GSM话音质量优化技术指导手册v22

( 试 行 稿 )

版本号:3.0.0

2013年3月

中国移动通信集团四川公司网络优化中心

GSM话音质量优化

技术指导手册

目 录

1. 概述 ..................................................................................................................................... 4 2. 语音质量指标解析 ............................................................................................................. 4

2.1 指标定义 ........................................................................................................................................ 4 2.2 指标来源 ........................................................................................................................................ 4 2.3 影响环节 ........................................................................................................................................ 4 2.4 RXQUAL、C/I和BER之间对应关系 ............................................................................................ 5

3. 语音质量提升流程 ............................................................................................................. 5 4. 语音质量提升措施 ............................................................................................................. 6

4.1 网元故障 ........................................................................................................................................ 6 4.1.1 涉及网元 ................................................................................................................................ 6 4.1.2 问题判定 ................................................................................................................................ 7 4.1.3 处理手段 ................................................................................................................................ 7 4.2 延伸系统整治 ................................................................................................................................. 7 4.2.1 延伸系统 ................................................................................................................................ 7 4.2.2 问题判定 ................................................................................................................................ 8 4.2.3 处理手段 ................................................................................................................................ 8 4.3 覆盖优化 ........................................................................................................................................ 8 4.3.1 问题分类 ................................................................................................................................ 8 4.3.2 问题判定 ................................................................................................................................ 8 4.3.3 处理手段 ................................................................................................................................ 9 4.4 干扰排查 ..................................................................................................................................... 10 4.4.1 干扰分类 ............................................................................................................................. 10 4.4.2 问题判定 ............................................................................................................................. 10 4.4.3处理手段 .............................................................................................................................. 12 4.5 参数优化 ..................................................................................................................................... 13

4.5.1 重要参数 ............................................................................................................................. 14 4.5.2 设置策略 ............................................................................................................................. 14 4.6 终端问题 ..................................................................................................................................... 14 4.6.1 问题判定 ............................................................................................................................. 14 4.6.2 处理手段 ............................................................................................................................. 15 4.7 功能应用 ..................................................................................................................................... 15 4.7.1 跳频..................................................................................................................................... 15 4.7.2 下行非连续发射 ................................................................................................................... 15 4.7.3 上行非连续发射 ................................................................................................................... 15 4.7.4 PS下行功控功能 .................................................................................................................. 16 4.7.5 干扰消除合并 ...................................................................................................................... 16 4.7.6 IBCA功能 ............................................................................................................................ 16 4.7.7 新功控算法 .......................................................................................................................... 16

5. 附录 ................................................................................................... 错误!未定义书签。

5.1 引起质差的基站故障告警 ................................................................................. 错误!未定义书签。 5.2 延伸系统故障处理办法..................................................................................... 错误!未定义书签。 5.3 干扰分析 .......................................................................................................... 错误!未定义书签。 5.4 网络结构优化 ................................................................................................... 错误!未定义书签。 5.5 天馈系统互调问题排查方法 ............................................................................. 错误!未定义书签。

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