An admission control for video broadcast systems

Abstract

We investigate the problem of guaranteed end-to-end response times for video/audio broadcast systems. A flow is sent by a video/audio source and recorded by video servers for local clients. Because of transmission delay variability, the video/audio flows suffer release jitter. This end-to-end guarantee is based on an admission control run only by the nodes belonging to the path of the requesting flow. The requesting flow is accepted only if it does not endanger the guarantees already granted. All nodes use a non-preemptive non-idling scheduling: video/audio servers use earliest deadline first (EDF) and other nodes use fixed priority/highest priority first (FP/HPF).