Energy-efficient connected coverage of discrete targets in wireless sensor networks
by Mingming Lu, Jie Wu, Mihaela Cardei, Minglu Li
International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC), Vol. 4, No. 3/4, 2009

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.

Online publication date: Wed, 08-Apr-2009

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