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投稿时间：2014-06-25 修订日期：2015-01-08
投稿时间：2014-06-25 修订日期：2015-01-08
中文摘要: 针对典型的分簇路由协议LEACH随机选择簇头和成簇后没有考虑簇内成员节点位置的问题，提出了LEACH-ED算法。该算法对簇头的选择机制进行了优化，既考虑了节点能量，又能同时判断簇内成员节点与sink节点的距离。当某些簇内成员节点与sink节点距离较近时，不需经过簇头节点，而是直接和sink节点进行信息传递。仿真结果表明，改进的LEACH-ED算法网络生命周期与LEACH协议相比提高了近50%，同时网络中节点传输数据的能力也得到大幅度提高。
Abstract:In order to treat the problems of the blindness of cluster head selection and the imbalance of energy consumption in the cluster in LEACH，an improved algorithm LEACH-ED based on nodes,residual energy and distance factor of inter-cluster communication was proposed．The cluster head election mechanism based on the estimate of the node residual energy was optimized．Both the energy of the nodes and the distance between the cluster member nodes and the sink node were considered.The cluster member nodes communicated with sink node directly rather than culster head nodes，which were closer to the sink node than culster head．Compared with LEACH protocol,the results of simulation showed that the improved algorithm prolongs the network’s lifetime nearly 50 percent and the ability of data transmission of nodes is improved greatly.
文章编号：201400696 中图分类号： 文献标志码：
基金项目:国家自然科学基金资助项目(61107040)
作者简介:
引用文本：
董颖,苏真真,周占颖,肖匡心.一种基于节点剩余能量和位置的LEACH改进算法[J].工程科学与技术,2015,47(2):136-141.
Dong Ying,Su Zhenzhen,Zhou Zhanying,Xiao Kuangxin.An Improved LEACH Algorithm Based on Nodes’ Remaining Energy and Location[J].Advanced Engineering Sciences,2015,47(2):136-141.
引用文本：
董颖,苏真真,周占颖,肖匡心.一种基于节点剩余能量和位置的LEACH改进算法[J].工程科学与技术,2015,47(2):136-141.
Dong Ying,Su Zhenzhen,Zhou Zhanying,Xiao Kuangxin.An Improved LEACH Algorithm Based on Nodes’ Remaining Energy and Location[J].Advanced Engineering Sciences,2015,47(2):136-141.
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