Method and apparatus for receiving PPDU through broadband in wireless LAN system

    公开(公告)号:US11996966B2

    公开(公告)日:2024-05-28

    申请号:US17597584

    申请日:2020-07-21

    CPC classification number: H04L27/2603 H04L5/0094 H04L27/2613 H04W84/12

    Abstract: Proposed are a method and an apparatus for receiving a PPDU in a wireless LAN system. Specifically, a reception STA receives a PPDU from a transmission STA through a broadband and decodes the PPDU. The broadband is a 320 MHz band or a 160+160 MHz band. The PPDU includes a first field and a second field. The first field includes an L-STF and an L-LTF. The first field is generated on the basis of a first phase rotation value. The first phase rotation value is generated on the basis of a second phase rotation value and a third phase rotation value. The second phase rotation value is obtained by repeating a phase rotation value for a 160 MHz band, defined in an 802.11ax wireless LAN system.

    Method and device for receiving feedback frame in wireless LAN system

    公开(公告)号:US11973547B2

    公开(公告)日:2024-04-30

    申请号:US17595189

    申请日:2019-09-19

    CPC classification number: H04B7/0417 H04B7/0617 H04B7/0634 H04W16/28 H04W84/12

    Abstract: Proposed are a method and device for receiving a feedback frame in a wireless LAN system. Specifically, a first STA transmits an NDPA frame to a second STA. The first STA transmits an NDP frame to the second STA. The first STA receives, from the second STA, a feedback frame transmitted on the basis of the NDP frame. The feedback frame includes information about a beamforming feedback matrix. The information about the beamforming feedback matrix includes a first bit for the index difference between quantized phi of adjacent subcarriers, and a second bit for the index difference between quantized psi of the adjacent subcarriers. The adjacent subcarriers are two adjacent subcarriers starting with the first subcarrier among all of the subcarriers. The first subcarrier is either the left edge subcarrier or the right edge subcarrier. The quantized phi and psi are information about beamforming angles.

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