Resource sharing for book-ahead and instantaneous-request calls

H - Electricity – 04 – L

Patent

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Details

H04L 12/12 (2006.01) H04L 29/02 (2006.01) H04Q 11/04 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2218569

Because it is difficult to provide adequate quality of service to large-bandwidth calls in integrated-services networks, service providers may allow some customers to book ahead their calls. The present invention provides a scheme resource sharing among book-ahead calls (that announce their call initiation and holding times upon arrival) and non-book-ahead calls (that do not announce their holding times and enter service immediately, if admitted). The basis for this sharing is an admission control algorithm in which admission is allowed if an approximate interrupt probability (computed in real time) is below a threshold. Simulation experiments show that the proposed admission control methodology is superior to alternative schemes that do not allow interruption, such as a strict partitioning of resources.

Comme il est difficile d'assurer une qualité de service suffisante pour les appels à large bande dans les réseaux à intégration de services, les fournisseurs de services peuvent permettre à certains consommateurs de réserver des créneaux pour leurs appels. La présente invention offre une méthode de partage de ressources entre appels avec réservation (qui annoncent le début et la durée d'occupation à l'arrivée) et appels sans réservation (qui n'annoncent pas la durée d'occupation et sont établis immédiatement s'ils sont admis). La base de ce partage est un algorithme de commande d'admission autorisant l'admission si la probabilité approximative d'interruption (calculée en temps réel) est inférieure à un certain seuil. Des expériences de simulation montrent que la méthode de commande d'admission projetée est supérieure aux autres méthodes qui ne permettent pas d'interruption, comme dans le cas d'une répartition stricte des ressources.

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