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    Channel Access Scheme Enhancements
    331.
    发明申请
    Channel Access Scheme Enhancements 有权

    公开(公告)号：US20220304054A1

    公开(公告)日：2022-09-22

    申请号：US17442113

    申请日：2020-08-05

    Applicant: Apple Inc.

    Inventor： Weidong Yang ,  Oghenekome Oteri ,  Sigen Ye ,  Haitong Sun ,  Hong He ,  Jie Cui ,  Chunxuan Ye ,  Wei Zeng ,  Dawei Zhang ,  Chunhai Yao ,  Yushu Zhang ,  Yang Tang

    IPC: H04W74/08 ,  H04W72/04

    Abstract: Apparatuses, systems, and methods for channel access scheme enhancements for systems operating in unlicensed higher frequency bands. A wireless device may perform channel access detection (CAD) measurements on a channel at a first periodicity, determine a CAD metric based on the CAD measurements at a second periodicity, and select, for the channel, a first channel access scheme from a plurality of channel access schemes based on comparison of the CAD metric to a threshold. The first channel access scheme may include a first set of channel access procedures that may define physical channels and signals to utilize respective channel procedures. In instances when the CAD metric is below the threshold, the first channel access scheme may include accessing a channel using a first listen before talk (LBT) procedure that is less restrictive than a second LTB procedure used when the CAD metric is above the threshold.

    SRS Antenna Switching Enhancement
    333.
    发明申请
    SRS Antenna Switching Enhancement 有权

    公开(公告)号：US20220303973A1

    公开(公告)日：2022-09-22

    申请号：US17437935

    申请日：2020-10-12

    Applicant: Apple Inc.

    Inventor： Haitong Sun ,  Hong He ,  Wei Zeng ,  Dawei Zhang ,  Chunxuan Ye ,  Sigen Ye ,  Weidong Yang ,  Chunhai Yao ,  Jie Cui ,  Yang Tang ,  Yushu Zhang

    IPC: H04W72/04 ,  H04L5/00 ,  H04B7/0413

    Abstract: Apparatuses, systems, and methods for SRS antenna switching. A UE may transmit, to a base station, a capability message indicating an antenna configuration associated with SRS antenna switching e.g., via as RRC signaling. The capability message may indicate at least one of (and/or one or more of) a one transmit point (1T) and six receive point (6R) SRS resource set configuration, a 1T8R SRS resource set configuration, a 2T6R SRS resource set configuration, a 2T8R SRS resource set configuration, and/or a 4T8R SRS resource set configuration. The UE may receive, from the base station, a configuration message, e.g., via RRC signaling. The configuration message may indicate an SRS antenna switching configuration based, at least in part, on the capability message. The UE may transmit, to the base station, one or more SRSs, e.g., according to the SRS antenna switching configuration.

    Wireless Device Initiated Channel Occupancy in Unlicensed Spectrum
    335.
    发明申请
    Wireless Device Initiated Channel Occupancy in Unlicensed Spectrum 有权

    公开(公告)号：US20220303781A1

    公开(公告)日：2022-09-22

    申请号：US17437909

    申请日：2020-10-15

    Applicant: Apple Inc.

    Inventor： Sigen Ye ,  Oghenekome Oteri ,  Weidong Yang ,  Wei Zeng ,  Hong He ,  Yushu Zhang ,  Haitong Sun ,  Huaning Niu ,  Chunhai Yao ,  Dawei Zhang

    IPC: H04W16/14 ,  H04W76/10 ,  H04W74/08

    Abstract: This disclosure relates to techniques for a wireless device to initiate channel occupancy in unlicensed spectrum in a wireless communication system. The wireless device may establish a wireless link with a cellular base station. The wireless device may determine to perform an uplink transmission to the cellular base station on an unlicensed frequency channel. The wireless device may determine whether the cellular base station has channel occupancy of the unlicensed frequency channel. The wireless device may determine whether to initiate channel occupancy of the unlicensed frequency channel. The decision whether to initiate channel occupancy may be based at least in part on whether the cellular base station has channel occupancy of the unlicensed frequency channel.

    Wireless device initiated channel occupancy in unlicensed spectrum
    337.
    发明授权
    Wireless device initiated channel occupancy in unlicensed spectrum 有权

    公开(公告)号：US12289606B2

    公开(公告)日：2025-04-29

    申请号：US17437909

    申请日：2020-10-15

    Applicant: Apple Inc.

    Inventor： Sigen Ye ,  Oghenekome Oteri ,  Weidong Yang ,  Wei Zeng ,  Hong He ,  Yushu Zhang ,  Haitong Sun ,  Huaning Niu ,  Chunhai Yao ,  Dawei Zhang

    IPC: H04W16/14 ,  H04W74/0808 ,  H04W76/10

    Abstract: This disclosure relates to techniques for a wireless device to initiate channel occupancy in unlicensed spectrum in a wireless communication system. The wireless device may establish a wireless link with a cellular base station. The wireless device may determine to perform an uplink transmission to the cellular base station on an unlicensed frequency channel. The wireless device may determine whether the cellular base station has channel occupancy of the unlicensed frequency channel. The wireless device may determine whether to initiate channel occupancy of the unlicensed frequency channel. The decision whether to initiate channel occupancy may be based at least in part on whether the cellular base station has channel occupancy of the unlicensed frequency channel.

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