公开(公告)号：US20250030487A1

公开(公告)日：2025-01-23

申请号：US18712923

申请日：2021-11-23

Applicant: LG Electronics Inc.

Inventor： Byungkyu AHN ,  Sangrim LEE ,  Hojae LEE

IPC: H04B10/70 ,  H04B10/532 ,  H04B10/548

Abstract: In order to perform quantum secure direct communication using a high-dimensional quantum state quantum state based on polarization and phase information, a method performed by a first device in a communication system may comprise establishing a classic channel with a second device using a random access (RA) preamble and an RA response (RAR) message, receiving a forward pulse including photons in an initial quantum state from the second device, and transmitting a backward pulse representing a plurality of bits per photon by performing phase modulation and polarization modulation on the photons based on assistance of the classic channel

公开(公告)号：US20240322941A1

公开(公告)日：2024-09-26

申请号：US18573914

申请日：2021-06-23

Applicant: LG Electronics Inc.

Inventor： Kijun JEON ,  Sangrim LEE ,  Hojae LEE ,  Yeongjun KIM ,  Taehyun LEE

IPC: H04L1/00

CPC classification number: H04L1/0041 ,  H04L1/0061

Abstract: The present disclosure provides a method for performing federated learning by one user equipment (UE) with a plurality of user equipments (UEs) in a wireless communication system. More specifically, the method performed by one UE comprises receiving, from a base station, restriction information related to an order restriction for an information field for generating a local parameter transmitted by the one UE to perform the federated learning; performing encoding on the local parameter generated from an order restricted information field based on the restriction information, wherein the encoded local parameter consists of a systematic bit part and a parity part; performing modulation on the encoded local parameter, wherein the modulation is performed in different ways for each of the systematic bit part and the parity part; and transmitting, to the base station, a signal including the modulated local parameters.

公开(公告)号：US20240056293A1

公开(公告)日：2024-02-15

申请号：US18266799

申请日：2021-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Jayeong KIM ,  Byoung Hoon KIM ,  Hojae LEE ,  Sangrim LEE ,  Byungkyu AHN

IPC: H04L9/08 ,  H04W12/041

CPC classification number: H04L9/0852 ,  H04W12/041

Abstract: A communication system supporting quantum key distribution is disclosed. A method performed by a first device comprises transmitting or receiving a random access (RA) preamble to or from a second device, receiving or transmitting a random access response (RAR) message from or to the second device as a response to the RA preamble, performing a radio resource control (RRC) connection procedure with the second device, generating a sift key for communication with the second device and performing communication through a radio channel with the second device using the sift key.

公开(公告)号：US20240039641A1

公开(公告)日：2024-02-01

申请号：US18014052

申请日：2020-07-02

Applicant: LG ELECTRONICS INC.

Inventor： JaYeong KIM ,  Byungkyu AHN ,  Sangrim LEE ,  Hojae LEE

IPC: H04B10/70 ,  H04B10/077 ,  H04L9/08

CPC classification number: H04B10/70 ,  H04B10/077 ,  H04L9/0852

Abstract: Provided are a device and a method performed by the device to correct an error in a quantum communication system. The method is characterized by comprising: transmitting a random access (RA) preamble to another device; receiving a random access response (RAR) from the other device as a response to the RA preamble; performing a radio resource control (RRC) connection procedure with the other device; and transmitting data to the other device, wherein the data is encoded on the basis of key information, the error is measured on the basis of a test pulse, and the key information is distributed to the device and the other device on the basis of the error being corrected using an improved Faraday rotator mirror of the device.

公开(公告)号：US20230353247A1

公开(公告)日：2023-11-02

申请号：US18025767

申请日：2020-09-16

Applicant: LG ELECTRONICS INC.

Inventor： Hojae LEE ,  Sangrim LEE ,  Kijun JEON ,  JaYeong KIM ,  Byungkyu AHN

IPC: H04B10/50 ,  H04B10/548 ,  H04B10/564

CPC classification number: H04B10/504 ,  H04B10/548 ,  H04B10/564

Abstract: The present specification provides a method, performed by an apparatus, for transmitting at least one beam in a wireless communication system, the method comprising transmitting the at least one beam to another apparatus and receiving information about a result of measuring the at least one beam from the other apparatus, wherein the at least one beam is a beam generated on the basis of a signal synthesized from a laser signal being incident on a meta surface from a power controller, the laser signal consists of a plurality of frequency components, the synthesized signal is a signal in which power amplification is applied to each of the plurality of frequency components, and the power amplification is applied on the basis of the intensity regarding each of the plurality of frequency components.

公开(公告)号：US20230327728A1

公开(公告)日：2023-10-12

申请号：US18024962

申请日：2020-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Kijun JEON ,  Sangrim LEE ,  Hojae LEE ,  Yeongjun KIM ,  Sungjin KIM

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0634

Abstract: Disclosed is a method for aligning gradient symbols by using bias regarding AirComp in a signal amplitude range of a receiver. A method for aligning gradient symbols according to an embodiment of the present disclosure comprises the steps of: performing iteration of gradient values included in a first planar vector and applying clipping and bias values so as to obtain a second planar vector having gradient values in which symbols are aligned; and transmitting the second planar vector together with channel information to a server in the form of AirComp. Various embodiments 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 5G service, and the like.

公开(公告)号：US20230163843A1

公开(公告)日：2023-05-25

申请号：US17918523

申请日：2020-04-29

Applicant: LG ELECTRONICS INC.

Inventor： Hojae LEE ,  Sangrim LEE

IPC: H04B10/079 ,  H04B10/112 ,  H04B10/2507 ,  H04B10/85

CPC classification number: H04B10/0795 ,  H04B10/112 ,  H04B10/2507 ,  H04B10/85

Abstract: A method and apparatus for transmitting and receiving signals in a wireless communication system, according to an embodiment of the present invention, may comprise a feature of applying a phase pattern to a wavefront of an optical signal and a feature of transmitting the optical signal. The phase pattern may be determined on the basis of an optical phase shift characteristic of a phase mask, and the phase mask may be determined on the basis of a quantization order and a phase order.

公开(公告)号：US20220321213A1

公开(公告)日：2022-10-06

申请号：US17596854

申请日：2019-06-28

Applicant: LG ELECTRONICS INC.

Inventor： Hojae LEE ,  Sangrim LEE ,  Kijun JEON

IPC: H04B10/079 ,  G01S13/06 ,  H04B10/40

Abstract: A method by which a transmission terminal transmits a signal in an optical wireless communication system can comprise: transmitting a first optical signal including a reference signal to a reception terminal having established a communication link with the transmission terminal; receiving feedback information about the first optical signal from the reception terminal; and transmitting a second optical signal to the reception terminal on the basis of the feedback information, wherein an orbital angular momentum (OAM) mode of the second optical signal can be selected on the basis of the feedback information.

公开(公告)号：US20220103253A1

公开(公告)日：2022-03-31

申请号：US17310562

申请日：2019-02-12

Applicant: LG ELECTRONICS INC.

Inventor： Hojae LEE ,  Sangrim LEE ,  Woonghee LEE

IPC: H04B10/116

Abstract: Proposed is a method for transmitting signals in visible light communications. The method for transmitting signals in visible light communications comprises: a step of receiving interference information from a receiving end; a step of transmitting a constellation set index to the receiving end; and a step of transmitting, to the receiving end, signals modified on the basis of the constellation set index. Meanwhile, the constellation set index may be selected on the basis of the received interference information.

公开(公告)号：US20220069842A1

公开(公告)日：2022-03-03

申请号：US17421210

申请日：2019-12-05

Applicant: LG Electronics Inc.

Inventor： Kijun JEON ,  Sangrim LEE ,  Hojae LEE

IPC: H03M13/11 ,  H04L1/20 ,  H04L1/00

Abstract: A method for transmitting an information block on the basis of a low density parity check (LDPC) code in a wireless communication system, according to the present disclosure, may comprise: encoding an information block on the basis of a LDPC basegraph H_BG including [MATRIX]; and transmitting the encoded information block. Each element of H_BG is either zero (“0”) or one (“1”), and each element which is “0”, among the elements of H_BG, may represent a Z×Z zero matrix, and each element which is “1”, among the elements of H_BG, may represent a Z×Z matrix acquired on the basis of a circular permutation matrix acquired by circularly shifting a Z×Z identity matrix to the left or right. The submatrix T_BG of H_BG may be a dual diagonal matrix, and the submatrix D_BG of H_BG may be a dual diagonal matrix. The encoding of the information block on the basis of H_BG may comprise encoding the information block on the basis of a parity check matrix (PCM) H which corresponds to H_BG.