Methods and apparatus for sub-band-based PDCCH hopping in wireless communication

    公开(公告)号:US12193012B2

    公开(公告)日:2025-01-07

    申请号:US17441948

    申请日:2020-05-14

    Applicant: Apple Inc.

    Abstract: An approach for wireless communications to support reduced capability New Radio (NR) with larger available control resource sets (CORESET) bandwidths. Examples include a frequency-hopping CORESET with a predefined hopping pattern configured by higher layers, such as RRC signaling or MAC Control Element (CE) on a per CORESET per UE or purely per UE basis. Frequency hopping patterns for CORESET transmissions include the use of PRBs for CORESETs that are mirrored with respect to the central frequency of active bandwidth part (BWP), and the use of a random parameter to step through the frequency pattern. The sub-band location of the physical downlink shared channel that is scheduled by the physical downlink control channel may be indicated using the DCI format, or may be based on a last slot for PDCCH transmission.

    Mitigation of listen before talk conflicts in the unlicensed spectrum

    公开(公告)号:US12177897B2

    公开(公告)日:2024-12-24

    申请号:US17437768

    申请日:2021-03-31

    Applicant: Apple Inc.

    Abstract: Apparatuses, systems, and methods for mitigation of listen before talk conflicts in the unlicensed spectrum. A wireless device may receive one or more synchronization signal blocks (SSBs) from a base station (BS) as part of a measurement procedure with listen before talk (LBT). The wireless device may determine one or more LBT failures associated with one or more receive beams of the wireless device. Furthermore, in response to determining the one or more LBT failures associated with the one or more receive beams of the wireless device, the wireless device may extend a measurement period for the one or more receive beams of the wireless device. The wireless device may then receive one or more additional SSBs on the one or more receive beams of the wireless device.

    Connectivity enhancement
    125.
    发明授权

    公开(公告)号:US12167499B2

    公开(公告)日:2024-12-10

    申请号:US17289637

    申请日:2019-10-28

    Applicant: Apple Inc.

    Abstract: Methods, systems, and storage media described herein may have the complexity to support simultaneous communications (e.g., transmission/reception to/from) with two or more cells. Therefore, before configuring a handover, the network needs to know if these methods, systems, and storage media can support simultaneous communication with multiple cells or not. Among other things, these methods, systems, and storage media can reduce the interruption time during handovers for when these methods, systems, and storage media are capable of such simultaneous communication.

    PRIORITIZATION MECHANISM FOR SRS ANTENNA PORT SWITCHING

    公开(公告)号:US20240405827A1

    公开(公告)日:2024-12-05

    申请号:US18697335

    申请日:2021-10-08

    Applicant: APPLE INC.

    Abstract: Systems and methods for networks having user equipment (UE) that can perform measurement/reporting of received signals and a sounding reference signal (SRS) transmission that is part of an SRS antenna port switching procedure are described herein. In some circumstances, the measurement and the SRS antenna port switching procedure overlap on one or more symbols. Across various embodiments, the UE prioritizes one of the measurement and the SRS antenna port switching procedure based on one or more of a scheduling type (periodic, semi-persistent, aperiodic) of the measurement, a scheduling type of a channel state information (CSI) report for a measurement result for the measurement, and/or a scheduling type of the SRS transmission of the SRS antenna port switching procedure. Networks that avoid overlaps by scheduling SRS transmissions away from UE signal measurements, or transmissions of signals to be measured away from UE SRS antenna port switching procedures, are also described.

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