无线传感网络LEACH协议的优化研究

LEACH( Low-Energy Adaptive Clustering Hierarchy低功耗自适应分簇)算法可以有效地解决传感器节点能量限制的问题，显著地延长整个网络的生命周期。但在分簇簇头的选择过程中仅考虑此节点是否在之前的轮中担任过簇头节点，并未考虑节点剩余的能量与其所处的位置，使得簇头的选择并非最优。针对这种情况，本文在原有LEACH路由算法的基础上从节点剩余能量与节点分布位置两方面对其进行优化，提出了一种新的路由优化算法为I-LEACH。仿真结果显示I-LEACH较LEACH协议延长了网络生存周期，降低了网络总体能耗，使无线传感网的整体性能得到一定提升。

The Optimization Research of LEACH Protocol In Wireless Sensor Network

LEACH ( Low-Energy Adaptive Clustering Hierarchy) can effectively solve the problem which is the energy of sensor node is limited,and significantly extend the lifetime of the whole network. But in the process of the election of cluster head ( CH) only consider whether this node in the previous round was served as CH nodes,don’ t consider the node residual energy and location,making CH selection is not optimal. In view of this kind of situation,this paper have improved LEACH routing algorithm from the as-pects of node location and residual energy of nodes, therefore an optimized algorithm is proposed and called I-LEACH. The simulation results show that I-LEACH extend the network lifetime much longer than LEACH and reduce the network total energy consumption,so making the performance of WSN have been promoted.