Multirate Scheduling of VBR Video Traffic in ATM Networks

dc.contributor.authorSaha, Debanjanen_US
dc.contributor.authorMukherjee, Sariten_US
dc.contributor.authorTripathi, Satish K.en_US One of the major attractions of Asynchronous Transfer Mode (ATM) networks for transporting bursty video traffic is its ability to exploit the multiplexing gains of packet switching, while providing quality of service guarantees. Unfortunately, most of the multiplexing mechanisms proposed in the literature fail to exploit this feature. We propose a multirate service mechanism that allows a session to be served at different rates at different of times. Applications generating bursty data, such as VBR video, can take advantage of multirate service by requesting for a peak rate of service for brief periods of bursty arrivals and a much lower average rate of service for all other times. Consequently, the applications can improve their delay performance without reserving peak bandwidth for the entire duration of the sessions. Furthermore, the scheduler can multiplex the peaks and the lulls in service rates of different sessions and there by increasing the utilization of the system. Using MPEG video traces from a number of applications, we show that our scheme outperforms Packet-by-packet Generalized Processor Sharing (PGPS) in terms of number of connections admitted, while providing the same level of service guarantees. We also investigate the performance of multirate service when service quality need not be guaranteed. We refer to this as predictive service. We propose a measurement based admission control procedure for predictive service and show that it helps increase the size of the admissible region even further.en_US
dc.description.abstract(Also cross-referenced as UMIACS-TR-96-44)en_US
dc.format.extent895103 bytes
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.relation.isAvailableAtTech Reports in Computer Science and Engineeringen_US
dc.relation.isAvailableAtUMIACS Technical Reportsen_US
dc.relation.ispartofseriesUM Computer Science Department; CS-TR-3657en_US
dc.relation.ispartofseriesUMIACS; UMIACS-TR-96-44en_US
dc.titleMultirate Scheduling of VBR Video Traffic in ATM Networksen_US
dc.typeTechnical Reporten_US


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