无线传感器网络中基于距离的簇头选择优化研究

Distance based for optimal performance of cluster head selection in Wireless Sensor Networks

基于集群路由协议的核心实际上是簇头(CH)选择的过程,该过程要求能量消耗能够均匀分布在每个传感器节点上,以求延长传感器网络的生命周期.提出了一种新的分布式簇头选择算法(LEACH-DS),将从传感器到基站的距离作为关键参数考虑其中,以最优地均衡消耗在每个传感器上的能量.仿真结果表明,对比原LEACH算法,新算法的网络生存周期要比原LEACH的网络生存周期有效提高10%,尤其是在节点到基站距离较远情况下,有更好的实际和应用价值.

The core of cluster - based routing protocols is cluster head （CH） selection procedure, and it allows distribution of energy consumption among each sensor node, so as to prolong the lifespan of a sensor network. In this paper, we propose a new distributed algorithm （ LAECH - DS）, which takes into account the distances from sensors to a base station, so it can optimally balance the energy consumption. Simulation results show that the proposed algorithm outperforms LEACH with network lifespan improved by 10%. Especially, under the condition of farther distance nodes to the base station, it has a better practical research and application value.