物联网感知层非周期动态簇维护方法.pdfVIP

第25卷 第 12期 传 感 技 术 学 报 V01．25 No．12 2012年 12月 CHINESEJOURNALOFSENSORSANDACTUATORS Dec．20l2 Non-PeriodicandDynamicClustersM aintainingM ethodforSensing LayeroftheInternetofThings HUXiangdongH ，SHANGKeL，WEIQinfang (1．CollegeofAutomation，ChongqingUniversityofPostsandTelecommunications，Chongqing400065，China； 2．Editoria1Board．urnafofChongqingUniversityofPostsandTelecommunications，Chongqing400065，China) Abstract：HierarchicalclusteringisabasicnetworkingmodelforsensinglayeroftheInternetofthingsbasedon a large—scalewirelesssensornetwork，amaintainingmethodofrnon—periodic，energy—efficientanddynamic clustersis proposedtosolvetheproblem ofnumerouseneryg consumption resulted from the traditionalperiodicandwhole— networkre—clusteringmechanism．Onlychanged clustersarere—clusteredwhen theresidualenergy oftheircluster headsislessortheirnodesarecompromised，andaschemeofintegratedinner—clustersandinter—clustersmaintaining methodisappliedtosingleOtmulti—hopnetwork．Themethod ischaracteristicinnon—periodic，localanddynamic responseforthechangedcluster(S)ornode(S)，itsoutstandingmeritisabletolargelyimprovetheenergyefficiencyof sensornodesin thesensinglayeroftheInternetofthings．Simulationresultsimplythattheproposedmethodcan greatlyprolongthelifetimeofnetwork comparedwiththetraditionalone，concretely，theaveragelifetimeofnetwork nodeskeepunder100％ activeandmayincreasebynearly9timesinoursimulationsthanclassicLEACH protoco1． Keywords：theinternetofthings；clustersmaintaining；non—periodical；dynamicresponse；lifetime EEACC：6150M；6210C doi：10．3969／j．issn．1004—1699．2012．12．026 物联网感知层非周期动态簇维护方法 胡向东h，尚 可 ，魏琴芳 (1．重庆邮电大学 自动化学院，重庆400065；2．重庆邮电大学学报编辑部，重庆400065) 摘 要 ：层次式分簇网络拓扑结构是基于大规模无线传感网的物联网感知层的基本组网模式，为解决传统周期性全局簇维 护所带来的大量能量消耗问题，提出一种非周期高效动态簇维护方法。当簇头剩余能量相对较低或节点被敌方攻陷时，只在 受影响