A Novel Energy Efficient Topology Control Scheme Based on a Coverage-Preserving and Sleep Scheduling Model for Sensor Networks

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Shi, Binbin ; Wei, Wei ; Wang, Yihuai ; Shu, Wanneng (2016)
  • Publisher: MDPI
  • Journal: Sensors (Basel, Switzerland), volume 16, issue 10 (issn: 1424-8220, eissn: 1424-8220)
  • Related identifiers: pmc: PMC5087490, doi: 10.3390/s16101702
  • Subject: sleep scheduling scheme | Emerging Sensor Networks | TP1-1185 | energy efficient topology control techniques | Chemical technology | coverage-preserving | cloud model | Article

In high-density sensor networks, scheduling some sensor nodes to be in the sleep mode while other sensor nodes remain active for monitoring or forwarding packets is an effective control scheme to conserve energy. In this paper, a Coverage-Preserving Control Scheduling Scheme (CPCSS) based on a cloud model and redundancy degree in sensor networks is proposed. Firstly, the normal cloud model is adopted for calculating the similarity degree between the sensor nodes in terms of their historical data, and then all nodes in each grid of the target area can be classified into several categories. Secondly, the redundancy degree of a node is calculated according to its sensing area being covered by the neighboring sensors. Finally, a centralized approximation algorithm based on the partition of the target area is designed to obtain the approximate minimum set of nodes, which can retain the sufficient coverage of the target region and ensure the connectivity of the network at the same time. The simulation results show that the proposed CPCSS can balance the energy consumption and optimize the coverage performance of the sensor network.
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