A simple and efficient ABR control algorithm for large-scale networks

摘要

A simple and efficient available-bit-rate(ABR)con- trol algorithm is described that fairly allocates bandwidth to each virtual channel(VC)in large-scale networks. In ABR control, the peak cell rate(PCR)and minimum cell Rate(MCR)are specified at call set-up, and the cell-emission Rate of each VC is controlled between them based on the Explicit rate(ER)calculated from the traffic conditions at The ATM switches. Conventional control algorithms that do Not use per-VC accounting allocate the same ER to all VCs.