Location discovery is a challenging task in a wireless sensor network. In this paper, we propose a protocol so that the devices that are part of a wireless sensor network may compute their own locations. In the proposed protocol, each anchor selects a region of its movement. which is based on its initial location. During the movement of an anchor, beacons are transmitted so that unlocalized sensors may compute their own locations using the locations of anchors and the distance estimates. To evaluate the performance of the proposed protocol, simulations are carried out. We observed that the proposed protocol performs well in terms of the localization error and the fraction of localized sensors.