Sensor Node Localization Study

The problem of localization becomes more and more important while the research of the wireless sensor networks become more deeply . Some problems can be solved well only when the sensor nodes know their position.In this paper the NLBRC algorithm and the MNPEBR algorithm is presented to stationary and mobile sensor nodes respectively . The NLBRC method runs by the means of broadcasting in different range . It has some character such as energy efficient , high accuracy , balanced payload and fitting random deploy etc . The active request is used into MNPEBR algorithm . There are some characters in MNPEBR such as low communication cost, high localization accuracy and small delay etc . At the end of this paper, a property system for sensor nodes localization is realized and the accuracy of position estimation and the cost of energy is given in the way of graph under different circumstance .