VDSPT: A Sensor-Actor Coordination Protocol for Wireless Sensor and Actor Network Based on Voronoi Diagram and Shortest Path Tree

Wireless sensor and actor network refers to a group of sensors and actors, which gather information in detection area and perform appropriate actions upon the event area, respectively. Just as in wireless sensor network (WSN), one of the most important objectives of designing coordination protocols in WSAN is to decrease energy consumption and prolong network lifetime. This paper proposes a sensor-actor coordination protocol for wireless sensor and actor network based on Voronoi diagram and shortest path tree (VDSPT). Network nodes are organized into some clusters based on weighted Voronoi diagram that every cluster includes an actor and some sensors. The operation of VDSPT protocol is divided into rounds and the shortest path trees (SPTs) for routing are dynamically generated according to network states in each round. The simulation results show that VDSPT protocol can improve the residual energy balance of actors and prolong network lifetime.