Comparison of PI controllers designed for the delay model of TCP/AQM networks

被引：29
作者：
Unal, Hakki Ulas [1 ]
Melchor-Aguilar, Daniel [2 ]
Ustebay, Deniz [3 ]
Niculescu, Silviu-Iulian [4 ]
Ozbay, Hitay [5 ]
机构：
[1] Anadolu Univ, Dept Elect & Elect Engn, TR-26555 Eskisehir, Turkey
[2] IPICyT, Div Appl Math, San Luis Potosi, SLP, Mexico
[3] McGill Univ, Dept Elect & Comp Engn, Montreal, PQ, Canada
[4] CNRS SUPELEC, Lab Signaux & Syst, F-91190 Gif Sur Yvette, France
[5] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey
来源：
COMPUTER COMMUNICATIONS | 2013年 / 36卷 / 10-11期
关键词：
Active Queue Management; Delay systems; PI Controller; Network congestion; TCP/IP; SUPPORTING TCP FLOWS; STABILITY ANALYSIS; TCP/RED SYSTEMS; AQM; ROBUST; FRAGILE; RULES; RED;
D O I：
10.1016/j.comcom.2013.03.001
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
One of the major problems of communication networks is congestion. In order to address this problem in TCP/IP networks, Active Queue Management (AQM) scheme is recommended. AQM aims to minimize the congestion by regulating the average queue size at the routers. To improve upon AQM, recently, several feedback control approaches were proposed. Among these approaches, PI controllers are gaining attention because of their simplicity and ease of implementation. In this paper, by utilizing the fluid-flow model of TCP networks, we study the PI controllers designed for TCP/AQM. We compare these controllers by first analyzing their robustness and fragility. Then, we implement these controllers in ns-2 platform and conduct simulation experiments to compare their performances in terms of queue length. Taken together, our results provide a guideline for choosing a PI controller for AQM given specific performance requirements. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：1225 / 1234
页数：10
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