【資料名稱】：EVDO低速率優(yōu)化指導(dǎo)書

【資料作者】：111

【資料日期】：2010.01.01

【資料語(yǔ)言】：中文

【資料格式】：PDF

【資料目錄和簡(jiǎn)介】：

、概述........................................................................................................................................5
1.1 EVDO速率優(yōu)化經(jīng)驗(yàn)指標(biāo)...................................................................................................5
1.2 EVDO傳輸結(jié)構(gòu)..................................................................................................................5
1.3 總體優(yōu)化思想..................................................................................................................7
2、EVDO速率優(yōu)化思路....................................................................................................................7
2.1、檢測(cè)基站傳輸資源的配置情況.....................................................................................8
2.1.1、單載單扇DO基站的傳輸需求.............................................................................8
2.1.2、單載三扇DO基站的傳輸需求.............................................................................8
2.1.3、單載三扇DO與1X共站的傳輸需求.....................................................................8
2.1.4、傳輸資源緊缺情況下的傳輸配置建議：.........................................................8
2.2、空口優(yōu)化分析要點(diǎn).........................................................................................................8
2.2.1 前向速率優(yōu)化分析要點(diǎn).......................................................................................8
2.2.2 反向速率優(yōu)化分析要點(diǎn).....................................................................................15
2.3、RLP 層優(yōu)化分析要點(diǎn)...................................................................................................20
2.4、PPP 層優(yōu)化分析要點(diǎn)...................................................................................................20
2.5、TCP/IP 層優(yōu)化分析要點(diǎn).............................................................................................22
2.6、速率參數(shù)優(yōu)化分析要點(diǎn)...............................................................................................23
3、EVDO速率慢問題分析流程和定位方法...................................................................................30
3.1、EVDO速率慢問題分析流程...........................................................................................30
3.1.1前向鏈路數(shù)據(jù)速率問題排查流程圖...................................................................30
3.1.2反向鏈路數(shù)據(jù)速率問題排查流程圖...................................................................31
3.2、定位方法-排查系統(tǒng)有無故障.....................................................................................31
3.2.1、網(wǎng)管上有無明顯硬件故障...............................................................................31
案例1. 傳輸誤碼告警造成DO數(shù)據(jù)業(yè)務(wù)速率低...........................................................31
3.2.2、檢查時(shí)鐘是否同步？.......................................................................................33
3.2.3、跟蹤一下是RSSI、駐波比情況，看是否偏高或偏低。.............................33
案例2. 下洲3扇區(qū)---- 主集RSSI高...........................................................................