Oscillations and Buffer Overflows in Video Streaming Under Non-Negligible Queuing Delay

In this paper, we analyze how feedback delays a#ect stability, oscillations, and packet loss of several classes of congestion controllers used or proposed for video streaming in the current/future Internet (including window-based AIMD, rate-based AIMD, Scalable TCP, and TFRC). Our results indicate that window-based protocols in this list incur significantly less packet loss under delayed feedback than their rate-based counterparts, which explains their better overall performance observed in practice [12]. At the same time, we show that even TCP's congestion control is far from ideal from the control-theoretic point of view and leads to amplified oscillations when queuing delays increase. We conclude with an observation that multimedia in the future Internet is not likely to enjoy oscillation-free congestion control unless the network deploys some form of AQM

Rule-based expert server system design for multimedia streaming transmission

Ph.DDOCTOR OF PHILOSOPH