A novel fuzzy-PID dynamic buffer tuning model to eliminate overflow and shorten the end-to-end roundtrip time for TCP channels

Authors:
Wilfred W. K. Lin;Allan K. Y. Wong;Tharam S. Dillon
Affiliations:
Department of Computing, Hong Kong Polytechnic University, Hong Kong, SAR;Department of Computing, Hong Kong Polytechnic University, Hong Kong, SAR;Faculty of Information Technology, University of Technology, Sydney, N.S.W.
Venue:
ISPA'04 Proceedings of the Second international conference on Parallel and Distributed Processing and Applications
Year:
2004

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Abstract

The novel Fuzzy-PID dynamic buffer controller/tuner eliminates overflow at the user/server/application level adaptively. As a result it shortens the end-to-end roundtrip time (RTT) of a client/server TCP interaction due to improved fault tolerance. The Fuzzy-PID, which is independent of what occurs at the system/router level, is formed by combining fuzzy logic with the extant algorithmic model, the pure PID (P2ID) tuner. It eliminates the shortcomings from the P2ID component but preserves its power. Its operation is independent of the traffic pattern, and this makes it suitable for the Internet, where the traffic pattern switches suddenly, for example, from LRD (long-range dependence) to SRD (short-range dependence) or multi-fractal.