H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) H04L 29/02 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2211077
To simplify the service decision made in a queue based digital switch, a method and apparatus is introduced that makes service decisions based upon the history of incoming cells. The apparatus includes a minimum service rate circuit that monitors the rate of arriving cells. The minimum service rate circuit tests the arriving cells to determine if they are in conformance with the minimum service rate of a service contract. The minimum service rate circuit may use a continuous state leaky bucket algorithm or virtual scheduling algorithm as specified in the CCITT Recommendation I.371 document to determine if a cell is in conformance with the minimum service rate of the service contract. When a cell arrives that conforms to the minimum service rate, the minimum service rate circuit notifies the server and the server serves the queue associated with the connection.
L'invention concerne un procédé et un appareil qui permettent de simplifier les décisions de service prises dans un commutateur numérique à files d'attente en utilisant les informations relatives à des cellules entrantes. L'appareil comprend un circuit à débit de service minimum qui surveille le rythme de ces cellules arrivant. Ce circuit contrôle les cellules arrivant afin de déterminer si elles sont conformes au débit de service minimum prévu dans un contrat de service. Ledit circuit peut fonctionner sur la base d'un algorithme du compteur à fuite ou d'un algorithme de programmation virtuelle à état continu, conformément à la Recommandation UIT-T I.1371 (ex Recommandation I.371 du CCITT). Cela permet d'établir si une cellule est conforme au débit de service minimum du contrat. A l'arrivée d'une cellule conforme au débit en question, le circuit à débit de service minimum informe le serveur de cette conformité, et le serveur dessert alors la file d'attente associée à la connexion.
Corbalis Charles M.
Klausmeier Daniel E.
Cisco Systems Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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