Lower-Priority-Triggered Distributed MAC-Layer Priority Scheduling in Wireless Ad Hoc Networks

One of the key issues in supporting real-time and mission-critical applications on wireless ad hoc networks is how to honor the prioritization requirements of different flows at the MAC-layer while being fair to the flows within the same priority level. In response to this, researchers have proposed various MAC-layer prioritization mechanisms. These mechanisms try to allocate more bandwidths to the higher priority flows than that to the lower priority flows. However, this is often not enough to meet the requirements of higher priority flows, particularly when the low priority traffic is overwhelming.