基于间歇式的簇首选择的WSNs分层路由

Intermittent Cluster Head Selection clustering protocol in WSNs

为了降低无线传感网络(Wireless Sensor Networks, WSNs)中分簇路由的能耗,提出基于间歇式的簇头选择的能量感知的分簇路由(Intermittent Cluster Head Selection-based energy-aware clustering protocol, ICHS-CP)。ICHS-CP引用集中式分簇路由思想,它仅在每个轮群(Group of Rounds, GOR)的开始选择簇头,而不是传统集中协议每轮选择簇头,降低了重复CHs选择过程的能量成本。同时,基站保证了轮群的固定的簇头数,并基于六边形网络拓扑均衡簇头分布。仿真结果表明,提出的ICHS-CP协议提高了能量效率,延长了第一个失效节点的发生时间。

In Wireless Sensor Networks(WSNs),hierarchical clustering protocols such as Low Energy Adaptive Clustering Hierarchy(LEACH)are more energy efficient than flat routing protocols.Due to the random selection of Cluster Heads(CHs),LEACH has some deficiencies.Intermittent Cluster Head Selection-based energy-aware clustering protocol(ICHS-CP)is proposed in this paper.Based on centralized clustering protocols,ICHS-CP utilizes BS to perform CHs selection only once at the start of each GOR,not at each round as other conventional centralized protocols.Hence,the energy cost of the repetitive CHs selection process is significantly eliminated.Moreover,BS guarantees a fixed number of CHs and the uniform distribution of them at each round.Simulation results show that ICHS-CP protocol is able to improve energy efficient,and put off time of the first failed node.