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Coverage is a broad research area in wireless sensor networks. In order to maximize network lifetime for target coverage, we study the target coverage problem with multiple sensing ranges, which has been proved NP-complete. For CGH algorithm that introduces many redundant sensors in each round, we propose an Energy-efficient Centralized Greedy and Heuristic algorithm (ECGH), which introduces a concept...
Data gathering is a broad research area in wireless sensor networks. The basic operation in sensor networks is the systematic gathering and transmission of sensed data to a sink for further processing. The lifetime of the network is defined as the time until the first node depletes its energy. A key challenge in data gathering without aggregation is to conserve the energy consumption among nodes so...
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