无线传感器网络泊松分布最优簇首数目的研究

Poisson Distribution Optimal Number of Cluster Heads in Wireless Sensor Networks

在无线传感器网络分簇路由协议中,簇首节点通常会消耗更多的能量。簇首节点过多或过少都会增加网络能耗。因此,为延长整个网络的生存周期,需要合理设置簇首节点的个数。在节点服从二维泊松分布的基础上,为最小化网络能耗,提出了一种求解网络最优簇首数目的方法。网络仿真表明,簇首个数为最优簇首数时,整个网络能量消耗最低。将求解的最优簇首数用于LEACH协议中,不仅延长了第一个节点的死亡时间,也提高了整个网络的生存周期。

In wireless sensor network clustering routing protocol,the cluster-head nodes usually consume more energy,and too many or too few cluster-head nodes would increase the network energy consumption.Therefore,in order to extend the life cycle of the entire network,the number of cluster-head nodes needs to be set reasonably.Based on the two-dimensional Poisson distribution of the nodes,in order to minimize the energy consumption of the network a method for solving the optimal the optimal number of cluster heads in the network is proposed.Network simulation indicates that when the number of cluster heads is the optimal number,the energy consumption of the entire network is the lowest.The optimal number of cluster heads used in the LEACH protocol not only extends the death time of the first node,but also improves the life cycle of the entire network.