基于能耗的无线传感器网络最优簇首数研究

在无线传感器网络中,如何减少系统能耗、延长网络生存时间是最具挑战性的问题之一。LEACH路由协议通过网络分簇和簇首循环,使网络能量负载平衡,从而达到降低能耗的目的。该协议的关键是簇首数的选择,其最优值可使网络能耗降到最低。在深入研究LEACH协议及其能量模型的基础上,提出了一种最优簇首数的估算算法,并通过蒙特卡洛仿真验证了该算法的正确性。所得结论对无线传感器网络结构和路由协议的设计具有指导作用。

Research on the number of optimal cluster heads of wireless sensor networks based on energy consumption

In wireless sensor networks,to extend the network lifetime by reducing energy consumption is one of the most challenging problems.Through network clustering and cluster head cycling,LEACH routing protocol can balance network energy’s load to reduce energy consumption.The key of this protocol is the selection of the number of cluster head.The optimal value of the number of cluster head can minimize the network energy consumption.On the basis of in-depth study of LEACH protocol and its energy model,an estimation algorithm of the optimal number of cluster heads is presented,and the correctness of this algorithm is verified through Monte Carlo simulation.The conclusions can be used to guide the design of the architecture and the routing protocol for wireless sensor networks.