Routing protocol based on social characteristics for opportunistic networks

(整期优先)网络出版时间:2014-01-11
/ 1
Opportunisticnetworksarederivedfromdelaytolerantnetworks,wheremobilenodeshavenoend-to-endconnections.Nodesarerepresentedbypeople,whichmeansthatopportunisticnetworkscanberegardedassocialnetworks.Humanmobilityplaysanimportantroleinaffectingtheperformanceofforwardingprotocolsinsocialnetworks,furthermore,thetrajectoryofpeople'smovementsaredrivenbysocialcharacteristics.However,currentroutingprotocolsrelyonsimplemobilitymodels,andrarelyconsidersocialcharacteristics.Consideringtwoheterogeneousnetworkmodels,ansocialopportunisticnetworksrouting(SONR)wasproposedwhichbringsanadapteddiscreteMarkovchainintonodes'mobilitymodelandcalculatesthetransitionprobabilitybetweensuccessivestatus.ComparisonwasmadebetweenSpray,WaitandEpidemicprotocol.SimulationshowthatSONRcanimproveperformanceondeliveryratio,deliverylatencyandnetworkoverhead,meanwhile.SONRapproachestheperformanceofEpidemicrouting.