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39 条记录 (耗时 0.013 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.

    FREQUENCY GRADIENT METASURFACE-BASED FAST BEAM STEERING TRANSMISSION METHOD AND APPARATUS FOR OWC
    6.
    发明公开
    FREQUENCY GRADIENT METASURFACE-BASED FAST BEAM STEERING TRANSMISSION METHOD AND APPARATUS FOR OWC 审中-公开

    公开(公告)号：EP4160944A1

    公开(公告)日：2023-04-05

    申请号：EP20938160.7

    申请日：2020-05-28

    申请人： LG Electronics, Inc.

    发明人： LEE, Hojae ,  LEE, Sangrim ,  JEON, Kijun

    IPC分类号： H04B10/50 ,  H04B10/508 ,  H04B10/11

    摘要： The present specification provides a method and apparatus, the method being for transmitting a beam, performed by the apparatus, in an optical wireless communication system, and comprising: generating a pulse laser signal; making the pulse laser signal to be incident on a metasurface, wherein the beam is generated on the basis that the pulse laser signal is incident on the metasurface; and transmitting the beam to a reception apparatus, wherein the metasurface is determined on the basis of ω_0, d, Δω, and N, wherein ω_0 is a value of a center frequency, d is a value of a virtual antenna interval, Δω is a value of a frequency comb interval, and N is a value related to the number of frequency combs present within a gain bandwidth based on the center frequency.

    METHOD AND DEVICE FOR PERFORMING POSITIONING USING DRONE
    7.
    发明公开
    METHOD AND DEVICE FOR PERFORMING POSITIONING USING DRONE 审中-公开

    公开(公告)号：EP3742828A1

    公开(公告)日：2020-11-25

    申请号：EP18899540.1

    申请日：2018-01-12

    申请人： LG Electronics Inc.

    发明人： KIM, Myeongjin ,  LEE, Sangrim ,  LEE, Hojae

    IPC分类号： H04W64/00 ,  H04W56/00 ,  H04W72/04 ,  G01S5/00

    摘要： An embodiment of the present specification may provide a method for performing positioning using a drone by a terminal in a wireless communication system. The method for performing positioning using a drone by a terminal may comprise the steps of: transmitting information on a drone-positioning reference signal (D-PRS) configuration to a base station; receiving the D-PRS configuration information from the base station; receiving a positioning reference signal (PRS) from the base station and receiving the D-PRS from the drone; obtaining position-related information of the terminal on the basis of the PRS and the D-PRS; and transmitting the position-related information to the base station.

    METHOD AND APPARATUS FOR TRANSMITTING UPLINK DATA ON BASIS OF CONTENTION IN WIRELESS COMMUNICATION SYSTEM
    9.
    发明公开
    METHOD AND APPARATUS FOR TRANSMITTING UPLINK DATA ON BASIS OF CONTENTION IN WIRELESS COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：EP3609280A1

    公开(公告)日：2020-02-12

    申请号：EP18802690.0

    申请日：2018-05-15

    申请人： LG Electronics Inc.

    发明人： LEE, Hojae ,  LEE, Sangrim

    IPC分类号： H04W74/08 ,  H04W74/00 ,  H04W72/12

    摘要： Provided are a method and an apparatus for transmitting uplink data on the basis of contention in a wireless communication system. Specifically, a terminal receives, from a base station, allocation information for a contention zone in one resource zone. The allocation information includes a configuration field indicating locations and the number of contention zones. The terminal determines whether repetition of uplink data is to be performed, on the basis of downlink channel information. When it is determined that the repetition of uplink data is to be performed, the terminal transmits, to the base station, uplink data through all contention zones indicated by the configuration field. When it is determined that the repetition of uplink data is not to be performed, the terminal transmits, to the base station, uplink data through one contention zone arbitrarily selected from among all the contention zones indicated by the configuration field.