Distortion-aware video communication with pipeline forwarding
Mario Baldi, Juan Carlos De Martin, Enrico Masala, Andrea Vesco · 2006
This paper tackles the issue of optimizing the transport of video over packet networks with respect to both resource utilization and user perceived quality. Previous work showed that the quality of service requirements of multimedia applications can be satisfied by pipeline forwarding of packets. However, the current Internet is not based on such technology and its incremental introduction raises questions on how to handle video packets generated by pipeline forwarding unaware sources at the interface between a subnetwork deploying conventional packet scheduling techniques and one implementing pipeline forwarding. This work proposes to use the perceptual importance of the carried video samples to determine which packets shall be transferred with pipeline forwarding - thus receiving deterministic service - and which with a traditional, e.g., best effort or differentiated, service. Simulation results with the first implemented variants of this solution are presented.