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This paper proposes a method to deal with holes healing problems in wireless hybrid sensor networks. With recent advances in mobile platforms, hybrid sensor networks including static and mobile sensors are becoming very popular technology. In this paper, we investigate the coverage hole healing efficiency and propose a method to improve the efficiency. Specifically, mobile sensors can dynamically move to the un-coverage areas, improving both the coverage rate and the quality of service in WSN applications. During the process of mobile sensors moving, obstacles may exist in the environment. In order to reach the anticipated destination effectively, mobile sensors need to find an obstacle-free path for movement. To do this, we proposed an obstacle-free and geographic-free decentralized dispatch scheme (OGDD) to select and navigate the mobile sensors to participate the healing work. Experimental results reveal that the proposed scheme can be efficiently executed.

Decentralized Mobile Sensor Navigation for Hole Healing Policy in Wireless Hybrid Sensor Networks