An Energy-Efficient Data Dissemination Protocol in Large-Scale Sensor Networks
一种大规模传感器网络节能数据发布协议

A critical issue in wireless sensor networks is energy-efficiently disseminating data from nodes to multiple sinks. Many data dissemination techniques have been proposed for sensor networks. However these protocols are based on flooding mechanism which wastes much precious energy. Some recent protocols have been proposed to reduce the flooding cost at different levels but can not guarantee the query success rate. In this paper, an energy-efficient data dissemination scheme DCS (diameter-chord scheme) is proposed which can reduce the energy consumption and improve the success rate as well. DCS exploits the fact that any chord in circularity vertically intersects with a diameter. Further more, Two-Phase protocol is proposed based on this dissemination scheme. This protocol works in two phases, and only when it is not successful in the first phase, the second is triggered. Two solutions are also proposed to deal with the delay of the Two-Phase. Extensive simulations and analysis are conducted to evaluate these protocols. The results show that the proposed protocols perform better than the peers.