车载无线自组织网络协作MAC协议分析

《车载无线自组织网络协作MAC协议分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、重庆邮电大学硕士论文IIAbstractAsthefieldofwirelesscommunicationscontinuestoexpand，spawnedanewnetwor：ks虹udcIlre，n舡nedVehicularAdHocNetwork(VANET)．AsapartofthefutureIntelligentTransportationSystems(ITS)，VANETnotonlyhastheabilitytoprovidenavigation，entertainment，andIntemetaccessservic

2、es，butalsoCanprovidenecessaryreal．timeinformation，whichisusedforauxiliarydrivingandaccidentwarmng·Wi‰utdoubts，VANETwillensuremoresafe，comfortableandentertainingdrivingexperience．ThispaperbasesontheapplicationofcooperativeMACprotocolinVANET,andfocusesontheaffectofthevehicl

3、esmobilityandthedatatransmissionofdifferenttypes，findstheproblemfromtheexistingresearch，andproposesthecorrespondingsolutions，completesthefollowingwork：hlordertomeettheVANETs’highmobilityrequirements，andensurereliabledatatransmission．thispaperproposesaNovelMobilitypredicti

4、onCooperativeMACprotocol(NMC．MAc)．InNMC-MACprotocol，studiestherelayselectionproblemunderthemobilescenarios，proposesasuitabledistributedrelayselectionmechanismformobilescenarios；inordertoanalyzethemobilescenariosbetter,abstractsthemovementofmevehiclesintoseveralsimplemobil

5、escenarios，anddesignstheCorrespondingcooperativemechanismforthesedifferentmobilescenarios，torealizereliabledatatransmissionunderthedifferentmobilescenarios．SimulationresultsshowthatNMC．MACprotocolCanadapttonodes’mobilitybetter,andhaslowerbiterrorratio(BER)andoutageprobabi

6、lity,WhencomparestotraditionalDCF,COOPMACandCD．MAC，butreducesthethroughput．Inordertofurtherimprovethesystemthroughput，proposesacooperativeMACprotocolbasedonTwo—wayRelayandNetworkCoding(TRNC．MAc)．TRNC-MACprotocolusesthesamerelayselectionmechaIIlismastheNMC．MAC，anddoesfusio

7、nprocessingthroughtheserelaynodes，thenusestwo．wayrelaytechnologytoforwardtheseprocesseddata，savesthetransmissionslot．Simulationresultsshowthatwhencompareswithtraditionalone。wayrelayandDCF,TRNC．MACprotocolcanachievehighersystemthroughput．AlthoughcooperativeMACprotocolCangr

8、eatlyimprovethequalityofthedatatransmission，duringcooperativeprocess，oftenresultsinlowefficiency