一种能量感知的无线传感网拓扑控制算法.pdf

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1、第26卷第3期传感技术学报V01．26No．32013年3月CHINESEJOURNALOFSENSORSANDACTUATORSMar．20l3AnEnergy-AwareTopologyControlAlgorithmforWirelessSensorNetworksCHENZhi’'’¨，LUO尸，姗Wenjing，HLuoQuan，HUANGXunsongLCA0YiL，MA0BoL(1．CollegeofComputer，NanfingUniversityofPostsandTelecommunications，Nanjing210003，China；2．StateKeyLabor

2、atoryforNovelSoftwareTechnology，NanjingUniversity，Nanjing210093，China；3．JiangsuHighTechnologyResearchKeyLaboratoryforWirelessSensorNetworks，Nanjing210003，China；4．KeyLabofBroadbandWirelessCommunicationandSensorNetworkTechnology，MinistryofEducation，Nanjing210003，China5．S~houEntry．ExitInspectionandQua

3、rantineBureau，SuzhouJiangsu215104，China)Abstract：AtopologyalgorithmEADCAforheterogeneouswirelesssensornetworkswithimbalancedenergydistributionispresented．Intheproposedalgorithm，everynodecomputesitstheoreticaltimeofsendingtheclusterheaddeclarationmessageaccordingtoitsremainingenergyandtheaveragerema

4、iningenergyofitsneighbors．Atthetheoreticaltime，thenodewhichhasnotreceivedanyclusterheaddeclarationmessagewillbecometheclusterheadandbroadcasttheclusterheaddeclarationmessage；ontheotherhand，thenodewhichhasreceivedtheclusterheaddeclarationmessagebeforewillbecomethemembernodeandgiveupbroadcastinganycl

5、usterheaddeclarationmessage．Meanwhile，thisalgorithmmakesuseofempiricaldataandmakestheisolatednodesandthenodeswithlessenergysleepforaroundintheprocessofelectingclusterheads．SimulationresultsshowthatEADCAcanextendthenetworklifecycle，andeffectivelycontrolthedistributiondensityoftheclusterheads．Keyword

6、s：wirelesssensornetworks；topologycontrol；energyaware；clusteringEEACC：6150Pdoi：10．3969／j．issn．1004—1699．2013．03．018一种能量感知的无线传感网拓扑控制算法陈志'’。’，骆平，岳文静，扈罗全，黄洵松，曹壹，毛博(1．南京邮电大学计算机学院，南京210003；2．南京大学计算机软件新技术国家重点实验室，南京210093；3．江苏省无线传感网高技术研究重点实验室，南京210003；4．宽带无线通信与传感网技术教育部重点实验室，南京2100035．苏州出入境检验检疫局，江苏苏州215104)

7、摘要：为不平衡能量分布的异构无线传感网构建一种拓扑控制算法EADCA。在该算法中，每个节点根据自己的剩余能量和邻居节点的平均剩余能量计算簇头声明报文发送的理论时刻；在该理论时刻，没收到任何簇头声明报文的节点成为簇头，该簇头广播簇头声明报文；收到簇头声明报文的节点成为普通节点并放弃发送簇头声明报文。同时，该算法在簇头竞争过程中使用经验数据，并对孤立节点和能量过低节点进行休眠。仿真结果表明，EADCA能够延长网络