Qiyue Li

A queue management MAC protocol for Delay-Tolerant Mobile Sensor Networks

For Delay-Tolerant Mobile Sensor Networks with highly dynamic and sparse topology, a queue management MAC protocol (Q-MAC) is proposed in this paper. Via the scheme of data transfers initiated by the targeted sinker and dynamic queue management strategy, Q-MAC provides better network performance. Furthermore experimental results show that Q-MAC reaches to 46% decreases in packet drop probability, 79% increase in system throughput, and 25% decrease in the mean packet delay.

An energy-efficient MAC protocol using dynamic queue management for delay-tolerant mobile sensor networks.

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.