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Congestion control for high speed packet networks

  • US 5,291,481 A
  • Filed: 10/04/1991
  • Issued: 03/01/1994
  • Est. Priority Date: 10/04/1991
  • Status: Expired due to Term
First Claim
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1. A packet switching system, comprising:

  • an input for receiving calls, some of which are bursty transmissions and some of which are non-bursty transmissions;

    a plurality of outputs;

    a call controller means for;

    (a) routing a call received by the input to a selected one of the outputs,(b) identifying whether the received call is a bursty transmission or a non-bursty transmission,(c) reserving for the received call at least a first requested minimal amount of bandwidth on the selected one of the outputs needed to perform in-call buffer reservation in response to an identification that the call is a bursty transmission, and(d) reserving a predetermined second peak amount of bandwidth on the selected one of the outputs needed to transmit the call in response to an identification that the call is a non-bursty transmission; and

    a trunk controller means associated with the selected one of the outputs for;

    (a) reserving a requested amount of buffer space for the call in the trunk controller means in response to a buffer reservation packet in a call which is a bursty transmission, the buffer reservation being accomplished independent of the call routing, call identifying, and bandwidth reservation of the call controller means, and(b) placing data in a call which is a non-bursty transmission on the selected one of the outputs in accordance a first priority and placing data in a call which is a bursty transmission on the selected one of the outputs in accordance with a second priority less than the first priority.

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