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    NARROWBAND REFERENCE SIGNAL TRANSMISSION FOR MEASUREMENT AND SYNCHRONIZATION
    71.
    发明申请
    NARROWBAND REFERENCE SIGNAL TRANSMISSION FOR MEASUREMENT AND SYNCHRONIZATION 有权

    公开(公告)号：US20210306834A1

    公开(公告)日：2021-09-30

    申请号：US17264685

    申请日：2019-07-31

    Applicant: Apple Inc.

    Inventor： Wenting CHANG ,  Huaning NIU ,  Salvatore TALARICO ,  Qiaoyang YE ,  Rongrong SUN

    IPC: H04W4/80 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

    Abstract: Embodiments of the present disclosure provide for narrowband reference signals transmission. A base station is configured to: generate downlink transmissions for unlicensed Internet of things (U-IoT) communication, the downlink transmissions to include an anchor segment on a first plurality of subframes and a data segment on a second plurality of subframes, wherein the anchor segment includes a narrowband reference signal (NRS) configured to be transmitted at a first transmit power by the base station, to facilitate time or frequency tracking and cause transmission of the downlink frame for the U-IoT communication. And a user equipment is configured to receive the NRSs transmitted by the base station and process transmissions based on reception of the NRSs.

    FRAME STRUCTURE FOR UNLICENSED NARROWBAND INTERNET-OF-THINGS SYSTEM
    72.
    发明申请
    FRAME STRUCTURE FOR UNLICENSED NARROWBAND INTERNET-OF-THINGS SYSTEM 审中-公开

    公开(公告)号：US20200220673A1

    公开(公告)日：2020-07-09

    申请号：US16638028

    申请日：2018-08-10

    Applicant: APPLE INC.

    Inventor： Wenting CHANG ,  Huaning NIU ,  Qiaoyang YE ,  Salvatore TALARICO

    IPC: H04L5/00 ,  H04L5/14 ,  H04W4/70 ,  H04W16/14

    Abstract: The disclosure describes frame structure with downlink/uplink subframe configuration and channel hopping scheme for unlicensed narrowband Internet-of-Things (IoT) systems. An apparatus operable for unlicensed narrowband transmission to support IoT service is disclosed. The apparatus includes baseband circuitry to select a transmission channel within an unlicensed narrow band for downlink transmission of a discovery reference signal (DRS), and for channel hopping, to select, according to the DRS, a communication channel within the unlicensed narrow band for downlink data and uplink data. The DRS includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and physical broadcast channel (PBCH) content. The baseband circuitry is further to demodulate a received signal received via radio frequency (RF) circuitry through the communication channel over an uplink frame, and to modulate a transmitting signal to be transmitted via the RF circuitry through the communication channel over a downlink frame.

    FAST DIRECT SCELL ACTIVATION
    74.
    发明申请
    FAST DIRECT SCELL ACTIVATION 有权

    公开(公告)号：US20250081271A1

    公开(公告)日：2025-03-06

    申请号：US18726249

    申请日：2022-01-06

    Applicant: Apple Inc.

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

    IPC: H04W76/20 ,  H04L5/00 ,  H04W52/52 ,  H04W80/02

    Abstract: Systems, apparatus, methods, and computer programs for fast, direct SCell activation are disclosed. In one aspect, a method can include receiving, by a UE, an RRC command that causes the UE to be configured to detect a TRS transmission of a plurality of TRS transmission bursts broadcast by an access node, disregarding, by the UE, one or more TRS transmission of the plurality of TRS transmission bursts that are received, by the UE, during processing of the received RRC command, and after processing, by the UE, of the received RRC command, decoding a TRS transmission of the plurality of TRS bursts that is received subsequent to completion of processing of the received RRC command for automatic gain control (AGC).

    Channel Estimation Using Artificial Intelligence
    77.
    发明申请
    Channel Estimation Using Artificial Intelligence 有权

    公开(公告)号：US20240406036A1

    公开(公告)日：2024-12-05

    申请号：US17756852

    申请日：2021-06-07

    Applicant: Apple Inc.

    Inventor： Seyed Ali Akbar FAKOORIAN ,  Dawei ZHANG ,  Haitong SUN ,  Huaning NIU ,  Oghenekome OTERI ,  Sigen YE ,  Wei ZENG ,  Weidong YANG ,  Yushu ZHANG

    IPC: H04L25/02 ,  H04L5/00

    Abstract: A user equipment (UE) is configured to perform channel estimation. The UE operates in a current channel estimation mode comprising either one of a first mode or a second mode, wherein the first mode comprises receiving first reference signals (RS) having a first RS overhead and wherein the second mode comprises receiving second reference signals (RS) having a second RS overhead, receives a network indication to switch from the current channel estimation mode to a new channel estimation mode comprising the other one of the first mode or second mode, transmits an acknowledgment to the network that the network indication was received and switches from the current channel estimation mode to the new channel estimation mode in accordance with the network indication.

    Scheduling of Control Signaling on a Primary Cell by a Secondary Cell
    78.
    发明申请
    Scheduling of Control Signaling on a Primary Cell by a Secondary Cell 有权

    公开(公告)号：US20240381374A1

    公开(公告)日：2024-11-14

    申请号：US18780925

    申请日：2024-07-23

    Applicant: Apple Inc.

    Inventor： Haitong SUN ,  Chunxuan YE ,  Dawei ZHANG ,  Hong HE ,  Huaning NIU ,  Seyed Ali Akbar FAKOORIAN ,  Wei ZENG ,  Yushu ZHANG

    IPC: H04W72/232 ,  H04L5/00 ,  H04W72/1263

    Abstract: A base station of a network configures a first search space having a first search space identification (SearchSpaceId) in a special cell (SpCell) and a second search space having a second search space identification (SearchSpaceId) in a secondary cell (SCell) for monitoring control signaling that schedules operations on the SpCell. The base station transmits a radio resource control (RRC) configuration to a user equipment (UE) including the first SSID and the second SSID, wherein the RRC configuration configures the UE to monitor the first search space having the first SSID for scheduling of a first type of control signaling and the second search space having the second SSID for scheduling of a second type of control signaling.

    Half Duplex Frequency Division Duplex Collision Handling
    80.
    发明公开
    Half Duplex Frequency Division Duplex Collision Handling 审中-公开

    公开(公告)号：US20240297776A1

    公开(公告)日：2024-09-05

    申请号：US17759870

    申请日：2021-08-05

    Applicant: Apple Inc.

    Inventor： Hong HE ,  Chunxuan YE ,  Dawei ZHANG ,  Haitong SUN ,  Huaning NIU ,  Seyed Ali Akbar FAKOORIAN ,  Sigen YE ,  Wei ZENG ,  Weidong YANG ,  Yushu ZHANG

    IPC: H04L5/16 ,  H04W74/0838

    CPC classification number: H04L5/16 ,  H04W74/0838

    Abstract: A user equipment (UE) is configured to determine that half-duplex frequency division duplex (HD-FDD) is enabled by a network with which the UE is communicating, identify a collision between a cell-specific downlink reception and a cell-specific uplink transmission and implement a HD-FDD collision handling technique. A UE may also be configured to determine that half-duplex frequency division duplex (HD-FDD) is enabled by a network with which the UE is communicating, perform a first cell-specific uplink transmission at a first time and perform a first cell-specific downlink reception at a second time, wherein a guard period represents a time duration between the first time and the second time during which the UE is not to perform a second different cell-specific uplink transmission or a second different cell-specific downlink reception.

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