LOCALIZATION ALGORITHM USING VARYING SPEED MOBILE SINK FOR WIRELESS SENSOR NETWORKS

Localization of sensor nodes is important in many aspects in wireless sensor networks. The knownlocation of sensor node helps in determining the event of interest. A mobile sink is introduced to track theevent driven sensor nodes in the path of the event, thus conserving energy and time. We present a novelrange based localization algorithm which helps the mobile sink to compute the location of the sensornodes efficiently. The data transfer from the mobile sink and the sensor nodes is used to estimate thesensor location. The sensor nodes do not need to spend energy on neighbouring interaction forlocalization. The localization mechanism has been implemented in TOSSIM. The simulation results showthat our scheme performed better than other range-based schemes