The effect of uncertain time-variant delays in ATM networks with explicit rate feedback

A control theoretic approach

Mihail L. Sichitiu, Peter H. Bauer, Kamal Premaratne

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A new, more realistic model for the available bit rate traffic class in ATM network congestion control with explicit rate feedback is introduced and analyzed. This model is based on recent results by Ekanayake regarding discrete time models for time-variant delays. The discrete time model takes into account the effect of time-variant buffer occupancy levels of ATM switches, thus treating the case of time-variant delays between a single congested node and the connected sources. For highly dynamic situations, such a model is crucial for a valid analysis of the resulting feedback system. The new model also handles the effects of the mismatch between the resource management cell rates and the variable bit rate controller sampling rate as well as buffer and rate nonlinearities. A brief stability study shows that an equilibrium in the buffer occupancy is impossible to achieve in the presence of time-variant forward path delays. Stability conditions for the case of time-variant delays in the return path are presented. Finally, illustrative examples are provided.

Original languageEnglish
Pages (from-to)628-637
Number of pages10
JournalIEEE/ACM Transactions on Networking
Volume11
Issue number4
DOIs
StatePublished - Aug 1 2003

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Asynchronous transfer mode
Feedback
Automatic teller machines
Switches
Sampling
Controllers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture
  • Information Systems

Cite this

The effect of uncertain time-variant delays in ATM networks with explicit rate feedback : A control theoretic approach. / Sichitiu, Mihail L.; Bauer, Peter H.; Premaratne, Kamal.

In: IEEE/ACM Transactions on Networking, Vol. 11, No. 4, 01.08.2003, p. 628-637.

Research output: Contribution to journalArticle

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