Broadcast Video Streaming in Cellular Networks: An Adaptation Framework for Channel, Video and AL-FEC Rates Allocation

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Executive Summary

Video streaming is one of the most important applications that will make use of the high data rates offered by 4G networks. The current video transport techniques are already very advanced, and the more immediate problems lie in the joint optimization of video coding, AL-FEC, and PHY rate selection with the goal of enhancing the user perceived quality. In this paper, the authors provide an analysis of video broadcast streaming services for different combinations of layered coding and AL-FEC, using a realistic LTE PHY layer. Their simulation results show that the scalable content adaptation given by Scalable Video Coding (SVC) and the scheduling flexibility offered by the 3G-LTE MAClayer provide a good match for enhanced video broadcast services for next generation cellular networks.

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