无线网络多播差错控制协议研究

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1、ABSTRACTABSTRACTInrecenttheofwirelesscommunicationyears，withspeedydevelopmentnetworksandthedemandforthewirelessIntemetaccess，particularlytheincreasingandofthethirdservicescurrentlyandtheapplicationpopularizationgenerationofthefourthnetworksinthefuture．sometraditionalbusine

2、sspromotiongenerationforbasedonthewkednetworkgraduallyturntothewirelessnetworks．Thedemandonlineeducation，onlinegame，livevideoandIntemetProtocolTelevision(IPTV)andotherreal．timedataservicesistheinherentcharacteristicsconstantlyincreasing．Butofwirelessnetworks，suchaslossrati

3、oandhiddenterminalproblem，puthighpacketforwardformulticasthigherrequirementsprotocols．Therefore，inordertoachievethehigh—speedandreliablemulticast，thenewshouldavoidthemulticasterrorcontrolprotocoldelayprotocolsapplicationlayermulticastandreducethecharacteristics，effectively

4、improveprotocolefficiencynetworkandbandwidthshouldfocusonovercomingdelayconsumption．Theprotocolthetheoffeedbackcollisioninsinglechannel．Thisdissertationstudiesproblemsolutionstothereliablemulticasterrorcontr01protocolsforthemediaaccesscontr01(MAC)basedonthefeaturesofthewir

5、elessnetworks．Thedissertationconsistsoffollowingaspects：(1)Inordertoprovidereferencesforthenewprotocolsproposed，thiserrordissertationanalyzesthemeritsanddefectsoftheexistingMAClayermulticastcontrolinWirelessLocalAreaNetworks(WLAN)andWirelessMeshprotocolsandtheNetworks(WMN)

6、，surveyscomparesprotocols．dissertationareliableforMAClayermulticasterror(2)TheproposesprotocolMACcontrolinWLANnamedFixedTimeRandomExtendedImplicitallowsuserstOfeedbackrandomAcknowledgmentProtocol(FTREIA)．Theprotocolbasedtothemechanism，theproblemofonreceiveddatainthefixedti

7、me．Owefeedbackcollisionandfeedbackexplosioninsinglechannelmulti—accesswkelessnetworksisovercomeandthethroughputisincreased．controlin(3)ThedissertationanewreliablemulticasterrorprotocolproposesBeacon—drivenWirelessMeshNetworks(WMY)namedHybrid-Layer-dividedLeaderBasedProtoco

8、l(Hybrid—Layer—BLBP,HLBLBP)．Inordernottoretransmitforeacherroneousmulticastprocesseachtim