An Effective Algorithm for Guiding Mobile Nodes in Wireless Sensor Networks

In order to better control the mobile nodes in wireless sensor networks, an effective navigation algorithm is proposed in this paper. The static nodes are used as beacons. The methods of topology credits and TDOA (time difference of arrival) are adopted. Credits of nodes are used to create topology of the networks. Meanwhile, the TDOA method is used to calculate the distance of neighbor nodes to determine the next turning angle. Simulation and experimental results show that the proposed algorithm is effective in navigating the mobile nodes precisely to the region of interest. The comparison between the proposed algorithm and the VFF (virtual force field) method shows that the former has better performance in guiding mobile nodes in wireless sensor networks.