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    Apparatus and method for wireless communication
    31.
    发明授权
    Apparatus and method for wireless communication 有权

    公开(公告)号：US11792062B2

    公开(公告)日：2023-10-17

    申请号：US17333404

    申请日：2021-05-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Yan Xin ,  Jung Hoon Suh ,  Osama S. Aboul-Magd ,  Kwok Shum Au ,  Mohamed Adel Salem

    IPC: H04L27/26 ,  H03M13/25 ,  H04L27/28 ,  H04W84/12

    CPC classification number: H04L27/2634 ,  H03M13/255 ,  H04L27/28 ,  H04W84/12

    Abstract: The disclosed systems and methods for wireless communication directed are towards (i) encoding data bits to be transmitted over a multiple resource unit (MRU) in a wireless local area network (WLAN), (ii) creating a group of the encoded data bits based on a predetermined criterion, (iii) parsing the encoded bits in the group based on a proportional ratio associated with the MRU, (iv) modulating the parsed encoded data bits to generate modulated encoded data symbols, (v) mapping the modulated encoded data symbols to data subcarriers to generate encoded data subcarriers, the data subcarriers being associated with respective resource units (RUs) of the MRU, (vi) duplicating the encoded data subcarriers within the respective RUs, (vii) shuffling the duplicate encoded data subcarriers across the respective RUs of the MRU, and (viii) transmitting the encoded data subcarriers, and the duplicate encoded data subcarriers over the MRU in the WLAN.

    METHOD AND SYSTEM FOR CHANNEL STATE INFORMATION FEEDBACK USING SUB-CODEBOOK BASED TRELLIS CODED QUANTIZATION
    32.
    发明申请
    METHOD AND SYSTEM FOR CHANNEL STATE INFORMATION FEEDBACK USING SUB-CODEBOOK BASED TRELLIS CODED QUANTIZATION 有权

    公开(公告)号：US20220360305A1

    公开(公告)日：2022-11-10

    申请号：US17307031

    申请日：2021-05-04

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Jung Hoon Suh ,  Yan Xin ,  Osama Aboul-Magd ,  Kwok Shum Au

    IPC: H04B7/06 ,  H04L1/00 ,  H04L25/03

    Abstract: Aspects of the disclosure provide for methods and systems for Sub-codebook based Trellis Coded Quantization for CSI Feedback. An aspect of the disclosure provides method executed by a receiver. The method includes receiving a signal from a transmitter, via a communication channel between the receiver and the transmitter. The method further includes estimating parameters associated with the channel based on the received signal. The method further includes obtaining phase information from the estimated parameters. The method further includes applying a trellis coded quantization (TCQ) scheme to the obtained phase information by mapping each sub-codebook index of a set of sub-codebook indices to output bits of each trellis branch making the distance between sub-codebooks maximally equal. The method further includes transmitting a channel state information (CSI) measurement feedback to the transmitter, the CSI measurement feedback based on the TCQ scheme and comprising one or more of: a beginning state, input bits to the TCQ scheme, and a sub-codebook index.

    System and method for coordinated beamforming for overlapping basic service set in WLAN
    35.
    发明授权
    System and method for coordinated beamforming for overlapping basic service set in WLAN 有权

    公开(公告)号：US10966102B2

    公开(公告)日：2021-03-30

    申请号：US16372907

    申请日：2019-04-02

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Osama Aboul-Magd ,  Jung Hoon Suh ,  Kwok Shum Au

    IPC: H04W16/28 ,  H04L5/00 ,  H04W92/20 ,  H04W84/12 ,  H04W88/08

    Abstract: Embodiments are provided for enabling a coordinated beamforming (CB) mechanism in WLAN scenarios. In an embodiment, an AP sends a Feedback Request (FBR) frame to each one of the STAs in the OBSSs. The OBSSs comprise the STAs and a plurality of APs including the AP. The AP then receives a feedback frame from each STA of the STAs that participate in the CB transmission. The feedback frame includes channel state information (CSI) of the STA. The CSI enables the sending AP of performing CB on downlink. In an embodiment, the AP receives an initiate CB frame from a second AP initiating a CB transmission, and then sends an ACK frame to the second AP before sending the FBR frame to each one of the STAs. The AP starts the CB transmission with each one of the other APs that participate in the CB transmission.

    System and method for OFDMA resource management in WLAN
    36.
    发明授权
    System and method for OFDMA resource management in WLAN 有权

    公开(公告)号：US10893524B2

    公开(公告)日：2021-01-12

    申请号：US16554065

    申请日：2019-08-28

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Osama Aboul-Magd ,  Kwok Shum Au ,  Jung Hoon Suh

    IPC: H04W72/04 ,  H04W56/00 ,  H04L5/00 ,  H04W84/12

    Abstract: Embodiments are provided for implementing a control function in a Wireless Local Area Network (WLAN) for allocation of resources to multiple stations (STAs) to enable Orthogonal Frequency Division Multiple Access (OFDMA) communications. An embodiment method includes determining a plurality of transmission resources for OFDMA communications of a plurality of STAs in the WLAN. The determination includes allocating a plurality of subcarriers to the STAs. The method further includes signaling the determined transmission resources to the STAs. The signaling of the transmission resources is piggybacked on at least one of data and management frames, such as in a sub-header of a MAC frame, or is an explicit signaling, such as in one or more dedicated fields of a traffic specification information element. The transmission resources for OFDMA communications allow simultaneous transmissions of the STAs in the WLAN.

    Transmission of BSS Load Element in Wireless Local Area Network System
    37.
    发明申请
    Transmission of BSS Load Element in Wireless Local Area Network System 审中-公开

    公开(公告)号：US20190335382A1

    公开(公告)日：2019-10-31

    申请号：US16503815

    申请日：2019-07-05

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Kwok Shum Au ,  Ming Gan ,  Xun Yang ,  Osama Aboul-Magd

    IPC: H04W48/08 ,  H04L5/00 ,  H04W48/20 ,  H04W74/00 ,  H04W72/04

    Abstract: A method and system for providing utilization information for a basic service set (BSS) in a wireless local area network system, performed by an access point, including generating and transmitting a BSS load element including a capable STA count field, a plurality of frequency and/or spatial stream underutilization fields, and a plurality of delta observable secondary channel utilization fields. The capable STA count field indicates a total number of STAs currently associated with the BSS. Each of the frequency and/or spatial stream underutilization fields indicates underutilized frequency and/or spatial stream domain resources on Orthogonal Frequency Division Multiple Access resource units for each channel, and each of the frequency and/or spatial stream underutilization fields is calculated based on RU size. Each of the delta observable secondary channel utilization fields indicates a utilization for a subband within a secondary channel calculated based on observable utilization on the corresponding secondary channel.

    Transmission of BSS load element in wireless local area network system
    38.
    发明授权
    Transmission of BSS load element in wireless local area network system 有权

    公开(公告)号：US10349340B2

    公开(公告)日：2019-07-09

    申请号：US15910963

    申请日：2018-03-02

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Kwok Shum Au ,  Ming Gan ,  Xun Yang ,  Osama Aboul-Magd

    IPC: H04L5/00 ,  H04W48/08 ,  H04W48/20 ,  H04W72/04 ,  H04B7/0452 ,  H04W84/12

    Abstract: A method and system for providing utilization information for a basic service set (BSS) in a wireless local area network system, performed by an access point, including generating and transmitting a BSS load element including a capable STA count field, a plurality of frequency and/or spatial stream underutilization fields, and a plurality of delta observable secondary channel utilization fields. The capable STA count field indicates a total number of STAs currently associated with the BSS. Each of the frequency and/or spatial stream underutilization fields indicates underutilized frequency and/or spatial stream domain resources on Orthogonal Frequency Division Multiple Access resource units for each channel, and each of the frequency and/or spatial stream underutilization fields is calculated based on RU size. Each of the delta observable secondary channel utilization fields indicates a utilization for a subband within a secondary channel calculated based on observable utilization on the corresponding secondary channel.

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