A Service Differentiation MAC Protocol for Multimedia Sensor Networks
Zhao Lian · Jisuanji gongcheng · 2014
In order to deliver multiple types of traffic with different requirements in highly resource constrained Wireless Sensor Networks(WSNs), this paper proposes QA-MAC, a QoS-aware and priority based MAC protocol for Wireless Multimedia Sensor Networks(WMSNs). QA-MAC aims to increase the utilization of the channel with effective service differentiation mechanisms, adaptive contention window and dynamic duty cycle according to different priority flows. It is able to ensure the demand of real-time traffic transmission. Simulations show significant improvements in terms of latency and data delivery. Compared with the S-MAC protocol, as the network load increases, the average packet transmission rate can be increased by more than 30% and it can be applied in many fields.