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

Authors:
Mingming Lu;Jie Wu;Mihaela Cardei;Minglu Li
Affiliations:
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
Venue:
International Journal of Ad Hoc and Ubiquitous Computing
Year:
2009

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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.