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1、 UNIVERSITY OF TECHNOLOGY毕业设计题 目 基于 EPON 技术的光纤到楼/户的小区宽带接入网的研究与设计摘摘 要要近年来，随着互联网的普及和快速发展，人们日益增长的通信需求对通信网络的交换和传输能力提出更高的要求，但骨干网传输速率和交换能力的提高使得接入网成了整个通信网络的瓶颈。当前 ADSL 是我国主流的宽带接入技术，主要提供普通上网业务，网吧业务，视频会议和企业专线业务，但随着 IPTV 和 VOD 等新型业务的发展，对接入承载网提出了很高的要求，而当前主流的 ADSL 带宽已远远不能满足需要，因此具有高带宽和高稳定性等优点的光纤到户技术的发展和应用成为了大势所趋。
2、本设计针对光纤到户接入技术主要进行了以下几方面工作：一 通过对 FTTH 概念的介绍,详细分析了包括多业务传送平台系统，点到点以太网系统以及无源光网络技术，通过对以上光纤到户实现技术的对比，得出了各种技术的优缺点及适用场合。二 本设计阐述了光纤到户接入实现的主要手段 PON,并对 PON 的基本结构和分类进行了分析。通过对几种接入技术的比较，得出了目前 EPON 是最为适合我国的国情,并且能在我国得到大力发展的接入技术。三 重点介绍了 EPON 系统的参考结构、复用原理、协议栈、帧结构及对外接口，为基于 EPON 的 FTTH 光纤到户接入的建设提供了理论上的支撑。四 结合光纤到户接入技术和
3、EPON 原理，以及工程建设的相关要求、原则。本设计介绍了 A 小区光纤到户建设的实例。关键词关键词：无源光网络；EPON；FTTH； AbstractIn recent years, the development of internet is becoming more and more popular and the faster. Peoples growing demand for communications of switching and transmission are asking for higher requirements, but the backbone tran
4、smission rate and the exchange of capabilities makes the access network has become the bottleneck of communication network. ADSL is currently the mainstream of broadband access technology in China, mainly provide general Internet services, Internet services, video conferencing and enterprise private
5、 line services, But as IPTV and VOD and other new business development, accessing to a very high network load demands, and the current mainstream way of ADSL access bandwidth can not meet the needs, and therefore with high bandwidth and high stability of the advantages of FTTH(Fiber To The Home) FTT
6、H technology development and application is becoming the trend.In this paper, FTTH access technology mainly carrys out with the following aspects.First, through the introduction of the concept of FTTH, including a detailed analysis of multi-service transport platform,point to point Ethernet passive
7、optical network systems and passive optical network technology, through the above comparison of FTTH implementation techniques, obtained a variety of techniques advantages and disadvantages, and for occasions.Second, his paper describes the main FTTH access to achieve PON (Passive Optical Network),
8、and PONs basic structure,classification were analyzed.Through several PON access technology comparison, the current EPON is the most suitable for China, and can be strong in the development of Chinas FTTH access technology.Third, focus on the EPON system reference architecture,multiplexing principle
9、s, protocol stack, the frame structure and external interface, providing the theoretical support for EPON-based FTTH construction.Fourth, the combination of FTTH access technology, EPON principles, and FTTH construction-related requirements, this paper describes A the construction of residential fib
10、er to the home as an example.Keywords: PON;FTTH;EPON;目目 录录摘 要.I Abstract.II 第 1 章 绪论.1 1.1 FTTH 的研究背景.1 1.2 FTTH 技术发展的现状.1 1.3 FTTH 技术的发展前景.2 第 2 章 PON 技术的研究.3 2.1 PON 的定义.3 2.2 PON 的基本结构.3 2.3 PON 的分类.3 2.4 几种 PON 接入技术的比较.5 2.5 PON 的应用环境与发展趋势.6 2.6 EPON 的参考结构.6 2.7 EPON 的复用原理.8 2.8 EPON 的协议栈.9 2.9 EPON 的帧结构.10 2.10 EPON 的对外接口.
