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    BACKSCATTER-BASED POSITIONING
    471.
    发明公开
    BACKSCATTER-BASED POSITIONING 审中-公开

    公开(公告)号：US20240183971A1

    公开(公告)日：2024-06-06

    申请号：US18073496

    申请日：2022-12-01

    Applicant: QUALCOMM Incorporated

    Inventor： Xiaojie Wang ,  Jing Sun ,  Mohammad Tarek Fahim ,  Srinivas Yerramalli

    IPC: G01S13/76 ,  H04W64/00

    CPC classification number: G01S13/765 ,  H04W64/003

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support backscatter-based positioning. In a first aspect, a method of wireless communication includes transmitting a tag configuration message that indicates a first tag configuration and a second tag configuration. The method also includes transmitting a positioning reference signal (PRS). The method also includes receiving, from a first tag device, a first backscatter signal based on the PRS, and receiving, from a second tag device, a second backscatter signal based on the PRS. The method includes transmitting a measurement report that indicates a first round trip time (RTT) of the first tag device, and a second RTT of the second tag device. The first RTT is based on the first tag configuration and the first backscatter signal, and the second RTT is based on the second tag configuration and the second backscatter signal.

    BACKSCATTER-BASED POSITIONING
    472.
    发明公开
    BACKSCATTER-BASED POSITIONING 审中-公开

    公开(公告)号：US20240176011A1

    公开(公告)日：2024-05-30

    申请号：US18060331

    申请日：2022-11-30

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Tarek Fahim ,  Srinivas Yerramalli ,  Xiaojie Wang ,  Jing Sun

    IPC: G01S13/87 ,  G01S13/76 ,  H04W64/00

    CPC classification number: G01S13/878 ,  G01S13/765 ,  H04W64/003

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support backscatter-based positioning. In a first aspect, a method of wireless communication includes receiving multiple measurement reports associated with a tag device. The multiple measurement reports includes, for each transmission/reception point (TRP) of a group of TRPs, a measurement report of the TRP. The method also includes determining a position of the tag device based on the multiple measurement reports and a tag delay of the tag device. Other aspects and features are also claimed and described.

    Frame based operation for millimeter wave (mmWave) with receiver based contention
    477.
    发明授权
    Frame based operation for millimeter wave (mmWave) with receiver based contention 有权

    公开(公告)号：US11889510B2

    公开(公告)日：2024-01-30

    申请号：US17098303

    申请日：2020-11-13

    Applicant: QUALCOMM Incorporated

    Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Tao Luo

    IPC: H04W72/23 ,  H04L5/00 ,  H04W72/044 ,  H04W72/542

    CPC classification number: H04W72/23 ,  H04L5/0048 ,  H04W72/046 ,  H04W72/542 ,  H04W72/044

    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for frame based operation and medium contention procedures in wireless networks. In some aspects, devices of a wireless network may perform receiver side contention operations. To illustrate, reference signals from a receiving device may be transmitted to a transmitting device and used by the transmitting device to estimate interference for transmitter side transmissions. Such receiver side reference signals may more accurately reflect the interference profile that transmissions sent by the transmitting device will face, such as when operating in a spectrum shared with many devices. The transmitting device may utilize the beam(s) that satisfy interference criteria when receiving the reference signals to transmit data. Receiver side frame based operation may provide a more stable interference profile which enables better rate prediction, and the better rate prediction may increase reliability and overall network and medium throughput.

    Directional channel access using a narrow beam with multiple spatial streams
    478.
    发明授权
    Directional channel access using a narrow beam with multiple spatial streams 有权

    公开(公告)号：US11863276B2

    公开(公告)日：2024-01-02

    申请号：US17477349

    申请日：2021-09-16

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammed Ali Mohammed Hirzallah ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Xiaoxia Zhang

    IPC: H04B7/06 ,  H04B17/10 ,  H04B7/0426

    CPC classification number: H04B7/0695 ,  H04B7/043 ,  H04B7/0639 ,  H04B17/101

    Abstract: Methods, systems, and devices for wireless communication are described. Aspects of the disclosure describe narrow beam-based channel access that enables a device to communicate in a shared radio frequency spectrum band without performing channel access procedures. Specifically, aspects of the disclosure describe techniques for defining one or more directional beams as a narrow beam, where the relative narrowness of the beam may be determined in the context of interference (e.g., as opposed to being defined from a geometric perspective). For example, a particular beam may be determined to be a narrow beam, and therefore associated with communications in shared radio frequency spectrum bands without channel access procedures, based on one or more metrics and a number of spatial streams associated with the beam. A device may use such narrow beams for communications without channel access procedures in shared radio frequency spectrum bands.

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