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Proceedings Paper

Designing a delay-based adaptive congestion control mechanism using control theory and system identification for TCP/IP networks
Author(s): Mitsushige Morita; Hiroyuki Ohsaki; Masayuki Murata
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Paper Abstract

In the Internet, TCP (Transmission Control Protocol) has been used as an end-to-end congestion control mechanism. Of all several TCP implementations, TCP Reno is the most popular implementation. TCP Reno uses a loss-based approach since it estimates the severity of congestion by detecting packet losses in the network. On the contrary, another implementation called TCP Vegas uses a delay-based approach. The main advantage of a delay-based approach is, if it is properly designed, packet losses can be prevented by anticipating impending congestion from increasing packet delays. However, TCP Vegas was designed using not a theoretical approach but an ad hock one. In this paper, we therefore design a delay-based congestion control mechanism by utilizing the classical control theory. Our rate-based congestion control mechanism dynamically adjusts the packet transmission rate to stabilize the round-trip time for utilizing the network resources and also for preventing packet losses in the network. Presenting several simulation results in two network configurations, we quantitatively show the robustness and the effectiveness of our delay-based congestion control mechanism.

Paper Details

Date Published: 1 July 2002
PDF: 12 pages
Proc. SPIE 4865, Internet Performance and Control of Network Systems III, (1 July 2002); doi: 10.1117/12.473384
Show Author Affiliations
Mitsushige Morita, Sun Microsystems K.K. (Japan)
Hiroyuki Ohsaki, Osaka Univ. (Japan)
Masayuki Murata, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 4865:
Internet Performance and Control of Network Systems III
Robert D. van der Mei; Frank Huebner, Editor(s)

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