基于PEGASIS的WSN路由协议的研究与改进

Research and Improvement of WSN Routing Protocolbased on PEGASISAbstractWith the technological iterations and progress in the fields of informationand network communication,wireless sensor networks have also undergonedramatic changes,which have been applied to various industries and fields ofsocial life,involving defense and military,smart home,environmental testing,etc.However,from the actual YingYing situation,because the detectionenvironment is often under the influence of complex factors and conditions,wireless sensor nodes are often unable to achieve timely and effective node orpower supply replacement,which leads to frequent network blocking.Therefore,under the condition of certain energy supply of the whole network,itis of significant value to design a new algorithm with lower ratio of transmissionefficiency to energy consumption and longer network life cycle.As a classicalprotocol in this network framework,the PEGASIS protocol reduces the energyconsumed by the network transmission and extends the network life cycle to acertain extent compared to the LEACH protocol.However,since the clusterhead selection rule is random,the cluster point location is easily located at thefar end of the base station,which increases the transmission energyconsumption and also the transmission direction deviation,to address thisproblem,this paper explores the algorithm improvement based on PEGASISprotocol.The experimental results show that the improved PEGASIS protocolcan extend the network life cycle by 15.8%.Key words:PEGASIS;Life cycle;Cluster head;Selection strategy目录、引言.41.1课题背景…41.2国内外研究现状