无线传感网中基于能量矩阵的多簇头分簇算法

摘要

在能量异构的无线传感器网络环境下,提出了一种基于能量矩阵的剩余能量预测模型和新的聚簇路由协议.模型中引入卡尔曼过滤算法,协议中节点通过建立相邻节点剩余能量预测机制,使选举簇头节点的概率与节点当前剩余能量直接相关,以均衡节点的能量消耗,延长网络寿命.此外,还通过多簇头方法,提高数据传输可靠性.仿真实验结果表明,LEACH-EM协议在延长网络生命周期和减少能量消耗上比其他协议有了很大改善.%This paper proposes the remaining energy prediction model based on energy matrix and a novel clustering routing protocol in energy heterogeneous wireless sensor networks environment.The Kalman filtering algorithm is introduced into the model,in which a node,according to energy prediction mechanism,independently makes its decision to compete for becoming a master cluster head in order to improve energy efficiency and prolong system lifetime.In addition, this protocol selects multi-cluster-heads so that data transmission reliability is enhanced.The results of simulation show that LEACH-EM protocol is greatly improved upon other protocol in regard to extending network lifetime and reducing energy consumption.