MOBILITY-ASSISTED COOPERATIVE LOCALIZATION SCHEME FOR WIRELESS SENSOR NETWORKS

In this paper, we propose a novel cooperative localization algorithm which can be effectively used in mobility-assisted wireless sensor networks (WSNs). We propose an attractive movement strategy with mobile elements (MEs) to improve the network performance and address limitations of static WSNs in node localization. In our scheme, a mobile sensor node cooperates with static sensor nodes and moves actively to construct virtual anchor nodes. The localization accuracy of the proposed algorithm is further improved by active movement of ME with low communication traffic and computing complexity. It minimizes the communication cost and improves the localization performance simultaneously via using ME and our proposed virtual anchor nodes. Simulation results demonstrate the efficiency of our proposed algorithm.