Optimality of Homogeneous Sensing Range Assignment in Large-Scale Wireless Sensor Network Deployments

• Published in: IEEE communications letters Vol. 16; no. 9; pp. 1489 - 1491
• Main Author: Arifler, D.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.09.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Ad hoc networks; Applied sciences; Boolean model; coverage; Detection; Detection, estimation, filtering, equalization, prediction; Exact sciences and technology; Heterogeneity; Information, signal and communications theory; Minimization; Network topology; Networks; Optimization; optimization theory; Power demand; Sensors; Services and terminals of telecommunications; Signal and communications theory; Signal, noise; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Telemetry. Remote supervision. Telewarning. Remote control; Wireless communication; Wireless sensor networks; wireless sensor networks; Wireless telecommunication; Measurement sensor; Coverage; optimization theory; Optimization; Remote sensing; Boolean model; Heterogeneity; Upper bound; Wireless network; Sensor array; Signal detection
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2012.073112.121313

Minimization of uncovered area fraction subject to a power constraint and minimization of power requirement subject to an upper limit for uncovered area fraction are considered for large-scale wireless sensor networks. Analysis shows that deploying sensors with homogeneous sensing ranges is optimal with respect to the formulated optimization problems. As such, deployment of multi-tier hierarchical networks of sensors with differing sensing capabilities may not improve coverage when a network-wide power constraint is present. In addition, heterogeneity does not help in reducing network-wide power requirement when there is a coverage constraint.