【資料名稱】：華為切換成功率優(yōu)化指導(dǎo)書

【資料作者】：華為

【資料日期】：2010-7-24

【資料語言】：中文

【資料格式】：PDF

【資料目錄和簡介】：

1 基本原理................................................................................................................... 4
1.1 指標(biāo)含義 ........................................................................................................ 4
1.2 理論介紹 ........................................................................................................ 4
1.3 推薦公式 ........................................................................................................ 4
1.4 信令流程及統(tǒng)計(jì)點(diǎn) .......................................................................................... 5
2 影響切換成功率的因素.............................................................................................. 8
3 切換成功率分析流程和優(yōu)化措施................................................................................ 8
3.1 切換問題的分析流程 ....................................................................................... 8
3.1.1 通用切換問題定位流程 ............................................................................. 8
3.2 切換問題的優(yōu)化方法介紹 .............................................................................. 10
3.2.1 切換問題分類 ......................................................................................... 10
3.2.2 硬件和傳輸故障 ..................................................................................... 11
3.2.3 數(shù)據(jù)配置不當(dāng) ......................................................................................... 13
3.2.4 目標(biāo)小區(qū)擁塞 ......................................................................................... 15
3.2.5 時(shí)鐘問題 ................................................................................................ 16
3.2.6 干擾問題 ................................................................................................ 17
3.2.7 覆蓋問題及上下行平衡 ........................................................................... 18
3.2.8 BSC 間/MSC 間切換失敗 ...................................................................... 19
3.2.9 自動鄰區(qū)優(yōu)化 ......................................................................................... 20
3.2.10 測試工具選擇及測試建議 ....................................................................... 21
3.2.11 現(xiàn)網(wǎng)測試配置建議 .................................................................................. 21
4 切換成功率優(yōu)化案例 ............................................................................................... 22
4.1 解不出BSIC碼無法切換案例 ........................................................................ 22
4.2 MS和BSC對頻點(diǎn)排序不一致導(dǎo)致無法切換案例........................................... 22
4.3 參數(shù)配置不合理導(dǎo)致無法切換案例 ................................................................ 22
4.4 Handover Request如果不包含類標(biāo)3，導(dǎo)致BSC入切換失敗次數(shù)增加案例 ..... 22
4.5 A接口階段標(biāo)志配置錯(cuò)誤導(dǎo)致入BSC切換失敗 ............................................. 23
4.6 打開空閑burst導(dǎo)致干擾增大接收質(zhì)量下降切換成功率低............................... 23
4.7 不同交換機(jī)下發(fā)清除命令攜帶原因值不同導(dǎo)致切換成功率差異 ...................... 23
5 問題信息反饋.......................................................................................................... 24
5.1 反饋問題小區(qū)的TEMS測試log .................................................................... 24
5.2 現(xiàn)網(wǎng)配置數(shù)據(jù)以及話統(tǒng)反饋要求 ................................................................... 24