Energy-efficient connected coverage of discrete targets in wireless sensor networks. (9th April 2009)

• Record Type: Journal Article
• Authors: Lu, Mingming; Wu, Jie; Cardei, Mihaela; Li, Minglu
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 4:Number 3/4(2009)
• Page Start: 137
• Page End: 147
• Publication Date: 2009-04-09
• Subjects: wireless sensor networks -- WSNs -- energy efficiency -- target coverage -- sensor connectivity -- network lifetime -- wireless networks -- quality of service -- QoS -- sensor scheduling -- simulation; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

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.