移动自组网中基于渗流理论的概率可靠分发协议(英文)-豆柴文库

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移动自组网中基于渗流理论的概率可靠分发协议(英文)
Abstract:
Inrecentyears,mobileadhocnetworkshavegainedincreasingattentionfortheirwiderangeofapplications.However,theirdecentralizationanddynamictopologymakeitdifficulttomaintainreliablecommunicationamongnodes.Inthispaper,weintroduceaprobabilisticreliabledisseminationprotocolbasedonpercolationtheory(PRDP)formobileadhocnetworks.
Introduction:
Mobileadhocnetworks(MANETs)areself-organizingnetworkscomposedofmobilenodeswithoutafixedinfrastructure.ThedecentralizedanddynamictopologyofMANETsmakesreliablecommunicationachallengingtask.Onewaytoimprovereliabilityisthroughtheuseofreliabledisseminationprotocols.Theseprotocolsensurethatallnodeseventuallyreceiveamessageeveninthepresenceofnodefailuresandnetworkpartitions.
Percolationtheoryisamathematicalframeworkthatstudiesthebehaviorofrandomnetworks.Ithasbeenusedtoanalyzethebehaviorofvariouscommunicationnetworks,includingMANETs.PRDPisbasedonpercolationtheory,anditusesaprobabilisticapproachtodisseminatemessagesreliablyinaMANET.
ProtocolDesign:
PRDPisaprobabilisticprotocolthatusesaflooding-basedapproachtodisseminatemessages.Initially,whenanodewantstosendamessage,itbroadcastsittoitsneighbors.Eachneighbornodethendecidesprobabilisticallywhethertoforwardordiscardthemessagebasedonalocalprobabilitythreshold.Theprobabilitythresholdiscalculatedbasedonpercolationtheory.
Percolationtheoryassignsaprobabilityvaluetoeachnode,whichrepresentsthelikelihoodofthenodebeingincludedinaconnectedcomponentofthenetwork.Theprobabilitythresholdissettoafunctionofthepercolationprobability.Thisprobabilitythresholdensuresthatthemessageisforwardedbyasufficientnumberofnodestoreachallthenodesinthenetworkwithhighprobability.
Toreducethenumberofredundanttransmissions,PRDPusesaprobabilisticforwardingmechanism.Theforwardingprobabilityiscalculatedbasedonthedistancebetweenthenodeandthesourceofthemessage.Nodesclosertothesourcehavehigherforwardingprobabilities,whilenodesfartherawayhavelowerprobabilities.
SimulationandResults:
Toevaluatetheperformanceo