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by Alan B. Zhang, Victor C. M. Leung
http://www.ece.ubc.ca/~vleung/accepted/IJPDN_bz.pdf
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Abstract:
Please address all correspondences to Dr. Victor Leung at the above address. Key words: rate-based congestion control, ATM over satellite, performance evaluation ABSTRACT This paper evaluates the performance of different rate-based congestion control schemes for ABR services over broadband satellite networks (BSNs) interworking with ATM/BISDNs. The explicit forward congestion indication (EFCI) and explicit rate (ER) schemes are considered on their own in single loop end-to-end control. It is shown that the long feedback delay over satellite leads to sluggish control and large buffer requirements. To improve performance, delay-based modifications to the EFCI and ER schemes, known as DBCI and DBER schemes, are proposed to dynamically adjust the rate adaptation parameters according to the feedback delay. Simulation results show that the proposed DBCI and DBER schemes effectively reduces buffer congestion and starvation, without significantly reducing link utilization and fairness in the system. 1.
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