A queueing study of peak-rate enforcement for jitter reduction in ATM networks

The success of future broadband packet-switched networks, based on technologies such as the asynchronous transfer mode (ATM), will be heavily dependent upon their ability to provide quality of service (QOS) guarantees to a wide range of traffic classes. A dual-class queueing system is formulated and applied to study the effects of cell spacing within the network premises as a means of controlling network-induced delay jitter. The adopted service policy regulates the traffic class of interest by enforcing a predetermined peak output rate. The probability distributions for delay and jitter of the regulated traffic class are derived by analyzing the system in discrete time. While maintaining a high degree of simplicity, the proposed policy is shown to provide improved jitter performance for the regulated traffic class over the first-in first-out (FIFO) service policy.