关键词: 传感器网络, 睡眠机制, 网关选择机制, 分簇

Abstract: 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.

Key words: wireless sensor networks, sleeping mechanism, selective-gateway mechanism, clustering