An active node set maintenance scheme for distributed sensor networks

Abstract

In this paper, we propose an energy-efficient coverage maintenance scheme for prolonging the lifetime of the sensor networks. Researchers are actively exploring advanced power conservation approaches for wireless sensor network and probabilistic approaches among them are preferred due to advantages of simplicity. However, these probabilistic approaches have limited usefulness because they can not ensure full area coverage. In the proposed scheme, each node computes the probability through the densities of its own coverage and keeps it adaptively to the report history. The performance of proposed scheme is investigated via computer simulations. Simulation results show that the proposed scheme is very simple nevertheless efficient to save the energy. © Springer-Verlag Berlin Heidelberg 2006.