RSSI-based localization for wireless sensor networks with a mobile beacon

Localization is one of the fundamental issues in wireless sensor networks. Many approaches including range-based and range-free categories have been proposed to determine sensor node locations. The range-based algorithms often achieve higher accuracy, but they are easier to be interfered and an additional hardware is required. In this paper, we present a fast and simple localization scheme for wireless sensor networks, which is computed by simple operations with the specific approximate RSSI value on an accelerative signal attenuation model. Simulation results show that our scheme is very efficient and that the node positions can be determined accurately.