Performance Evaluation of Rate-based Congestion Control Algorithms in Multimedia Atm Networks

Rate-based congestion control promises effective traffic management for the ABR service class suitable to data communications in ATM networks. There have been proposed several rate-based congestion control schemes in the ATM Forum, including Enhanced Proportional Rate Control Algorithm (EPRCA) and EPRCA++ methods. While many studies have been devoted for these schemes in the past, only ABR traffic is taken into account; the effect of VBR and CBR service classes, in which multimedia traffic are accommodated, are not considered. In this paper, we evaluate performance of ratebased congestion control schemes when not only ABR traffic but also VBR traffic is incorporated into the ATM network. Through simulation experiments, we show drawbacks of current proposals of rate-based congestion control schemes for multimedia traffic, and give several suggestions to overcome those problems.