Title: Energy-efficient connected coverage of discrete targets in wireless sensor networks

Authors: Mingming Lu, Jie Wu, Mihaela Cardei, Minglu Li

Addresses: Department of Computer Science, Central South University, China. ' Department of Computer Science and Engineering, Florida Atlantic University, USA. ' Department of Computer Science and Engineering, Florida Atlantic University, USA. ' Department of Computer Science and Engineering, Shanghai Jiao Tong University, China

Abstract: A major concern in wireless sensor networks is to maximise network lifetime (in terms of rounds) while maintaining a high Quality of Service (QoS) at each round, which includes target coverage and network connectivity. Due to the power scarcity of sensors, a mechanism that can efficiently utilise energy has a great impact on extending network lifetime. Most existing works concentrate on scheduling sensors between sleep and active modes to maximise network lifetime while maintaining target/area coverage and network connectivity. This paper generalises the sleep/active mode by adjusting sensing range to maximise the total number of rounds. Two distributed solutions have been proposed and simulation results confirm the efficiency of our solutions.

Keywords: wireless sensor networks; WSNs; energy efficiency; target coverage; sensor connectivity; network lifetime; wireless networks; quality of service; QoS; sensor scheduling; simulation.

DOI: 10.1504/IJAHUC.2009.024516

International Journal of Ad Hoc and Ubiquitous Computing, 2009 Vol.4 No.3/4, pp.137 - 147

Published online: 08 Apr 2009 *

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