Cellular Network Which Selectively Configures a Measurement Gap Based on Subcarrier Spacing

    公开(公告)号:US20230156542A1

    公开(公告)日:2023-05-18

    申请号:US17916918

    申请日:2020-04-16

    Applicant: Apple Inc.

    CPC classification number: H04W36/0088 H04L5/0096

    Abstract: A system for determining and reporting user equipment (UE) time gap requirement information for performing a measurement on a reference signal provided by a target base station. A UE receives a radio resource control (RRC) message from a current base station to modify a current RRC connection. The RRC configuration message may comprise sub carrier spacing (SCS) information of one or more target frequency bands of at least one target base station. The UE may then determine gap information based at least in part on the received SCS information of the one or more target frequency bands. The gap information may indicate whether a gap is needed in performing measurements on a reference signal transmitted at each of the one or more target frequency bands. The UE then transmits the gap information to the current base station.

    Sidelink Control Information Processing
    215.
    发明公开

    公开(公告)号:US20230144397A1

    公开(公告)日:2023-05-11

    申请号:US17053278

    申请日:2019-11-07

    Applicant: Apple Inc.

    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a vehicle-to-everything (V2X) capable wireless device configured to perform sidelink cellular communications. The wireless device performs sidelink communications using a two-stage sidelink control information (SCI) protocol including Stage 1 SCI messaging carried on a physical sidelink control channel (PSCCH), and Stage 2 SCI messaging carried on a physical sidelink shared channel (PSSCH). The SCI messaging may be encoded using polar codes. Channel interleaving is utilized on the SCI to interleave the SCI between two or more layers of a MIMO transmission system. Scrambling for Stage 2 SCI messaging is performed based on the result of a cyclic redundancy check (CRC) performed on Stage 1 SCI messaging. Collisions between sidelink HARQ feedback to be transmitted to a base station and other transmissions are avoided based on a priority analysis of the sidelink HARQ feedback.

    SYSTEMS AND METHODS FOR CONFIGURING TRANSMISSION POWER LEVEL BASED ON BODY PROXIMITY

    公开(公告)号:US20230132977A1

    公开(公告)日:2023-05-04

    申请号:US17747525

    申请日:2022-05-18

    Applicant: Apple Inc.

    Abstract: A first transmission power level based on a radio frequency exposure limit and a second transmission power level based on the first transmission power level and a probability of detection of a body by a body proximity sensor are determined, where it is ensured that an average usage of the first and second transmission power levels over time does not exceed the transmission power limit, determined based on radio frequency exposure limits. A transmission power gain is determined based on a difference between the first and second transmission power level based on the probability of detection, and a false alarm rate of the body by the body proximity sensor. The transmission power gain may be used as a performance indicator to select from multiple first and second transmission power gains. First and second transmission power gains corresponding to the selected transmission power gain may be stored and applied during transmission.

    CELL RESELECTION AND MEASUREMENT IN A HIGH-SPEED MODE IN WIRELESS COMMUNICATIONS

    公开(公告)号:US20230116740A1

    公开(公告)日:2023-04-13

    申请号:US17441689

    申请日:2021-01-13

    Applicant: Apple Inc.

    Abstract: The present application relates to devices and components including apparatus, systems, and methods to perform cell reselection. In an example, timing requirements for synchronization signal processing are defined based on a beam sweeping capability of the device. Synchronization signals are received and processed according to the timing requirements to complete a cell reselection procedure. In another example, location data of the device is used to look up a database of cell identifiers. A cell identifier is determined based on the look-up and a cell reselection procedure is performed using the cell identifier.

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