【正文】 when existing business low efficiency, plex configuration, and flexibility and expansibility difference is difficult to meet the disadvantages of the practical needs. Transmission and need to be flexible, efficient and low cost the grouping of platform to realize the transfer business unified carrying and network integration, so packet transmission network (PTN) technology application and life. PTN Packet transmission Network (Packet Transport Network, PTN) not only keep the traditional SDH (Synchronous Digital Hierarch, Synchronous Digital system) transmission Network advantages, but also increased the data to the nature of the business, such as Packet switching, multiplexing, using connectionoriented label switching, etc. These characteristics make PTN has the very strong transmit ability, can is applicable to different business needs, to bee the global hot topic. At present in the state PTN standardization, each manufacturer has launched the corresponding PTN equipment, each big operators also began to product testing, and even began to establish PTN network. For this, we follow the trend of The Times, this paper introduced prehensively PTN key technology system, application scenarios, network positioning and deployment strategy, and so on. Finally, based on the current situation of xining city uni network and mobile, broadband, big customers three business network load demand, analysis of xining uni intracity networks are currently facing pressure, and then discusses PTN technology in xining local transmission network construction necessity and the construction of xining uni intracity networks network scheme. Key words: Packet transmission network metropolitan area transport nets PTN TMPLS IP SDH 目 錄緒論……………………………………………………………………11分組傳送網(wǎng)（PTN）概述………………………………………… 3 PTN技術(shù)簡(jiǎn)介……………………………………………………3 PTN技術(shù)的原理…………………………………………………3 PTN技術(shù)特點(diǎn)與形態(tài)……………………………………………3 PTN與SDH區(qū)別…………………………………………………4 PTN的體系構(gòu)架和網(wǎng)絡(luò)功能平面………………………………4 PTN關(guān)鍵技術(shù)……………………………………………………5 OAM技術(shù)………………………………………………………5 PTN網(wǎng)絡(luò)的生存性技術(shù)………………………………………6 PTN網(wǎng)絡(luò)的全業(yè)務(wù)提供技術(shù)…………………………………62 PTN網(wǎng)絡(luò)層次定位與網(wǎng)絡(luò)應(yīng)用場(chǎng)景分析…………………………7 PTN網(wǎng)絡(luò)層次定位………………………………………………7 基于對(duì)城域網(wǎng)網(wǎng)絡(luò)應(yīng)用場(chǎng)景分析………………………………7 PTN網(wǎng)絡(luò)的組建及組網(wǎng)模式……………………………………11 PTN的組網(wǎng)模式………………………………………………11 PTN的組網(wǎng)結(jié)構(gòu)………………………………………………11 PTN組網(wǎng)方案…………………………………………………12 PTN發(fā)展現(xiàn)狀……………………………………………………143 西寧聯(lián)通3G城域網(wǎng)PTN組網(wǎng)應(yīng)用 ………………………………15 ……………………………15 3G城域網(wǎng)對(duì)分組業(yè)務(wù)的需求 ………………………………15 西寧聯(lián)通3G城域網(wǎng)現(xiàn)狀及架構(gòu) ……………………………16 …………………………………16 ……………………………17 ………………………………………………………17 ………………………………………………………18 ……………………………………18 ………………………………………………………19 …………………………………………………21 ……………………………………224 結(jié)論…………………………………………………………………23參考文獻(xiàn)………………………………………………………………24附錄……………………………………………………………………25致謝……………………………………………………………………26緒論P(yáng)TN技術(shù)產(chǎn)生背景經(jīng)過(guò)多年的建設(shè)和優(yōu)化，以SDH/MSTP技術(shù)為基礎(chǔ)的中國(guó)移動(dòng)城域傳送網(wǎng)已經(jīng)較好地滿足了基于TDM的語(yǔ)音業(yè)務(wù)和少量數(shù)據(jù)業(yè)務(wù)的傳送需求，但3G和全業(yè)務(wù)運(yùn)營(yíng)的來(lái)臨，使基于I P的數(shù)據(jù)業(yè)務(wù)成為城域網(wǎng)傳送的主體。為此，我們緊跟時(shí)代潮流，本論文系統(tǒng)全面介紹PTN關(guān)鍵技術(shù)，應(yīng)用場(chǎng)景，網(wǎng)絡(luò)定位和部署策略等。這些特征使得PTN具有很強(qiáng)的傳送能力,能夠很好地適用于不同業(yè)務(wù)的需求,從而成為了全球炙手可熱的話題。而傳輸網(wǎng)需要靈活，高效和低成本的分組傳送平臺(tái)來(lái)實(shí)現(xiàn)全業(yè)務(wù)統(tǒng)一承載和網(wǎng)絡(luò)融合，所以分組傳輸網(wǎng)（PTN)技術(shù)應(yīng)用而生。移動(dòng)網(wǎng)絡(luò)架構(gòu)從2G到3G后續(xù)向4G演進(jìn)，移動(dòng)網(wǎng)絡(luò)在向IP化，寬帶化發(fā)展的過(guò)程中對(duì)傳輸網(wǎng)提出了更高的要求。同意學(xué)校向國(guó)家有關(guān)部門(mén)或機(jī)構(gòu)送交論文的復(fù)印件和磁盤(pán)。畢業(yè)論文作者簽名： 簽字日期： 年 月 日畢業(yè)論文版權(quán)使用授權(quán)書(shū)本畢業(yè)論文作者完全了解 青海民族大學(xué) 有關(guān)保留、使用畢業(yè)論文的規(guī)定。青海民族大學(xué)畢業(yè)論文青海民族大學(xué)畢 業(yè) 論 文 （ 設(shè) 計(jì) ）論文題目： PTN（分組傳輸網(wǎng)）組網(wǎng)應(yīng)用 學(xué)生姓名： 學(xué)號(hào)： 指導(dǎo)教師： 職稱(chēng)： 院 系： 物理與電子信息工程學(xué)院 專(zhuān)業(yè)班級(jí)： 通信工程（1）班 二○一二年三月三十日 獨(dú)創(chuàng)性聲明本人聲明所呈交的畢業(yè)論文是本人在導(dǎo)師指導(dǎo)下進(jìn)行的理論學(xué)習(xí)、實(shí)習(xí)實(shí)踐以及研究所取得的成果，除了文中特別加以標(biāo)注和致謝之處外，論文中不包含其他人已經(jīng)發(fā)表或撰寫(xiě)過(guò)的研究成果，也不包含獲得 青海民族大學(xué) 或其他教育機(jī)構(gòu)的學(xué)位或證書(shū)而使用過(guò)的材料。與我一起探討、工作的同學(xué)對(duì)本論文所做的任何貢獻(xiàn)均已在論文中作了明確的說(shuō)明并表示了謝意。特授權(quán)青海民族大學(xué)可以將畢業(yè)論