Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/11758
Title: A novel differentiated coverage-based lifetime metric for wireless sensor networks
Authors: Nurcan-Atceken, Derya
Altin-Kayhan, Ayşegül
Tavlı, Bülent
Keywords: Wireless sensor networks
Network lifetime
Target coverage
k-coverage
Connectivity
Role-assignment
Mixed integer programming
Target Coverage
K-Coverage
Maximization
Connectivity
Tradeoff
Design
Publisher: Elsevier
Abstract: This paper delves into optimizing network lifetime (NL) subject to connected-coverage requirement, a pivotal issue for realistic wireless sensor network (WSN) design. A key challenge in designing WSNs consisting of energy-limited sensors is maximizing NL, the time a network remains functional by providing the desired service quality. To this end, we introduce a novel NL metric addressing target-specific coverage requirements that remedies the shortcomings imposed by conventional definitions like first node die (FND) and last node die (LND). In this context, while we want targets to be sensed by multiple sensors for a portion of the network lifetime, we let the periods, during which cells are monitored by at least one sensor, vary. We also allow the ratios of multiple and single tracking times to differ depending on the target and incorporate target-based prioritization in coverage. Moreover, we address role assignment to sensors and propose a selective target- sensor assignment strategy. As such, we aim to reduce redundant data transmissions and hence overall energy consumption in WSNs. We first propose a unique 0-1 mixed integer programming (MIP) model, to analyze the impact of our proposal on optimal WSN performance, precisely. Next, we present comprehensive comparative studies of WSN performance for alternative NL metrics regarding different coverage requirements and priorities across a wide range of parameters. Our test results reveal that by utilizing our novel NL metric total coverage time can be improved significantly, while facilitating more reliable sensing of the target region.
URI: https://doi.org/10.1016/j.adhoc.2024.103636
https://hdl.handle.net/20.500.11851/11758
ISSN: 1570-8705
1570-8713
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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