【資料名稱】：切換優(yōu)化指導書

【資料作者】：PT

【資料日期】：07-09

【資料語言】：中文

【資料格式】：DOC

【資料目錄和簡介】：

目錄
1. 概述...........................................................................................................................................6
1.1 文檔目的...........................................................................................................................6
1.2 文檔讀者...........................................................................................................................6
2. TD-SCDMA系統(tǒng)切換原理簡介.............................................................................................6
2.1 概述...................................................................................................................................6
2.2 切換流程...........................................................................................................................7
2.2.1 RNC內硬切換...........................................................................................................7
2.2.2 RNC間重定位.........................................................................................................10
2.2.3 RNC內接力切換.....................................................................................................13
3. 切換參數優(yōu)化.........................................................................................................................16
3.1 概述.................................................................................................................................16
3.2 切換測量類參數.............................................................................................................17
3.2.1 事件1G滯后門限...................................................................................................17
3.2.2 事件1G觸發(fā)時間...................................................................................................17
3.2.3 事件2A滯后門限...................................................................................................18
3.2.4 事件2A觸發(fā)時間...................................................................................................18
3.2.5 濾波因子.................................................................................................................19
3.2.6 獨立測量值偏移.....................................................................................................19
3.3 切換判決類參數.............................................................................................................20
3.3.1 源小區(qū)同頻切換絕對門限.....................................................................................20
3.3.2 目標小區(qū)同頻切換絕對門限.................................................................................21
3.3.3 源小區(qū)異頻切換絕對門限.....................................................................................21
3.3.4 目標小區(qū)異頻切換絕對門限.................................................................................21
3.4 其它參數：.....................................................................................................................22
4. 切換類KPI.............................................................................................................................23
4.1 RNC內硬切換成功率.....................................................................................................23
4.1.1 意義.........................................................................................................................23
4.1.2 定義.........................................................................................................................23
4.1.3 計數器說明（針對UtranCell統(tǒng)計）：...................................................................24
4.2 RNC間重定位成功率：.................................................................................................25
4.2.1 意義：.....................................................................................................................25
4.2.2 定義：.....................................................................................................................25
4.2.3 計數器說明：.........................................................................................................27
4.3 RNC內接力切換成功率.................................................................................................28
4.3.1 意義.........................................................................................................................28
4.3.2 定義.........................................................................................................................28
4.3.3 計數器說明（針對UtranCell統(tǒng)計）：...................................................................28
4.4 系統(tǒng)間CS域切換成功率（TD-SCDMA->GSM）.......................................................29
4.4.1 意義.........................................................................................................................29
4.4.2 定義.........................................................................................................................29
4.4.3 計數器說明.............................................................................................................30
4.5 系統(tǒng)間PS域切換成功率（TD-SCDMA->GPRS，UTRAN發(fā)起）............................31
4.5.1 意義.........................................................................................................................31
4.5.2 定義.........................................................................................................................31
4.5.3 計數器說明.............................................................................................................32
4.6 系統(tǒng)間PS域切換成功率（GPRS->TD-SCDMA）......................................................32
4.6.1 意義.........................................................................................................................32
4.6.2 定義.........................................................................................................................32
4.6.3 計數器說明.............................................................................................................33
5. 常見切換問題.........................................................................................................................34
5.1 概述.................................................................................................................................34
5.2 漏配鄰區(qū).........................................................................................................................35
5.3 導頻污染.........................................................................................................................36
5.4 切換參數設置不合理.....................................................................................................37
5.5 上行同步問題導致切換失敗.........................................................................................37
5.6 下行干擾導致切換失敗.................................................................................................37
5.7 孤島效應.........................................................................................................................37
5.8 乒乓切換.........................................................................................................................38
5.9 拐角效應.........................................................................................................................38
5.10 硬件故障.....................................................................................................................39
6. 案例.........................................................................................................................................39
6.1 漏配鄰區(qū).........................................................................................................................39
6.2 切換參數設置.................................................................................................................40