无线传感器网络路由协议改进方案*

作者：童孟军，张晓娟 日期：2009-11-16/span> 浏览：3763 查看PDF文档

无线传感器网络路由协议改进方案*

童孟军，张晓娟
（杭州电子科技大学 计算机学院，浙江 杭州 310018）

摘要：针对无线传感器网络中节点能量的有限性问题，在LEACH协议基础上，采用新型的簇首选择机制，通过考虑候选节点的剩余能量、地理位置等参数来优化簇首选择，从而避免了低能耗和位置不佳的节点被选为簇头；同时为避免簇头节点能耗过多，引入节点度的概念；然后根据簇头离基站的距离对区域进行划分，实现多跳传输，进而保证了网络内节点能量负载的均衡性。仿真实验结果表明，新的算法机制能够更好地均衡网络内的节点能量，从而延长了节点与网络的寿命。
关键词：无线传感器网络；低能耗自适应分簇层次协议；节能；簇；节点度
中图分类号：TP393文献标识码：A文章编号：1001-4551(2009)09-0020-04

Routing protocol improvement for wireless sensor network
TONG Mengjun, ZHANG Xiaojuan
(College of Computer, Hangzhou Dianzi University, Hangzhou 310018, China)
Abstract: Aiming at the limited battery power of nodes on wireless sensor network and on the basis of the protocol LEACH, a new strategy of clusterhead selection was used. The remaining energy and the position of the sensor node were taken as the parameter to optimize the process of clusterhead selection. It was avoided that choosing nodes with lower residual energy and bad position as clusterheads. In the meanwhile, to avoid excessive energy consumption in clusterhead, the concept of nodedegree was introduced. And then the nodes region was divided based on the distance of clusterhead between the sink nodes to achieve multihop transmission, the energy loads proportionality of sensor node was provided. The simulation results show that the new strategy of algorithm achieves great advance in sensor and networks life time.
Key words: wireless sensor network; lowenergy adaptive clustering hierarchy(LEACH) protocol; energy constraint; cluster; nodedegree
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