基于冗余节点的LEACH协议的改进

摘要

无线传感器网络中LEACH协议是一种典型的能有效延长网络生命周期的节能通信协议。因为其优秀的节能效果和其简单的规程得到了广泛的认可。但是LEACH簇头算法存在簇头开销大、簇头没有确定的数量和位置等不足。而在成簇后的稳定阶段,节点通过一跳通信将数据传送给簇头,簇头也通过一跳通信将聚合后的数据传送给基站,这样会造成簇头节点负载过重。针对无线传感器网络中节点能量有限且密集布点时存在大量冗余节点的情况,提出了基于冗余节点的LEACH协议的改进。仿真实验结果表明,冗余节点的利用可以有效提高LEACH协议的性能,减少了簇头节点能量的消耗,延长了无线传感器网络的生命期。%LEACH protocol is a typical network that can effectively extend the life cycle of energy-saving protocol in wireless sensor networks.Because of its excellent energy efficiency and its simple procedure,it has been widely recognized.LEACH cluster head algorithm,but there is a large overhead of cluster head,cluster head does not determine the number and location of such deficiencies.After the stable phase cluster node by hop communication to transfer data to cluster head and cluster head can communicate through the hop the aggregated data to the base station,this will result in overloading the cluster head node.This wireless sensor network node for energy-intensive distribution is limited and there are a large number of redundant nodes when the situation presented based on redundant nodes in LEACH protocol improvements.Simulation results show that the use of redundant nodes can effectively improve the performance of LEACH protocol,reducing the energy consumption of cluster head node to extend the lifetime of wireless sensor networks.