Method and apparatus for CSI enhancement for multi-TRP coherent joint transmission

    公开(公告)号:US12289145B2

    公开(公告)日:2025-04-29

    申请号:US18447388

    申请日:2023-08-10

    Applicant: APPLE INC.

    Abstract: Apparatus and methods are provided for CSI enhancement for multi-TRP coherent joint transmission. A user equipment (UE) receives signals from a plurality of transmission and reception points (TRPs). The UE determines, based on the signals, multiple TRP (multi-TRP) coherent joint transmission (CJT) channel state information (CSI) report information for a codebook based on a spatial basis selection matrix, a combination coefficient matrix, and a frequency basis selection matrix. The spatial basis selection matrix is layer common, polarization common, and TRP independent. The UE reports, to one or more of the plurality of TRPs, the multi-TRP CJT CSI report information.

    ENHANCING MULTIPLE CONFIGURED GRANT DESIGN FOR UPLINK AND SUPPLEMENTARY UPLINK

    公开(公告)号:US20250055642A1

    公开(公告)日:2025-02-13

    申请号:US18786973

    申请日:2024-07-29

    Applicant: Apple Inc.

    Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: obtaining a first configured grant (CG) configuration for an uplink (UL) carrier and a second CG configuration for a supplementary uplink (SUL) carrier, each of the first and second CG configurations comprising multiple transmission occasions, generating at least one unused transmission occasion uplink control information (UTO-UCI), the at least one UTO-UCI indicating which of the multiple transmission occasions are unused by a user equipment (UE) for each of the first CG configuration and the second CG configuration, and instructing radio frequency (RF) circuitry to transmit the at least one UTO-UCI to an access node.

    Sidelink Channel Occupancy Time Sharing

    公开(公告)号:US20240381395A1

    公开(公告)日:2024-11-14

    申请号:US18659155

    申请日:2024-05-09

    Applicant: Apple Inc.

    Abstract: Apparatuses, systems, and methods for sidelink unlicensed band (SL-U) cyclic prefix extension (CPE) starting position as well as identifier (ID) restrictions for channel time occupancy (COT) sharing, including systems, methods, mechanisms for COT sharing for PSFCH multi-channel transmission, CPE starting position determination in SL-U, ID restrictions for SL-U COT sharing, and determination of when to use Type 2A, Type 2B, and/or Type 2C in SL-U COT sharing, e.g., in 5G NR systems and beyond. A UE may initiate channel access in a SL-U via an NR downlink Type A or Type B multi-channel access procedure to perform multi-channel PSFCH transmissions. The UE may secure a COT and when the COT is initiated by PSFCH type 1 channel access, the COT may not be shared with other UEs, the COT may be shared with a corresponding UE, or the COT may be shared with UEs expecting feedback during the COT.

    CODEBOOK SUBSET DESIGN FOR UPLINK DATA TRANSMISSION

    公开(公告)号:US20240380451A1

    公开(公告)日:2024-11-14

    申请号:US18653371

    申请日:2024-05-02

    Applicant: Apple Inc.

    Abstract: A user equipment (UE), a base station, a baseband processor or other network device can determine a codebook subset configuration of a plurality of multiple-input multiple-output (MIMO) layers for antenna ports of a codebook. The codebook subset configuration can include a nested structure based on a codebook configured for a fully-coherent UE, or a codebook configured for a partially-coherent UE. Fully-coherent precoders, a set of partially-coherent precoders or a set of non-coherent precoders can be configured in the codebook subset configuration to reduce a number of precoders from the partially-coherent precoders or the non-coherent precoders.

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