一种基于睡眠和网关选择机制的分簇协议

The clustering protocol based on a sleeping and selective-gateway mechanism

基于聚簇的思想,协议引入节点的随机睡眠机制和网关选择机制,提出一种适用于大规模无线传感器网络的协议SSGM.采用被动分簇策略来构建网络拓扑,簇头选举采用"先声明者胜"机制;网关的选择是根据网络的健壮性和能量均衡的原则确定;并且在保证相对较高覆盖率的基础上选择某些符合条件的节点进入睡眠状态,协议减少了不必要的能量消耗并降低了发生信号冲突的可能性.SSGM协议充分考虑了网络的健壮性、节点能耗的均衡性与节省性,能够有效地延长网络的生命期.

Based on the concept of clustering, this protocol adopts a kind of sleeping mechanism and selective-gateway mechanism. A protocol used for large-scale wireless sensor networks-SSGM was proposed. This protocol adopts the passive clustering strategy to construct network topology. The selection of cluster head takes a mechanism, which is called ＂first declaration wins＂. The gateway was selected according to the rule of the robust network and the equalization of energy consumption. Based on the assurance of high rate of coverage, some nodes were selected to keep sleeping, which accord with conditions. So this protocol can reduce unnecessary consumption of energy and the possibility of signal collision. Taking into account the robust network and the equalization and economy of energy consumption, SSGM can effectively prolong the lifetime of the network.