无线传感器网络中有效簇头选择方法研究

Study on an efficient method to select cluster head in wireless sensor networks

针对传统方法在选择簇头过程中高能耗、低数据量等缺点,提出一种基于传感器节点单位能耗进行簇头选择的新方法。该方法借助中央控制算法LEACH-C,通过将簇头节点分散在整个网络的方式形成节点集群,利用该方法形成集群的过程可以分为:初始候选节点的选择、能量计算、距离计算、能源成本函数的确定和集群形成等几个阶段。实验研究表明,与传统方法相比,利用该方法选择的簇头,能有效提升系统生存期、增加数据通信总量。

To solve the high energy dissipation and low amount of data communication in traditional method of cluster head selection, this paper proposes a new methodology for cluster head selection based on sensor nodes＇ energy per unit cost. In this method, the clusters are formed using the central control algorithm of LEACH-C by dispersing the cluster head nodes throughout the network, the process of the clusters＇ formation by the method can be divided into several stages which include the initial candidate node selection, energy calculation, distance calculation, determine the energy cost function and the cluster formation. The experimental shows that the proposed method, increases the system lifetime and maximizes data communication in comparison to the existing dominant approaches.