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    DYNAMICALLY BEAMFORMED CONTROL CHANNEL FOR BEAMFORMED CELLS
    2.
    发明申请
    DYNAMICALLY BEAMFORMED CONTROL CHANNEL FOR BEAMFORMED CELLS 有权

    公开(公告)号：US20220352943A1

    公开(公告)日：2022-11-03

    申请号：US17859363

    申请日：2022-07-07

    Applicant: Apple Inc.

    Inventor： Huaning Niu ,  Hyejung Jung ,  Gang Xiong ,  Yushu Zhang ,  Hooman Shirani-Mehr ,  Yuan Zhu ,  Jong-Kae Fwu

    IPC: H04B7/06 ,  H04J11/00 ,  H04L27/26 ,  H04L5/00 ,  H04W36/00 ,  H04W72/04 ,  H04W88/16

    Abstract: Disclosed herein are apparatuses, systems, and methods using or implementing dynamic beamforming in control channels, by transmitting downlink control channels to user equipment (UEs) in a number of orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A first OFDM symbol of the number of OFDM symbols can be transmitted using first beamforming parameters in a first direction, and a second OFDM symbol of the number of OFDM symbols can be transmitted using second beamforming parameters different from the first beamforming parameters and in a second direction different from the first direction. The number of OFDM symbols used, as well as other parameters, can be dynamically adjusted in subsequent subframes. Other embodiments are described.

    Physical broadcast channel design
    3.
    发明授权
    Physical broadcast channel design 有权

    公开(公告)号：US11343048B2

    公开(公告)日：2022-05-24

    申请号：US16408461

    申请日：2019-05-09

    Applicant: Apple Inc.

    Inventor： Gang Xiong ,  Hyejung Jung ,  Ralf Bendlin ,  Jong-Kae Fwu ,  Alexei Davydov

    IPC: H04L12/18 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04 ,  H04L1/06 ,  H04W84/04

    Abstract: Briefly, in accordance with one or more embodiments, apparatus of an evolved NodeB (eNB) comprises circuitry to configure one or more parameters for a 5G master information block (xMIB). The xMIB contains at least one of the following parameters: downlink system bandwidth, system frame number (SFN), or configuration for other physical channels, or a combination thereof. The apparatus of the eNB comprises circuitry to transmit the xMIB via a 5G physical broadcast channel (xPBCH) on a predefined resource, the xPBCH comprising a xPBCH. The xPBCH may use a DM-RS based transmission mode, and a beamformed xPBCH may be used for mid band and high band.

    Device and method for enhanced seamless mobility
    5.
    发明授权
    Device and method for enhanced seamless mobility 有权

    公开(公告)号：US11012281B2

    公开(公告)日：2021-05-18

    申请号：US16815933

    申请日：2020-03-11

    Applicant: Apple Inc.

    Inventor： Alexei Davydov ,  Hyejung Jung

    IPC: H04L27/26 ,  H04B7/024 ,  H04J11/00 ,  H04W76/27 ,  H04W48/12 ,  H04W72/04 ,  H04L5/00 ,  H04W56/00

    Abstract: Devices and methods of determining offsets for different eNBs in a dynamic switched CoMP network are generally described. A UE may receive, in an RRCConnectionReconfiguration message, DL parameter sets associated with different eNBs and having reference signal information for a PSS, SSS and DRS. The UE may receive reference signals based on the DL set associated with the eNB and determine a timing/frequency offset based on the reference signals. The offsets may be used to decode a dynamically switched PDSCH indicated by a PDCCH. The DL sets may indicate which PDCCH to detect or the PDCCH from the same cNB may be used and the PDSCH determined from a DCI in the PDCCH. A UL DCI may indicate which of UL parameter sets to use. The UL sets may indicate a reference signal to determine path loss and a timing advance value.

    Receive beam indication for 5G systems
    7.
    发明授权
    Receive beam indication for 5G systems 有权

    公开(公告)号：US10812173B2

    公开(公告)日：2020-10-20

    申请号：US16562111

    申请日：2019-09-05

    Applicant: Apple Inc.

    Inventor： Alexei Davydov ,  Hyejung Jung ,  Gregory Morozov

    IPC: H04B7/08 ,  H04B7/024

    Abstract: Systems and technologies described herein provide functionality for a cellular base station to dynamically indicate a reception (Rx) beam to be used by a user equipment (UE). The Rx beam can be indicated explicitly or implicitly. The UE can, for example, use the Rx beam for Physical Downlink Shared Channel (PDSCH) reception, Channel State Information Reference Signal (CSI-RS) measurements, and/or Channel State Information (CSI) calculation at the UE. Systems and technologies described herein are generally useful for systems that use multiple transmission (Tx) beams and/or that support Coordinated Multipoint (CoMP) transmission technology.

    ENHANCED SOUNDING REFERENCE SIGNALING FOR UPLINK BEAM TRACKING
    9.
    发明申请
    ENHANCED SOUNDING REFERENCE SIGNALING FOR UPLINK BEAM TRACKING 有权

    公开(公告)号：US20210083725A1

    公开(公告)日：2021-03-18

    申请号：US17031355

    申请日：2020-09-24

    Applicant: Apple Inc.

    Inventor： Honglei Miao ,  Hyejung Jung ,  Michael Faerber

    IPC: H04B7/024 ,  H04W72/04 ,  H04B7/0404 ,  H04B7/06 ,  H04B7/0413 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02

    Abstract: Apparatus, systems, and methods to implement enhanced sounding reference signaling for uplink (UL) beam tracking in communication systems are described. In one example, an apparatus of an evolved Node B (eNB) comprising processing circuit to broadcast system information about one or more sets of uplink transmit time intervals and bandwidths available for a sounding reference signal (SRS) transmission from a first user equipment (UE), configure one or more UE-specific SRS processes for the first UE for uplink beam tracking, and configure one or more millimeter wave access points (mmW APs) to transmit a mmW signal to the first UE and receive a mmW signal from the first UE. Other examples are also disclosed and claimed.

    Uplink power control for 5G systems
    10.
    发明授权
    Uplink power control for 5G systems 有权

    公开(公告)号：US10925005B2

    公开(公告)日：2021-02-16

    申请号：US16079494

    申请日：2017-03-23

    Applicant: APPLE INC.

    Inventor： Alexei Davydov ,  Hyejung Jung ,  Gregory Morozov ,  Victor Sergeev

    IPC: H04W52/14 ,  H04W52/42 ,  H04W52/58

    Abstract: This disclosure proposes to use multiple power control loops in the uplink. Each power control loop may be associated with a respective antenna beam transmitted from an antenna array of the electronic device (e.g. UE) in the uplink. For example, a beam (or uplink signal) may be associated with 1, 2 or even more MIMO layer. Hence, in this latter case, each power control loop may be associated with a respective set of one or more MIMO layers. This concept is application to open-loop, closed-loop power control or both.

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