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.

    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.

    CSI-RS ENHANCEMENT FOR PORT SELECTION CODEBOOK WITH CHANNEL RECIPROCITY

    公开(公告)号:US20230361829A1

    公开(公告)日:2023-11-09

    申请号:US17442035

    申请日:2021-02-10

    Applicant: Apple Inc.

    CPC classification number: H04B7/0626 H04W76/20

    Abstract: The present disclosure relates to apparatus, methods, computer-readable storage medium and computer program product for CSI-RS enhancement for Port Selection Codebook with Channel Reciprocity. A cellular base station, comprising: at least one antenna; at least one radio coupled to the at least one antenna; and a processor coupled to the at least one radio; wherein the cellular base station is configured to: provide a Radio Resource Control (RRC) message to a wireless device; and provide a Channel State Information-Reference Signal (CSI-RS) to the wireless device via one or more ports based on the RRC message, wherein, the RRC message at least indicates one or more of: information on a density of the CSI-RS, information on time domain locations of the CSI-RS, information on a subset of ports for the wireless device to measure the CSI-RS, and information on a subset of Code Division Multiplexing (CDM) groups for the wireless device to measure the CSI-RS.

    METHODS, CONFIGURATION, AND SIGNALING FOR UPLINK TRANSMISSION SWITCHING

    公开(公告)号:US20230354358A1

    公开(公告)日:2023-11-02

    申请号:US18114098

    申请日:2023-02-24

    Applicant: Apple Inc.

    CPC classification number: H04W72/231 H04W72/1268

    Abstract: Some embodiments are disclosed for Uplink (UL) Transmission (Tx) switching in a wireless network. Some embodiments a base station (BS) can receive first UL Txs, transmit, a dynamic trigger signal for UL Tx switching, where a number of configured UL Tx switching bands, M, is greater than a maximum number of UL Tx chains, N, where M and N are integers. The BS can receive second UL Txs according to the dynamic trigger signal. In some examples, the first UL Txs and the second UL Txs correspond to a first pair of bands of the M configured UL Tx switching bands, or the first UL Txs correspond to a first pair of bands of the M configured UL Tx switching bands, and the second UL Txs correspond to one band of the first pair of bands and a different band of the M configured UL Tx switching bands.

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