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Method and apparatus for minimizing contention losses in networks

  • US 6,243,378 B1
  • Filed: 10/27/1999
  • Issued: 06/05/2001
  • Est. Priority Date: 06/26/1997
  • Status: Expired due to Fees
First Claim
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1. A multi-stage switching network, the network comprising a plurality of self-routing switches cascaded into first, middle and last stages, each said switch including a plurality of switch inputs and a plurality of switch outputs, each of the switch outputs of each said switch coupled to a different switch input of others of said switches;

  • wherein each of said output ports of said last stages includes a threshold means for determining whether a selective camp-on request remains pending while waiting for said output port to become not busy or is rejected; and

    said last stages including a plurality of output ports each having a threshold and logic responsive to said camp-on command for selectively camping-on a busy output port, accepting the camp-on command, waiting for said output port to become not busy, and then connecting said data message to said output port, or rejecting said camp-on command, when said output port is busy and previously camped-on, or busy and will not be available within said threshold.

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