On Designing Improved Controllers for AQM Routers Supporting TCP Flows

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On Designing Improved Controllers for AQM Routers Supporting TCP Flows (2000)

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by C. V. Hollot , Vishal Misra , Don Towsley , Wei-Bo Gong

Venue:	IN PROCEEDINGS OF IEEE INFOCOM
Citations:	263 - 16 self

BibTeX

@INPROCEEDINGS{Hollot00ondesigning,
    author = {C. V. Hollot and Vishal Misra and Don Towsley and Wei-Bo Gong},
    title = {On Designing Improved Controllers for AQM Routers Supporting TCP Flows},
    booktitle = {IN PROCEEDINGS OF IEEE INFOCOM},
    year = {2000},
    pages = {1726--1734},
    publisher = {}
}

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Abstract

In this paper we study a previously developed linearized model of TCP and AQM. We use classical control system techniques to develop controllers well suited for the application. The controllers are shown to have better theoretical properties than the well known RED controller. We present guidelines for designing stable controllers subject to network parameters like load level, propogation delay etc. We also present simple implementation techniques which require a minimal change to RED implementations. The performance of the controllers are verified and compared with RED using ns simulations. The second of our designs, the Proportional Integral (PI) controller is shown to outperform RED significantly.

Keyphrases

designing improved controller aqm router supporting tcp flow n simulation load level stable controller red implementation proportional integral classical control system technique red controller linearized model theoretical property present simple implementation technique network parameter present guideline minimal change propogation delay etc

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