This paper proposes an ATM traffic management method that combines a deterministic source traffic descriptor, a deterministic usage parameter control (UPC) algorithm, and a conservative statistical bandwidth allocation method. The source traffic descriptor is based on sliding time interval-type descriptors for both the peak-rate and the average-rate. A UPC method which combines a slidingwindow-type circuit and a two-phase credit-window-type circuit for widely-ranging traffic parameter values is proposed. The method is precise and accurate, and requires only a small amount of hardware. The bandwidth allocation method uses the worst pattern that can be transmitted through the proposed UPC circuit. The proposed traffic management method not only guarantees the QOS of all connections, but also allows for large statistical multiplexing gain. The proposed method, therefore, makes it possible to create a more effective BISDN, one that can offer cost-effective broadband VBR services.
NTT T r a n s m i s s i o n s y s t e m s L a b o r a t o r i e sYokosuka-shi, Kanagawa-ken 238-03 J a p a n
AbstractThis paper explores some techniques which will play important roles in the development of the future universal transport network. In the network, the information can be efficiently integrated and transported by making the most of the burstiness of the information flows and by exploiting the store-and-forward process a t the transport nodes. First, a new coding and multiplexing scheme for audio signals matched to the above transportation mode is proposed. The effectiveness of the scheme i s demonstrated through computer simulation. Next, the analytical procedures and results of a nodal queueing delay evaluation are presented.The analytical results a r e compared with those from simulation and the extent of the deviations are provided for some sets of parameters. The analysis provides the useful tools to perform sensitivity analysis of network delay performance.
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