METHODS AND APPARATUS FOR CONFIGURING W1, W2, AND WF FOR PORT SELECTION CODEBOOK ENHANCEMENT

    公开(公告)号:US20240022936A1

    公开(公告)日:2024-01-18

    申请号:US18476711

    申请日:2023-09-28

    Applicant: APPLE INC.

    CPC classification number: H04W24/08 H04L5/0048

    Abstract: Apparatus and methods are provided for port selection codebook configuration. A user equipment (UE) may decode a channel state information (CSI) report configuration (CSI-ReportConfig) from a base station. The CSI-ReportConfig configuring a port selection codebook comprising a port selection matrix W1, a combinational coefficient matrix W2, and a frequency basis selection matrix Wf. Based on the CSI-ReportConfig, the determines, for the port selection matrix W1, up to L CSI reference signal (CSI-RS) ports out of P CSI-RS ports configured for measuring and reporting CSI. For the frequency basis selection matrix Wf, the UE determines up to Mv frequency basis out of N frequency basis. For the combinational coefficient matrix W2, the UE determines up to L*Mv entries per layer. The UE reports one or more of the port selection matrix W1, the combinational coefficient matrix W2, and the frequency basis selection matrix Wf to the base station.

    TRANSMISSION CONFIGURATION INDICATION (TCI) STATE AND BEAM SWITCHING

    公开(公告)号:US20240022305A1

    公开(公告)日:2024-01-18

    申请号:US18475468

    申请日:2023-09-27

    Applicant: Apple Inc.

    CPC classification number: H04B7/063

    Abstract: Techniques for changing a Transmission Configuration Indication (TCI) state by a user equipment (UE) operating in a wireless communications system are provided. The UE receives a first message including a TCI state change command from a network and determines, based on the first message, whether a time offset/frequency offset (TO/FO) and a reception (Rx) beam for a new TCI state are known by the UE. Based on the determination, the UE calculates a time delay of the UE to be prepared to receive a reference signal with the new TCI state, generates a second message indicating the time delay of the UE for the new TCI state, and transmits the second message to the network.

    TRP-Specific PUSCH Transmissions for Multi-TRP Operation

    公开(公告)号:US20230422245A1

    公开(公告)日:2023-12-28

    申请号:US18464437

    申请日:2023-09-11

    Applicant: Apple Inc.

    CPC classification number: H04W72/1268 H04W72/232

    Abstract: A user equipment (UE) is configured to communicate with one or more transmission and reception points (TRPs). The UE receives a sounding reference signal (SRS) resource set configuration including a first resource set corresponding to a first transmission and reception point (TRP) and a second resource set corresponding to a second TRP, receives a downlink control information (DCI) transmission including an SRS resource indicator (SRI) indicating (i) which resource from the first resource set should be selected for a first physical uplink shared channel (PUSCH) transmission to a first TRP, and (ii) which resource from the second resource set should be selected for a second PUSCH transmission to a second TRP and transmits the first PUSCH transmission to the first TRP and the second PUSCH transmission to the second TRP.

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