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    METHOD FOR TRACKING REFERENCE SIGNAL (TRS) ENHANCEMENT
    392.
    发明申请
    METHOD FOR TRACKING REFERENCE SIGNAL (TRS) ENHANCEMENT 有权

    公开(公告)号：US20250023685A1

    公开(公告)日：2025-01-16

    申请号：US18902231

    申请日：2024-09-30

    Applicant: Apple Inc.

    Inventor： Yushu ZHANG ,  Dawei ZHANG ,  Haitong SUN ,  Wei ZENG ,  Weidong YANG

    IPC: H04L5/00 ,  H04L1/1867

    Abstract: Some embodiments include an apparatus, method, and computer program product for tracking reference signal (TRS) support of high speed use cases of 5G communications in a single frequency network (SFN), where a user equipment (UE) can measure a Doppler offset of a combined signal from two or more transmission reception points (TRPs) of the 5G communications system. A 5G node B (gNB) node can transmit a periodic, semi-persistent (SP), or aperiodic TRS with high measurement density that the UE uses to measure a Doppler offset of a combined signal. For example, the gNB can: trigger the aperiodic TRS based on a downlink assignment; and/or use lower layer signaling to arrange to transmit a semi-persistent TRS or a periodic TRS with a reduced periodicity. In some embodiments, the gNB can measure the Doppler offset based on an uplink signal, and transmit a TRS based on a pre-compensated Doppler frequency.

    Designs for Multi-DCI Based Multi-TRP Operation
    393.
    发明申请
    Designs for Multi-DCI Based Multi-TRP Operation 有权

    公开(公告)号：US20240405934A1

    公开(公告)日：2024-12-05

    申请号：US18799276

    申请日：2024-08-09

    Applicant: Apple Inc.

    Inventor： Haitong SUN ,  Chunhai YAO ,  Chunxuan YE ,  Dawei ZHANG ,  Hong HE ,  Oghenekome OTERI ,  Wei ZENG ,  Weidong YANG ,  Yushu ZHANG

    IPC: H04L5/00 ,  H04L1/1812 ,  H04W72/23

    Abstract: Various user equipment (UE) operations performed when the UE is in multiple Downlink Control Information (multi-DCI) based multiple transmission and reception point (multi-TRP) configuration. The operations receiving, from one of the first or second gNBs, one or more cell reference signal (CRS) rate matching patterns, wherein the one or more CRS rate matching patterns comprise an indication of a control resource set (CORESET) pool for each of the one or more CRS rate matching patterns and applying the one or more CRS rate matching patterns to a CORESET for a Physical Downlink Shared Channel (PDSCH) based on the indication of the CORESET pool.

    METHOD FOR ENHANCED DIRECT SECONDARY CELL ACTIVATION
    394.
    发明申请
    METHOD FOR ENHANCED DIRECT SECONDARY CELL ACTIVATION 有权

    公开(公告)号：US20240380562A1

    公开(公告)日：2024-11-14

    申请号：US18782665

    申请日：2024-07-24

    Applicant: Apple Inc

    Inventor： Qiming LI ,  Jie CUI ,  Dawei ZHANG ,  Yang TANG ,  Yushu ZHANG ,  Fangil XU ,  Manasa RAGHAVAN ,  Huaning NIU ,  Xiang CHEN

    IPC: H04L5/00 ,  H04W72/20

    Abstract: Some embodiments include an apparatus, method, and computer program product for enhanced direct secondary cell activation in a 5G wireless communications system. A user equipment (UE) can receive a Radio Resource Control (RRC) command from a 5G Node B (gNB) via a Primary Cell (PCell) or via a Primary Secondary Cell (PSCell) that includes configuration data for a Secondary Cell (SCell), where the SCell operates in Frequency Range 2 (FR2). The RRC command includes a first Transmission Configuration Indicator (TCI) state for the SCell, and the UE can activate the SCell for the UE based at least on the configuration data, concurrently with the first TCI state for receiving the PDCCH transmission. The UE can receive a Physical Downlink Control Channel (PDCCH) transmission via a first antenna beam from the SCell, where the first antenna beam is based on the first TCI state.

    METHOD FOR PDCCH BUFFER MANAGEMENT
    396.
    发明公开
    METHOD FOR PDCCH BUFFER MANAGEMENT 审中-公开

    公开(公告)号：US20240356705A1

    公开(公告)日：2024-10-24

    申请号：US17913773

    申请日：2021-09-24

    Applicant: Apple Inc.

    Inventor： Yushu ZHANG ,  Haitong SUN ,  Wei ZENG ,  Hong HE ,  Chunhai YAO ,  Chunxuan YE ,  Seyed Ali Akbar FAKOORIAN ,  Sigen YE ,  Dawei ZHANG

    IPC: H04L5/00 ,  H04W72/23

    CPC classification number: H04L5/0053 ,  H04W72/23

    Abstract: Approaches are described that enhance the reliability of physical downlink control channel (PDCCH) detection where the PDCCH can be transmitted repeatedly with different beams. The approaches use soft combining where the user equipment (UE) combines the soft bits from each repetition, with the combined soft bits used to jointly decode the PDCCH repetitions. To support the soft combining, the UE needs to buffer the soft bits. Buffering approaches include determining what contributes towards the buffering, including scenarios where one of the linked search sets (SSs) is dropped, what is contributed in a linked SS set pair, how the duration of buffer counting is determined, and how the UE reports its maximum buffer size capability. In scenarios where the required buffer size exceeds the UE maximum buffer size, a priority rule may be used in the PDCCH decoding using the SS sets pair, where the priority is based on the SS type, the serving cell index, the SS set ID and/or the control channel resource set (CORESET) ID.

    Handling Multi-TRP Transmissions
    397.
    发明公开
    Handling Multi-TRP Transmissions 审中-公开

    公开(公告)号：US20240348385A1

    公开(公告)日：2024-10-17

    申请号：US18748435

    申请日：2024-06-20

    Applicant: Apple Inc.

    Inventor： Haitong SUN ,  Chunhai YAO ,  Chunxuan YE ,  Dawei ZHANG ,  Hong HE ,  Oghenekome OTERI ,  Sigen YE ,  Wei ZENG ,  Weidong YANG ,  Yushu ZHANG

    IPC: H04L5/00 ,  H04W72/23

    CPC classification number: H04L5/0035 ,  H04L5/0048 ,  H04W72/23

    Abstract: A user equipment (UE) is configured with multi-transmission and reception point (multi-TRP) operation. The UE groups capabilities of handling two overlapping physical downlink shared channel (PDSCH) transmissions into a plurality of groups, determining a UE capability of handling two overlapping PDSCH transmissions based on the plurality of groups and transmits the UE capability to a next generation nodeB (gNB) of a 5G new radio (NR) wireless network. The UE also determines if a demodulation reference signal (DMRS) of a physical downlink shared channel (PDSCH) transmission collides with a cell-specific reference signal (CRS) of a long term evolution (LTE) transmission and determines if the CRS originated from a same multi-transmission/reception point (TRP) as the DMRS.

    METHOD FOR LOW LAYER INTER-CELL MOBILITY MANAGEMENT
    398.
    发明公开
    METHOD FOR LOW LAYER INTER-CELL MOBILITY MANAGEMENT 审中-公开

    公开(公告)号：US20240340711A1

    公开(公告)日：2024-10-10

    申请号：US18748297

    申请日：2024-06-20

    Applicant: Apple Inc.

    Inventor： Yushu ZHANG ,  Dawei ZHANG ,  Haitong SUN ,  Jie CUI ,  Wei ZENG

    IPC: H04W36/00 ,  H04W72/21

    CPC classification number: H04W36/0011 ,  H04W36/0058 ,  H04W72/21

    Abstract: Some embodiments include an apparatus, method, and computer program product for using low layer protocols for inter-cell mobility management in a 5G wireless communications system. A serving 5G node B (gNB) can configure reports that a user equipment (UE) transmits to the serving gNB to make handover decisions. The serving gNB can configure a group of Transmission Configuration Indication (TCI) states (e.g., a group of beams) that correspond a physical cell, and the report includes layer 3 measurements corresponding to a neighboring or serving cell's TCI state. The report can be conveyed using lower layer protocols. The report can include layer 1 measurements conveyed using a layer 1 protocol and the serving gNB can perform filtering to generate corresponding layer 3 measurement results. Based on the reports, the serving gNB can perform a handover and synchronization using lower layer protocols, from one TCI state to another.

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