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SYSTEM AND METHOD FOR CONTENTION BASED TONES IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM

  • US 20080040763A1
  • Filed: 10/26/2007
  • Published: 02/14/2008
  • Est. Priority Date: 02/06/1995
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a first remote unit for communicating with a multipoint-to-point host unit using an orthogonal frequency division multiplexing waveform comprising a plurality of orthogonal carriers modulated using an inverse Fourier transform, the first remote unit programmed to transmit at least one symbol representing a request for bandwidth allocation on a first carrier of the plurality of orthogonal carriers; and

    a second remote unit for communicating with the multipoint-to-point host unit using an orthogonal frequency division multiplexing waveform comprising a plurality of orthogonal carriers modulated using an inverse Fourier transform, the second remote unit programmed to transmit at least one symbol representing a request for bandwidth allocation on the first carrier of the plurality of orthogonal carriers;

    wherein the second remote unit is further programmed to determine when a collision has occurred on the first carrier of the plurality of orthogonal carriers between transmissions from the first remote unit and transmissions from the second remote unit.

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