Analysis of efficient and fair explicit congestion control protocol with feedback delay: Stability and convergence

Authors:
Hangxing Wu;Fengyuan Ren;Wenping Pan;Yadong Zhai
Affiliations:
School of Information Engineering, University of Science and Technology Beijing, Beijing 100082, China;Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China;College of Automation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;No. 203 Research Institute of China Ordnance Industries, Xi'an, 710065, China
Venue:
Computer Communications
Year:
2010

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An efficient and fair explicit congestion control protocol for high bandwidth-delay product networks

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Abstract

To overcome the drawbacks of XCP and VCP, we propose an efficient and fair explicit congestion control protocol, EFXCP, for high bandwidth-delay product networks and analyze the stability and convergence attributes of EFXCP. Our simulations showed that EFXCP achieves excellent performance. However, the stability analysis in our previous paper neglected the feedback delay for simplification analysis, which is not consistent with that of present-day networks and make the analysis inaccuracy. To make the analysis more realistic and accurate, to portray the real network, we consider the stability analysis with the feedback delay and present a fluid flow of traffic model of EFXCP. Based on the model, we utilize classical control theory method to further analyze the stability of EFXCP. We also quantitatively define the efficiency and fairness index, and based on these definitions, we qualitatively analyze the efficiency and fairness convergence timings of EFXCP. These conclusions are validated by extensive NS2 simulations.