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    TIMING ADVANCE VALIDATION ENHANCEMENTS IN CONFIGURED GRANT SMALL DATA TRANSMISSIONS
    663.
    发明申请
    TIMING ADVANCE VALIDATION ENHANCEMENTS IN CONFIGURED GRANT SMALL DATA TRANSMISSIONS 有权

    公开(公告)号：US20250142504A1

    公开(公告)日：2025-05-01

    申请号：US18837318

    申请日：2022-02-11

    Applicant: APPLE INC.

    Inventor： Jie Cui ,  Manasa Raghavan ,  Dawei Zhang ,  Yang Tang ,  Chunhai Yao ,  Qiming Li ,  Xiang Chen ,  Hong He ,  Yushu Zhang ,  Fangli Xu

    IPC: H04W56/00 ,  H04B17/318 ,  H04W76/28

    Abstract: Systems and methods for performing timing advance (TA) validation at a user equipment (UE) for a TA to be used when transmitting a configured grant small data transmission (CG-SDT). Mechanisms for bounding one or more measurement windows during which one or more synchronization signal blocks are measured during a reference signal received power (RSRP) measurement method of the TA validation are discussed, and may be set using information corresponding to timing drift due to relativistic effects, clock differences between a UE and a base station, and/or information about a UE discontinuous reception (DRX) cycle. Further, time interval limitations between various events attendant to such an RSRP measurement method are discussed as being determined using information corresponding to timing drift due to relativistic effects, clock differences between a UE and a base station, information about a DRX cycle used at the UE, and/or a maximum TA timer duration.

    Enhanced dynamic spectrum sharing (DSS) in cell groups
    667.
    发明授权
    Enhanced dynamic spectrum sharing (DSS) in cell groups 有权

    公开(公告)号：US12273898B2

    公开(公告)日：2025-04-08

    申请号：US17765478

    申请日：2021-04-05

    Applicant: Apple Inc.

    Inventor： Haitong Sun ,  Dawei Zhang ,  Wei Zeng ,  Yushu Zhang ,  Hong He ,  Chunxuan Ye ,  Huaning Niu ,  Jie Cui ,  Wei Zhang

    IPC: H04W72/232 ,  H04W72/12

    Abstract: Techniques described herein may include a special scheduling cell (sSCell) provided for dynamic spectrum sharing (DSS). The sSCell may schedule a primary cell of a master cell group (MCG) or a primary cell of a secondary cell group (SCG). The primary cell may be referred to as a special cell or SpCell. The sSCell may be activated and/or deactivated, enter in or exit from a state of dormancy, and radio link monitoring (RLM), beam failure recovery (BFR), and cell grouping parameters may be provided. Techniques described herein include configuring a UE-specific search space (USS) with non-fallback downlink control information (DCI), USS with fallback DCI, and overall search space for DSS enhancement.

    Transmission of nominal repetitions of data over an unlicensed spectrum
    669.
    发明授权
    Transmission of nominal repetitions of data over an unlicensed spectrum 有权

    公开(公告)号：US12256369B2

    公开(公告)日：2025-03-18

    申请号：US17441636

    申请日：2020-08-05

    Applicant: Apple Inc.

    Inventor： Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Hong He ,  Oghenekome Oteri ,  Sigen Ye ,  Wei Zeng ,  Weidong Yang ,  Yushu Zhang

    IPC: H04W72/0446 ,  H04L1/08 ,  H04L5/14 ,  H04W16/14

    Abstract: Some aspects of this disclosure relate to apparatuses and methods for implementing transmission of nominal repetitions of data over an unlicensed spectrum. One or more nominal repetitions of data are to be transmitted by a user equipment (UE) over an unlicensed spectrum used for both uplink and downlink transmissions. The one or more nominal repetitions of the data are segmented into multiple actual repetitions of portions of the data. The UE identifies an orphan symbol in an actual repetition of the multiple actual repetitions of portions of the data, and determines a filler symbol to replace the orphan symbol in the actual repetition. In addition, the UE transmits the multiple actual repetitions including the filler symbol in replacement of the orphan symbol to a base station over the unlicensed spectrum.

    System and method for fast beam tracking in a high frequency wireless communication system
    670.
    发明授权
    System and method for fast beam tracking in a high frequency wireless communication system 有权

    公开(公告)号：US12250668B2

    公开(公告)日：2025-03-11

    申请号：US17442519

    申请日：2020-10-16

    Applicant: Apple Inc.

    Inventor： Oghenekome Oteri ,  Wei Zeng ,  Yushu Zhang ,  Weidong Yang ,  Dawei Zhang ,  Chunxuan Ye ,  Hong He ,  Haitong Sun

    IPC: H04W72/232 ,  H04W72/044 ,  H04W72/23 ,  H04W72/51 ,  H04W72/54

    Abstract: Methods and apparatuses are disclosed for performing fast beam switching in a high-frequency wireless communication environment. Higher frequencies reduce transmission wavelength, which allows for an increased number of antennas and an increased number of beams. Therefore, beams become narrower and are more prone to failure. The UE must be capable of quickly identifying the beam failure and switching to a new beam. Therefore, the UE is capable of receiving multiple beams from the base station and configures both for testing and immediate use. In some cases, the UE can receive multiple beams for testing and assumes a default beam while feeding back to the base station a preferred beam. To support the larger number of available beams, MAC-CE and DCI are modified to identify this increased number of states. Alternatively, two MAC-CEs are sent, each containing a different group of states, and the DCI identifies both the group and the selected state.

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