Statistical QoS Provisionings for Wireless Unicast/Multicast of Layered Video Streams

Date Added: Jan 2010
Format: PDF

Due to the highly-varying wireless channels, deterministic Quality of Service (QoS) is usually difficult to guarantee for real-time multi-layer video transmissions in wireless networks. Consequently, statistical QoS guarantees have become an important alternative in supporting real-time video transmissions. This paper proposes an efficient framework to model the statistical delay QoS guarantees, in terms of QoS exponent, effective bandwidth/capacity, and delay-bound violation probability, for multi-layer video transmission over wireless fading channels. In particular, a separate queue is maintained for each video layer, and the same delay bound and corresponding violation probability threshold are set up for all layers.