Several congestion control algorithms have been proposed for use in High-speed networks with large delays. In these networks the TCP may have problems utilizing the full bandwidth. A suitable protocol should not take away too much bandwidth from standard TCP flows while utilizing the full bandwidth of high-speed networks. In this paper, besides TCP friendliness and bandwidth scalability properties, RTT (round-trip time) unfairness is considered, that means the situation in which competing flows with different RTTs may consume vastly unfair bandwidth shares. RTT unfairness for high-speed networks occurs distinctly with drop tail routers for flows with large congestion windows where packet loss can be highly synchronized. A new congestion control scheme that alleviates RTT unfairness is proposed. The simulation results confirm the prope1ties of the proposed protocol.
congestion control, high-speed networks, RTI unfairness, protocol design.
All articles published by Studies in Informatics and Control (SIC) are published in accordance with the terms and conditions of the Creative Commons Attribution License (CC BY-NC-SA 4.0).