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An Energy-Efficient MAC Protocol Using Dynamic Queue Management for Delay-Tolerant Mobile Sensor Networks
Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei, Anhui 230027, China
Department of Computer Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China
* Author to whom correspondence should be addressed.
Received: 15 November 2010; in revised form: 9 December 2010 / Accepted: 5 January 2011 / Published: 1 February 2011
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
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Cite This Article
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.
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.
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.