LTE吞吐率優(yōu)化指導(dǎo)書.pdf (5.13 MB)【資料名稱】：LTE吞吐率優(yōu)化指導(dǎo)書

【資料作者】：dean

【資料日期】：2012-3

【資料語(yǔ)言】：中文

【資料格式】：PDF

【資料目錄和簡(jiǎn)介】：

目 錄
1 文檔描述 ............................................................................................................................................ 6
2 基本原理 ............................................................................................................................................ 6
2.1 基本概念 ...................................................................................................................................... 6
2.1.1 LTE關(guān)鍵技術(shù) ........................................................................................................................... 7
2.1.2 MIMO模式 ............................................................................................................................... 7
2.1.3 調(diào)制編碼方式 ............................................................................................錯(cuò)誤！未定義書簽。
2.2 時(shí)頻資源及各層吞吐量計(jì)算 .......................................................................................................... 8
2.2.1 LTE吞吐量理論計(jì)算 ................................................................................................................ 8
2.2.2 各觀察點(diǎn)吞吐量計(jì)算 ............................................................................................................... 8
3 定位指導(dǎo) ............................................................................................................................................ 9
3.1 數(shù)傳問(wèn)題定位思路 ......................................................................................................................... 9
3.1.1 下行數(shù)傳問(wèn)題定位流程 .......................................................................................................... 10
3.1.2 上行數(shù)傳問(wèn)題定位流程 .......................................................................................................... 12
3.2 數(shù)傳類問(wèn)題定位基本需求及工具使用介紹 ......................................................錯(cuò)誤！未定義書簽。
3.2.1 基本組網(wǎng)圖 ................................................................................................錯(cuò)誤！未定義書簽。
3.2.2 無(wú)線信道條件檢查 .....................................................................................錯(cuò)誤！未定義書簽。
3.2.3 用戶開(kāi)戶 ....................................................................................................錯(cuò)誤！未定義書簽。
3.2.4 其它環(huán)境配置及要求 .................................................................................錯(cuò)誤！未定義書簽。
3.3 下行數(shù)傳問(wèn)題定位動(dòng)作描述 ........................................................................................................ 12
3.3.1 無(wú)法數(shù)傳排查 ........................................................................................................................ 12
3.3.2 傳輸側(cè)問(wèn)題排查 ..................................................................................................................... 13
3.3.3 UE問(wèn)題排查和隔離 ................................................................................................................ 21
3.3.4 空口無(wú)線質(zhì)量排查 ................................................................................................................. 15
3.3.5 eNB側(cè)問(wèn)題排查 ..................................................................................................................... 14
3.3.6 TCP問(wèn)題排查 ........................................................................................................................ 21
3.3.7 問(wèn)題反饋 ............................................................................................................................... 26
3.4 上行數(shù)傳問(wèn)題定位動(dòng)作描述 ........................................................................................................ 27
3.4.1 上行空載干擾檢測(cè) ................................................................................................................. 27
3.4.2 上行UDP灌包 ............................................................................................錯(cuò)誤！未定義書簽。
3.4.3 檢查上行性能監(jiān)測(cè) .....................................................................................錯(cuò)誤！未定義書簽。
3.4.4 上行調(diào)度結(jié)果打印 .....................................................................................錯(cuò)誤！未定義書簽。
3.4.5 收集IFTS信息 ............................................................................................錯(cuò)誤！未定義書簽。
3.4.6 問(wèn)題反饋 ............................................................................................................................... 29