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时间:2019-05-14
《基于接收信号强度的无线传感器网络组网协议》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、42008,44(24)ComputerEngineeringandApplications计算机工程与应用基于接收信号强度的无线传感器网络组网协议李桂丹,孙雨耕,刘丽萍,张聚伟LIGui-dan,SUNYu-geng,LIUU-ping,ZHANGJu-wei天津大学电气与自动化工程学院,天津300072SchoolofElectricalEngineeringandAutomation,TianjinUniversity,Tianjin300072,ChinaE—mail:lgdtju@tju.edu.cnLIGui-dan,SUNYu-geng.LIULi—piIlg,et
2、a1.RSSIOP:Received-signal-strength-indicator-basedOrganizationProtocolforwireless∞nsornetworks.ComputerEngineeringandApplications。2008.44(24):4—8.Abstract:Limitedbyapplicationandnodestructure,wirelesssensornetworkscallforlow-costandlow-complexityalgorithms.Therefore,aReceived-signal-strength-
3、indicator-baseddistributednetworkOrganizationProtocol(RSSIOP)ispresented,inwhichnopositioninformationofanysensornodeisneeded.Byreceivingthecontrolmessagetransmittedbythebasestationequippeddi-rectionalantennathesensornodecompletedlocalizationandclustering.Accordingtotheresidualenergyandtherece
4、ivedsignalstrength,theclusterheadwaselectedineachcluster,andthedirectlinksweresetup.Accordingtothereceivedsignalstrengtheachclustermemberselecteditsowndatarelaynode,andthedatarelaylinksweresetup.Dependingonthedelayrequirementsspecifiedbytheusersorapplications,theclustermembersselectedeitherth
5、edirectlinksorthedatarelaylinksautomaticallytoforwarddatatOtheirclusterheads.Moreover,RSSIOPdesignedtwomethodsforlocalizedrotationofclusterheadsandtheiTlan-agementofdeadnodes.TheRSSIOPcallreducetransmittingpowerandalleviateclusterheads’workloadindatareceivingandfusinggreatly.Thesimulationresu
6、ltsunderdifferentscenestestifiedthevalidityofRSSIOP.Keywords:wirelesssensornetwork;cluster;receivedsignalstrengthindicator;networkorganization摘要:受应用场合和节点结构的限制,无线传感器网络的算法应具有低功耗和低复杂度等特点,为此提出了一种基于接收信号强度的分布式组网协议(RSSIOP)。节点不需要位置信息,通过接收基站定向天线扫描时发送的信息完成定位和分簇过程;根据剩余能量和接收信号强度竞选簇头,形成直接链路;根据接收信号强度,成员节点选
7、择转发节点,形成转发链路;按照网络用户的时延要求成员节点自动选择直接链路或转发链路向簇头传输数据。此外,RSSlOP设计了簇头轮换和失效节点的处理机制。该算法可以减小节点的发射功率,分担簇头在数据接收和融合两方面的工作负荷。针对不同场景进行了仿真,结果证明了算法的有效性。关键词:无线传感器网络:簇;接收信号强度;组网DOI:10.3778/j.issn.1002—8331.2008.24.002文章编号:1002—8331(2008)24-0004-05文献标识码:A中图分类号:
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