Extending the concept of effective bandwidths to DiffServ networks

It is a challenging issue to provide guaranteed QoS for diverse network applications while still obtaining high network utilization in DiffServ networks. As a promising approach to achieve the tradeoff between network utilization and the provision of QoS, the concept of effective bandwidths has been widely accepted. We propose a traffic measurement-based adaptive effective bandwidth allocation algorithm aiming at overcoming the conservative nature of effective bandwidths. We study the performance of adaptive effective bandwidth allocation under dynamic weighted round robin scheduling instead of a FIFO queueing discipline, aiming at providing Differentiated Services to traffic flows. We quantify the statistical multiplexing gain among multiple traffic classes with a set of simulations.