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    Control signaling for uplink frequency selective precoding
    14.
    发明授权
    Control signaling for uplink frequency selective precoding 有权

    公开(公告)号：US12250677B2

    公开(公告)日：2025-03-11

    申请号：US17811997

    申请日：2022-07-12

    Applicant: APPLE INC.

    Inventor： Yushu Zhang ,  Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Hong He ,  Seyed Ali Akbar Fakoorian ,  Wei Zeng ,  Weidong Yang

    IPC: H04W72/1268 ,  H04B7/06 ,  H04L5/00 ,  H04W72/23

    Abstract: Systems and methods using control signaling for uplink frequency selective precoding at a user equipment (UE) are disclosed herein. A base station may indicate a transmission rank indicator (TRI), a wideband transmission precoder matrix indicator (TPMI), and one or more subband TPMI(s) to the UE. The base station may indicate, to the UE, whether to use the wideband TPMI or a subband TPMI to precode a physical uplink shared channel (PUSCH) transmission from the UE to the base station. The UE then precodes (and transmits) the PUSCH accordingly. Methods of UE application of the indicated subband TPMI(s) to subbands of the bandwidth in which a PUSCH may be transmitted are described. Methods accounting for a UE capability as to non-coherent, partial-coherent, and/or coherent precoding are described. Methods of assigning TPMI(s) to subbands in view of multiple transmission reception point (TRP) use by the UE for UE transmission are described.

    Mobility state-based SDT procedures
    18.
    发明授权
    Mobility state-based SDT procedures 有权

    公开(公告)号：US12245314B2

    公开(公告)日：2025-03-04

    申请号：US17593229

    申请日：2021-03-31

    Applicant: APPLE INC.

    Inventor： Fangli Xu ,  Dawei Zhang ,  Haijing Hu ,  Sethuraman Gurumoorthy ,  Srirang A. Lovlekar ,  Yuqin Chen ,  Zhibin Wu

    IPC: H04W76/27 ,  H04W8/02 ,  H04W76/30

    Abstract: Systems and methods for small data transmissions (SDTs) between a user equipment (UE) and a network are disclosed herein. In some embodiments, the UE determines whether to perform an SDT procedure by comparing its own mobility state to an SDT mobility state condition provided by the network. The UE may also determine whether to perform the SDT procedure by comparing the size of user plane (UP) data to be sent with the SDT procedure to an SDT mobility-based data amount threshold provided by the network. Upon entering an RRC_INACTIVE state, the UE may start a validity timer relative to any such SDT mobility state condition and/or SDT mobility-based data amount threshold, and invalidate these once the validity timer expires. In some disclosed embodiments, the UE reports its determined mobility state to the network during an SDT procedure so that the network can accordingly select configuration parameters for SDT procedures.

    Gradual Timing Adjustment for Wireless Devices in a Non-Terrestrial Network
    20.
    发明申请
    Gradual Timing Adjustment for Wireless Devices in a Non-Terrestrial Network 有权

    公开(公告)号：US20250071710A1

    公开(公告)日：2025-02-27

    申请号：US18726251

    申请日：2022-01-06

    Applicant: Apple Inc.

    Inventor： Jie Cui ,  Yang Tang ,  Qiming Li ,  Chunxuan Ye ,  Manasa Raghavan ,  Xiang Chen ,  Huaning Niu ,  Dawei Zhang ,  Hong He

    IPC: H04W56/00 ,  H04W84/06

    Abstract: This disclosure relates to techniques for a wireless device to perform gradual timing adjustments in a non-terrestrial wireless communication system. According to the techniques described herein, a wireless device may establish a non-terrestrial network based wireless link with a cellular base station. The wireless device may detect a trigger for changing a gradual timing adjustment rate from a first gradual timing adjustment rate to a second gradual timing adjustment rate. The wireless device may determine a time window for which to perform gradual timing adjustment at the second gradual timing adjustment rate. The wireless device may perform gradual timing adjustment at the second gradual timing adjustment rate for the time window.

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