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Adhoc网络中基于QoS约束的AOMDV路由协议设计.docx

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Adhoc网络中基于QoS约束的AOMDV路由协议设计 Title:DesignofQoS-constrainedAOMDVRoutingProtocolinAd-hocNetworks Abstract: Inad-hocnetworks,providingQualityofService(QoS)guarantees,suchasdelay,reliability,andbandwidth,isessentialtosupportawiderangeofapplications.Inthispaper,weproposeaQoS-constrainedAd-hocOn-demandMultipathDistanceVector(AOMDV)routingprotocolthataimstooptimizeroutingdecisionsintermsofQoSrequirements.TheprotocolusesacombinationofroutediscoveryandroutemaintenancemechanismstoestablishandmaintainQoS-constrainedroutesinad-hocnetworks.WeevaluatetheperformanceofourproposedprotocolthroughsimulationandcompareitwithtraditionalAOMDV.OurresultsdemonstratethattheQoS-constrainedAOMDVprotocolachievesbetterQoSperformanceundervaryingnetworkconditions. 1.Introduction Ad-hocnetworksareself-organizing,infrastructure-lessnetworksthatconsistofmobilenodeswithoutanyfixedinfrastructureorcentralizedcoordination.Thesenetworksarewidelyusedinscenarioswheretraditionalwirednetworksarenotaccessible,suchasdisastermanagement,militaryoperations,andwirelesssensornetworks.Oneofthemajorchallengesinad-hocnetworksisrouting,especiallywhenconsideringQoSrequirements. 2.QoSConstraintsinAd-hocNetworks QoSparameters,includingdelay,reliability,andbandwidth,imposeconstraintsonad-hocnetworkroutingprotocols.Delay-sensitiveapplications,suchasreal-timevideostreamingandvoice-over-IP(VoIP),requirelowend-to-enddelay.Reliability-sensitiveapplications,suchasremotemonitoringsystems,demandhighpacketdeliveryratio.Bandwidth-intensiveapplications,suchasfiletransferandmultimediastreaming,needasufficientamountofavailablebandwidth. 3.AOMDVRoutingProtocol AOMDVisanon-demandmultipathextensionoftheAd-hocOn-demandDistanceVector(AODV)routingprotocol.Itallowsmultiplepathsbetweenasourceanddestinationtobemaintained,whichenhancesreliabilityandloadbalancinginthenetwork.However,AOMDVdoesnotconsiderQoSrequirementsduringrouteestablishmentandmaintenance. 4.DesignofQoS-constrainedAOMDVRoutingProtocol WeproposeanextensiontotheAOMDVroutingprotocolth