Analysis and design of the virtual rate control algorithm for stabilizing queues in TCP networks

  • Authors:
  • Eun-Chan Park;Hyuk Lim;Kyung-Joon Park;Chong-Ho Choi

  • Affiliations:
  • School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-742, South Korea;School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-742, South Korea;School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-742, South Korea;School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-742, South Korea

  • Venue:
  • Computer Networks: The International Journal of Computer and Telecommunications Networking
  • Year:
  • 2004

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Abstract

The virtual rate control (VRC) algorithm has been proposed for active queue management (AQM) in TCP networks. VRC, a rate-based control mechanism, responds quickly to traffic changes, thus allowing for high utilization and small loss. It can effectively stabilize both the input rate and the queue length around their target levels. In this paper, we analyze the stability of the VRC algorithm based on a linearized TCP model with time delay and provide a design guideline for parameter setting to make the overall system stable. Finally, we confirm the validity of our analysis and the effectiveness of VRC compared to RED, PI, REM, and AVQ through extensive ns-2 simulations.