Implementing localization scheme on ZigBee wireless sensor network

A localization scheme for wireless sensor networks is proposed in this paper. The proposed scheme is a range-free and anchor-free scheme; hence, only local interaction among sensor nodes is necessary for estimating the locations of the sensor nodes. This scheme employs the link quality indicator (LQI) and hop count between the sensor nodes for estimation. Our experiments involve the implementation of the proposed scheme on a ZigBee sensor module. The results of the experiments indicate that estimation can be successfully carried out for networks comprising three or four sensor nodes.