Preserving Smooth Traffic and High Presentation QoS for VBR-Encoded Video
This paper proposes a feedback based rate control mechanism to achieve both smooth traffic and the high presentation quality of encoded video. We observed that the aggregated required bandwidth of uctuating consumption rate may be zero in time scale longer than negotiated at session establishment. We use such a notion in controlling rate. In our mechanism, optimism is found in that we do not make immediate response to high consumption rate. Traffic would not need to be changed by feedback if total aggregated bandwidth until next service round is smaller than the amount of resources negotiated at channel establishment. We show that rate control based on such an optimism guarantees acceptable QoS compared to previous mechanisms.
KeywordsPacket Loss Sink Node Safe Area Feedback Message Rate Control Mechanism
Unable to display preview. Download preview PDF.
- 1.V. P. Kumar, T. V. Larkshman, D. Stiliadis: Beyond Best Effort: Router Architecture for the Differentiated Services of Tomorrow’s Internet. http://www.lucent.com/dns/products/ps6400.html
- 2.James D. Salehi, Zhi-Li Zhang, James F. Kurose, Don Towsley: Supporting Stored Video: Reducing Rate Variability and End-to-End Resource Requirements through Optimal Smoothing. ACM SIGMETRICS (1996).Google Scholar
- 3.H. Zhang, Edward W. Knightly: RED-VBR: A new approach to support VBR-video on packet switching network. In Proc. of NOSSDAV (1997).Google Scholar
- 4.Edward W. Knightly, Jingyu Qiu: Measurement-Based Admission control with Aggregate Traffic Envelopes. Proc. of 10th Int. Tyrrhenian Workshop on Digital Communications. (1998).Google Scholar
- 5.Edward W. Knightly: Resource Allocation for Multimedia Traffic Flows using Rate-Variance Envelopes. ACM Multimedia Systems Journal (1999) (to appear)Google Scholar