摘要
分簇结构是大规模无线传感网的一种有效的拓扑管理方法。在这种结构下,由于簇头节点的能量消耗速率远远高于簇成员节点,需要做簇头轮换以平衡网络能量消耗。分析LEACH(Low Energy Adaptive Clustering Hierarchy)协议簇头选择算法的不足,结合节点自身的能量、节点到基站的距离及节点的分布情况,提出一种簇头选择的优化算法,并对该算法进行分析和仿真。实验结果表明,优化后的算法改进了簇头的分布方式,提高了负载均衡度,并延长了无线传感器网络的生存时间。
Clustering structure is an efficient topology management method in large-scale wireless sensor networks.For the reason that the cluster head depletes energy much faster than that of the cluster member,so rotation of cluster head is needed to balance the energy consumption for the whole network.In this article we analyse the shortness of LEACH protocol cluster head election algorithm,and then propose an optimised election algorithm taking into consideration the energy of the node itself,the distance from node to Base Station and the distribution of the node together,and carry out analyses and simulation of the new algorithm.Experimental results show that the optimised algorithm meliorates the distributions mode of the cluster head,improves the degree of load balance,and extends the node＇s life in wireless sensor network.
出处
《计算机应用与软件》
CSCD
北大核心
2012年第11期262-263,268,共3页
Computer Applications and Software
