智能交通系统中无线通信网络的研究

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1、中国海洋大学硕士学位论文智能交通系统中无线通信网络的研究姓名：王曦申请学位级别：硕士专业：通信与信息系统指导教师：熊建设20080601⋯。一●■●’‘■一IheResearchOtwireIesscommLInicationnetworK1-orInteIligentTransportationSystemsAbstractAlongwiththerapideconomicandsocialdevelopment，ourtransportationsystembecomesoverload，whichleadstomanyroaddeathsandroadcongestion

2、．Intelligenttransportationsystems(rrs)provideananswerforthesetransportationissues．ThecommunicationsystemofITS，whichtheITSbasedon，isoneofthemostimportantsub·system．Thispaperwillbefocusonthistopic．·ThecommunicationsystemofITSCanbedividedintotwoparts：Road—VehicleCommunication(RVC)systemandInter

3、-VehicleCommunication(ⅣC)system．Road．VehicleCommunicationsystemhasbeenresearchedcarefullybyITSresearchers．Anditisreasonabletoadoptcommunicationsystembasedonwirelessbase．stationbesideroads．Inter-VehicleCommunicationsystemismorecomplex，becausethetopologymightchangequickly弱thevehiclemoving．Tose

4、tupacommunicationnetworkbetweenmovingnodesisthekeytothisproblem．MobileAdHocNetworkhasbeenintroducedtosolvethisproblem，inwhicheachnodeCanbeseverasbothterminalandrouter．Sothematterofrapidchangingtopologyhasbeensolved．Inordertosolvetheproblemofhowtodistributesharedwirelessmediumfairlyandeffecti

5、vely,theDynamic··stayed·-timealgorithmaccordingtocollisionshasbeenputforwardtoimprovetheBinaryExponentialBackoffalgorithmusedinIEEE802．11．And，WeuseOPNETtosimulatetheDynamic—stayed—timealgorithm，theexperimentalresultshowsthatComparingwiththeoriginalalgorithm，theperformancesuch丛theutilizationo

6、fwirelessmediumandthethroughputhasobviouslyimproved．Meanwhile，inthispapertheroutingalgorithmsofMobileAdHocNetworkhavebeenresearched．Afterfullyanalyzingandcomparison，thispaperhaspointedoutthatAODVismoreeffectiveinInter-VehicleCommunicationsystemThisconclusionhasbeensupportedbysimulationresult

7、basedonOPNETModeler．Keywords：。IntelligentTransportationSystems；MediumAccessControl；routingalgorithms；SimulationⅡ独创声明。本人声明所呈交的学位论文是本人在导师指导下进行的研究工作及取得的研究成果。据我所知，除了文中特别加以标注和致谢的地方外，论文中不包含其他人已经发表或撰写过的研究成果，也不包含未获得(洼；垫遗查墓焦霞噩挂型岜盟笪：．奎拦亘窒2或其他教育机构的学位或证书使用过的材料