Virtual Queue Occupancy and Its Applications on Periodic Bandwidth On Demand Schemes for IP / SONET

Carrying IP tra c over connection-oriented networks requires the use of bandwidth on demand schemes at gateways or network interfaces. A new virtual queue occupancy, which is more accurate than the classical one, is being proposed for IP/SONET bandwidth on demand. Based on the virtual queue occupancy, two enhanced periodic approaches for lossless services, LAVQ and LAVQL, are simulated and evaluated. Simulations show that LAVQ outperforms its counterpart LAQ in terms of bandwidth utilization. By curbing the queue occupancy uctuation, LAVQL further promotes bandwidth utilization and conceals the in uence of the system latency on delay jitter as well. key words: bandwidth on demand, virtual queue occupancy, periodic bandwidth allocation, IP/SONET