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61 条记录 (耗时 0.025 秒)

    METHOD FOR PERFORMING QUANTUM SECURE DIRECT COMMUNICATION IN QUANTUM COMMUNICATION SYSTEM, AND APPARATUS THEREFOR
    1.
    发明公开
    METHOD FOR PERFORMING QUANTUM SECURE DIRECT COMMUNICATION IN QUANTUM COMMUNICATION SYSTEM, AND APPARATUS THEREFOR 审中-实审

    公开(公告)号：EP4376351A1

    公开(公告)日：2024-05-29

    申请号：EP21951002.1

    申请日：2021-07-21

    申请人： LG Electronics Inc.

    发明人： AHN, Byungkyu ,  LEE, Sangrim ,  LEE, Hojae ,  KIM, Jayeong

    IPC分类号： H04L9/08 ,  H04B10/70 ,  H04B10/85 ,  H04L1/20

    CPC分类号： H04B10/85 ,  H04B10/70 ,  H04L9/08 ,  H04L1/20

    摘要： The present specification provides a quantum secure direct communication (QSDC) method by which a transmitting end transmits a message on the basis of differential time coding, in a quantum communication system. More specifically, the method comprises the steps of receiving, from a receiving end on a quantum channel, (i) at least one initial time state configured by including a time interval equal to a dead time of a single photon detector of the receiving end and (ii) at least one initial phase state; receiving, from the receiving end on a classical channel, time state location information for selecting a specific initial time state for encoding of information transmitted to the receiving end; selecting the specific initial time state for the encoding, on the basis of the time state location information; generating an encoding time state by encoding the information on the basis of the selected specific initial time state, the encoding time state being generated by applying a time shift on the basis of a value of the information being encoded; and transmitting a message including the encoding time state to the receiving end through the quantum channel, wherein the message is restored on the basis of a time difference between information on the at least one initial time state stored in the receiving end and information on the encoding time state.

    TRANSMITTING AND RECEIVING METHOD IN 1-BIT QUANTIZATION SYSTEM AND APPARATUS THEREFOR
    2.
    发明公开
    TRANSMITTING AND RECEIVING METHOD IN 1-BIT QUANTIZATION SYSTEM AND APPARATUS THEREFOR 审中-公开

    公开(公告)号：EP3996308A1

    公开(公告)日：2022-05-11

    申请号：EP19935858.1

    申请日：2019-07-03

    申请人： LG Electronics Inc.

    发明人： LEE, Sangrim ,  KIM, Byounghoon

    IPC分类号： H04L1/20 ,  H04L27/18 ,  H04L25/49 ,  H04B17/30

    摘要： A method for transmitting and receiving a signal in a wireless communication system and an apparatus therefor are disclosed in the present disclosure. Specifically, a method for transmitting and receiving a signal by a receiving apparatus in a wireless communication system, according to an embodiment of the present disclosure, may comprise the steps of: continuously receiving a plurality of reference signals from a transmitting apparatus; sorting the ranges of channel phases on the basis of the plurality of reference signals; grouping the ranges of the channel phases into two or more groups; and receiving a data signal from the transmitting apparatus.

    METHOD FOR RECEIVING INFORMATION FOR MEASURING SELF-INTERFERENCE, AND TERMINAL THEREFOR
    3.
    发明公开
    METHOD FOR RECEIVING INFORMATION FOR MEASURING SELF-INTERFERENCE, AND TERMINAL THEREFOR 审中-公开

    公开(公告)号：EP3713113A1

    公开(公告)日：2020-09-23

    申请号：EP17932495.9

    申请日：2017-11-14

    申请人： LG Electronics Inc.

    发明人： KIM, Dongkyu ,  LEE, Sangrim

    IPC分类号： H04B17/345 ,  H04B17/24

    摘要： A method for a terminal to receive information for measuring self-interference may comprise: a step of receiving, from a base station, RS configuration information including information on an RS for measuring self-interference; a step of measuring self-interference on the basis of the RS configuration information by using the RS for measuring self-interference; and a step of reporting, to the base station, information on the measurement result of the self-interference.

    METHOD FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR
    5.
    发明公开
    METHOD FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR 审中-公开

    公开(公告)号：EP3678426A1

    公开(公告)日：2020-07-08

    申请号：EP18847987.7

    申请日：2018-08-20

    申请人： LG Electronics Inc.

    发明人： KIM, Myeongjin ,  LEE, Sangrim

    IPC分类号： H04W56/00 ,  H04W64/00

    摘要： A method for a terminal to transmit and receive signals for position estimation in a wireless communication system according to an embodiment of the present invention comprises the steps of: receiving a downlink (DL) positioning reference signal (PRS) from each of a serving base station and reference base stations; measuring phase differences between sinusoidal components included in the DL PRSs for each of the serving base station and the reference base stations; generating an uplink (UL) PRS on the basis of the measured phase differences; and transmitting the UL PRS to the serving base station, wherein the terminal may report the phase difference measured for the serving base station and the phase differences measured for the reference base stations through the transmission of the UL PRS to the serving base station.