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Method and system for state-dependent admission control and routing of multi-rate circuit-switched traffic

  • US 6,366,559 B1
  • Filed: 06/05/1998
  • Issued: 04/02/2002
  • Est. Priority Date: 06/06/1997
  • Status: Expired due to Term
First Claim
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1. A method for admission control of multi-rate circuit-switched traffic on a candidate link in a communications network comprising a network controller and a plurality of nodes interconnected by one or more links, said method comprising the steps of:

  • determining at one of the nodes, with respect to a fixed occupancy in the link incident at the one of the nodes, using Markov decision processing, a set of expected admission costs corresponding to a set of occupancies in the link, respectively;

    communicating the set of expected admission costs to the network controller;

    in response to receiving a call at the one of the nodes, determining in the network controller a difference between the expected admission cost corresponding to the occupancy in the link resulting from admission of the multi-rate traffic onto the link and the expected admission cost corresponding to a current occupancy of the link;

    admitting the multi-rate circuit-switched traffic onto the link when the difference is less than a cost threshold; and

    rejecting the multi-rate circuit-switched traffic when the difference is equal to or greater than the cost threshold, such that a total traffic loss rate in the link is minimized.

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