Uplink Transmission Support for Reduced Capability Devices in Wireless Communications

    公开(公告)号:US20230269712A1

    公开(公告)日:2023-08-24

    申请号:US17441908

    申请日:2021-04-27

    Applicant: APPLE INC.

    CPC classification number: H04W72/0453 H04B1/7136

    Abstract: A reduced capacity (redcap) device may perform initial uplink communications, including transmitting a redcap physical uplink control channel (R-PUCCH), over an initial uplink bandwidth part (BWP) shared with a second device, the initial uplink BWP having a bandwidth (BW) larger than a maximum BW supported by the redcap device and smaller than or equal to a maximum BW supported by the second device. Frequency hopping operation for the redcap device may be supported for the R-PUCCH transmission through frequency division multiplexing and/or time division multiplexing settings for the resources used for the R-PUCCH transmission, and for PUCCH transmission by the second device. Restrictions may be implemented to create a gap for redcap devices to perform RF retuning between a physical RACH transmission and a subsequent physical control channel (e.g. PDCCH) monitoring for random access reception when the frequency gap is larger than the maximum BW supported by the redcap device.

    Doppler Shift Estimate Reporting with Pre-Compensation

    公开(公告)号:US20230239010A1

    公开(公告)日:2023-07-27

    申请号:US17439438

    申请日:2021-05-07

    Applicant: Apple Inc.

    CPC classification number: H04B7/01 H04B17/364

    Abstract: A first cellular base station transmits a configuration message to a reporting device installed on a high-speed vehicle. The configuration message specifies one or more parameters of a Doppler measurement report. The reporting device performs one or more first Doppler measurements on the first base station and/or one or more second Doppler measurements on a second base station. The reporting device transmits the Doppler measurement report to the first and/or second base stations. The Doppler measurement report may be used by the first and/or second base stations to perform Doppler pre-compensation on transmissions to the reporting device.

    Network Signaling for Radio Resource Management Enhancement in High Speed Train (HST) Scenarios

    公开(公告)号:US20230189012A1

    公开(公告)日:2023-06-15

    申请号:US17437787

    申请日:2021-04-01

    Applicant: Apple Inc.

    CPC classification number: H04W16/18 H04W4/44

    Abstract: A network may transmit either beam deployment information or beam number information to a user equipment (UE) carried on a train and configured for operation in the millimeter wave band. The deployment information may include deployment related distance parameters or azimuth angle spread parameters. The beam number information may indicate a number of network beams associated with a current cell. The UE may determine a number of UE receive beams based on deployment information or the network-indicated number of network beams. The UE may transmit feedback to the network, indicating the number of UE receive beams. Alternatively, the network may send a configuration message indicating a first number of UE receive beams to the UE, which the UE may treat as an upper bound or lower bound in its determination of a desired number of UE receive beams. The UE may transmit the desired number to the network.

    Methods and arrangements for measurement gap configuration

    公开(公告)号:US11664951B2

    公开(公告)日:2023-05-30

    申请号:US16976873

    申请日:2018-08-10

    Applicant: Apple Inc.

    CPC classification number: H04L5/0057 H04W24/10

    Abstract: Logic may receive an initial communication from a user device, the initial communication comprising capabilities. Logic may determine, based on an indication of a capability to support new radio frequency layers from the capabilities for the user device, a measurement gap configuration for the new radio frequency layers and a measurement gap configuration for a channel state information reference signal. Logic may send a frame with a preamble to a physical layer comprising the measurement gap configuration. Logic may send an initial communication to a physical layer, wherein the initial communication comprises capabilities for a user device. Logic may decode downlink data with a measurement gap configuration. And logic may parse the measurement gap configuration to determine at least one measurement gap identification and at least one offset for the new radio frequency layers and a channel state information reference signal.

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