Systems and methods for network-side UL cancellation using interlaced frequency resource allocation

    公开(公告)号:US11943803B2

    公开(公告)日:2024-03-26

    申请号:US17593816

    申请日:2020-09-24

    Applicant: Apple Inc.

    CPC classification number: H04W72/566 H04W72/23

    Abstract: A method for wireless communication includes: scheduling, by a wireless station, a first uplink (UL) transmission from a wireless device; determining, by the wireless station, a need for a higher priority uplink transmission that uses resources overlapping with the first UL transmission; determining, by the wireless station, a reference region, within which a UL cancellation indication (CI) is to be applied; determining, by the wireless station, a set of UL resources in the reference region for cancellation, wherein at least a subset of the UL resources in the reference region are interlaced; sending, via a downlink control channel, indication of the determined set of UL resources for cancellation (e.g., by indicating particular interlaces and/or particular Physical Resource Blocks within such interlaces that are to be canceled); and receiving, at the wireless station, the higher priority uplink transmission via at least a subset of the determined set of cancelled UL resources.

    SMTC2-LP based RRM enhancement
    294.
    发明授权

    公开(公告)号:US11930460B2

    公开(公告)日:2024-03-12

    申请号:US17593224

    申请日:2021-01-15

    Applicant: APPLE INC.

    CPC classification number: H04W56/001 H04W24/10

    Abstract: Provided is a method for a user equipment (UE), comprising performing, based on acquired information, in at least one of an idle mode and an inactive mode, at least one of an intra-frequency neighbor cell measurement and an inter-frequency neighbor cell measurement. The acquired information comprises at least one of a group of a periodicity of synchronization signal and physical broadcast channel block (SSB)-based measurement timing configuration (SMTC) and a periodicity of SMTC2-long periodicity (SMTC2-LP) and a physical cell identifier (PCI) list of SMTC2-LP.

    System and method for high speed doppler compensation in a cellular environment

    公开(公告)号:US11929950B2

    公开(公告)日:2024-03-12

    申请号:US17441962

    申请日:2020-08-05

    Applicant: Apple Inc.

    CPC classification number: H04L5/0048 H04B7/01 H04L5/0035

    Abstract: Methods and apparatuses are disclosed for calculating and compensating for Doppler shift in a high-speed environment. When in a high-speed environment, Doppler shifts on a transmitted radio frequency signal can become extremely large, which may make it difficult or even impossible for a receiving device to accurately decipher the signal. Therefore, embodiments of the present disclosure describe how tracking reference signals can be transmitted from multiple transmission/reception points, and processed by the UE. For example, the TRS transmitted from the TRP can be enhanced to allow for TRS information from two different TRPs. Additionally, or alternatively, a flag can be set within TRS information that identifies it as having originated from either a first TRP or a second TRP. Additionally, the UE can calculate Doppler shift information and report that information back to the base station in a report message, such as an SRS message. In this manner, the base station can precompensate for the Doppler shift.

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