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    Network signaling for radio resource management enhancement in high speed train (HST) scenarios
    205.
    发明授权
    Network signaling for radio resource management enhancement in high speed train (HST) scenarios 有权

    公开(公告)号：US12289610B2

    公开(公告)日：2025-04-29

    申请号：US17437787

    申请日：2021-04-01

    Applicant: Apple Inc.

    Inventor： Huaning Niu ,  Jie Cui ,  Dawei Zhang ,  Yang Tang ,  Manasa Raghavan ,  Qiming Li ,  Xiang Chen ,  Haitong Sun ,  Yushu Zhang

    IPC: H04W16/18 ,  H04W4/44 ,  H04W36/32 ,  H04W36/08

    Abstract: A network may transmit either beam deployment information or beam number information to a user equipment (UE) carried on a train and configured for operation in the millimeter wave band. The deployment information may include deployment related distance parameters or azimuth angle spread parameters. The beam number information may indicate a number of network beams associated with a current cell. The UE may determine a number of UE receive beams based on deployment information or the network-indicated number of network beams. The UE may transmit feedback to the network, indicating the number of UE receive beams. Alternatively, the network may send a configuration message indicating a first number of UE receive beams to the UE, which the UE may treat as an upper bound or lower bound in its determination of a desired number of UE receive beams. The UE may transmit the desired number to the network.

    Wireless device initiated channel occupancy in unlicensed spectrum
    206.
    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.

    Methods and apparatus for PRACH resource determination and RA-RNTI computation in wireless communication
    208.
    发明授权
    Methods and apparatus for PRACH resource determination and RA-RNTI computation in wireless communication 有权

    公开(公告)号：US12284680B2

    公开(公告)日：2025-04-22

    申请号：US17456304

    申请日：2021-11-23

    Applicant: Apple Inc.

    Inventor： Hong He ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Huaning Niu ,  Jie Cui ,  Oghenekome Oteri ,  Wei Zeng ,  Yang Tang

    IPC: H04W74/0833 ,  H04W72/0446 ,  H04L27/26

    Abstract: Aspects herein relate to wireless devices, circuits, and methods for determining a PRACH resource mapping comprising a starting symbol position within a reference slot, wherein the starting symbol position is determined based, at least in part, on a subcarrier spacing configuration of PRACH resources of a wireless network that a wireless device is operating on; and using the radio to transmit a RACH preamble and an associated RA-RNTI via the determined PRACH resource mapping. Further aspects herein relate to devices, circuits, and methods for using a modified RA-RNTI for transmission or reception of data over a wireless network, wherein the wireless network has a subcarrier spacing configuration of PRACH resources, wherein a size of the subcarrier spacing configuration of the PRACH resources causes out-of-range RA-RNTI values to be calculated using a legacy RA-RNTI equation in an unmodified form, wherein the range of permissible RA-RNTI values is from 0 to 216−1.

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