关键词: 无线传感器网络, 高斯分布, 选择函数, 簇头, 节能

Abstract: For the problem of energy constrained in WSNs，clustering aggregation is usually used to reduce the transmission of data in order to achieve the purpose of energy saving.This paper presents a cluster-head selection algorithm on clustering network model based on Gaussian distribution，and constructs a probabilistic model of cluster head selection function.The model uses channel gain，residual energy，inter-sensor distance in a cluster and geographical location as parameters，and selects one cluster head node by comparison of the value of nodes’ probability function.The results show that the selection algorithm can improve network energy efficiency in a greater degree，extend the network lifetime.

Key words: Wireless Sensor Networks（WSNs）, Gaussian distribution, selective function, cluster heads, energy saving