Congestion Control Based on Priority Drop for H.264/SVC

Authors:
Yang Xiaogang;Liu Jiqiang;Li Ning
Affiliations:
Beihang University, Beijing, China;Beijing jiaotong University, Beijing, China;Beihang University, Beijing, China
Venue:
MUE '07 Proceedings of the 2007 International Conference on Multimedia and Ubiquitous Engineering
Year:
2007

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Abstract

For H.264/SVC, different layers or frames have different order of precedence according to their importance on video quality and the decoding process. Network should provide more protection for high priority layers or frames when SVC flow is transmitted over IP network. This paper proposes an active queue management algorithm based on priority dropping and PID algorithm, called PID_PD, which first drops the least important packets when network congestion arises. PID_PD implements differentiated service in IP layer to provide high quality video for end user. In addition, PID_PD do not create a side effect for the performance of control system. Simulation shows this method can protect important video data well, lower the disturbance of background flow, and decrease the packet loss rate of SVC flow.