【正文】 ........................................................................... 3 覆蓋率 ................................................................................................................. 3 PCCPCH RSCP 覆蓋率 ....................................................................................... 3 PCCPCH C/I 覆蓋率 ........................................................................................... 4 TxPower 覆蓋率 .................................................................................................. 4 BLER 覆蓋率 ....................................................................................................... 4 第三章 掉話分析流程及方法 .......................................................................................... 5 路測掉話定義 ..................................................................................................... 5 常見掉話原因 ..................................................................................................... 5 掉話原因判決樹 ................................................................................................. 7 第四章 TDSCDMA 網(wǎng)絡(luò)覆蓋優(yōu)化 ............................................................................... 9 覆蓋空洞 ............................................................................................................. 9 弱覆蓋 ................................................................................................................. 9 越區(qū)覆蓋 ........................................................................................................... 12 孤島效應(yīng) ........................................................................................................... 13 第五章 干擾與切換區(qū)域覆蓋優(yōu)化 ................................................................................ 14 干擾優(yōu)化 ........................................................................................................... 14 切換區(qū)域覆蓋優(yōu)化 ........................................................................................... 16 第六章 TDSCDMA 導(dǎo)頻污染分析 ............................................................................. 20 導(dǎo)頻污染定義 ................................................................................................... 20 導(dǎo)頻污染的原因 ............................................................................................... 21 導(dǎo)頻污染優(yōu)化 ................................................................................................... 22 導(dǎo)頻污染案例 ................................................................................................... 23 總結(jié) .................................................................................................................................. 25 參考文獻(xiàn) .......................................................................................................................... 26 致謝 .................................................................................................................................. 27 董金強(qiáng)： TDSCDMA 網(wǎng)絡(luò)覆蓋優(yōu)化 II 插圖清單 圖 31 掉話分析判決樹 ..................................................................................................... 8 圖 41 調(diào)整前 RSCP 圖 ................................................................................................... 10 圖 42 調(diào)整前 C/I 圖 ........................................................................................................ 11 圖 43 調(diào)整后 RSCP 圖 .................................................................................................. 12 圖 44 調(diào)整后 C/I 圖 ....................................................................................................... 12 圖 51 同頻干擾 ............................................................................................................... 15 圖 52 鄰區(qū)漏配路測圖 .................................................................................................. 17 圖 53 Tdplaning 2/3G 工參圖 ....................................................................................... 19 圖 61 導(dǎo)頻污染優(yōu)化前路測圖 ....................................................................................... 23 圖 62 導(dǎo)頻污染優(yōu)化后路測圖 ....................................................................................... 24 銅陵學(xué)院畢業(yè)設(shè)計(jì) III 摘 要 目前，由于移動(dòng)、電信、聯(lián)通三大運(yùn)營商相互之間的競爭日趨激烈，以及用戶對(duì)自己周邊信號(hào)覆蓋的要求和信號(hào) 的質(zhì)量要求不斷提高，現(xiàn)網(wǎng)的大面積廣覆蓋已經(jīng)無法滿足用戶的要求。用戶希望網(wǎng)絡(luò)品質(zhì)不是阻礙溝通的障礙，希望他們的手機(jī)終端在任何地方都可以使用達(dá)到“無縫覆蓋”，包括建筑物內(nèi)、鐵路、公路等。 不論是在 2G 還是 3G 甚至即將到來的 4G（ LTE）網(wǎng)絡(luò)覆蓋優(yōu)化都是少不了的， 3G 是跨越到 LTE 的一個(gè)過程。 本文通過對(duì) TDSCDMA 網(wǎng)絡(luò)經(jīng)過測試后所得的參數(shù)指標(biāo)來分析網(wǎng)絡(luò)覆蓋問題，其中包括由于弱覆蓋、越區(qū)覆蓋、孤島效應(yīng)、鄰區(qū)配置、導(dǎo)頻污染、系統(tǒng)干擾等原因引起的問題，并結(jié)合覆蓋優(yōu)化實(shí)際案例，給出了分析思路，介紹了處理覆蓋問題的一般流程和典型解決方法。 關(guān)鍵詞： TDSCDMA；覆蓋；網(wǎng)絡(luò)優(yōu)化工程師； 董金強(qiáng)： TDSCDMA 網(wǎng)絡(luò)覆蓋優(yōu)化 IV Abstract Currently, Mobile, China Tele, China Uni three operators increasingly fierce petition between and surrounding signal coverage requirements and signal quality requirements continue to increase, the wide coverage of a large area of the existing work has been unable to meet user requirements. Users want to work quality than hinder munication barriers, their mobile terminal can be used anywhere to achieve seamless coverage, including the building, railways, highways and other. Therefore, 3G wireless work in the initial stage of construction on the coverage of the target proposed high demands. Whether 2G or 3G or uping 4G (LTE) work coverage optimization are unavoidable, 3G across a process to LTE. Coverage optimization for cities and other densely populated urban areas gradually approaching perfect for rural and highway coverage optimization will also be better protected, so you can bring great convenience to people39。 TDSCDMA 方案是在 1998 年 6 月由中國提交到 ITU(國際電聯(lián)