LEACH路由协议最优簇头数计算方法

Calculation method for optimal number of cluster heads of LEACH routing protocol

针对计算无线传感器网络的LEACH路由协议最优簇头数时,只考虑了稳定传输阶段的能量损耗,而忽略了建立阶段的能量损耗,从而导致节点加快死亡、网络能量利用率低的问题,提出了一种改进的最优簇头数计算方法。该方法根据所有节点在一轮消耗的总能量,从能量消耗最小的角度推算出了最佳的簇头数范围,通过控制簇头的数量来改善网络的性能。MATLAB仿真结果表明,该方法均衡了网络中的能量消耗,延长了网络的寿命。

While calculating the optimal number of cluster heads of LEACH routing protocol in wireless sensor networks, there is a problem that it only considers the energy at steady state phase and ignores the energy at cluster set-up phase, which causes accelerated death of the nodes and low energy use of the network. This paper proposes an improved calculation method for optimal number of cluster heads. This method is derived from the total energy dissipation of a round, and it improves the network performance by controlling the optimal number of cluster heads. MATLAB simulation results show that it balances the energy consumption of the network and extends the network＇s life-span.