计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (17): 117-120.DOI: 10.3778/j.issn.1002-8331.2010.17.033

• 网络、通信、安全 • 上一篇    下一篇

无线传感器网络LEACH协议的改进

刘玉华1,赵永锋1,许凯华2,高景菊2

  

  1. 1.华中师范大学 计算机科学系,武汉 430079
    2.华中师范大学 数字空间研究中心,武汉 430079
  • 收稿日期:2008-12-02 修回日期:2009-02-24 出版日期:2010-06-11 发布日期:2010-06-11
  • 通讯作者: 刘玉华

Improvement of LEACH in wireless sensor networks

LIU Yu-hua1,ZHAO Yong-feng1,XU Kai-hua2,GAO Jing-ju2   

  1. 1.Computer Science Department,Huazhong Normal University,Wuhan 430079,China
    2.Research Center of Digital Space Technology,Huazhong Normal University,Wuhan 430079,China
  • Received:2008-12-02 Revised:2009-02-24 Online:2010-06-11 Published:2010-06-11
  • Contact: LIU Yu-hua

摘要: 延长传感器网络的生存周期,降低传感器节点的能耗成为无线传感器网络(WSN)研究的重点。基于LEACH 协议中簇头生成算法提出了改进、调整节点竞选簇头的阀值函数,并在非簇头节点选择适合自己的最优簇头时综合考虑了候选簇头节点的剩余能量以及距基站的距离等因素,给出了新的成簇机制的适合因子的计算公式。仿真结果表明,新型簇首选择机制能够有效平衡节点的能耗分布,延长节点与网络的寿命。

关键词: 无线传感器网络, 改进的低功耗自适应集簇分层型协议, 簇头选择, 负载均衡, 适合因子

Abstract: In recent years,as the development of wireless sensor network,people do some deep researches on cluster-based protocol,most around the prolongation of the lifetime of WSN and decline of energy consumed by the sensors.This paper analyses the cluster-heads generated arithmetic among LEACH and presents improved approach,adjusts the node’s threshold function chose to be cluster-head and considers comprehensive node’s residual energy and distance to base-station.Then their performance is compared.The simulation results show that the new strategy of cluster-heads election achieves great advance in sensor and network’s life-time.

Key words: Wireless Sensor Networks(WSN), Modified-Low Energy Adaptive Clustering Hierarchy(M-LEACH), cluster-head selection, load balancing, fitting factor

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