Handling Mobility in Wireless Sensor and Actor Networks

— In Wireless Sensor and Actor Networks (WSANs), the collaborative operation of sensors enables the distributed sensing of a physical phenomenon, while actors collect and process sensor data and perform appropriate actions. WSANs can be thought of as a distributed control system that needs to timely react to sensor information with an effective action. In this paper, coordination and communication problems in WSANs with mobile actors are studied. First, a new location management scheme is proposed to handle the mobility of actors with minimal energy expenditure for the sensors, based on a hybrid strategy that includes location updating and location prediction. Actors broadcast location updates limiting their scope based on Voronoi diagrams, while sensors predict the movement of actors based on Kalman filtering of previously received updates. The location management scheme enables efficient geographical routing, and based on this an optimal energy-aware forwarding rule is derived fo...

• Type: Journal
• Year: 2010
• Where: TMC
• Authors: Tommaso Melodia, Dario Pompili, Ian F. Akyildiz
• Keywords: Actors, Location Management Scheme, Sensors, TMC 2010