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1、华中科技大学硕士学位论文ABSTRACTPeer-to-PeerVideo-on-Demand(P2P-VoD)iscurrentlyapopularapplicationoftheinternet.Comparedwithclient/serverarchitecture,P2P-VoDsystemhasseveraladvantages,suchasscalability,deploymentoflowcostandrobustness.However,P2Pnetworkcouldnotprovideareliableservice.Peersmayleavethesystema
2、tanytime,networkissuesandotherfactorswouldcausenegativeinfluenceonuserexperience.HybridP2Ptechnologycansolvethisproblem.InhybridP2Pnetwork,P2Ptechnologyiscombinedwithclient/serverarchitecture.ThehybridP2Psystemisnotonlyscalable,butalsoprovidesreliablequalityofservice.HybridP2Pnetworktechnologyis
3、nowusedinmanycommercialVideo-on-Demandsystems.ABitTorrent-LikeVideo-on-Demandsystem(referredtoasBLVoD)isproposedinthisthesis.BLVoDimplementshybridP2Parchitecture,whichisscalablewithreliablequalityofservice.Themaincontributionofthisthesisasfollows:(1)DesignBLVoDsystemarchitecture,includingphysica
4、lentities,interfaces,protocolsandsystemprocesses.ThearchitecturebasedonhybridP2Pnetwork.Meanwhile,BLVoDprovidesmanagementandmaintenancefunctions,whichmakeseffortstowardsacommercialP2P-VoDsystem.(2)Designandimplementationofon-linevideoserver,whichiscapabletoprovideconcurrencyvideoserviceandrespon
5、seadministrativeoperations.(3)Referencesthenewlyresearchresults,werealizechunkselectionalgorithmandschedulingalgorithminpeerside.Thischunkselectionstrategyisself-adaptation,whichcombinesgreedyalgorithmandrarestalgorithm.ThetestshowsthatBLVoDsystemnotonlyprovidegoodqualityofP2P-VoDservice,butalso
6、achievereliablevideooperationandservermanagementfunction.BLVoDisimportantprototypeandfoundationofP2P-VoDsystem.Onthatbasis,throughimprovementofarchitectureandalgorithms,BLVoDcanbefurtherusedforreallarge-scaleP2P-VODapplication.Keywords:HybridP2PSystem;BitTorrent-Like;Video-on-Demand;ManagementII
7、华中科技大学硕士学位论文目录摘要..............................................................................................................................IABSTRACT.........................................................................