華為WCDMA高培——掉話問題分析.pdf (826.4 KB)【資料名稱】：華為WCDMA高培——掉話問題分析

【資料作者】：。

【資料日期】：。

【資料語(yǔ)言】：中文

【資料格式】：PDF

【資料目錄和簡(jiǎn)介】：

1 概述..........................................................................................................................................8
2 掉話分類定義............................................................................................................................8
2.1 路測(cè)掉話定義......................................................................................................................8
2.2 話統(tǒng)指標(biāo).............................................................................................................................8
2.3 工具中的定義....................................................................................................................10
3 掉話分析流程及方法...............................................................................................................10
3.1 常見掉話原因....................................................................................................................10
3.1.1 鄰區(qū)漏配.....................................................................................................................10
3.1.2 覆蓋差.........................................................................................................................11
3.1.3 切換導(dǎo)致的掉話..........................................................................................................12
3.1.4 干擾導(dǎo)致的掉話..........................................................................................................12
3.1.5 流程交互失敗..............................................................................................................13
3.1.6 異常分析.....................................................................................................................13
3.2 路測(cè)數(shù)據(jù)分析流程.............................................................................................................14
3.3 話統(tǒng)數(shù)據(jù)分析流程.............................................................................................................16
3.4 跟蹤數(shù)據(jù)分析流程.............................................................................................................19
3.5 告警數(shù)據(jù)分析流程.............................................................................................................21
3.6 用戶投訴分析流程.............................................................................................................21
3.7 調(diào)整措施...........................................................................................................................23
3.7.1 工程參數(shù).....................................................................................................................23
3.7.2 小區(qū)參數(shù).....................................................................................................................23
4 典型掉話分析..........................................................................................................................29
4.1 鄰區(qū)漏配...........................................................................................................................29
4.1.1 現(xiàn)象和分析..................................................................................................................29
4.1.2 解決方法.....................................................................................................................30
4.2 覆蓋太差...........................................................................................................................30
4.2.1 現(xiàn)象和分析..................................................................................................................30
4.2.2 解決辦法.....................................................................................................................31
4.3 干擾過強(qiáng)...........................................................................................................................31
4.3.1 導(dǎo)頻污染.....................................................................................................................31
4.3.2 上行干擾導(dǎo)致的掉話...................................................................................................38
4.4 軟切換掉話.......................................................................................................................40
4.4.1 拐角效應(yīng).....................................................................................................................40
4.4.2 針尖效應(yīng).....................................................................................................................43
4.4.3 主導(dǎo)小區(qū)變化過快.......................................................................................................44
4.5 硬切換掉話.......................................................................................................................45
4.5.1 壓縮模式啟動(dòng)太遲.......................................................................................................45
4.6 系統(tǒng)間切換掉話................................................................................................................45
4.6.1 鄰區(qū)漏配導(dǎo)致掉話.......................................................................................................45
4.6.2 異系統(tǒng)鄰區(qū)配置過多導(dǎo)致掉話....................................................................................46
4.6.3 LAC配置錯(cuò)誤導(dǎo)致的掉話............................................................................................46
4.6.4 UE不報(bào)測(cè)量報(bào)告導(dǎo)致掉話..........................................................................................47
4.6.5 切換不及時(shí)導(dǎo)致掉話...................................................................................................48
4.6.6 物理信道重配置時(shí)發(fā)生最優(yōu)小區(qū)變更導(dǎo)致掉話...........................................................50
4.6.7 UE回切換失敗導(dǎo)致掉話..............................................................................................51
4.6.8 壓縮模式啟動(dòng)太遲.......................................................................................................52
4.7 設(shè)備異常掉話....................................................................................................................52
4.7.1 NodeB上行同步導(dǎo)致的掉話........................................................................................52
4.7.2 手機(jī)問題.....................................................................................................................53