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ThinkMind // ICN 2014, The Thirteenth International Conference on Networks // View article icn_2014_3_10_30126


Coverage and Lifetime Optimization in Heterogeneous Energy Wireless Sensor Networks

Authors:
Ali Kadhum Idrees
Karine Deschinkel
Michel Salomon
Raphaël Couturier

Keywords: Wireless Sensor Networks; Area Coverage; Network Lifetime; Optimization; Scheduling.

Abstract:
One of the fundamental challenges in Wireless Sensor Networks (WSNs) is the coverage preservation and the extension of the network lifetime continuously and effectively when monitoring a certain area (or region) of interest. In this paper, a coverage optimization protocol to improve the lifetime in heterogeneous energy wireless sensor networks is proposed. The area of interest is first divided into subregions using a divide-and- conquer method and then the scheduling of sensor node activity is planned for each subregion. The proposed scheduling considers rounds during which a small number of nodes, remaining active for sensing, is selected to ensure coverage. Each round consists in four phases: (i) Information Exchange, (ii) Leader Election, (iii) Decision, and (iv) Sensing. The decision process is carried out by a leader node, which solves an integer program. Simulation results show that the proposed approach can prolong the network lifetime and improve the coverage performance.

Pages: 49 to 54

Copyright: Copyright (c) IARIA, 2014

Publication date: February 23, 2014

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-318-6

Location: Nice, France

Dates: from February 23, 2014 to February 27, 2014

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