A new geocast protocol for a moving region in sensor networks

Abstract

We propose a new geocast protocol for a moving region in sensor networks. The proposed protocol builds a multicast tree connecting geocast nodes using an energy efficient broadcasting technique and modifies the tree as the geocast region moves. We do not make any restrictions on the shape of the geocast region and do not assume that the movement of the object is predictable. The proposed protocol reduces the energy consumption during the phase of sending commands to the sensor nodes in a geocast region and also facilitates in-network data aggregation and, therefore, saves energy during the phase of reporting sensor data.