一种针对无线传感器网络LEACH协议的改进算法

针对传统LEACH协议在簇首选取的随意性，以及簇首节点将数据以单跳形式传输给汇聚节点造成能耗大的缺点。文中提出了改进协议,该算法在对簇头节点的选择时会将节点的剩余能量考虑进去，会在选择剩余能量最多，同时以其到汇聚节点距离小的节点作为下一跳来传输数据，以实现多个簇之间的路由数据传输。通过Matlab仿真可以知道，改进后的协议使整个传感器网络的能量消耗变得更加均衡，同时使整个网络的生存时间得到了15%的延长。

An Improved Algorithm for LEACH Protocol in Wireless Sensor Networks

The routing protocols of WSNs are one of the most hottest issues in related researchs fields .In view of the randomness of the traditional LEACH protocol in cluster head selection, and the disadvantages of the cluster head nodes delivering some data to the sink node by single hop, the article puts up with an improved protocol ,this algorithm will think remaining energy over in the select of cluster head.The article will choose the node .Its capacity of remaining energy is the biggest and the distance between it and sink mode is not long.This algorithm chooses it as next jump to realize data transferring between the clusters. Finally,through Matlab simulation ,we know that improved algorithm can make the consumpation of the whole wireless sensor network become more equalized,meanwhile,the lifetime of the network has been extended in 15%.