毕设说明书(基于EPON技术的光纤到楼户的小区宽带接入网

UNIVERSITYOFTECHNOLOGY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学生姓名学号专业班级通信工程指导教师学院计算机与通信学院答辩日期2012年基于EPON技术的光纤到楼/户的小区宽带接入网的研究与设计FTTB/FTTHaccesstechnologyresearchanddesignbasedonEPONXxx理工大学毕业设计I摘要近年来�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。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�无源光网络�EPON�FTTH�理工大学毕业设计IIAbstractInrecentyears,thedevelopmentofinternetisbecomingmoreandmorepopularandthefaster.People'sgrowingdemandforcommunicationsofswitchingandtransmissionareaskingforhigherrequirements,butthebackbonetransmissionrateandtheexchangeofcapabilitiesmakestheaccessnetworkhasbecomethebottleneckofcommunicationnetwork.ADSLiscurrentlythemainstreamofbroadbandaccesstechnologyinChina,mainlyprovidegeneralInternetservices,Internetservices,videoconferencingandenterpriseprivatelineservices,ButasIPTVandVODandothernewbusinessdevelopment,accessingtoaveryhighnetworkloaddemands,andthecurrentmainstreamwayofADSLaccessbandwidthcannotmeettheneeds,andthereforewithhighbandwidthandhighstabilityoftheadvantagesofFTTH(FiberToTheHome)FTTHtechnologydevelopmentandapplicationisbecomingthetrend.Inthispaper,FTTHaccesstechnologymainlycarrysoutwiththefollowingaspects.First,throughtheintroductionoftheconceptofFTTH,includingadetailedanalysisofmulti-servicetransportplatform,pointtopointEthernetpassiveopticalnetworksystemsandpassiveopticalnetworktechnology,throughtheabovecomparisonofFTTHimplementationtechniques,obtainedavarietyoftechniquesadvantagesanddisadvantages,andforoccasions.Second,hispaperdescribesthemainFTTHaccesstoachievePON(PassiveOpticalNetwork),andPON'sbasicstructure,classificationwereanalyzed.ThroughseveralPONaccesstechnologycomparison,thecurrentEPONisthemostsuitableforChina,andcanbestronginthedevelopmentofChina'sFTTHaccesstechnology.Third,focusontheEPONsystemreferencearchitecture,multiplexingprinciples,protocolstack,theframestructureandexternalinterface,providingthetheoreticalsupportforEPON-basedFTTHconstruction.Fourth,thecombinationofFTTHaccesstechnology,EPONprinciples,andFTTHconstruction-relatedrequirements,thispaperdescribesAtheconstructionofresidentialfibertothehomeasanexample.Keywords:PON;FTTH;EPON;理工大学毕业设计III目录摘要..............................................................................................................................................IAbstract..........................................................................................................................................II第1章绪论...................................................................................................................................11.1FTTH的研究背景..............................................................................................................11.2FTTH技术发展的现状......................................................................................................11.3FTTH技术的发展前景......................................................................................................2第2章PON技术的研究................................................................................................................32.1PON的定义.......................................................................................................................32.2PON的基本结构...............................................................................................................32.3PON的分类.......................................................................................................................32.4几种PON接入技术的比较...............................................................................................52.5PON的应用环境与发展趋势............................................................................................62.6EPON的参考结构..............................................................................................................62.7EPON的复用原理..............................................................................................................82.8EPON的协议栈.................................................................................................................92.9EPON的帧结构...............................................................................................................102.10EPON的对外接口..........................................................................................................112.11PON技术接入方式........................................................................................................12第3章FTTH光纤到户技术研究.................................................................................................173.1FTTH的概念..................................................