Energy-efficient area coverage by sensors with two adjustable ranges

Authors:
Vyacheslav Zalyubovskiy;Adil Erzin;Sergey Astrakov;Hyunseung Choo
Affiliations:
Sobolev Institute of Mathematics, Siberian Branch of the RAS, Novosibirsk, Russia;Sobolev Institute of Mathematics, Siberian Branch of the RAS, Novosibirsk, Russia;Russian State University of Trade and Economics, Kemerovo, Russia;School of Inform. and Comm. Eng., Sungkyunkwan University, Suwon, Korea
Venue:
WiOPT'09 Proceedings of the 7th international conference on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
Year:
2009

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Abstract

In wireless sensor networks, density control is an important technique for prolonging a network's lifetime. To reduce the overall energy consumption, it is desirable to minimize the overlapping sensing area of sensor nodes. In this paper, we study the problem of energy-efficient area coverage by the regular placement of sensors with adjustable sensing and communication ranges. We suggest a more accurate method to estimate efficiency than those currently used for coverage by sensors with adjustable ranges, and propose new density control models that considerably improve coverage using sensors with two sensing ranges. Calculations and extensive sim ulation show that the new models outperform existing ones in terms of various performance metrics.