Importance

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Abstract

Buffer and bandwidth resources in an ATM switch having a multi-class queue capable of servicing one or more ATM service classes are dynamically allocated at each call setup and release request. Buffer and bandwidth are dynamically partitioned in a manner that satisfies varied criteria including: tight allocation of buffer and bandwidth resources for each class, in desired proportions relative to the total respective available resources to meet the same QoS criteria within an ATM class, to implement the resource allocation described herein in a computationally simple and fast manner, to support multiple and varied QoS criterias, such as delay and loss, and thus be independent of the QoS criteria, to operate independently of the choice of the CAC/QoS computation engine, such that, given a set of connections and a desired QoS criteria the proposed resource allocation mechanisms are able to accommodate any desired method of computing the required bandwidth and buffer, and to provide a means for tuning the frequency of changes in the buffer or bandwidth allocation depending on which resource may be expensive to re-allocate.

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First Claim