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    SECONDARY CHANNEL ACCESS
    1.
    发明公开
    SECONDARY CHANNEL ACCESS 审中-公开

    公开(公告)号：US20240306194A1

    公开(公告)日：2024-09-12

    申请号：US18600545

    申请日：2024-03-08

    申请人： NXP USA, Inc.

    发明人： Kiseon Ryu ,  Liwen Chu ,  Rui Cao ,  Huizhao Wang ,  Hongyuan Zhang

    IPC分类号： H04W74/08

    CPC分类号： H04W74/08

    摘要： In an IEEE 802.11 wireless system, a wireless STA is configured to access a secondary channel by receiving an inter-BSS PPDU which identifies a transmission channel bandwidth for the inter-BSS PPDU and TXOP duration, and then accessing a secondary channel which excludes the transmission channel bandwidth identified by the inter-BSS PPDU and a primary 20 MHz channel for the wireless STA device from a basic service set (BSS) operating bandwidth associated with the wireless STA device before exchanging one or more frames on the secondary channel during the TXOP duration without using the primary 20 MHz channel for the wireless STA device, and then switching back to the primary 20 MHz channel before the TXOP duration ends.

    LOW POWER LISTENING MODE FOR STATIONS OF A WIRELESS NETWORK
    2.
    发明公开
    LOW POWER LISTENING MODE FOR STATIONS OF A WIRELESS NETWORK 审中-公开

    公开(公告)号：US20240147363A1

    公开(公告)日：2024-05-02

    申请号：US18385327

    申请日：2023-10-30

    申请人： NXP USA, Inc.

    发明人： Liwen Chu ,  Rui Cao ,  Kiseon Ryu ,  Hongyuan Zhang ,  Huizhao Wang

    IPC分类号： H04W52/02

    CPC分类号： H04W52/0229 ,  H04W84/12

    摘要： A method of a low power listening mode includes announcing, by a first wireless device is operating in a low power listening mode. The first wireless device in the low power listening mode receives an initial frame having a single spatial stream and a low data rate from a second wireless device. The frame requests a frame exchange with the first wireless device. The low data rate is lower than a maximum data rate of the first wireless device. A reply to the initial frame is transmitted to the second wireless device in a single spatial stream with the low data rate. The reply acknowledges an association with the second wireless device. The first wireless device wakes from the low power listening mode to a full capacity mode, and performs a frame exchange with the second wireless device in the full capacity mode.

    NETWORK ALLOCATION VECTOR (NAV) OPERATION IN MULTI-ACCESS POINT (AP) COORDINATION
    3.
    发明公开
    NETWORK ALLOCATION VECTOR (NAV) OPERATION IN MULTI-ACCESS POINT (AP) COORDINATION 审中-公开

    公开(公告)号：US20240107604A1

    公开(公告)日：2024-03-28

    申请号：US18372908

    申请日：2023-09-26

    申请人： NXP USA, Inc.

    发明人： Kiseon Ryu ,  Liwen Chu ,  Rui Cao ,  Hongyuan Zhang ,  Huizhao Wang

    IPC分类号： H04W76/15

    CPC分类号： H04W76/15

    摘要： Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a wireless transceiver configured to receive a first frame from a first wireless access point (AP) for multi-AP coordination that is not associated with the wireless device and a second frame from a second wireless AP for multi-AP coordination that is associated with the wireless device and a controller configured to set a network allocation vector (NAV) timer of the wireless device to a non-zero value in response to the first frame and the second frame. The wireless transceiver is further configured to transmit a physical protocol data unit (PPDU) to the second wireless AP even if the NAV timer of the wireless device is non-zero.

    PRIMARY AND NON-PRIMARY SUBCHANNELS IN A BASIC SERVICE SET OF A WIRELESS NETWORK
    4.
    发明公开
    PRIMARY AND NON-PRIMARY SUBCHANNELS IN A BASIC SERVICE SET OF A WIRELESS NETWORK 审中-公开

    公开(公告)号：US20240097838A1

    公开(公告)日：2024-03-21

    申请号：US18370790

    申请日：2023-09-20

    申请人： NXP USA, Inc.

    发明人： Liwen Chu ,  Kiseon Ryu ,  Hongyuan Zhang ,  Rui Cao

    IPC分类号： H04L5/00 ,  H04W74/08

    CPC分类号： H04L5/0037 ,  H04W74/0816

    摘要： Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a method includes selecting backoff 20 MHz channels of an operating channel bandwidth (BW) of a Basic Service Set (BSS), and announcing to a second wireless device the operating channel BW of the BSS for use in communicating between the wireless device and the second wireless device, subchannels of the operating channel bandwidth, and backoff 20 MHz channels of each subchannel, wherein one subchannel is a primary subchannel and one subchannel is a non-primary subchannel. A data unit is transmitted to the second wireless device in a backoff 20 MHz channel of the non-primary subchannel.

    Trigger frame based method and device for communications
    8.
    发明授权
    Trigger frame based method and device for communications 有权

    公开(公告)号：US11638238B2

    公开(公告)日：2023-04-25

    申请号：US17139656

    申请日：2020-12-31

    申请人： NXP USA, Inc.

    发明人： Liwen Chu ,  Rui Cao ,  Sudhir Srinivasa ,  Hongyuan Zhang ,  Young Hoon Kwon ,  Hui-Ling Lou

    IPC分类号： H04W4/00 ,  H04W72/04

    摘要： Embodiments of a method and an apparatus for multi-link data transmission are disclosed. In an embodiment, a method for communications involves at a first device, transmitting, to a second device, a trigger frame that solicits at least one Physical layer Protocol Data Unit (PPDU) for uplink transmission, wherein the trigger frame includes a standard-compatible common info field that includes a trigger type field and a standard-compatible user info list field that includes at least one user info field, wherein the trigger frame includes a solicited Trigger-Based (TB) type indicator in a field in the trigger frame other than the trigger type field, and receiving, at the first device, at least one PPDU from the second device in response to the solicited TB type indicator that was transmitted in the trigger frame by the first device.

    Determining number of midambles in a packet
    9.
    发明授权
    Determining number of midambles in a packet 有权

    公开(公告)号：US11533209B2

    公开(公告)日：2022-12-20

    申请号：US16907848

    申请日：2020-06-22

    申请人： NXP USA, INC.

    发明人： Yan Zhang ,  Hongyuan Zhang ,  Rui Cao

    IPC分类号： H04W24/04 ,  H04W72/02 ,  H04W80/02 ,  H04L27/26 ,  H04L5/00 ,  H04W24/08

    摘要： A communication device receives a physical layer (PHY) protocol data unit (PPDU). The PPDU includes i) a PHY preamble and ii) PHY data portion that includes one or more PHY midambles, and the PHY preamble includes i) an indication of a length of the PPDU, and ii) an indication of a periodicity of PHY midambles in the PHY data portion. The communication device calculates a number of PHY midambles in the PPDU using i) the indication of the length of the PPDU, and ii) the indication of the periodicity of PHY midambles. The communication device calculates a reception time for the PPDU using the calculated number of PHY midambles, and processes the PPDU using the calculated reception time.

    Hybrid ARQ MAC support in WLAN devices
    10.
    发明授权
    Hybrid ARQ MAC support in WLAN devices 有权

    公开(公告)号：US11343026B1

    公开(公告)日：2022-05-24

    申请号：US16689107

    申请日：2019-11-20

    申请人： NXP USA, Inc.

    发明人： Liwen Chu ,  Rui Cao ,  Hongyuan Zhang ,  Hui-Ling Lou ,  Yan Zhang

    IPC分类号： H04W84/12 ,  H04L1/18

    摘要： A method for Wireless Local-Area Network (WLAN) communication in a WLAN device includes receiving from a remote WLAN device an announcement of a maximal Hybrid Automatic Repeat Request (HARQ) buffering capability of a receiver of the remote WLAN device. A HARQ Physical-layer Protocol Data Unit (HARQ PPDU), which includes one or more HARQ coding units, is constructed in the WLAN device in response to the announcement. The HARQ PPDU is transmitted from the WLAN device to the remote WLAN device. One or more of the HARQ coding units are retransmitted in response to a request from the remote WLAN device.