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Cost of AQM in stabilizing TCP

Kim, Ki Baek and Low, Steven H. (2002) Cost of AQM in stabilizing TCP. California Institute of Technology . (Unpublished)

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In this paper, we propose a unified mathematical framework based on receding horizon control for analyzing and designing AQM (Active Queue Management) algorithms in stabilizing TCP (Transfer Control Protocol). The proposed framework is based on a dynamical system of the given TCP and a linear quadratic cost on transients in queue length and flow rates. We derive the optimal receding horizon AQMs (RHAs) that stabilizes the linearized dynamical system with the minimum cost. Conversely, we show that any AQM with an appropriate structure solves the same optimal control problem with appropriate weighting matrix. We interpret existing AQM's such as RED, REM, PI and AVQ as different approximations of the optimal AQM, and discuss the impact of these approximations on performance.

Item Type:Report or Paper (Technical Report)
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URLURL TypeDescription] The first author acknowledges the support of the Post-doctoral Fellowship Program of Korean Science & Engineering Foundation (KOSEFPublisherUNSPECIFIED
Group:Computer Science Technical Reports
Subject Keywords:Congestion Control, Internet, Optimal Control, Receding Horizon Control
Record Number:CaltechCSTR:2002.008
Persistent URL:
Usage Policy:You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.
ID Code:26933
Deposited By: Imported from CaltechCSTR
Deposited On:17 Jul 2002
Last Modified:26 Dec 2012 14:09

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