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Uplink multi-user multiple input multiple output for wireless local area network

  • US 9,825,678 B2
  • Filed: 11/25/2014
  • Issued: 11/21/2017
  • Est. Priority Date: 11/26/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving an uplink traffic characteristic information signal from each of a plurality of communication devices;

    selecting multiple communication devices of the plurality of communication devices as members of a client uplink group based at least on traffic information indicated by the respective uplink traffic characteristic information signals;

    transmitting an uplink group definition frame to each member of the client uplink group, the uplink group definition frame indicating an uplink multi-user multiple input multiple output (MU-MIMO) transmission schedule having a start time for the client uplink group for members of the client uplink group to simultaneously transmit to an access point;

    triggering the members of the client uplink group to transmit uplink MU-MIMO data frames simultaneously according to the uplink MU-MIMO transmission schedule, including transmitting a first communication frame to the client uplink group to prompt simultaneous transmission of independent uplink MU-MIMO data units by members of the client uplink group according to the uplink MU-MIMO schedule; and

    simultaneously receiving the independent uplink MU-MIMO data units from the members of the client uplink group according to the uplink MU-MIMO schedule.

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