基于泊松分布的无线传感器网络分簇协议性能优化

Performance Analysis of WSNs Clustering Protocol Based-on Poisson Distribution

针对LEACH协议中网络能量效率低的问题,提出了一种基于节点泊松分布的WSNs分簇协议性能优化方法。基于对协议中簇头、成员节点能耗和协议总能耗的分析,推导出优化的分簇数目和网络生命周期。然后基于节点泊松分布密度对网络性能进行优化分析。理论分析和仿真实验表明:适当增大节点泊松分布密度,并选取优化的分簇个数,能够有效改善网络的能耗性能,并可延长网络的生命周期。

Aiming at the problems of the lowly energy efficiency in LEACH protocol, we proposed an energy consumption mode of WSNs clustering protocol in the condition that sensor nodes followed the Poisson distribution. Firstly, we inferred the power consumption of cluster head, node and the clustering protocol. Secondly, the optimization analysis of cluster numbers based on the power consumption was carried out, and the network lifetime was calculated. Finally, we analyzed the network performance which was impacted hy sensor nodes Poisson distribution density. The theoretical analysis and simulation results show that both the energy performance and the network lifetime of WSNs clustering protocol could be improved effectively by increasing the node Poisson distribution density suitably and choose the optimal cluster numbers.