Energy-balanced clustering routing protocol of two-layer hierarchy for wireless sensor networks
能耗均衡的无线传感器网络两级路由协议*

The most important problem of the clustering protocol for WSN is how to cluster all nodes with the optimization way, which can not only decrease the energy consumption of the nodes, but also balance the energy dissipation of the entire network. Therefore,this paper proposed a new centralized clustering protocol of two-layer hierarchy, which was compact, energy-aware and energy-consumption-balanced. In the lower layer of the protocol, the optimal cluster of all nodes using PSO algorithm was realized. And in the upper layer, the chief-cluster-head, which was responsible for collecting, aggregating the data of all cluster heads and sending the fused data to the base station, was selected. Simulation results demonstrate that the protocol can efficiently decrease the dead speed of the nodes and prolong the network lifetime.