Abstract:

localization scheme using mobile bacon nodes is proposed. One or several mobile bacon nodes traverse the whole physical space of the sensor area by straight line or random walking mode. Mobile beacon nodes periodically broadcast their physical location information which can be received by unknown nodes. The locations of unknown nodes can be estimated from bound lines which are derived from the broadcast information. Extensive simulations show that the proposed scheme achieves significantly better performance than conventional typical algorithms in terms of computation cost, localization accuracy and convergence.

Key words: Wireless sensor networks, node localization, mobile beacons, range-free