认知无线网络的路由和频谱联合算法分析-analysis of routing and spectrum joint algorithm in cognitive wireless networks.docxVIP

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认知无线网络的路由和频谱联合算法分析-analysis of routing and spectrum joint algorithm in cognitive wireless networks.docx

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认知无线网络的路由和频谱联合算法分析-analysis of routing and spectrum joint algorithm in cognitive wireless networks

AbstractInrecentyears,withtherapiddevelopmentofwirelesscommunicationtechnology,anewtypeofnetwork,cognitivewirelessnetworkshasbeencreated.Inthecognitivewirelessnetwork,secondaryusersconstantdetectingtheavailableofusefulspectrum,thenaccessandusespectrumopportunisticandwithoutinterferingwiththeprimaryusers,.Routingisoneofthemostimportantissuesincognitivewirelessnetworkandalsoveryhardtoresearch.Routingprotocolofcognitiveradionetworkneedfurtherresearch.Inthisbackground,inthispaper,weproposedanewroutingalgorithmwhichisusedtoreducethecognitivewirelessnetworkdatatransmissiondelayandalsoincreasenetworkthroughput.Thispaperfirstintroducedthecognitivewirelessnetworkastheoriginanddevelopmentofthecourse,andthensimplyintroducedtheresearchsituationaboutthecognitivewirelessnetworktheseyears,wealsoanalyzedtheresearchhotspotandthedifficultyincognitivewirelessnetwork,andwirelessnetworktechnologyrelatedtocognitiveradionetwork.Then,onthebasisofsummaryandanalysissomeoneothers’research,weproposesournewroutingalgorithms.Intheproposedalgorithm,asourcenodewillsetuparoutetodestinationnodeinawaysimilartoclassicAODVroutingprotocolalgorithm.ButunliketraditionalAODVmethod,inouralgorithms,eachnodetransferstheroutingrequestpackettothesamedestinationseveraltimes,thismakesthedestinationnodecancreatemanydifferentpathstothesourcenodebytheinformationstoredinthedifferentroutingrequestpackets.Thesimulationresultsshowthatourroutingprotocolcanreducethedroppedprobabilityofsecondaryusercalls,reducetheend-to-enddelayandtosomeextent,increasenetworkthroughput.Ourroutingprotocoldecidesthepathselectalgorithmdependingonthetypeofthenode.Forthenodesrequestlowerend-to-enddelay,wewillchoosethepathwhichhassmallload,fortheothernodes,wepaymoreattentiontothedurabilityofthelink.Inaddition,inordertocopewithourproposedroutingprotocols,wealsoproposedaMACprotocolbasedonthebusinesspriority,thisprotocolcanimproveend-to-enddelayofthehighprioritybusiness.Keywords:cognitiveradio;route;prioritybusiness;throughput;end-to-enddelay目录摘要IA