基于扇形分簇的无线传感器网络路由算法

摘要

无线传感网络中低功耗自适应聚类分簇(LEACH)路由算法等概率选取簇首节点,容易导致整个网络节点能量损耗出现极端化,减少网络生存时间.为此,提出一种针对簇首节点选取和分簇的改进LEACH算法.该算法把整个网络区域分为四个扇形区域,在每个区域内独立进行分簇路由;然后基站根据节点剩余能量和与基站的距离进行簇首节点选择,节点根据簇首节点和基站接收信号强度选择路由方式,以均衡网络能量消耗.仿真结果表明,改进LEACH算法的网络寿命是原有LEACH算法的150%,数据吞吐量提升了3倍.%The low energy adaptive clustering hierarchy(LEACH)routing algorithm for wireless sensor network selects the cluster head node by means of equal probability,which is easy to result in the extreme energy loss of the whole network nodes, and reduce the network lifetime. Therefore,an improved LEACH algorithm for the selection and clustering of the cluster head node is proposed. The whole network area is divided into four fan-shaped subareas with the algorithm to perform the clustering routing in each subarea independently. The cluster head node of the base station is selected according to the node residual ener-gy and distance to the base station. The routing mode of the node is selected according to the cluster head node and the received signal strength of the base station to balance the network energy consumption. The simulation results show that the network life-time of the improved LEACH algorithm is 150% of the original LEACH algorithm,and its data throughout is increased by three times.