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基于网络编码的无线自组织网络路由协议研究.docx

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基于网络编码的无线自组织网络路由协议研究 Abstract Withtherapiddevelopmentofwirelesscommunicationtechnology,wirelessnetworksareincreasinglybeingdeployedinvariousplaces,suchasacademicandindustrialsettings,publicsafetynetworks,andhome/officenetworks.However,thetraditionalroutingprotocolsinwirelessnetworkshavedisadvantagessuchaslowreliability,lowdatatransmissionrateandhighenergyconsumption.Toovercometheseproblems,networkcodingtechnologyisconsideredasaneffectivesolution.Inthispaper,wewillintroducetheresearchofwirelessadhocroutingprotocolbasedonnetworkcoding,andanalyzeitsadvantagesanddisadvantages. Introduction Wirelessadhocnetworkshaveattractedalotofattentionduetotheiradvantagesofflexibility,scalability,andeasydeployment.However,routingprotocolsinthesenetworksfacemanychallengesduetothedynamicandunpredictabletopologyofwirelessnetworks,limitedenergyresourcesofnodes,andhighinterferencelevels.Traditionalroutingprotocols,suchasAODVandDSR,havelimitationsondatatransmissionefficiencyandreliability,networkcongestion,andpacketlosses.Toovercometheselimitations,networkcodingtechnologyhasbeenproposedasaneffectiveapproachtoimprovetheperformanceofwirelessadhocnetworks. NetworkCoding-basedRoutingProtocols Networkcodingisatechniquethatcanefficientlyusethewirelesschanneltotransmitmultipledatapacketswithhigherreliabilityandfasterspeed.Networkcodingtechniquescanbeusedinmanywaysinwirelessnetworks,includingrouting,datadissemination,anddataaggregation. Routingprotocolsbasedonnetworkcodingcanbedividedintotwocategories:single-pathnetworkcodingroutingandmultipathnetworkcodingrouting.Single-pathnetworkcodingroutingusesnetworkcodingtocombinemultipledatapacketsintoasinglepacket,whichisthentransmittedfromthesourcenodetothedestinationnodethroughasinglepath.Thisapproachcanreducepacketcollisionsandcongestion,andalsoimprovethereliabilityofdatatransmission.However,single-pathnetworkcodingroutinghasthedisadvantagethatitissusceptibletonodefailures,congestion,andpacketlosses. Multipathnetworkcodingroutingusesmultiplepathstotran