【資料名稱】：CDMA網(wǎng)絡(luò)隱性問題專題優(yōu)化指導(dǎo)書（完整版）

【資料作者】：wumingshi

【資料日期】：2009 年2 月

【資料語言】：中文

【資料格式】：pdf

【資料目錄和簡介】：

目錄
1 概述............................................................................................... 6
2 隱性問題的發(fā)現(xiàn)............................................................................ 6
2.1 話務(wù)數(shù)據(jù)........................................................................................................ 6
2.2 告警數(shù)據(jù)........................................................................................................ 7
2.3 呼叫記錄數(shù)據(jù)................................................................................................. 8
2.4 DT/CQT 數(shù)據(jù)................................................................................................... 8
2.5 投訴數(shù)據(jù)........................................................................................................ 9
2.6 測試數(shù)據(jù)........................................................................................................ 9
3 隱性問題的排查............................................................................ 9
3.1 天饋系統(tǒng)........................................................................................................ 9
3.1.1 天饋硬件設(shè)備損壞..............................................10
3.1.2 天線阻擋......................................................10
3.1.3 天饋類型使用不當(dāng)..............................................10
3.1.4 天線參數(shù)不合理................................................11
3.1.5 天饋接反......................................................11
3.1.6 駐波比過大....................................................11
3.2 無線設(shè)備（朗訊）....................................................................................... 12
3.2.1 BTS 一般問題排查...............................................12
3.2.2 BTS 硬件問題排查...............................................16
3.2.3 MSC 側(cè)問題排查................................................23
3.3 無線設(shè)備（中興）....................................................................................... 24
3.3.1 一般問題排查..................................................24
3.3.2 BSC 硬件問題排查...............................................25
3.3.3 BTS 硬件問題排查...............................................31
3.4 無線設(shè)備（華為）....................................................................................... 34
3.4.1 BTS 一般問題排查...............................................34
3.4.2 BTS 硬件問題排查...............................................39
3.5 無線設(shè)備（摩托羅拉）............................................................................... 49
3.5.1 一般問題排查..................................................49
3.5.2 硬件問題排查..................................................50
3.6 室分系統(tǒng)與直放站....................................................................................... 50
3.6.1 常見問題排查及優(yōu)化處理流程....................................50
3.6.2 設(shè)備隱性故障排查..............................................51
3.6.3 上行底噪及上下行平衡問題排查及優(yōu)化............................51
3.6.4 鄰區(qū)問題排查及優(yōu)化............................................52
3.6.5 搜索窗參數(shù)問題排查及優(yōu)化......................................52
3.6.6 弱覆蓋問題排查及優(yōu)化..........................................53
3.6.7 導(dǎo)頻污染問題排查及優(yōu)化........................................53
3.6.8 直放站（非室分信源）設(shè)備問題排查及優(yōu)化........................54
3.7 無線環(huán)境...................................................................................................... 55
3.7.1 前期判斷......................................................56
3.7.2 定位階段......................................................58
3.7.3 干擾測試儀表..................................................59
4 常見問題及案例.......................................................................... 62
4.1 天饋系統(tǒng)...................................................................................................... 62
4.1.1 越區(qū)覆蓋導(dǎo)致掉話..............................................62
4.1.2 饋線被盜造成零話務(wù)............................................62
4.1.3 天線類型使用不當(dāng)導(dǎo)致話務(wù)低....................................63
4.1.4 扇區(qū)接反導(dǎo)致掉話..............................................63
4.1.5 駐波比過高....................................................64
4.1.6 天線參數(shù)不合理導(dǎo)致弱覆蓋......................................64
4.1.7 天線安裝位置不當(dāng)案例..........................................65
4.2 無線設(shè)備（朗訊）....................................................................................... 65
4.2.1 鎖相環(huán)失鎖導(dǎo)致的零話務(wù)小區(qū)處理................................65
4.2.2 饋線被盜造成的零話務(wù)..........................................66
4.2.3 設(shè)備吊死導(dǎo)致測不到PN..........................................67
4.2.4 濾波器故障造成基站不能正常運行................................67
4.2.5 蒼南瀆浦基站無話務(wù)案例........................................68
4.2.6 樂清虹橋瑤岙無話務(wù)案例........................................69
4.2.7 蒼南金鄉(xiāng)涼亭基站案例..........................................70
4.2.8 洞頭新城基站案例..............................................71
4.2.9 溫州九龍山路案例..............................................72
4.2.10 瑞安上望基站案例..............................................72
4.2.11 溫州雙嶼鞋都基站案例..........................................74
4.2.12 永嘉嶺頭鄉(xiāng)基站案例............................................75
4.2.13 永嘉甌北五星工業(yè)路案例........................................76
4.2.14 永嘉石柱案例..................................................77
4.3 無線設(shè)備（ZTE）......................................................................................... 79
4.3.1 配置數(shù)據(jù)問題..................................................79
4.3.2 參數(shù)的一致性問題..............................................79
4.3.3 CDMA 低功率告警故障問題........................................79
4.3.4 RMM 探測不到問題...............................................81
4.3.5 數(shù)據(jù)同步問題..................................................85
4.3.6 BSC 與MSC 間鏈路存在隱性故障導(dǎo)致呼叫建立成功率降低.............86
4.4 無線設(shè)備（華為）....................................................................................... 87
4.4.1 北辰劉招莊接入問題案例........................................87
4.4.2 寶坻高家莊信用社接入問題案例..................................88
4.4.3 BBU 側(cè)扇區(qū)之間光纖RX 接反......................................89
4.4.4 雙鴛鴦線導(dǎo)致物理鏈路可用但MLPPP 鏈路不可用....................90
4.4.5 CE License不足導(dǎo)致呼叫建立成功率下降問題......................91
4.4.6 基站忙時Abis 資源不足導(dǎo)致指配資源失敗.........................93
4.4.7 新加基站只能做主叫不能做被叫案例..............................94
4.4.8 主控時鐘板未插緊導(dǎo)致基站覆蓋異常案例..........................94
4.4.9 天線被誤拆除導(dǎo)致基站覆蓋范圍縮小案例..........................95
4.4.10 GPS 饋線接頭壞導(dǎo)致通話出現(xiàn)雜音案例.............................95
4.4.11 接地不良導(dǎo)致基站傳輸鏈路閃斷案例..............................96
4.4.12 天饋系統(tǒng)故障導(dǎo)致RSSI 峰值偏小，基站覆蓋收縮案例...............97
4.4.13 電源模塊故障導(dǎo)致基站升級后頻繁重啟案例........................97
4.4.14 GPS 天饋機柜側(cè)避雷器安裝故障導(dǎo)致基站啟動失敗案例...............98
4.4.15 FTP 屬性設(shè)置錯誤導(dǎo)致BTS 數(shù)據(jù)上載失敗案例.......................99
4.4.16 傳輸問題導(dǎo)致M2000性能數(shù)據(jù)丟失問題案例.......................100
4.4.17 異廠家PDSN時間戳錯誤導(dǎo)致A11-session-update 協(xié)商失敗案例.....100
4.4.18 PCF 與CE(NE40)協(xié)商參數(shù)不一致導(dǎo)致兩者間以太網(wǎng)鏈路不通案例.....101
4.5 無線設(shè)備（摩托羅拉）............................................................................. 101
4.5.1 BTS933 時鐘偏差問題（CSM）導(dǎo)致切換失敗率高....................101
4.5.2 CBSC1034 產(chǎn)生大量CFC6、16、52 問題............................102
4.5.3 BTS-534 異常CFC6/16 的問題處理................................104
4.5.4 BTS-1446 的1 扇區(qū)沒話務(wù)處理...................................105
4.6 無線設(shè)備（北電）..................................................................................... 106
4.6.1 煙臺基站傳輸不穩(wěn)定導(dǎo)致掉話高處理.............................106
4.6.2 寧波基站MC800BTS1188 案例....................................106
4.6.3 數(shù)據(jù)配置錯誤導(dǎo)致的切換失敗...................................107
4.6.4 CIU 吊死導(dǎo)致的呼叫建立失敗....................................107
4.6.5 資源不足導(dǎo)致的數(shù)據(jù)呼叫困難...................................108
4.6.6 SBS 的V2 與V5 數(shù)據(jù)庫不匹配導(dǎo)致的掉話率升高....................109
4.6.7 基站"No Extended Cell Support"計數(shù)較高造成阻塞率高...........109
4.6.8 設(shè)備吊死導(dǎo)致測不到PN.........................................110
4.6.9 基站呼叫成功率只有50％左右...................................111
4.6.10 呼叫成功率下滑...............................................112
4.6.11 大慶基站軟件不能成功裝載導(dǎo)致零話務(wù)處理.......................114
4.7 室分系統(tǒng)與直放站......................................................................................114
4.7.1 室內(nèi)分布系統(tǒng)反向增益調(diào)整不當(dāng)導(dǎo)致網(wǎng)內(nèi)干擾.....................114
4.7.2 室內(nèi)分布系統(tǒng)合路器故障.......................................117
4.7.3 室內(nèi)分布系統(tǒng)發(fā)射功率設(shè)置問題.................................117
4.7.4 室內(nèi)綜合覆蓋電源問題.........................................119
4.7.5 室外直放站鎖死造成用戶無法通話...............................120
4.7.6 直放站自激提高施主站底噪.....................................120
4.7.7 室內(nèi)分布與室外覆蓋載波配置不一致問題.........................121
4.7.8 鄰區(qū)漏配.....................................................121
4.8 無線環(huán)境.................................................................................................... 122
4.8.1 導(dǎo)頻污染.....................................................122
4.8.2 RSSI 過高....................................................123
4.8.3 手機屏蔽器干擾...............................................124
4.8.4 電視信號放大器干擾...........................................125
4.8.5 直放站干擾一.................................................127
4.8.6 直放站干擾二.................................................129
4.8.7 廣電系統(tǒng)干擾.................................................