改進(jìn)的DTN路由協(xié)議在高速公路環(huán)境下的仿真研究.pdf

1、天津大學(xué)碩士學(xué)位論文改進(jìn)的DTN路由協(xié)議在高速公路環(huán)境下的仿真研究姓名：?jiǎn)挝膫ド暾?qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：計(jì)算機(jī)科學(xué)與技術(shù)指導(dǎo)教師：張鋼201111ABSTRACTNowadays，themainlyresearchontheprotocolofmobilevehiclenetworkisbasedontheconnectednetworksButthismethodhasitslimitationsThemajoritynodesinth

2、isnetworkhavetheconstraintthattheyarerequiredtoconnectwithatleastoneothernodemostofthetimeThemessagewillnottransmitsuccessfullyifthereisnopathfromsourcenodetothedestinationSoitalwayscannotacquiretheanticipativeeffectswhe

3、nappliesthetraditionalroutingprotocoBintheradiolinkinstabilitynetworksTheresearchofhighwaymovementmodelthatstudiedinthepaperhasjustproposedunderthisbackgroundBecausethenodesinthiscircumstancehaveveryhighspeed，andthenetwo

4、rktopologystructurechangesveryquicklyThismakesthenode’SradiolinkinstabilityanditisverydifficulttoensurethereisastabletransmissionlinkbetweenthetwonodesThisenvirenmentmakesthetraditionalmethodnotperformwellAccordingtothef

5、eatureofvehiclemovement，thisarticleproposedtheparticularrequestthatappliedDTNarchitecturetothehighwayenvironmentOrdinaryDTNprotocolonlyusessinglenodeastheunitofmessagestoringandforwardingButpossibilityoftheappearanceofsi

6、nglenodeisgreatlyreducedonthehighwayItwillresultintheresourcewasteifweperformitaspastThisarticleproposesahybridDTN—DSRprotocoltohandlethisproblemThisprotocoladoptsaneffectiveleaderelectionalgorithmtoimprovedexistingclust

7、erbasedmethodandusesahybridprotocolafterthegroupingItisverysuitabletoadoptthishybridprotocolwhichusesDTNbetweendiSjointgroupsofnodeswhileusingDSRroutingwithinthesegroupsAtlast，thisarticleusesQualnetsimulationsoftwaretoev

8、aluatetheperformanceofthemutingprotocolproposedWeperformedanexperimenttocomparetheDSR，EPlwiththeimprovedprotoc01WefoundthattheimprovedprotocolhaveabetterperformanceonmessagedeliveryratioandaveragedelaythanDSRandEPIKEYWOR