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At present, coverage, which is regarded as monitor of service quality, has been an essential problem of the Wireless Sensor Networks (WSNs). One of these research directions is to use less quantity of sensor nodes or shorter time to achieve the same effect under the premise of ensuring a certain quality of coverage by some algorithm strategies. As the nodes' deployment reflects the cost and performance of WSN, the covering control algorithms can greatly reduce the number of nodes, can also prolong the active time, and naturally can reduce the energy consumption of WSNs. In the WSN coverage research, these aspects need to be considered, including the nodes' deployment, the nodes' sensing and communication range, energy efficiency, the algorithm characteristics, and sensor mobility.
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