UPLINK TRANSMISSION IN A NON-TERRESTRIAL WIRELESS NETWORK (NTN)

    公开(公告)号:US20240031009A1

    公开(公告)日:2024-01-25

    申请号:US17441251

    申请日:2021-08-30

    Applicant: Apple Inc.

    CPC classification number: H04B7/18513

    Abstract: Mechanisms are provided for a user equipment (UE) to determine a transmission frequency or a time advance for an uplink transmission from the UE to a base station in a non-terrestrial wireless network (NTN) without global navigation satellite systems (GNSS) information available to the UE. A communication connection between the UE and a base station can be established. The UE can determine that GNSS information is not available, and report to the base station that the GNSS information is not available. The UE can receive, from the base station, an indication of one or more parameters for an uplink transmission from the UE to synchronize the uplink transmission. The UE can determine, based on a current transmission frequency and the received indication of the one or more parameters, a next transmission frequency and transmit the uplink transmission at the determined next transmission frequency.

    PORT SELECTION CODEBOOK ENHANCEMENT
    323.
    发明公开

    公开(公告)号:US20240030971A1

    公开(公告)日:2024-01-25

    申请号:US18476560

    申请日:2023-09-28

    Applicant: APPLE INC.

    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 indicates up to L CSI reference signal (CSI-RS) ports for selection by the UE out of P CSI-RS ports configured for measuring and reporting CSI. The UE determines selected CSI-RS ports out of the P CSI-RS ports. The selected CSI-RS ports include the L CSI-RS ports or less. The UE generates a port selection matrix W1 corresponding to the selected CSI-RS ports. The UE also generates an indication of the port selection matrix W1 to the base station. The CSI-ReportConfig may further configure the UE to select a subset of frequency basis. The UE determines a selected subset of frequency basis and generates a frequency basis selection matrix Wf corresponding to the selected subset of frequency basis.

    Timing-Related Considerations for Network-Controlled Repeaters

    公开(公告)号:US20240014959A1

    公开(公告)日:2024-01-11

    申请号:US17810909

    申请日:2022-07-06

    Applicant: Apple Inc.

    CPC classification number: H04L5/0048 H04L5/0073 H04W72/0446 H04W72/046

    Abstract: A repeater configured to receive, on a side control channel from a component of a network, side control information including parameters at least for determining time domain resources on which to apply an indicated beam for uplink (UL) transmission reception or downlink (DL) transmission forwarding with a user equipment (UE) on an access link, determine, from the received parameters, whether to apply the indicated beam to a transmission (Tx) spatial filter, a reception (Rx) spatial filter, or both the Tx and Rx spatial filters and apply the indicated beam to the determined Tx spatial filter, Rx spatial filter, or both the Tx and Rx spatial filters for the determined time domain resources when forwarding the DL transmission to the UE or receiving the UL transmission from the UE for forwarding to the network.

    METHOD FOR ENHANCED DIRECT SECONDARY CELL ACTIVATION

    公开(公告)号:US20230396396A1

    公开(公告)日:2023-12-07

    申请号:US17441600

    申请日:2021-01-14

    Applicant: Apple Inc.

    CPC classification number: H04L5/0091 H04L5/0051 H04W72/20

    Abstract: Some embodiments include an apparatus, method, and computer program product for enhanced direct secondary cell activation in a 5G wireless communications system. A user equipment (UE) can receive a Radio Resource Control (RRC) command from a 5G Node B (gNB) via a Primary Cell (PCell) or via a Primary Secondary Cell (PSCell) that includes configuration data for a Secondary Cell (SCell), where the SCell operates in Frequency Range 2 (FR2). The RRC command includes a first Transmission Configuration Indicator (TCI) state for the SCell, and the UE can activate the SCell for the UE based at least on the configuration data, concurrently with the first TCI state for receiving the PDCCH transmission. The UE can receive a Physical Downlink Control Channel (PDCCH) transmission via a first antenna beam from the SCell, where the first antenna beam is based on the first TCI state.

    HARQ PROCESS HANDLING FOR MULTI-DCI MULTI-TRP OPERATION

    公开(公告)号:US20230362929A1

    公开(公告)日:2023-11-09

    申请号:US17441593

    申请日:2021-01-15

    Applicant: Apple Inc.

    CPC classification number: H04W72/1273 H04L1/1812 H04W72/232

    Abstract: Apparatuses, systems, and methods for providing downlink control for multi-TRP transmission. A network-side device may provide a downlink control information transmission to a wireless device scheduling downlink transmission to the wireless device from multiple transmission reception points. The downlink transmission may relate to Hybrid automatic repeat request process and/or system information transmission. And the downlink control information may include information about scheduling of HARQ processes from different TRPs, and/or information about scheduling of SI transmission from different TRPs. The wireless device may receive the downlink transmissions from the plurality of transmission reception points in accordance with the downlink control information.

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