A utility-based congestion control scheme for Internet-style networks with delay

Tansu Alpcan, Tamer Başar

Research output: Contribution to journalConference articlepeer-review


In this paper, we develop, analyze and implement a congestion control scheme obtained in a noncooperative game framework where each user's cost function is composed of a pricing function, proportional to the queueing delay experienced by the user, and a fairly general utility function which captures the user demand for bandwidth. Using a network model based on fluid approximations and through a realistic modeling of queues, we establish the existence of a unique equilibrium as well as its global asymptotic stability for a general network topology. We also provide sufficient conditions for system stability when there is a bottleneck link shared by multiple users experiencing non-negligible communication delays. Based on these theoretical foundations, we implement a window-based, end-to-end congestion control scheme, and simulate it in ns-2 network simulator on various network topologies with sizable propagation delays.

Original languageEnglish (US)
Pages (from-to)2039-2048
Number of pages10
JournalProceedings - IEEE INFOCOM
StatePublished - 2003
Event22nd Annual Joint Conference on the IEEE Computer and Communications Societies - San Francisco, CA, United States
Duration: Mar 30 2003Apr 3 2003


  • Control theory
  • Economics
  • Mathematical programming/optimization
  • Simulations

ASJC Scopus subject areas

  • General Computer Science
  • Electrical and Electronic Engineering


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