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Multimedia applications widely use UDP as the transport protocol because UDP can provide a more timely response to packet loss. Unlike TCP, which has a mature built-in window-based congestion control, UDP applications have to construct their own congestion control at the application level. Various protocols have been proposed for such multimedia applications. Packet loss, round-trip delay, and one-way delay are used in these congestion control protocols to adapt to the network dynamics. Most protocols try to achieve TCP-friendliness by using addictive-increase multiplicative decrease (AIMD) algorithm. In this paper, we present a new bandwidth inference congestion control (BIC) protocol, which adapts its rate by non-intrusive bandwidth inference. It relies on one-way delay trend detection to estimate the end-to-end available bandwidth. We also show an effective BIC protocol implementation based on an MPEG-4 FGS video coding system.
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on (Volume:2 )
Date of Conference: 23-26 May 2004