ATM traffic engineering for ABR service provisioning

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1996 (EN)
ATM traffic engineering for ABR service provisioning (EN)

Protonotarios, E (EN)
Mitrou, N (EN)
Kontovasilis, K (EN)

N/A (EN)

The Available Bit Rate (ABR) service is being designed as a low-cost transport service over ATM, which will be using the bandwidth left available after servicing connections of another, high-priority class. The implementation of the ABR service requires large buffers at each multiplexing/switching stage to keep cell-loss rates down to a minimum, and a feedback mechanism from the network to the terminals in order for the latter to adjust their traffic profiles according to the prevailing congestion conditions. Thus, an enhanced set of traffic control functions is necessary to support this new service. In this paper the main traffic analysis and control problems related with the ABR service are addressed, modelled and answered on the basis of effective rates defined for the multiplexed connections. Emphasis is given to a simple CAC scheme which consists in allocating peak rates to the high-priority class and effective rates to the ABR class. An adaptive shaping mechanism is then required to enforce the contracted effective rates for the ABR streams. Producing ON/OFF streams facilitates the control functions by allowing the use of approximate closed-form calculations. © J.C. Baltzer AG, Science Publishers. (EN)


Control Problem (EN)
Cell Loss Rate (EN)
Traffic Control (EN)
High Priority (EN)
Service Provision (EN)
Available Bit Rate (EN)
Feedback Mechanism (EN)
Traffic Engineered (EN)
Transport Service (EN)
Traffic Analysis (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Telecommunication Systems (EN)




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