Quantitative Study of Differentiated Service Model Using UltraSAN
In today's Internet, only best-effort service is provided. With upcoming Quality of Service (QoS) requirements raised by a wide range of communication-intensive, real-time multimedia applications, the best-effort service is no longer sufficient. As a result, Differentiated Service Model (DiffServ) has been proposed as a cost-effective way to provision QoS in the Internet. This paper first briefly introduces the basic queueing and scheduling schemes in DiffServ. Then the authors focus on quantitative analysis on the performance of these schemes, in terms of the queueing delay and loss rate.