Effects of control loop delay on the stability of a rate control algorithm

被引：5

作者：

Aweya, J ^{[1
]}

Montuno, DY ^{[1
]}

Ouellette, M ^{[1
]}

机构：

[1] Nortel Networks, Ottawa, ON K1Y 4H7, Canada

来源：

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS | 2004年 / 17卷 / 09期

关键词：

ABR flow control; congestion control; ATM networks; feedback control system; stability analysis; time-delayed systems;

D O I：

10.1002/dac.678

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：

This paper presents exact stability analysis of a rate control algorithm described in Perform. Eval. 2001; 43(23):63-94; Int. J. Commun. Systems 2001; 14(6):593-618. The stability regions of the rate control process in the presence of control loop delay are analysed. The rate control process is represented by delay-difference equation and the criteria for asymptotic stability are derived in terms of the control parameters and control loop delay. The analysis shows that the approximate upper bound of the control gain derived in Aweya et al. is very close to the exact bound developed here. Using theoretical calculations performed in the discrete-time domain, we show that as the feedback time delay d increases, the intensity of control (i.e. the control gain alpha) must decrease in order for the system to remain stable. Copyright (C) 2004 John Wiley Sons, Ltd.

引用

页码：833 / 850

页数：18

共 35 条

[1] Congestion control as a stochastic control problem with action delays [J].