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Sensors 2011, 11(2), 1847-1864; doi:10.3390/s110201847
Article

An Energy-Efficient MAC Protocol Using Dynamic Queue Management for Delay-Tolerant Mobile Sensor Networks

1
, 2,* , 1
 and 2
Received: 15 November 2010; in revised form: 9 December 2010 / Accepted: 5 January 2011 / Published: 1 February 2011
(This article belongs to the Section Physical Sensors)
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Abstract: Conventional MAC protocols for wireless sensor network perform poorly when faced with a delay-tolerant mobile network environment. Characterized by a highly dynamic and sparse topology, poor network connectivity as well as data delay-tolerance, delay-tolerant mobile sensor networks exacerbate the severe power constraints and memory limitations of nodes. This paper proposes an energy-efficient MAC protocol using dynamic queue management (EQ-MAC) for power saving and data queue management. Via data transfers initiated by the target sink and the use of a dynamic queue management strategy based on priority, EQ-MAC effectively avoids untargeted transfers, increases the chance of successful data transmission, and makes useful data reach the target terminal in a timely manner. Experimental results show that EQ-MAC has high energy efficiency in comparison with a conventional MAC protocol. It also achieves a 46% decrease in packet drop probability, 79% increase in system throughput, and 25% decrease in mean packet delay.
Keywords: delay-tolerant mobile sensor networks; minimal probe frame; Wait to Send; Ready to Receive; queue management; priority; medium access control delay-tolerant mobile sensor networks; minimal probe frame; Wait to Send; Ready to Receive; queue management; priority; medium access control
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Li, J.; Li, Q.; Qu, Y.; Zhao, B. An Energy-Efficient MAC Protocol Using Dynamic Queue Management for Delay-Tolerant Mobile Sensor Networks. Sensors 2011, 11, 1847-1864.

AMA Style

Li J, Li Q, Qu Y, Zhao B. An Energy-Efficient MAC Protocol Using Dynamic Queue Management for Delay-Tolerant Mobile Sensor Networks. Sensors. 2011; 11(2):1847-1864.

Chicago/Turabian Style

Li, Jie; Li, Qiyue; Qu, Yugui; Zhao, Baohua. 2011. "An Energy-Efficient MAC Protocol Using Dynamic Queue Management for Delay-Tolerant Mobile Sensor Networks." Sensors 11, no. 2: 1847-1864.



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