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1、《中國(guó)聯(lián)通WCDMA網(wǎng)絡(luò)基礎(chǔ)優(yōu)化》邊界類案例名稱:河北張興莊大街邊界優(yōu)化編號(hào):240311省市:天津市部門:網(wǎng)絡(luò)優(yōu)化撰寫人:孫晨耕日期:2015-8-21審核人:日期:Chinaunicomm國(guó)聯(lián)通目錄1.概述32.問題評(píng)估33.原因定位34.解決方案65.實(shí)施過程66.效果評(píng)佔(zhàn)67.遺留問題78.其他值得關(guān)注的關(guān)鍵問題71.概述根據(jù)DT測(cè)試數(shù)據(jù)發(fā)現(xiàn)在中興廠家與貝爾廠家邊界處,容易出現(xiàn)HSDPA掉線問題,通過進(jìn)一步的DT和測(cè)試分析,定位問題由于在radiolinkreconfigurationready消息中變更fDD-DL-ChannelisationCodeNumber不符合協(xié)議規(guī)范,
2、更改可能使得部分手機(jī)不能識(shí)別,導(dǎo)致部分于?機(jī)主小區(qū)變更時(shí)回radiobearerreconfigurationfailure(invalidconfiguration),致使DPA出現(xiàn)頻繁掉線。針對(duì)此問題,通過中興根據(jù)協(xié)議對(duì)變更信道碼消息流程的解釋和說明,制定具體的解決方案。2.問題評(píng)估數(shù)據(jù)源:calltrace數(shù)據(jù)和DT測(cè)試數(shù)據(jù)。問題評(píng)估方法:在中興邊界與貝爾邊界處,進(jìn)行DT測(cè)試,從占?用屮興基站的信號(hào)開始撥號(hào)連接,然后在邊界位置往返移動(dòng)中測(cè)試數(shù)據(jù)業(yè)務(wù),同吋RNC側(cè)記錄calltrace,針対掉線位置和信令分析原因。3?原因定位Calltrace分析:貝爾側(cè)為SRNC,Ue占用貝爾小區(qū),
3、建立HSDPA業(yè)務(wù),主小區(qū)山貝爾小區(qū)變更至中興小區(qū)時(shí)RNC卜?發(fā)radiobearerreconfiguration消息,ue回復(fù)radiobearerreconfigurationfailure(invalidconfiguration),導(dǎo)致掉線。如果DPA業(yè)務(wù)并發(fā)CS業(yè)務(wù),同時(shí)會(huì)產(chǎn)生掉話。*錢Q?▼0OE:117.2206037N:39.1764773Editing:NoneFreqi>BNodeBStateSearchIv/CDMA-xadQBzerReccr/igumorFR」▼
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