In the wireless sensor network, coverage area may be enhanced after an initial deployment of sensors. Though, some research works propose how to decrease the coverage hole by increasing sensing range or movement assisted sensor deployment, these are not suitable for energy constraint wireless sensor network, as longer mobility distance or higher power level consume more energy. In this paper, we address the increasing coverage area through smaller mobility of nodes. We find out the coverage hole in the monitoring region, which is not covering by any sensing disk of sensor. Then, we address the new position of mobility nodes to increase the coverage area. The simulation result shows the mobile nodes can recover the coverage hole perfectly. The coverage holes is recovered by mobility on the existing recovery area, which cannot be lost. Moreover, hole detection time in our proposed protocol is better than existing algorithm.

在无线传感器网络中，传感器的初始部署后，覆盖区域可能会增加。虽然，一些研究工作提出了如何通过增加感测范围或运动辅助传感器的部署来减少覆盖范围的方法，但这些方法不适用于能量受限的无线传感器网络，因为更长的移动距离或更高的功率水平会消耗更多能量。在本文中，我们通过较小的节点移动性来解决覆盖范围不断扩大的问题。我们在监测区域中发现了覆盖孔，该覆盖孔未被传感器的任何传感盘覆盖。然后，我们解决了移动性节点的新位置，以增加覆盖范围。仿真结果表明，移动节点可以很好地恢复覆盖孔。覆盖孔是通过现有恢复区域上的移动性恢复的，不会丢失。此外，