Method and apparatus for applying phase rotation in broadband with 80MHz based preamble puncturing performed in WLAN system

    公开(公告)号:US11929862B2

    公开(公告)日:2024-03-12

    申请号:US18201494

    申请日:2023-05-24

    CPC classification number: H04L27/2621 H04L27/2618 H04W84/12

    Abstract: A method and an apparatus for transmitting an EHT PPDU to a WLAN system are proposed. Specifically, a transmitter generates and transmits an EHT PPDU to a receiver through a 320 MHz band from which an 80 MHz band is punctured. The EHT PPDU includes a legacy preamble and an EHT field. The legacy preamble includes an L-STF and an L-LTF. The legacy preamble is generated by applying a first phase rotation value. The first phase rotation value is obtained on the basis of a second phase rotation value and a third phase rotation value. The second phase rotation value is a phase rotation value that repeats a phase rotation value defined for the 80 MHz band in an 802.11ax system. The third phase rotation value is a phase rotation value defined in unit of the 80 MHz band in the 320 MHz band on the basis of an optimal PAPR of the L-STF and L-LTF. The first phase rotation value is [1 1 −1 −1 −j −j j j 1 1 −1 −1 −j −j j j].

    IMPROVED TRIGGER FRAME
    27.
    发明公开

    公开(公告)号:US20230379109A1

    公开(公告)日:2023-11-23

    申请号:US18034508

    申请日:2021-11-17

    CPC classification number: H04L5/0048 H04L5/0094 H04L27/2602 H04W72/0453

    Abstract: The present specification proposes an improved trigger frame structure for triggering a plurality of STAs and a method for allocating bandwidths and RUs to the plurality of STAs on the basis of the improved trigger frame structure. Here, according to an embodiment of the present specification, the plurality of STAs may be STAs supporting different standards. Also, according to another embodiment of the present specification, TB PPDUs transmitted by the plurality of STAs on the basis of the improved trigger frame structure may be A-PPDUs.

    METHOD AND DEVICE FOR FORMING SIGNAL FIELD INCLUDING CONTROL INFORMATION

    公开(公告)号:US20230239071A1

    公开(公告)日:2023-07-27

    申请号:US18128752

    申请日:2023-03-30

    CPC classification number: H04L1/001 H04L1/0003 H04L1/0079

    Abstract: A transmission and reception PPDU according to the present specification may include a first control signal field and a second control signal field. Overflowed information from the first control signal field may include a first encoding block of a common field of the second control signal field. In addition, the common field of the second control signal field may include various numbers of encoding blocks and various numbers of RU allocation subfields on the basis of the characteristics of the transmission and reception PPDU. In addition, the overflowed information may be included in a plurality of content channels using various methods.

    Method and apparatus for applying phase rotation in broadband with 80MHz based preamble puncturing performed in WLAN system

    公开(公告)号:US11683212B2

    公开(公告)日:2023-06-20

    申请号:US17268201

    申请日:2019-08-26

    CPC classification number: H04L27/2621 H04L27/2618 H04W84/12

    Abstract: A method and an apparatus for transmitting an EHT PPDU to a WLAN system are proposed. Specifically, a transmitter generates and transmits an EHT PPDU to a receiver through a 320 MHz band from which an 80 MHz band is punctured. The EHT PPDU includes a legacy preamble and an EHT field. The legacy preamble includes an L-STF and an L-LTF. The legacy preamble is generated by applying a first phase rotation value. The first phase rotation value is obtained on the basis of a second phase rotation value and a third phase rotation value. The second phase rotation value is a phase rotation value that repeats a phase rotation value defined for the 80 MHz band in an 802.11ax system. The third phase rotation value is a phase rotation value defined in unit of the 80 MHz band in the 320 MHz band on the basis of an optimal PAPR of the L-STF and L-LTF. The first phase rotation value is [1 1 −1 −1 −j −j j j 1 1 −1 −1 −j −j j j].

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