AN EFFICIENT MAC PROTOCOL FOR SUPPORTING QOS IN WIRELESS SENSOR NETWORKS
Yinghui Qiu · 2012
Wireless sensor network can be employed in wide range of application areas, such as target detection and tracking, military, and environmental monitoring. Media access control protocol is one of the most critical issues for wireless sensor network. A lot of efforts have been dedicated to MAC protocol and many MAC protocols have been proposed for different purposes. In this paper, a modified TDMA based MAC protocol is proposed. The proposed protocol support three different types of traffics and can assign slots for them flexibly. The proposed MAC protocol employs slots reuse scheme to dynamically use slots to transmit traffics and dynamically employs sleep and wake up scheme to reduce radio energy expenditure and then to extend lifetime of WSN network. Simulation results on numerous problem instances show efficiency of the proposed MAC protocol.