí)；增加連接用戶license個(gè)數(shù) 減少連接的用戶數(shù)： 業(yè)務(wù)均衡；新站3939計(jì)數(shù)器:pmLicConnectedUsersActua

45、預(yù)警門限：不會(huì)出現(xiàn)容量限制硬件DUS 41，愛(ài)立信基帶板的PRACH處理能力充足，遠(yuǎn)超實(shí)際可能發(fā)生的PRACH業(yè)務(wù)量軟件無(wú)限制參數(shù)名稱參數(shù)解釋cellRange小區(qū)最大半徑rachRootSequence隨機(jī)接入前導(dǎo)序列cfraEnable非競(jìng)爭(zhēng)隨機(jī)接入開啟愛(ài)立信LTE容量評(píng)估-PRACH 對(duì)功控參數(shù)設(shè)置的檢查 對(duì)問(wèn)題站進(jìn)行上行干擾排查預(yù)警門限：pmPdcchCceUtil大于70%可用容量軟硬件無(wú)限制帶寬20M帶寬，PDCCH占三個(gè)符號(hào)時(shí)最多可用CCE數(shù)為84/子幀。目前采用動(dòng)態(tài)cfi設(shè)置，PDCCH最多占3個(gè)符號(hào)參數(shù)名稱參數(shù)解釋pdcchCfiMode控制CFI，目前使用最大值為3的動(dòng)態(tài)調(diào)

46、整方式統(tǒng)計(jì)名稱統(tǒng)計(jì)解釋pmPdcchCceUtilPDCCH CCE利用率pmContDlPdcch下行由于缺乏PDCCH資源而產(chǎn)生的競(jìng)爭(zhēng)的次數(shù)pmContUlPdcch上行由于缺乏PDCCH資源而產(chǎn)生的競(jìng)爭(zhēng)的次數(shù)pmPdcchCceActivityPDCCH占用1個(gè)或多個(gè)CCE的次數(shù)pmPdcchMaxCceAvail考慮天線和帶寬的條件下，CCE可用的總個(gè)數(shù)愛(ài)立信LTE容量評(píng)估-PDCCH 調(diào)整PdcchCfiMode參數(shù) 增加帶寬 增加新站預(yù)警門限：未調(diào)度的PUCCH分配請(qǐng)求比率(%)=SR和CQI未調(diào)度的次數(shù)/請(qǐng)求次數(shù)10%軟件無(wú)限制硬件DUS41 ，20M帶寬，最大SR用戶810，C

47、QI用戶880參數(shù)名稱參數(shù)解釋noOfPucchSrUsersPUCCH上可用的SR資源的個(gè)數(shù)，目前設(shè)置160noOfPucchCqiUsersPUCCH上可用的CQI資源的個(gè)數(shù)，目前設(shè)置160統(tǒng)計(jì)名稱統(tǒng)計(jì)解釋pmPucchSrCqiResAllocAttPUCCH分配的嘗試次數(shù)pmPucchSrCqiResCongCqiCQI資源請(qǐng)求未被調(diào)度的次數(shù)pmPucchSrCqiResCongSrSR資源請(qǐng)求未被調(diào)度的次數(shù)愛(ài)立信LTE容量評(píng)估-PUCCH 功率參數(shù)設(shè)置的一致性檢查 優(yōu)化NoOfPucchCqiUsers, NoOfPucchSrUsers 添加新站愛(ài)立信LTE容量評(píng)估-PRB資源硬件

48、無(wú)限制RB數(shù)20M帶寬，100RBcounter名稱解釋pmPrbUtilDl (PDF)下行PRB利用率PDF分布pmPrbUtilUl (PDF)上行PRB利用率PDF分布預(yù)警門限：忙時(shí)PRB平均利用率60%，結(jié)合單用戶下載速率*建議結(jié)合小區(qū)內(nèi)平均每用戶的throughput單用戶下行速率=測(cè)試時(shí)間內(nèi)下行PDCP流量/UE下行業(yè)務(wù)占用時(shí)間單用戶上行速率=測(cè)試時(shí)間內(nèi)上行PDCP流量/UE上行業(yè)務(wù)占用時(shí)間 降低激活的用戶數(shù)，比如業(yè)務(wù)均衡，建新站等 在控制信道容許的情況下，減少控制信道資源. 增加網(wǎng)絡(luò)帶寬eNodeB理論尋呼容量：1250 Paging / s , 尋呼丟棄率 5%硬件1250

49、Paging / s 配置目前配置600 Paging / s; 在作TA規(guī)劃時(shí)，綜合考慮各種因素后，通常按200/s規(guī)劃。基站CPU對(duì)尋呼能力的支持較大(1000/s)，通常不是瓶頸參數(shù)名稱參數(shù)解釋maxNoOfPagingRecords每PO上可承載的尋呼尋呼信息個(gè)數(shù)Nb每個(gè)尋呼幀中PO的個(gè)數(shù)pagingDiscardTimer尋呼信息緩存時(shí)長(zhǎng)統(tǒng)計(jì)名稱統(tǒng)計(jì)解釋pmPagDiscarded尋呼丟棄次數(shù)pmPagReceived收到的尋呼次數(shù)愛(ài)立信LTE容量評(píng)估-尋呼容量 對(duì)尋呼參數(shù)的一致性檢查（發(fā)送尋呼的數(shù)量以及計(jì)時(shí)器等） TA列表的優(yōu)化愛(ài)立信LTE容量評(píng)估-設(shè)備資源CPU負(fù)荷CPU負(fù)荷狀態(tài)

50、 98%過(guò)負(fù)荷 90% 98%超負(fù)荷 70% 89%高負(fù)荷 70%正常負(fù)荷統(tǒng)計(jì)名稱統(tǒng)計(jì)解釋pmProcessorLoadDistr CPU負(fù)荷分布硬件DUS41，目前的硬件配置不會(huì)出現(xiàn)主處理器負(fù)荷過(guò)高問(wèn)題 u 基帶板基帶板CPUCPU占用率：占用率：pmProcessorLoadDistrpmProcessorLoadDistr PDF ranges:0: 0 = Cpu Load 20 %1: 20 = Cpu Load 30 %2: 30 = Cpu Load 40 %3: 40 = Cpu Load 50 %4: 50 = Cpu Load 60 %5: 60 = Cpu Load 70

51、 %6: 70 = Cpu Load 80 %7: 80 = Cpu Load 85 %8: 85 = Cpu Load 90 %9: 90 = Cpu Load 95 %10:95 70%KPI公式：以太網(wǎng)傳輸利用率(%) =以太網(wǎng)流量/統(tǒng)計(jì)時(shí)間/以太網(wǎng)配置帶寬 傳輸擴(kuò)容指標(biāo)名稱指標(biāo)名稱主要影響哪些用戶感主要影響哪些用戶感受及網(wǎng)絡(luò)性能？（如受及網(wǎng)絡(luò)性能？（如網(wǎng)頁(yè)打開慢之類的）網(wǎng)頁(yè)打開慢之類的）主要由什么原因引起（如室分底噪是網(wǎng)絡(luò)主要由什么原因引起（如室分底噪是網(wǎng)絡(luò)元器件引起還是優(yōu)化不合理？宏站底噪高元器件引起還是優(yōu)化不合理？宏站底噪高呢？）呢？）當(dāng)前主要有哪些優(yōu)化手段提升這些指標(biāo)？當(dāng)前主要有

52、哪些優(yōu)化手段提升這些指標(biāo)？無(wú)線接通率有LTE信號(hào)，但無(wú)法上網(wǎng)1. 宏站底噪高2. RRC、E-RAB擁塞3. 連接用戶數(shù)限制4. 天饋系統(tǒng)問(wèn)題5. 覆蓋問(wèn)題6. 參數(shù)配置1. 排除內(nèi)、外部干擾2. 擴(kuò)容，業(yè)務(wù)分流3. 擴(kuò)lincese4. 檢查天饋系統(tǒng)問(wèn)題：駐波比、鴛鴦線等；5. RF優(yōu)化：重疊覆蓋、弱覆蓋、過(guò)覆蓋問(wèn)題解決；6. 參數(shù)優(yōu)化LTE業(yè)務(wù)掉線率上網(wǎng)時(shí)刷不出東西，看視頻掉線1. 覆蓋干擾問(wèn)題2. 天饋問(wèn)題3. 鄰區(qū)缺失4. 基站故障5、參數(shù)問(wèn)題1. RF優(yōu)化：重疊覆蓋、弱覆蓋、過(guò)覆蓋問(wèn)題解決；模3干擾解決；2. 檢查天饋系統(tǒng)問(wèn)題：駐波比、鴛鴦線等；3. 鄰區(qū)優(yōu)化；4. 檢查告警，排除基站故障5. PCI核查；LTE小區(qū)退服時(shí)長(zhǎng)手機(jī)無(wú)信號(hào)，無(wú)LTE覆蓋1. 基站故障2. 人為閉站1. 檢查告警，排除基站故障2. 檢查人為閉站原因用戶下行吞吐率視頻卡頓，游戲卡頓1. 覆蓋問(wèn)題2. 天饋問(wèn)題3. 參數(shù)問(wèn)題4. 容量問(wèn)題1. RF優(yōu)化：重疊覆蓋、弱覆蓋、過(guò)覆蓋問(wèn)題解決；2. 檢查天饋系統(tǒng)問(wèn)題3. 參數(shù)優(yōu)化4. 擴(kuò)容，資源優(yōu)化上行底噪無(wú)法接入，上行速率低1. 系統(tǒng)內(nèi)干擾2. 系統(tǒng)外干擾1.