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1、AdHocNetworks8(2010)416–429ContentslistsavailableatScienceDirectAdHocNetworksjournalhomepage:www.elsevier.com/locate/adhocAgametheorybasedreputationmechanismtoincentivizecooperationqinwirelessadhocnetworksJuanJoséJaramillo*,R.SrikantCoordinatedScienceLabora
2、toryandDept.ofElectricalandComputerEngineering,UniversityofIllinois,Urbana-Champaign,IL61820,UnitedStatesarticleinfoabstractArticlehistory:Inwirelessadhocnetworksonewaytoincentivizenodestoforwardothernodes’packetsReceived20November2008isthroughtheuseofreput
3、ationmechanisms,wherecooperationisinducedbythethreatofReceivedinrevisedform30Septemberpartialortotalnetworkdisconnectionifanodeactssel?shly.Theproblemisthatpacket2009collisionsandinterferencemaymakecooperativenodesappearsel?shsometimes,gener-Accepted14Octob
4、er2009atingunnecessaryandunwantedpunishments.WiththeuseofasimplenetworkmodelAvailableonline20October2009we?rststudytheperformanceofsomeproposedreputationstrategiesandthenpresentanewmechanismcalledDARWIN(DistributedandAdaptiveReputationmechanismforKeywords:W
5、irelessadhocNetworks),wherewetrytoavoidretaliationsituationsafteranodeisfal-AdhocnetworksWirelessnetworksselyperceivedassel?shtohelprestorecooperationquickly.Usinggametheory,weproveReputationmechanismsthatourmechanismisrobusttoimperfectmeasurements,iscollus
6、ion-resistantandcanIncentiveschemesachievefullcooperationamongnodes.Simulationsarepresentedtocomplementourthe-Cooperationenforcementoreticalanalysisandevaluatetheperformanceofouralgorithmcomparedtootherpro-posedreputationstrategies.ó2009ElsevierB.V.Allright
7、sreserved.1.Introductiontherefore,itisnecessarytodevelopmechanismsthatallowcooperationtoemergeeveninthepresenceofsel?shWirelessadhocnetworksconsistofasetofself-con?g-users.uringnodesthatdonotrelyonanyinfrastructuretocom-Incentivemechanismscanbebroadlydivide
8、dintwomunicateamongeachother.Toachievethisgoal,asourcecategories:credit-exchangesystemsandreputation-basedcommunicateswithadistantdestinationthroughinterme-systems.Incredit-exchangesystems[2–8],coopera
