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    SYSTEM AND METHOD FOR UE TRIGGERED CSI-RS
    21.
    发明申请
    SYSTEM AND METHOD FOR UE TRIGGERED CSI-RS 有权

    公开(公告)号：US20220131676A1

    公开(公告)日：2022-04-28

    申请号：US17429973

    申请日：2020-02-14

    Applicant: Apple Inc.

    Inventor： Yushu ZHANG ,  Gang XIONG ,  Guotong WANG ,  Alexei DAVYDOV

    IPC: H04L5/00

    Abstract: Disclosed are systems, methods, and one or more computer-readable media (CRM) storing instructions for the triggering of a channel state information reference signal (CSI-RS) by user equipment (UE) in a wireless cellular network. The UE measures a downlink reference signal. The UE also determines a condition for triggering a channel state information reference signal (CSI-RS) is satisfied based on the downlink reference signal. Then, the UE transmits a request for a base station of the wireless cellular network to provide the CSI-RS to the UE based on the condition being satisfied.

    CONTENTION WINDOW SIZE ADJUSTMENT FOR RETRANSMISSION OPERATIONS
    22.
    发明申请
    CONTENTION WINDOW SIZE ADJUSTMENT FOR RETRANSMISSION OPERATIONS 有权

    公开(公告)号：US20220109532A1

    公开(公告)日：2022-04-07

    申请号：US17429871

    申请日：2020-02-11

    Applicant: Apple Inc.

    Inventor： Salvatore TALARICO ,  Gang XIONG ,  Yingyang LI ,  Carlos H. ALDANA

    IPC: H04L1/18 ,  H04L27/00 ,  H04L5/00 ,  H04W74/08

    Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for facilitating retransmission procedures in New Radio (NR) technologies. Some embodiments are directed to a method that includes determining a contention window size (CWS) of an uplink/downlink (UL/DL) communication channel in a new radio unlicensed (NR-U) spectrum. The method also includes adjusting the CWS based on: defining a reference UL/DL burst set at a predetermined time length independent from a subcarrier spacing and partially spanning an UL/DL burst, and counting one or more code block groups (CBGs) in the reference UL/DL burst. The method further includes scheduling a retransmission of an UL/DL communication in the NR-U spectrum based on the adjusted CWS.

    FALLBACK PROCEDURE FOR 2-STEP RACH
    23.
    发明申请
    FALLBACK PROCEDURE FOR 2-STEP RACH 有权

    公开(公告)号：US20220095379A1

    公开(公告)日：2022-03-24

    申请号：US17420185

    申请日：2020-01-10

    Applicant: Apple Inc.

    Inventor： Gang XIONG ,  Yushu ZHANG ,  Yongjun KWAK ,  Sergey SOSNIN ,  Hwan-Joon KWON

    IPC: H04W74/08

    Abstract: Some embodiments of this disclosure include apparatuses and methods for a fallback procedure for a 2-step random access channel (RACH) procedure for data transmission in a wireless communication system where the apparatuses and methods include at least generating, by a user equipment (UE), a first signal that includes a first message (MsgA) for a 2-step random access channel (RACH) procedure, transmitting, by the UE, the first signal to a next generation NodeB (gNB), determining, by the UE, whether a 4-step RACH procedure is to be used to further transmit the first signal including the MsgA, and further transmitting, by the UE, the first signal to the gNB using the 4 step RACH procedure based on determining that the 4-step RACH procedure should be used.

    PHYSICAL DOWNLINK CONTROL CHANNEL DESIGN FOR DFT-S-OFDM WAVEFORM
    24.
    发明申请
    PHYSICAL DOWNLINK CONTROL CHANNEL DESIGN FOR DFT-S-OFDM WAVEFORM 有权

    公开(公告)号：US20220085940A1

    公开(公告)日：2022-03-17

    申请号：US17423284

    申请日：2020-01-22

    Applicant: Apple Inc.

    Inventor： Gang XIONG ,  Alexei Davydov ,  Yushu Zhang ,  Hong He ,  Daewon Lee ,  Jie Zhu

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

    Abstract: Some embodiments of this disclosure include apparatuses and methods for physical downlink control channel design for a discrete Fourier Transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform. The apparatuses and methods can include at least operating a base station (BS) to generate one or more physical downlink control channels (PDCCH) in a time division multiplexing (TDM) manner using a Discrete Fourier Transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform, generate a demodulation reference signal (DMRS) which is multiplexed in the TDM manner with the one or more PDCCH, and transmit the one or more PDCCH and the DMRS to a user equipment (UE).

    System and Method for Beamed Reference Signal With Hybrid Beam
    26.
    发明申请
    System and Method for Beamed Reference Signal With Hybrid Beam 有权

    公开(公告)号：US20210006320A1

    公开(公告)日：2021-01-07

    申请号：US17025094

    申请日：2020-09-18

    Applicant: Apple Inc.

    Inventor： Wenting CHANG ,  Gang XIONG ,  Yuan ZHU ,  Huaning NIU ,  Yushu ZHANG

    IPC: H04B7/06 ,  H04W16/28 ,  H04L5/00 ,  H04W74/08

    Abstract: Described is an apparatus of an Evolved Node-B (eNB). The apparatus may comprise a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to associate a first Beam Reference Signal (BRS) for a first Transmit (Tx) beam having a first beamwidth with one or more second BRSes for one or more respectively corresponding second Tx beams having a second beamwidth. The second circuitry may be operable to generate a first BRS transmission carrying the first BRS, and to generate one or more second BRS transmissions carrying the one or more respectively corresponding second BRSes. The third circuitry may be operable to provide information regarding the first BRS and the second BRSes to the second circuitry.

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