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    Method of demodulating control channel and data channel in wireless communciation system and apparatus therefor
    101.
    发明授权
    Method of demodulating control channel and data channel in wireless communciation system and apparatus therefor 有权

    公开(公告)号：US09755871B1

    公开(公告)日：2017-09-05

    申请号：US15448448

    申请日：2017-03-02

    Applicant: LG ELECTRONICS INC.

    Inventor： Sangrim Lee ,  Hojae Lee ,  Dongkyu Kim ,  Kwangseok Noh

    IPC: H04B15/00 ,  H04L27/14 ,  H04L25/02

    CPC classification number: H04L25/0204 ,  H04L5/0048 ,  H04L25/0226 ,  H04L25/0228 ,  H04W52/04

    Abstract: A method of demodulating a channel by a user equipment in a wireless communication system, include the steps of receiving information including a total power value of reference signals (RSs), a power difference value between power of a first RS for control information and a power of a second RS for data among the RSs, a port number of an additional RS, a cyclic shift (CS) value of the additional RS, and a power value of the additional RS and a power difference value between second RSs for the control information, performing channel estimation on a first channel on which the additional RS is received and a second channel received from a port identical to the port number of the additional RS and the second channel on which the first RS to which a CS value different from the CS value of the additional RS is applied is received, obtaining a power difference value between the power of the additional RS and the power of the first RS based on the channel estimation of the first and the second channels, and determining a number of rank of the second RS based on the total power value of the RSs, the power value of the additional RS, a power difference value between the power of the first RS and the power of the second RS, the obtained power difference value between the power of the additional RS and the power of the first RS, and the power difference value between the power of the second RSs.

    Method and apparatus for correcting polarization distortion of faraday rotating mirror in plug-and-play quantum key distribution system
    102.
    发明授权
    Method and apparatus for correcting polarization distortion of faraday rotating mirror in plug-and-play quantum key distribution system 有权

    公开(公告)号：US12284273B2

    公开(公告)日：2025-04-22

    申请号：US18044865

    申请日：2020-09-11

    Applicant: LG Electronics Inc.

    Inventor： JaYeong Kim ,  Hojae Lee ,  Byungkyu Ahn ,  Byounghoon Kim ,  Sangrim Lee

    IPC: H04L9/08 ,  G02B27/28 ,  H04B10/70

    Abstract: Provided is a method and device for correcting an error in a communication system, the method including: transmitting, to another device, data encrypted based on key information. The key information is obtained by: incident a detection pulse on a variable Faraday rotating mirror and a reference pulse on a first mirror, respectively, wherein the detection pulse and the reference pulse are pulses branched from a test pulse; generating a first current in a balanced photodetector (BPD) based on a first component obtained as the detection pulse is reflected from the variable Faraday rotating mirror and a second component obtained as the reference pulse is reflected from the first mirror; converting the first current into a second current; incident the second current on the variable Faraday rotating mirror; and correcting the error in the variable Faraday rotating mirror based on the incident second current.

    Method and device for adapting learning class-based system to AI MIMO
    104.
    发明授权
    Method and device for adapting learning class-based system to AI MIMO 有权

    公开(公告)号：US12176985B2

    公开(公告)日：2024-12-24

    申请号：US18265109

    申请日：2020-12-04

    Applicant: LG Electronics Inc.

    Inventor： Hojae Lee ,  Sangrim Lee ,  Kyungho Lee ,  Yeongjun Kim ,  Kijun Jeon ,  Sungjin Kim

    IPC: H04B7/06 ,  H04B17/391

    Abstract: The present specification provides a method fir transmitting learning class information, the method being performed by a terminal in a wireless communication system and comprising the steps of: transmitting a random access (RA) preamble to a base station; receiving a random access response (RAR) from the base station in response to the RA preamble; performing a radio resource control (RRC) connection procedure with the base station; determining the learning class information, wherein the learning class information is information about the degree of performance improvement in online learning, and the online learning is artificial intelligence (AI) algorithm-based learning following the activation of the wireless communication system; transmitting the learning class information to the base station; and performing channel state information (CSI) feedback according to the learning class information.

    COMMUNICATION METHOD AND SERVER FOR DISTRIBUTED LEARNING BY WHICH SERVER DERIVES FINAL LEARNING RESULTS ON BASIS OF LEARNING RESULTS OF PLURALITY OF DEVICES
    109.
    发明公开
    COMMUNICATION METHOD AND SERVER FOR DISTRIBUTED LEARNING BY WHICH SERVER DERIVES FINAL LEARNING RESULTS ON BASIS OF LEARNING RESULTS OF PLURALITY OF DEVICES 审中-公开

    公开(公告)号：US20230325634A1

    公开(公告)日：2023-10-12

    申请号：US18024635

    申请日：2020-09-03

    Applicant: LG ELECTRONICS INC.

    Inventor： Kijun Jeon ,  Sangrim Lee ,  Hojae Lee ,  Yeongjun Kim ,  Taehyun Lee

    IPC: G06N3/045

    CPC classification number: G06N3/045

    Abstract: Disclosed is a communication method for distributed learning by which a server derives a final learning result on the basis of learning results of a plurality of devices. A communication method for distributed learning, according to the present disclosure, comprises steps in which: a server receives position information about each of a plurality of devices; the server configures, on the basis of the position information, a primary group including at least two primary devices from among the plurality of devices; the server configures, on the basis of channel state information, a secondary group including at least one secondary device from among the primary devices; and secondary devices belonging to different secondary groups use different time slots or different frequency regions to communicate with the server by a non-orthogonal scheme. A terminal of the present disclosure may be linked to an artificial intelligence module, a drone (unmanned aerial vehicle (UAV)), a robot, an augmented reality (AR) device, a virtual reality (VR) device, a device related to a 6G service, and the like.

    METHOD AND DEVICE FOR TRANSMITTING/RECEIVING WIRELESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM
    110.
    发明申请
    METHOD AND DEVICE FOR TRANSMITTING/RECEIVING WIRELESS SIGNAL IN WIRELESS COMMUNICATION SYSTEM 有权

    公开(公告)号：US20230079521A1

    公开(公告)日：2023-03-16

    申请号：US17799074

    申请日：2020-02-21

    Applicant: LG ELECTRONICS INC.

    Inventor： Kijun Jeon ,  Sangrim Lee ,  Hojae Lee

    IPC: H04L25/03 ,  H04L25/02

    Abstract: A method for receiving data by a terminal in a wireless communication system according to the present document comprises: receiving a channel signal and a reference signal (RS) from a base station; and generating a sequence by filtering the RS, and decoding the channel signal on the basis of the generated sequence, wherein the filtering is zero forcing (ZF) filtering, and the decoding of the channel signal is a selection of one parameter from among parameter sets generated in accordance with a colored-noise machine learning process.

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