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A Proposal of TCP Congestion Control Scheme Suited for Bandwidth Reservation Network

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5 Author(s)
Komuro, N. ; School of Computer Science, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo, 192-0982 JAPAN. Tel.: +81-426-37-2111, E-mail: nkmr@cs.teu.ac.jp ; Osaki, K. ; Shinmura, Y. ; Ueda, H.
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The congestion control provided by Transmission Control Protocol (TCP) plays a key role in ensuring network stability and increased Quality of Service (QoS). However, in the face of the increasing number of high-speed networks such as Multi-protocol Label Switching with band-width width reservation, conventional congestion control algorithms limit the network resource utilization efficiency since they overreact to packet loss. This paper proposes a new TCP congestion control scheme that improves the goodput by using reserved bandwidth to set the slow start threshold and the congestion window after a timeout or three duplicate acknowledgments. The advantage of this algorithm is that the TCP sender recovers faster after packet loss, especially when the connections have large round trip times; it avoids Reno's overreaction to loss.

Published in:

Communications, 2006. ICC '06. IEEE International Conference on  (Volume:2 )

Date of Conference:

June 2006