Codebook design for semi-persistent scheduling (SPS) transmissions

    公开(公告)号:US12225521B2

    公开(公告)日:2025-02-11

    申请号:US17441778

    申请日:2020-04-10

    Applicant: Apple Inc.

    Abstract: Systems, methods, and circuitries are provided for configuring HARQ feedback for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) communication. In one example, a method includes identifying a physical uplink control channel (PUCCH) resource in a first slot for communicating a hybrid automatic repeat request (HARQ) codebook. The method includes determining a set of SPS PDSCH receptions for which feedback is multiplexed in the HARQ codebook based on SPS PDSCH configurations for each component carrier and each slot, a UE capability for number of SPS PDSCH receptions per slot, and a prioritization protocol. The method includes selecting a codebook type based on whether a PDSCH is scheduled by way of a dynamic grant for any of the plurality of slots, constructing the HARQ codebook based on the set of SPS PDSCH receptions and the selected codebook type, and transmitting the HARQ codebook to a next generation node.

    Displays with privacy control
    356.
    发明授权

    公开(公告)号:US12223928B1

    公开(公告)日:2025-02-11

    申请号:US18234851

    申请日:2023-08-16

    Applicant: Apple Inc.

    Abstract: Privacy control can be provided for displays that output content for users within an enclosed space. Display systems can include sensors that detect an external illuminance of an external environment outside the enclosed space. Based on the external illuminance and the brightness output by the display, the display system can control one or more of a variety of operating parameters to enhance privacy for the user within the enclosed space. For example, the display can be controlled with a reduced brightness when the external illuminance is low. By further example, windows separating the enclosed space from the external environment can be provided with an ability to adjust a transmissivity thereof and thereby reduce transmission of light from the display to the external environment. By further example, the display can be operated to change or omit certain content that has a relatively high privacy threshold.

    Shaft with surface finished ridges
    358.
    发明授权

    公开(公告)号:US12222024B1

    公开(公告)日:2025-02-11

    申请号:US18612954

    申请日:2024-03-21

    Applicant: APPLE INC.

    Abstract: A ball screw spline actuator includes a shaft, a ball nut, and a ball spline. The shaft includes a helical groove and a spline groove intersecting the helical groove forming intersections having a least one ridge including a first surface finish formed by a first manufacturing operation. The ridge is subsequently reformed through a second manufacturing operation to include a second surface finish to reduce stress concentrations in the ridge from cyclical loading from at least one of the ball nut or the ball spline. In one example, the second manufacturing operation reforms the ridge to include a surface finished edge.

    Time Division Multiplexing Sounding Reference Signal Ports

    公开(公告)号:US20250048281A1

    公开(公告)日:2025-02-06

    申请号:US18365665

    申请日:2023-08-04

    Applicant: Apple Inc.

    Abstract: This disclosure relates to techniques for time division multiplexing sounding reference signal ports in a wireless communication system. A wireless device and a cellular base station may establish a wireless link. The wireless device may be configured to perform a sounding reference signal transmission with time division multiplexing sounding reference signal ports. A maximum transmit power for the wireless device for the sounding reference signal transmission may be determined based at least in part on the time division multiplexing sounding reference signal ports. A transmit power may be selected for the sounding reference signal transmission based at least in part on the maximum transmit power for the wireless device for the sounding reference signal transmission. The sounding reference signal transmission may be performed using the selected transmit power.

    RANDOM ACCESS IN LOWER-LAYER TRIGGERED MOBILITY PROCEDURE

    公开(公告)号:US20250048201A1

    公开(公告)日:2025-02-06

    申请号:US18793723

    申请日:2024-08-02

    Applicant: Apple Inc.

    Abstract: A method for performing a contention-free random access (CFRA) in a lower-layer triggered mobility (LTM) procedure from a serving cell to a target candidate cell is provided. The method includes determining, by a user equipment (UE), that random access response (RAR) reception is not configured for the UE. The method includes receiving, by the UE, a physical downlink control channel (PDCCH) order for transmitting a physical random access channel (PRACH) signal to the target candidate cell. The method includes determining, by the UE and based on the PDCCH order, a transmission power for transmitting the PRACH signal.

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