基于非竞争式簇首轮转的WSNs分簇优化方法

摘要

The paper established an energy consumption model in order to improve the lower energy efficiency of nodes in LEACH protocol. A method of cluster—head rotation based on non — competitive mode was proposed, according to analysis result of the energy consumption difference value between the the different nodes and elected cluster—head. The means elected the cluster—head once only at the first round of each rotation cycle. Then the other nodes acted as a cluster —head by fixed rotary method in remaining round. Furthermore, reasonable collection times of data in each round also could effectively reduce the energy consumption of cluster—head election. Finally, the theoretical analysis and simulation results show that the power consumption performance of WSNs clustering was improved effective by this optimized clustering algorithm.%针对LEACH协议中节点网络能量效率低的问题,建立了分簇协议的能耗模型；基于对簇首竞选能耗和不同节点能耗差的分析,提出了一种基于非竞争式的WSNs簇首轮换方法:在每一个轮转周期的第一轮中竞选一次簇首,其余轮中采取固定轮转的方法依次让其它节点充当簇首；同时合理设置每轮中的数据收集次数,以便有效降低网络簇首竞选能耗；理论分析和仿真实验表明:改进的分簇算法能够有效地改善WSNs分簇协议的总能耗性能.