VOLTE優(yōu)化思路和重點V1

一、現(xiàn)網(wǎng)參數(shù)和指標(biāo)情況...........................................................................................................21.參數(shù)配置...............................................................................................................................22.道路測試指標(biāo).......................................................................................................................23.MR數(shù)據(jù)分析........................................................................................................................44.網(wǎng)管KPI指標(biāo).......................................................................................................................54.1接通率.............................................................................................................................54.2掉話率.............................................................................................................................54.3Esrvcc切換成功率.......................................................................................................6二、現(xiàn)網(wǎng)問題...............................................................................................................................71.道路問題...............................................................................................................................71.1弱覆蓋路段....................................................................................................................71.2覆蓋質(zhì)差路段................................................................................................................82.網(wǎng)管指標(biāo)問題.......................................................................................................................92.1MR覆蓋分析.................................................................................................................93.核心網(wǎng)和終端問題.............................................................................................................123.1各網(wǎng)元配合問題..........................................................................................................123.2終端問題.......................................................................................................................13三、指標(biāo)提升方案.....................................................................................................................141.道路指標(biāo).............................................................................................................................142.網(wǎng)管指標(biāo).............................................................................................................................153.用戶感知提升.....................................................................................................................154.優(yōu)化重點.............................................................................................................................154.1Esrvcc優(yōu)化............................................................................................................154.2 RTP包傳輸優(yōu)化 ....................................................................................................16一、 現(xiàn)網(wǎng)參數(shù)和指標(biāo)情況參數(shù)配置站點開啟Volte功能需以下動作：開啟功能開關(guān)、合理配置各類切換參數(shù)、配置GSM鄰區(qū)。核查市區(qū)現(xiàn)網(wǎng)站點功能性參數(shù)配置均無異常。參數(shù)類型參數(shù)級別參數(shù)縮寫推薦值市區(qū)基站數(shù)量現(xiàn)網(wǎng)配置不規(guī)范配置準(zhǔn)確率VoLTE功能性設(shè)置LNBTSactConvVoiceTRUE4650100.00%VoLTE功能性設(shè)置LNBTSactPdcpRohcTRUE4650100.00%VoLTE功能性設(shè)置LNBTSactERabModifyTRUE4650100.00%VoLTE功能性設(shè)置LNBTSactEnhAcAndGbrServicesTRUE4650100.00%VoLTE功能性設(shè)置LNBTSactmultGbrbearersTRUE4650100.00%VoLTE功能性設(shè)置LNBTSactMultBearersTRUE4650100.00%VoLTE功能性設(shè)置LNBTSmaxGbrDl2564650100.00%VoLTE功能性設(shè)置LNBTSmaxGbrUl2564650100.00%VoLTE功能性設(shè)置LNBTSqciSuppEnable4650100.00%VoLTE功能性設(shè)置LNCELLhysThreshold2GERAN04650100.00%VoLTE功能性設(shè)置LNCELLthreshold2GERAN304650100.00%VoLTE功能性設(shè)置SRVCCactSrvccToGsmTRUE4650100.00%核查市區(qū)現(xiàn)網(wǎng)配置 Esrvcc鄰區(qū)與GSM現(xiàn)網(wǎng)數(shù)據(jù)一致性，結(jié)果如下：市區(qū)站點ESRVCC鄰平均冗余數(shù)BCCH配置NCC配置BCC配置LAC配置鄰區(qū)個數(shù)ESRVCC鄰數(shù)量區(qū)數(shù)據(jù)錯誤錯誤錯誤錯誤少于10區(qū)數(shù)4621091124157590123819027道路測試指標(biāo)12月25日DT市區(qū)網(wǎng)格測試指標(biāo)VOLTE指標(biāo)類接通率

掉話率

呼叫建立時延

(s)

RTP丟包率100 1.92

3.4

0.31覆蓋類平均

RSRP邊緣

RSRPRSRP連續(xù)弱覆蓋里程占比

RSRP連續(xù)無覆蓋里程占比

連續(xù)

UE高發(fā)射功率里程占比-80.44

-91.8

0.34

0

0.18干擾

重疊覆蓋重疊覆蓋率

(重疊覆蓋度重疊覆蓋里程占比

(重疊覆蓋重疊覆蓋率

(重疊覆蓋度平均

SINR

邊緣

SINR

>=3)(%)

度>=3)(%)

>=4)(%)15.95 5.86

1.36

0.06

0.24網(wǎng)格內(nèi)道路RSRP情況：網(wǎng)格內(nèi)道路SINR情況：MR數(shù)據(jù)分析MR測量是TD-LTE系統(tǒng)的一項重要功能，測量上報結(jié)果除用于小區(qū)重選切換等事件的觸發(fā)，也可用于系統(tǒng)維護(hù)，評估網(wǎng)絡(luò)的運行狀態(tài)。字段 （參考信號接收功率）定義為承載小區(qū)專用參考信號 RE的功率線性平均值，是反映服務(wù)小區(qū)覆蓋的主要指標(biāo)。根據(jù)采樣點不同區(qū)間的分布可判斷小區(qū)的大致覆蓋情況，用于檢測盲點 /弱覆蓋區(qū)域。MR.RSRQ(參考信號接收質(zhì)量)可用于判斷下行參考信號的接收質(zhì)量，用于小區(qū)的重選切換判斷。根據(jù)MR統(tǒng)計來分析VOLTE用戶在LTE網(wǎng)絡(luò)的保持性能，判斷弱覆蓋情況下觸發(fā)SRVCC合理性設(shè)置有效手段。全網(wǎng)弱覆蓋比例以及MR.RSRP.XX的分布：覆蓋區(qū)域MR.RSRP弱覆蓋采樣MR.RSRP總采樣MR.RSRP弱覆蓋比例全網(wǎng)363472537257176427914.13%農(nóng)村276750311148439300418.64%城區(qū)宏站822484799805783918.39%城區(qū)微站41803371030356404.06%網(wǎng)管KPI指標(biāo)4.1接通率算法：E-RAB建立成功數(shù)/E-RAB建立請求數(shù)*RRC連接建立成功次數(shù)/RRC連接建立請