基于ims的p2p网络电视系统架构的研究

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1、ABSTRACTWiththedevelopmentofvarioustechnologiesforNextGenerationNetwork(NGN)，peoplethinkhighlytotheapplicationofIPTVAsthecoretechniqueofNGN．IMSbecomestheunificationplatformwhichcansupportIPⅣandtodayithaswidelybeenregardedasthebasiccontrolplatformoffuturenetwork

2、convergence．IntroduceP2PtechnologytoIPTVsystemCanmakefulluseofsystematicresources，maketrafficmodelsmorereasonable．reducestressinCentralServerandgetthebestuseofstorageandcomputationresourceswhichareparticipateinthesystem．IPTVsystembasedonP2Patpresentcanapplyserv

3、icewithlowercost，butP2Ptechnologyhasitsowndefectsandshortage，forexample．itlacksofeffectivecontrolandmanagementmechanism，norcanitsatisfyusers’individualrequirementsforbilling．Fortelecommunicationoperators，itiSdimculttoformulateaneffectiveprofitmodel，SOitdoesn’tf

4、itforoperators’operation．HowtoapplycontrollableandmanageableP2PtechnologytoIPTVservicenetworkiSthemainideathis也esiswilltalkabout．Thispaperglobalstatedthedesignedarchitecture，designtheauthenticationandregistrationofthesystem，andassumedanewideaforIPTVservicedispa

5、tch．ThesearchforresourceiScoreofP2Ptechnology．Inthispaper,thechordprotocolwhichiSusedinsearchingforprogramsresourceiSalsoanalyzedindetail，anditproposedanadvancedchordalgorism--MDT-Chord．Finally,thepapercarriedoutasimulationexperimentbyusingopen—sourcesoftware，t

6、heresultsshowthattheimprovedalgorismscanlargelyimprovethelookuproutinghop，thenetworkdelays．KEYWORDSIPTV,IMS，P2P,Chord目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．IABSTRACT．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．II第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．1研究背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

7、⋯．11．2国内外研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．31．3研究内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．51．4论文组织结构⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯5第二章网络电视、P2P技术及IMS架构介绍⋯⋯⋯⋯⋯⋯⋯⋯⋯．．62．1网络电视⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．62．1．1网络电视系统概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．62．1．2现有网络电视模式⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．72．2P2P技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯lO2．2．1P2P技术概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯lO2．2．2P2P网

8、络模型⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯122．2．3DHT网络⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．132．3IMS架构⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯142．3．1IMS架构概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯152．3．2IMS的特征⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．182．4本章小结⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯19第三章基于IMS的P2P网络电视