基于分层决策与非均匀网络拓扑结构的能耗均衡策略分析

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1、ABSTRACTInWirelessSensorNetworks(WSN)，energyofthenodeisSOlimitedthatenergyutilizationeffidencyisparticularlyimportant．InmanysensorNetworks，unevenenergyconsumptionofthenodeleadstonetworkdeath．Meanwhiletherearestillalotofenergyisnotfullyutilized．Thissituationnotonlyreducesthelifeof

2、thenetwork，butalsocausesseverewasteofenergy．Therefore，itisessentialtoinvestigatetheproblemofenergyconsumptionbalance．Astothebalanceproblemofenergyconsumption，scholarstrytoimprovethenetworktopology,optimizetheroutingprotocol，movethebasestationsandSOon．Thoughtheirachievementshavebe

3、enverifiedtohavespecificeffects，therearestillsomelimitationsintheirresults．Inthisdissertation，weanalyzethecausesofunevenenergyconsumptioninessence，andproposeasimplenon-uniformnodedeploymentstrategyfromthenetworktopology,whichbalancestheenergyconsumptionoftheentirenetwork．Thisdiss

4、ertationisconstructedfromtwoaspects．Firstly,nmlti-hopmutingstrategyofthenodesisakeytopic，andithasansignificanteffectOiltheperformanceofthenetwork．Sowestudythemulti-hoproutingstrategyfromnetworkhierarchy,andprovethatthereisanoptimalnetworkhierarchicalmodeltorealizeit．Secondly,acco

5、rdingtotheresultsfromnetworkhierarchyandthenetworktopology,wereconsiderthenetworkstructureandadjustdensityoftheinnerandouternodes．Then，weobtainanewnon．uniformstrategytodeploynodesandrealizethefunctionofrelayingandsendingrespectively．Itcanreducetherelayingtaskofthenodeseffectively

6、andchangetheunfavorablesituationthatnodesdiedtooearlyduetoheavyload．WeverifytheefficiencyofouralgorithmviasimulationontheNS2platform．Weusethetotalnumberofthedatapacketsreceivedbybasestationandthenodesurvivalsituationtoevaluatetheperformanceofthealgorithm．Simulationresultsshowthat

7、thenewalgorithmgreatlyimprovestheenergyefficiencyandperformsbeaerintheenergybalanceofthenodecomparedwithotheralgorithmsunderthesarfleconditions．KeyWords：WirelessSensorNetworks，energyhole，energybalance,Networkmodel，non-uniformnodedeploymentⅡI——·————————————一．竺!堡丝!IV目录第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1选题背景与课题意义⋯．■⋯⋯⋯⋯⋯⋯⋯⋯⋯