Parameter Tuning of Rate-Based Congestion Control Algorithms and Its Application to TCP over ABR
Hiroyuki Ohsaki, Go Hasegawa, Masayuki Murata, Hideo Miyahara · 1995
A rate-based congestion control algorithm has been developed and standardized in the ATM forum for ABR service class. In the standard, the behavior of source and destination end systems is specified by several control parameters such as RIF (Rate Increase Factor) and RDF (Rate Decrease Factor). In spite of the fact that the performance of the rate-based congestion control algorithm heavily depends on the selection of these control parameters, the selection method of parameters is not shown in the standard. In this paper, by extending our previous work, appropriate settings of rate-control parameters in the various circumstances are investigated. We first analyze the dynamical behavior of the rate-based congestion control for multiple groups of ABR connections with different propagation delays. Next, we evaluate the effect of CBR traffic on ABR connections. Simulation results for a multi-hop network configuration is also presented to exhibit the tradeoff relationship among cell loss probability, link utilization and fairness. Finally, the selection method of control parameters in the multi-hop network is proposed based on our analytic methods and simulation results. 1 Parameter Tuning of Rate-Based Congestion Control Algorithm Hiroyuki Ohsaki