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A Survey on TCP-Friendly Congestion Control (extended version)

Author(s): Jörg Widmer, Robert Denda, Martin Mauve.
Title: A Survey on TCP-Friendly Congestion Control (extended version)
Published: Technical Report TR-01-002, Department for Mathematics and Computer Science, University of Mannheim, February 2001
Keyword(s): congestion control, TCP-friendliness, TCP, multicast, fairness
Abstract: New trends in communication, in particular the deployment of multicastand real-time audio/video streaming applications, are likely toincrease the percentage of non-TCP traffic in the Internet. Theseapplications rarely perform congestion control in a TCP-friendlymanner, i.e., they do not share the available bandwidth fairly withapplications built on TCP, such as web browsers, FTP- oremail-clients. The Internet community strongly fears that the currentevolution could lead to a congestion collapse and starvation of TCPtraffic. For this reason, TCP-friendly protocols are being developedthat behave fairly with respect to co-existent TCP flows. In thisarticle, we present a survey of current approaches to TCP-friendlinessand discuss their characteristics. Both unicast and multicastcongestion control protocols are examined, and an evaluation of thedifferent approaches is presented.
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