硕士论文-视频业务在xDSL局端设备中的实现方案

上海交通大学硕士学位论文视频业务在xDSL局端设备中的实现方案姓名：迮超申请学位级别：硕士专业：电子与通信工程指导教师：周军;陈力军20050601-3-()20057202005720-4-2005720-5-IPQoSxDSLxDSLIPDSLAMIPDSLAMxDSLIPDSLAMIPDSLAMxDSLIPDSLAMIPDSLAMQoS-6-IPDSLAMIPDSLAMQoSIPDSLAMIPDSLAMIGMP-7-ABSTRACTAstherapidlyspreadingofIPnetwork,broadbandaccessusersevolvetheirapplicationrealmfromtraditionalservicelikewebpagebrowsing,filedownloadingtoreal-timemultimediaservices.Multimediaserviceslikeconferencecall,videobroadcasting,andvideoondemandaregraduallyadoptedbyusers.Thosevideoservicesrequirenetworkdevicesincreasenetworkbandwidth,improvequalityofservice,developnewfeaturetomanagemulticaststreamandreplicatemulticaststream.Inthebroadbandaccessrealm,thexDSLtechniqueisleadingthebroadbandaccessmarket.StudyinghowtoimprovetheprimaryxDSLcontraofficeequipment–IPDSLAMandmakeitaccommodatetotherequirementofvideoservicehasimportantrealisticsense.ThereachingworksinthethesissurroundhowtosupportvideoserviceinIPDSLAM.FirstlythethesisbrieflyintroducethexDSLtechniqueandthecharacteristicofthetechnique,introducethedefinitionofIPDSLAMandthereferencedesignofIPDSLAM.Afterwardbaseonthesortofvideoservice,thethesisanalysisthemainissuesmustberesolvedwhendevelopvideoservices.Thethesisdiscussesthemulticastcontrol,multicastreplication,upwardnetworkbandwidth,qualityof-8-service,authentication,authority,accountinginIPDSLAM.Thethesisfocusesonseveralkeytechniquesubjects:theimplementationofmanagedmulticast,theQoSimplementationinIPDSLAM,theanalysisandcalculationofsomekeyparametersinIPDSLAM.IPDSLAMIGMPVIDEOSERVICE,BANDWIDTHCONTROLAUTHENTICATIONQoS-11-1-1ADSL.........................................................................................15Figure1-1ADSLCenterOfficeEquipment..........................................................151-2IPDSLAMIGMP...............................................16Figure1-2MulticaststreamandIGMPinIPDSLAMdevice...............................162-1xDSL..........................................................................................25Figure2-1thetopologyofxDSLnetwork.............................................................252-2IPDSLAM......................................................26Figure2-2NetworktopologyforIPDSLAM........................................................262-3IPDSLAM..........................................................................27Figure2-3IPDSLAMreferencemodel.................................................................272-4IPDSLAM..................................................................28Figure2-4IPDSLAMhardwarereferencemodel..................................................282-5IPDSLAM..................................................................29Figure2-5IPDSLAMsoftwarereferencemodel...................................................292-6IPDSLAM..................................................................30Figure2-6ManagementarchitectureofIPDSLAM..............................................302-7VRIPDSLAM......................................................................32Figure2-7VRfunctionusedinIPDSLAM...........................................................323-1IPDSLAM..................................................................34Figure3-1NetworktopologyforIPDSLAMdevice.............................................343-2IPDSLAMIGMP..............................................................35Figure3-2IGMPprotocolstackinIPDSLAM......................................................353-3IGMPsnoopingIGMPproxy.......................................................36Figure3-3IGMPsnoopingversusIGMPproxy....................................................363-4IGMPproxyreport.................................................................37Figure3-4IGMPproxyinreportphase.................................................................373-5IGMPproxyleave....................................................................38Figure3-5IGMPproxyinleavephase..................................................................383-6IPDSLAM..................................................................41Figure3-6HierarchycopymechanismsinIPDSLAM..........................................414-1QoS...............................................................................42Table4-1QoSrequirementfordifferentapplications...........................................424-1IPDSLAMQoS................................................................43Figure4-1IPDSLAMdownstreamQoSprocess...................................................434-2——802.1P(p-bits)..................................45Table4-2TrafficClass-to-Application-802.1Pvaluemappingtable....................454-2...........................................................................................46Figure4-2Referenceschedulinghierarchy...........................................................46-12-6-1IEEE802.1X..............................................................54Figure6-1IEEE802.1XAccessControlModel...................................................546-2IEEE802.1X..