一种改进的LEACH模型及其仿真分析  

An Improved LEACH Model and Simulation Analysis

作　　者：孙鹏飞[1] 王小明[1] 刘丁[1] 

机构地区：[1]陕西师范大学计算机科学学院,陕西西安710062

出　　处：《计算机技术与发展》2012年第5期105-108,共4页Computer Technology and Development

基　　金：国家自然科学基金(60773224;60970054);教育部科学技术研究重点项目(107106);教育部留学回国人员科研启动基金

摘　　要：为了最大限度地延长无线传感器网络生命周期,对无线传感器网络传统路由算法低功耗自适应聚类LEACH进行改进,改进后的算法命名为LEACH-EC。在广播阶段选取簇头节点时引入高概率选取机制,根据节点的剩余能量和节点的集中度选取簇头节点,选取的簇头节点兼顾了节点剩余能量和节点分布状况。实验结果表明,LEACH-EC算法选取的簇头节点性能较优,能有效地减少簇内节点传输能量消耗。因此,LEACH-EC算法能够均衡无线传感器网络能耗负载,延长无线传感器网络生命周期。To prolong the network lifetime effectively, the traditional low energy adaptive clustering hierarchy algorithm can be improved in WSN,improved algorithm named LEACH-EC. A high-probability selecting mechanism is introduced to select the clustering head node at broadcasting phase. This new algorithm for wireless sensor network main difference from traditional LEACH is that the LEACH -EC considers the node＇ s remaining energy and the node＇ s location. Simulation results show that the LEACH-EC algorithm can reduce and balance the energy consumption of nodes, and prolong the network lifetime more effectively than the traditional LEACH.

关 键 词：无线传感器网络 低功耗路由 剩余能量 节点集中度 簇头选取 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]