无线传感器网络的路由协议设计要同时关注单个节点的能耗及整个网络能量的均衡消耗.分簇算法能有效解决节点能耗受限与不同节点能量开销不平衡问题.在分析了传统分簇路由LEACH(low energy adaptive clustering hierarchy)协议中选择簇头算法不足和当前一些典型基于LEACH思想的路由改进算法的基础上,提出了一种改进的传感器网络分簇路由协议,通过采用一种新的簇首竞争参数,减小了簇形成过程中的控制消息开销,从而能够更好地解决网络节点能量异构问题.同时让簇头采用多跳通信方式向基站传输数据,进一步降低了能量开销.仿真结果表明,该协议能有效节省节点的能耗,延长网络生存周期.%Designing clustered routing protocol for Wireless Sensor Networks (WSNs)needs consider the energy of single node and the balance consumption of the whole network energy. Clustering resolves effectively node energy bottleneck and unbalanced consumption of clusters in W SNs. On the basis of analyzing the characteristics and shortcomings of traditional clustered routing LEACH (low energy adaptive clustering hierarchy)protocols and some recent representative improved routing algorithms based on the idea of LEACH, a routing improvements protocol based on clustering in wireless sensor network is proposed. It adopts a new cluster head competition parameter, which can reduce the control message cost of during cluster formation and solve the net nodes energy heterogeneous problem in a better way. Yet it reduces the quantity of cluster-head communicate with the base station by multi-hop. Simulation results show that the protocol can save the node energy consumption effectively and prolong the network lifetime.
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