Departmental Papers (ESE)

Document Type

Journal Article

Date of this Version

April 2004

Comments

Copyright 2004 IEEE. Reprinted from IEEE/ACM Transactions on Networking, Volume 12, Issue 2, April 2004, pages 286-299.
Publisher URL: http://ieeexplore.ieee.org/xpl/tocresult.jsp?isNumber=28714&puNumber=90

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Abstract

Virtual queue-based marking schemes have been recently proposed for Active Queue Management (AQM) in Internet routers. We consider a particular scheme, which we call the Adaptive Virtual Queue (AVQ), and study its following properties: its stability in the presence of feedback delays, its ability to maintain small queue lengths, and its robustness in the presence of extremely short flows (the so-called web mice). Using a linearized model of the system dynamics, we present a simple rule to design the parameters of the AVQ algorithm. We then compare its performance through simulation with several well-known AQM schemes such as RED, REM, Proportional Integral (PI) controller, and a nonadaptive virtual queue algorithm. With a view toward implementation, we show that AVQ can be implemented as a simple token bucket using only a few lines of code.

Keywords

Active queue management (AQM), ECN marking, Internet congestion control

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Date Posted: 19 November 2004

This document has been peer reviewed.