Journal of Computer Applications

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Clustering hierarchy tree routing algorithm based on LEACH

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  • Received:2008-04-17 Revised:2008-05-29 Online:2008-10-01 Published:2008-10-01
  • Contact: Chun-Yan SONG

CHT_LEACH——基于LEACH的聚类分层树路由算法

宋春艳 张华忠 张秀阳   

  1. 山东大学计算机科学与技术学院 山东大学计算机科学与技术学院
  • 通讯作者: 宋春艳

Abstract: Considering the characteristics of sensor nodes' limited energy and limited transmission radius, the clustering hierarchy tree routing algorithm based on LEACH was proposed. In cluster construction stage, the optimal candidate cluster heads would become the final cluster heads, which guaranteed the distance between any two heads was far enough and neither of them was in the same area of radius, so the cluster heads were uniformly distributed in the network. In the intercluster communication, cluster heads form a hierarchical tree and the root was Base Station (BS), which reduced the energy consumption of direct data transmission from the head to BS, thereby prolonging the life cycle of the network.

Key words: wireless sensor network, candidate cluster head, final cluster head, hierarchy tree

摘要: 针对传感器节点能量及传输半径有限的特点,提出一种基于LEACH的聚类分层树路由算法CHT_LEACH。在簇形成阶段,通过候选簇首到最终簇首的择优选择,使网络中任意两个簇首都不在各自的簇半径之内,避免两簇首距离太近,达到簇首分布均匀的目的。在簇间通信阶段,建立以基站(BS)为根的分层树,减少了簇首直接传送数据到BS所需能耗,从而延长了网络的生命周期。

关键词: 无线传感器网络, 候选簇首, 最终簇首, 分层树