An efficient fuzzy localization approach in Wireless Sensor Networks

A successful node localization is of great importance to design efficient localization algorithms in Wireless Sensor Networks (WSNs). A proper node deployment can assist in routing, data fusion and communication in large scale ad hoc networks. Furthermore, it can extend the lifetime of WSNs by minimizing energy consumption. In this paper, we propose range-free localization using Fuzzy logic to achieve a more optimum solution. We model edge weights using Fuzzy logic system, which utilize the current value of Received Signal Strength Indicator (RSSI) and the Link Quality Indicator (LQI) from the anchor nodes for deciding location of sensor nodes. We have implemented our approach as a TinyOS module, and evaluated it through extensive TOSSIM simulations. Simulation results have shown promising results and demonstrate the effectiveness of the proposed approach.