Abstract
Recently energy-efficient duty cycle design for wireless sensor networks has become popular. In target-based applications, wireless sensors are deployed to monitor target points. In such networks, only a set of nodes are scheduled for monitoring and the remaining nodes are sent to sleep mode to conserve energy. Delay-aware mobile sink path, target coverage, and fault tolerance are very essential for energy-efficient data delivery in critical target applications. In the proposed work we aim to reduce the number of nodes scheduled for target coverage while ensuring complete coverage and connectivity through gathering points. The node selection for coverage is done by gathering points based on residual energy, node density, target coverage, and distance which are essential aspects for ensuring coverage and reducing energy consumption. Further, a delay-aware mobile sink trajectory is formed using the traveling salesman problem for data collection. Distributed fault recovery method is developed which ensures the recovery of orphan member node formed due to failure of Gathering points and rescheduling if a node fails while covering a target. The proposed method is compared with existing algorithms through simulations. Results show the efficiency of the proposed method called ETCAT in terms of network lifetime, energy consumption, packet delivery, and coverage. The proposed method has 17% better lifetime than the existing techniques.
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Bhasgi, S.S., Terdal, S. Energy and target coverage aware technique for mobile sink based wireless sensor networks with duty cycling. Int. j. inf. tecnol. 13, 2331–2343 (2021). https://doi.org/10.1007/s41870-021-00794-9
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DOI: https://doi.org/10.1007/s41870-021-00794-9