trust-based evolutionary game model assisting aodv routing against selfishness

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1、ARTICLEINPRESSJournalofNetworkandComputerApplications31(2008)446–471www.elsevier.com/locate/jncaTrust-basedevolutionarygamemodelassistingAODVroutingagainstselfishnessK.Komathy,P.NarayanasamyDepartmentofComputerScienceandEngineering,AnnaUniversity,IndiaReceived22April2007;receiv

2、edinrevisedform7January2008;accepted9February2008AbstractSelf-organizingnetworkssuchaswirelessadhocnetworkspresentanumberofproblemsandparadoxestowardstrustworthinessandconsistencyofthenetwork.Lackofcooperationbetweennodesdrasticallybringsdownthethroughputofthenetwork.Selfishbeha

3、viorofthenodesisoneoftheissues,whichdeterthetrustamongthem.Thispaperexploresthemultiplemodestobuildtrustandproposesaneffective,dynamicanddistributedframeworkusingevolutionarygametheory.Strategic,non-cooperativeandevolutionarygametheoryhasbeenutilizedtomodelthedynamicbehaviorofs

4、elfishnodesinaself-policingadhocnetwork.AODVroutingassistedbytheproposedgamemodelenlightensacogentscenario,whichdemonstratesthatitcanstimulatecooperationamongselfishnodes,albeitwithoutnegotiations.Theproposedmodelencompassestwodistinctmodestolearnandpredictthebehaviorofneighborsn

5、amelydeterministicandrandom.Deterministicmodeisagenericonewhichhelpstoanalyzethebehaviorofthenetworkforstandardstrategicpatternswhereastherandomstrategyprofilesareexploredusingrandomizedanalysisbasedongeneticalgorithm.Thispaperinvestigatesthesimulatedresultsforthetwomethodsandas

6、sertsthatifnodesuseevolvedstrategiesandtrustevaluationmechanism,thenthemodelsupportsinaccomplishingthecooperationleveltoreachthemaximumpossible.r2008ElsevierLtd.Allrightsreserved.Keywords:Trust;Adhocnetwork;Iteratedprisoner’sdilemma;Strategicgametheory;Geneticalgorithm;Cooperat

7、ionenforcementtechniquesCorrespondingauthor.Tel.:+914424484585.E-mailaddress:gomes1960@yahoo.com(K.Komathy).1084-8045/$-seefrontmatterr2008ElsevierLtd.Allrightsreserved.doi:10.1016/j.jnca.2008.02.002ARTICLEINPRESSK.Komathy,P.Narayanasamy/JournalofNetworkandComputerApplications

8、31(2008)446–4714471.IntroductionInwirelessnetworkssuch