【資料名稱】：GSM干擾分析

【資料作者】：GSM干擾分析

【資料日期】：2011

【資料語言】：中文

【資料格式】：DOC

【資料目錄和簡介】：

目錄
課程說明.......................................................................................................................................1
課程介紹.......................................................................................................................................1
課程目標.......................................................................................................................................1
相關資料.......................................................................................................................................1
第 1章概述...................................................................................................................................2
1.1 干擾對網(wǎng)絡的影響..................................................................................................................2
第 2章干擾源...............................................................................................................................3
2.1 干擾源分類.............................................................................................................................3
2.1.1 自然噪聲......................................................................................................................3
2.1.2 人為噪聲......................................................................................................................3
2.2 對移動通信有主要影響的干擾源............................................................................................4
第 3章干擾問題的發(fā)現(xiàn)................................................................................................................6
3.1 通過OMC話統(tǒng)發(fā)現(xiàn)干擾........................................................................................................6
3.2 OMC告警和用戶申告............................................................................................................8
3.3 通過路測發(fā)現(xiàn)干擾..................................................................................................................9
第 4章定位和排除干擾源...........................................................................................................10
4.1 干擾定位和排查建議步驟.....................................................................................................10
4.1.1 根據(jù)關鍵性能指標KPI 確定干擾小區(qū)...................................................................10
4.1.2 檢查OMC告警..........................................................................................................10
4.1.3 檢查頻率規(guī)劃.............................................................................................................10
4.1.4 檢查小區(qū)參數(shù)設置.....................................................................................................11
4.1.5 路測...........................................................................................................................11
4.1.6 干擾排除....................................................................................................................11
4.2 硬件故障定位和排除............................................................................................................11
4.2.1 天線性能下降.............................................................................................................12
4.2.2 天線或饋管進水.........................................................................................................13
4.2.3 天饋接頭故障.............................................................................................................13
4.2.4 天線接反....................................................................................................................14
4.2.5 基站跳線接錯.............................................................................................................15
4.2.6 TRX故障...................................................................................................................16
4.2.7 時鐘失鎖....................................................................................................................19
4.2.8 小結...........................................................................................................................20
4.3 網(wǎng)內干擾...............................................................................................................................20