Sync-TCP: A New Approach to High Speed Congestion Control

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Executive Summary

As bandwidth in the Internet continues to grow, there will be more and more long fat network pipes with abundant residual bandwidth. At the same time, there is also a gradual and steady increase in the deployment of Internet endpoints equipped with different variants of high speed TCP. In this paper, the authors first illustrate drawbacks associated with two widely deployed high speed TCP variants, namely: Cubic TCP and Compound TCP. They show that even with common and reasonable settings, problems can arise. Next, they present Synchronized TCP (Sync-TCP), a new delay-based High Speed Congestion Control (HSCC) algorithm.

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