Distributed Hybrid Coverage Hole Recovery in Wireless Sensor Networks

Publisher:
IEEE
Publication Type:
Journal Article
Citation:
IEEE Sensors Journal, 2016, 16 (23), pp. 8640 - 8648
Issue Date:
2016-12-01
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Coverage Holes (CHs) can compromise the reliability and functionality of wireless sensor networks (WSNs). The recovery of CHs is challenging, especially in distributed applications where sensors have little knowledge about other sensors' actions. We propose a new game theoretic approach for recovering the CHs in a distributed manner. The key idea is that we formulate a potential game between the sensors, where each mobile sensor in the network only depends on local knowledge of its neighbouring nodes and takes CH recovery actions recursively with global convergence. An appropriate combined action of physical relocation and sensing range adjustment can be taken by each sensor to reduce the CHs in an energy-efficient way. Simulation results show that the proposed game theoretic approach is able to substantially increase network lifetime and maintain network coverage in the presence of random damage events, as compared to the prior counterpart(s).
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