Parallel service-rate controllers in atm switches

H - Electricity – 04 – L

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H04L 12/56 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2286012

Techniques of service-rate controls in ATM switches are described, and apparatus for their implementation are devised. The techniques fall in two categories: frequency domain controls, and time-domain controls. The regulators control the service rate on a per-class basis or on a per- connection basis. Some class regulators operate at very high speeds of the order of several gigabits per second and cover a medium number of classes, 32 for example. Other regulators operate at high speeds of the order of several- hundred megabits per second, and cover a very large number of classes, e.g., 10,000. A compound regulator which combines both types of regulators is also described. The compound regulators extend the range of controllable classes considerably, covering some 200,000 classes. The main advantages of the regulators of the invention are simplicity, robustness, and high performance.

L'invention concerne des techniques de régulation de la fréquence de services dans des commutateurs ATM ainsi qu'un dispositif concernant leur mise en oeuvre. Les techniques se divisent en deux catégories: les régulations du domaine fréquentiel et les régulations du domaine temporel. Les régulateurs régulent la fréquence des services sur une base régulation par classe ou par connexion. Certains régulateurs de classe fonctionnent à des vitesses très élevées de l'ordre de plusieurs gigabits par seconde et couvrent un nombre moyen de classes, 32 par exemple. D'autres régulateurs fonctionnent à des vitesses très élevées de l'ordre de plusieurs centaines de mégabits par seconde et couvrent un très grand nombre de classes, par exemple 10 000. Un régulateur composé, qui combine ces deux types de régulateurs, augmente considérablement l'éventail des classes que l'on peut réguler, en couvrant 200 000 classes. Les principaux avantages des régulateurs selon l'invention sont sa simplicité, sa fiabilité et son rendement élevé.

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