Equilibrium analysis through separation of user and network behavior

  • Authors:
  • Y. C. Tay;Dinh Nguyen Tran;Eric Yi Liu;Wei Tsang Ooi;Robert Morris

  • Affiliations:
  • National University of Singapore, Mathematics Department, 2 Science Drive 2, Kent Ridge 117543, Singapore;New York University, Department of Computer Science, Courant Institute of Mathematics, 715 Broadway Room, New York, NY 10003, USA;University of North Carolina, Department of Computer Science, Sitterson Hall, Chapel Hill, N.C. 27599-3175, USA;National University of Singapore, Department of Computer Science, Law Link, Singapore 117590, Singapore;Massachusetts Institute of Technology, Computer Science and Artificial Intelligence Laboratory, 32 Vassar Street, Cambridge, MA 02139, USA

  • Venue:
  • Computer Networks: The International Journal of Computer and Telecommunications Networking
  • Year:
  • 2008

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Abstract

Internet complexity makes reasoning about traffic equilibrium difficult, partly because users react to congestion. This difficulty calls for an analytic technique that is simple, yet have enough details to capture user behavior and flexibly address a broad range of issues. This paper presents such a technique. It treats traffic equilibrium as a balance between an inflow controlled by users, and an outflow controlled by the network (link capacity, congestion avoidance, etc.). This decomposition is demonstrated with a surfing session model, and validated with a traffic trace and NS2 simulations. The technique's accessibility and breadth are illustrated through an analysis of several issues concerning the location, stability, robustness and dynamics of traffic equilibrium.