Patent ID: 6212163
Filing Date: 2001-04-03
Classification: H04L,H04Q

Abstract:
A multi-class ATM connection admission method comprising the steps of:receiving a connection request for a call belonging to one of a plurality of service categories with assigned priority levels;classifying the received connection request based on a service category requested by the connection request;evaluating a quality of service of said service category requested by the connection request and evaluating a quality of service of each other service category, when assuming that the received connection request has been admitted, the evaluating step further comprising the substeps of:estimating a cell loss ratio for traffic wherein calls of the service category for which the connection request has been received and calls of service categories of lower priority levels are multiplexed, andestimating a cell loss ratio of said service categories of lower priority levels when assuming that all of the lost cells based on the cell loss ratio of said traffic belong to said service categories of lower priority levels;determining whether or not to admit the received connection request based on results of said evaluations; andpermitting cells of said call to be stored in a buffer when the connection request for said call has been determined to be admissible.