Queue control under time-variant delays: A discrete time system approach

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

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


This paper introduces a discrete time model for time-variant delays and investigates the very nature of such delays. It is shown that a linear system-delay interface is a system theoretic necessity for the construction of composite linear systems with time-variant delays. Based on this analysis, two interfaces of particular importance are presented and used to obtain new, simple to check stability results for queue control systems. The relevance of the presented modeling and stability results on queue control systems to QoS control in modern communication networks is illustrated via several examples.

Original languageEnglish (US)
Pages (from-to)187-211
Number of pages25
JournalJournal of Circuits, Systems and Computers
Issue number2
StatePublished - Apr 2002


  • Communication networks
  • Discrete-time systems
  • Model
  • Queue control
  • Time-variant delays

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering


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