Mobile anchor path planning in wireless sensor networks

Wireless sensors are devices with low power capabilities. In many application require the sensor locations. In order to locate them different scheme are available. Basically they are range based and range free schemes. Range based schemes are more accurate but very complex and expensive. Other path planning scheme which modifies the path of the mobile node or anchor instead of random movement like SCAN, DOUBLE SCAN and HILBERT exist. A single mobile node moves through the sensing area. The path of the mobile node is in such a way so as to optimize the error and locate the sensors in the sensing field. Obstacles in the sensing field are also considered. The locations of almost all sensors in the field are located using a single mobile anchor and the mechanism is implemented in NS2.