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Quality of service priority subclasses

  • US 5,828,653 A
  • Filed: 04/26/1996
  • Issued: 10/27/1998
  • Est. Priority Date: 04/26/1996
  • Status: Expired due to Term
First Claim
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1. A method for prioritizing cells of a common quality of service for prioritized entry into a queue of an asynchronous transfer mode network element, said queue being one of plural queues, each for indicating where, in a common buffer, cells of a respective quality of service are stored, the method comprising, with respect to each cell, the steps of:

  • receiving, by a processing element associated with said network element, a cell having a header portion;

    identifying, by said processing element, a quality of service indicator for said cell from said cell header portion;

    identifying, by said processing element, a network element queue associated with said identified quality of service;

    monitoring the capacity of said identified queue by said processing element;

    detecting, by said processing element, one or more queue capacity thresholds associated with said identified queue and achieved by said monitored capacity, said one or more queue capacity thresholds stored in a memory unit associated with said processing element;

    identifying, by said processing element, a priority assignment of said cell from said cell header portion; and

    determining by said processing element, whether to discard or enqueue said cell in said identified queue associated with said identified quality of service based upon a comparison of said one or more achieved queue capacity thresholds and said identified priority assignment.

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