US 11,456,784 B2 · Multiple input multiple output (MIMO) setup in millimeter wave (MMW) WLAN systems

Abstract

An AP/PCP may perform user selection/pairing/grouping based on a measurement of an analog transmission (e.g., signal to noise ratio (SNR) or signal to interference plus noise ratio (SINR)). The SNRs may be used, for example by the station, to determine best beams and/or beam pairs and/or worst beams and/or beam pairs. A station may feed back the best few beams and/or beam pairs for a Tx and Rx virtual antenna pair. A station may feed back the worst few beams for the Tx and Rx virtual antenna pair. The AP/PCP may receive the indication(s) and/or use the indication(s) to group the stations.

Claims20

Dependent claims

A station (STA) configured for multi-user multiple-input multiple-output (MU-MIMO) communications, the STA comprising:

a processor;
and
transmitter circuitry configured to transmit a MU-MIMO setup frame to a group of responder STAs comprising at least a first responder STA and a second responder STA, wherein the MU-MIMO setup frame indicates first antennas for MU-MIMO transmissions from the STA to the first responder STA and second antennas for MU-MIMO transmissions from the STA to the second responder STA;
the transmitter circuitry configured to transmit first MU-MIMO transmissions to the first responder STA based on the indication of the first antennas and second MU-MIMO transmissions to the second responder STA based on the indication of the second antennas.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/323,677Filed 18 May 2021 · continuation

Priority

21 Jul 2016

Published

US 2021/0028831 A12 Sep 2021

Granted

27 Sep 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04B 7/0452
MIMO systems: multi-user MIMO systems
H04B 7/0417
MIMO systems: feedback systems
H04B 7/0619
Of weighted versions of same signal: using feedback from receiving side
H04W 84/12
Small scale networks; Flat hierarchical networks: wLAN [Wireless Local Area Networks]

Family

Application62/365,141Us provisional application · filed 21 Jul 2016

PCT/US2017/043331Parent of this continuation · filed 21 Jul 2017

US 2021/0273688 A1Pre-grant publication · published 2 Sep 2021

Application16/319,077Parent of this continuation

US 11,012,124 B2Parent of this continuation

US 2021/0028831 A1Published application

US 11,456,784 B2This patent

From the US filing history. Foreign family members aren’t listed.

Multiple input multiple output (MIMO) setup in millimeter wave (MMW) WLAN systems

Life of this patent

Multiple input multiple output (MIMO) setup in millimeter wave (MMW) WLAN systems

Life of this patent

Abstract

Claims20