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Contention-based orthogonal frequency division multiple access (OFDMA) communication

  • US 10,201,017 B2
  • Filed: 04/11/2016
  • Issued: 02/05/2019
  • Est. Priority Date: 04/09/2015
  • Status: Active Grant
First Claim
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1. A method for communicating in a wireless communication network, the method comprising:

  • receiving, at a communication device, a trigger frame configured to;

    trigger a contention-based uplink orthogonal frequency multiple access (OFDMA) transmission by multiple communication devices, wherein the trigger frame indicates that multiple communication devices can contend for a contiguous band of OFDM tones as part of the contention-based uplink OFDMA transmission, andindicate a length of the contention-based uplink OFDMA transmission,wherein the trigger frame includes power control information that indicates i) a transmission power of the trigger frame and ii) a target received power for the contention-based uplink OFDMA transmission;

    determining, at the communication device, a transmission power level using the power control information indicating the transmission power of the trigger frame and the target received power for the contention-based uplink OFDMA transmission;

    responsive to receiving the trigger frame, generating, at the communication device, a data unit having the length indicated by the trigger frame; and

    responsive to receiving the trigger frame, transmitting, with the communication device, the generated data unit at the determined transmission power level as part of the contention-based uplink OFDMA transmission via the contiguous band of OFDM tones.

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