【資料名稱】：愛立信GPRS網(wǎng)絡(luò)評估

【資料作者】：ericsson

【資料日期】：2011-7-1

【資料語言】：中文

【資料格式】：DOC

【資料目錄和簡介】：

1 引言.......................................................................................................................................................................4
1.1 GPRS網(wǎng)絡(luò)優(yōu)化的引入.....................................................................................................................................4
1.2 GPRS核心網(wǎng)絡(luò)優(yōu)化主要內(nèi)容..........................................................................................................................4
1.3 GPRS無線網(wǎng)絡(luò)優(yōu)化主要內(nèi)容..........................................................................................................................4
1.4 GPRS網(wǎng)絡(luò)優(yōu)化方法.........................................................................................................................................5
2 愛GPRS立信重要性能指標(biāo).................................................................................................................................7
2.1 GPRS核心網(wǎng)絡(luò)重要性能指標(biāo)..........................................................................................................................7
2.1.1 平均附著用戶數(shù)......................................................................................................................................7
2.1.2 GPRS附著成功率....................................................................................................................................7
2.1.3 SGSN內(nèi)路由區(qū)更新成功率......................................................................................................................9
2.1.4 SGSN間路由區(qū)更新成功率....................................................................................................................10
2.1.5 路由區(qū)更新成功率................................................................................................................................12
2.1.6 PDP激活的上下文激活用戶數(shù)..............................................................................................................13
2.1.7 PDP上下文激活成功率.........................................................................................................................13
2.1.8 分組尋呼成功率....................................................................................................................................15
2.1.9 SGSN Gb 上行流量................................................................................................................................17
2.1.10 SGSN Gb 下行流量............................................................................................................................17
2.1.11 GGSN Gi 上行流量............................................................................................................................18
2.1.12 GGSN Gi 下行流量............................................................................................................................18
2.2 GPRS無線網(wǎng)絡(luò)重要性能指標(biāo)........................................................................................................................18
2.2.1 分組業(yè)務(wù)隨機(jī)接入................................................................................................................................18
2.2.2 PDCH分配嘗試次數(shù)..............................................................................................................................19
2.2.3 PDCH分配失敗率.................................................................................................................................19
2.2.4 PCUPDCH引起的分配失敗次數(shù)...........................................................................................................19
2.2.5 PDCH預(yù)清空次數(shù).................................................................................................................................19
2.2.6 PDCH小區(qū)中平均分配個數(shù)..................................................................................................................20
2.2.7 PDCH(ALLPDCHACTACC)小區(qū)中平均激活個數(shù)...............................................................................20
2.2.8 PDCH激活個數(shù)峰值..............................................................................................................................20
2.2.9 RLC層下行數(shù)據(jù)包重傳率......................................................................................................................20
2.2.10 RLC層上行數(shù)據(jù)包重傳率..................................................................................................................21
2.2.11 PCU丟棄的下行幀幀數(shù).....................................................................................................................21
2.2.12 PCU丟棄的上行幀幀數(shù).....................................................................................................................21
2.2.13 分組尋呼次數(shù)....................................................................................................................................22
3 GPRS愛立信網(wǎng)絡(luò)參數(shù)調(diào)整...............................................................................................................................23
3.1 NS控制層........................................................................................................................................................23
3.1.1 NSVC Block/UnBlock周期......................................................................................................................23
3.1.2 NSVC復(fù)位周期定時器...........................................................................................................................23
3.1.3 NSVC復(fù)位過程定時器...........................................................................................................................23
3.1.4 NSVC測試定時器..................................................................................................................................23
3.1.5 FrameRelay數(shù)據(jù)包通過網(wǎng)的時間..........................................................................................................24
3.1.6 NS控制層參數(shù)列表................................................................................................................................24
3.2 BSSGP 層........................................................................................................................................................24
3.2.1 流量控制消息定時器.............................................................................................................................24
3.2.2 BVC復(fù)位控制定時器..............................................................................................................................25
3.2.3 BVC復(fù)位定時器.....................................................................................................................................25
3.2.4 BSSGP層參數(shù)列表................................................................................................................................26
3.3 SNDCP層........................................................................................................................................................26
3.3.1 延遲級別權(quán)重........................................................................................................................................26
3.3.2 吞吐量級別權(quán)重....................................................................................................................................26
3.3.3 1234PDU延時級別為，，，的保持時間.............................................................................................27
3.3.4 PDP上下文包隊列長度.........................................................................................................................27
3.3.5 SNDCP層參數(shù)列表................................................................................................................................28
3.4 GMM層...........................................................................................................................................................28
3.4.1 移動可達(dá)定時器....................................................................................................................................28
3.4.2 READY定時器........................................................................................................................................29
3.4.3 SNDCP層參數(shù)列表................................................................................................................................29
3.5 計費.................................................................................................................................................................29
3.5.1 PDP上下文數(shù)據(jù)閾值.............................................................................................................................29
3.5.2 CDR產(chǎn)生時間........................................................................................................................................30
3.5.3 CDR緩沖輸出時間................................................................................................................................30
3.5.4 計費參數(shù)列表........................................................................................................................................30
3.6 GN接口參數(shù)....................................................................................................................................................31
3.6.1 GTP建立請求響應(yīng)時間..........................................................................................................................31
3.6.2 GTP建立請求次數(shù).................................................................................................................................31
3.6.3 GTP更新請求響應(yīng)時間..........................................................................................................................31
3.6.4 GTP更新請求次數(shù).................................................................................................................................32
3.6.5 GTP刪除響應(yīng)時間.................................................................................................................................32
3.6.6 GTP刪除請求次數(shù).................................................................................................................................32
3.6.7 GTP識別響應(yīng)時間.................................................................................................................................32
3.6.8 GTP識別請求次數(shù).................................................................................................................................33
3.6.9 SGSN上下文請求響應(yīng)時間....................................................................................................................33
3.6.10 SGSN上下文請求次數(shù).......................................................................................................................33
3.6.11 Gn接口參數(shù)列表...............................................................................................................................33
3.7 無線部分參數(shù).................................................................................................................................................34
3.7.1 網(wǎng)絡(luò)運行模式........................................................................................................................................34
3.7.2 GPH動態(tài)設(shè)備保留數(shù).............................................................................................................................34
3.7.3 GPRS優(yōu)先級..........................................................................................................................................35
3.7.4 PDCH空閑時鐘.....................................................................................................................................35
3.7.5 編碼方式................................................................................................................................................35
3.7.6 TBF下行共享限制.................................................................................................................................35
3.7.7 TBF上行共享限制.................................................................................................................................36
3.7.8 MS功率減少等級...................................................................................................................................36
3.7.9 BTS預(yù)期接收信號強度...........................................................................................................................36
3.7.10 PDCH專有數(shù)量.................................................................................................................................37
3.7.11 PDCHALLOC....................................................................................................................................37
3.7.12 無線部分參數(shù)列表.............................................................................................................................37
4 常見問題分析.....................................................................................................................................................38
4.1 GPRS附著失敗...............................................................................................................................................38
4.1.1 GPRS附著請求被拒絕的原因................................................................................................................38
4.1.2 MSGPRS在側(cè)造成附著失敗的情況......................................................................................................38
4.1.3 GPRS在網(wǎng)絡(luò)側(cè)造成附著失敗情況........................................................................................................39
4.1.4 GPRS解決附著失敗的方法....................................................................................................................40
4.2 PDP上下文激活失敗......................................................................................................................................40
4.2.1 MSPDP發(fā)起的上下文激活失敗的原因................................................................................................40
4.2.2 PDP網(wǎng)絡(luò)發(fā)起上下文去激活的原因......................................................................................................40
4.2.3 PDP常見的上下文激活失敗原因..........................................................................................................41
4.2.4 PDP解決上下文激活失敗問題的建議..................................................................................................41
4.3 無線部分.........................................................................................................................................................41
4.3.1 PING丟包率較高...................................................................................................................................41
4.3.2 RLC層速率低.........................................................................................................................................41