A new queuing and scheduling model under DiffServ architecture

This paper proposes a new queuing model and scheduling scheme which realizes multiple classes QoS mechanism under DiffServ architecture. The queuing model is composed of two parallel output subqueues, each output subqueue sets different buffer threshold for different class traffic, and the new proposed method may achieve good balance between the delay and the loss of different class traffic. So it can provide QoS for multiple classes.