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Mitigating effects of identified interference with adaptive CCA threshold

  • US 8,666,319 B2
  • Filed: 07/15/2011
  • Issued: 03/04/2014
  • Est. Priority Date: 07/15/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • at a first wireless device that is configured to wirelessly communicate with one or more second wireless devices in a wireless network in a frequency band, receiving energy on a channel in the frequency band;

    analyzing received energy to detect interference on the channel, including two or more interferers in the frequency band;

    determining a type, a receive signal strength, and a duty cycle for each of the two or more interferers;

    adjusting a clear channel assessment threshold used when accessing the channel by an amount depending on the type of interference detected, the adjusting including;

    determining a proposed new channel assessment threshold individually for each interferer; and

    determining an overall clear channel assessment threshold from the proposed new channel assessment thresholds for the individual interferers;

    computing a projected throughput improvement based on the overall clear channel assessment threshold; and

    using the proposed new clear channel assessment threshold at the first wireless device and/or one or more second wireless devices.

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