A scheduled controller design of congestion control considering network resource constraints

被引：2

作者：

Naito, H ^{[1
]}

Azuma, T ^{[1
]}

Fujita, M ^{[1
]}

机构：

[1] Kanazawa Univ, Kanazawa, Ishikawa 920, Japan

来源：

ELECTRICAL ENGINEERING IN JAPAN | 2004年 / 149卷 / 01期

关键词：

congestion control; transmission control protocol; active queue management; time delay; linear parameter varying system; gain scheduling;

D O I：

10.1002/eej.10341

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we consider a dynamical model of computer networks and derive a synthesis method for congestion control. First, we present a model of TCP/AQM (Transmission Control Protocol/Active Queue Management') as a dynamical model of computer networks. The dynamical model of TCP/AQM networks consists of models of TCP window size, queue length, and AQM mechanisms. Second, we propose to describe the dynamical model of TCP/AQM networks as linear systems with self-scheduling parameters, which also depend on information delay. Here we focus on the constraints on the maximum queue length and TCP window size, which are the network resources in TCP/AQM networks. We derive TCP/AQM networks as the LPV system (linear parameter varying system) with information delay and self-scheduling parameter. We design a memoryless state feedback controller of the LPV system based on a gain-scheduling method. Finally, the effectiveness of the proposed method is evaluated by using MATLAB and the well-known ns-2 simulator (Network Simulator Version 2). (C) 2004 Wiley Periodicals, Inc.

引用

页码：61 / 68

页数：8

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