Perception-Aware Multiple Scalable Video Streaming Over WLANs

In this letter, we consider how to efficiently transmit multiple video programs over IEEE 802.11e WLANs using scalable video coding technique. Scalable video offers flexibilities and functionalities for video adaptation according to the time-varying wireless channel conditions. We examine the perceptible quality impact of scalable video packets and maximize the minimum perceptible video utility of each scalable video stream. The quality of service is optimized by QoS mapping such that scalable video packets with higher impact on perceptible quality are better protected by the enhanced distributed channel access mechanism (EDCA). Using a MAXMIN strategy, we achieve fair distribution of videos to end users based on the spatial, temporal, and quality scalabilities offered by scalable video coding. Our simulation results show the efficacy and performance of the proposed approach.