公开(公告)号：US12126387B2

公开(公告)日：2024-10-22

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：US12120652B2

公开(公告)日：2024-10-15

申请号：US17421216

申请日：2019-01-08

Applicant: LG ELECTRONICS INC.

Inventor： Kijun Jeon ,  Sangrim Lee ,  Hojae Lee

IPC: H04W72/04 ,  H04W72/0453

CPC classification number: H04W72/0453

Abstract: The present specification provides a method for transmitting a signal in a wireless communication system. More specifically, the method performed by a transmission terminal comprises the steps of: generating at least one bit into a complex symbol by using a modulation scheme; mapping the complex symbol to subcarriers each having an even index or subcarriers each having an odd index among subcarriers of at least one configured resource block; performing IFFT on the subcarriers to which the complex symbol is mapped, in order to generate a time-continuous signal; performing a DC bias on the time-continuous signal; and transmitting the DC biased signal.

公开(公告)号：US20230361873A1

公开(公告)日：2023-11-09

申请号：US18026414

申请日：2021-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Hojae Lee ,  Byounghoon Kim ,  Sangrim Lee

IPC: H04B10/079 ,  H04B10/60

CPC classification number: H04B10/07955 ,  H04B10/60

Abstract: A receiver used in an optical wireless communication system is provided. The receiver comprises: a receiving aperture for receiving an optical signal; a coupler for separating the optical signal received by means of the receiving aperture into a main signal and a sensing signal; a sensor for determining a control voltage Vo on the basis of the sensing signal; and a detector for outputting an electric signal which is an output voltage V on the basis of the main signal and control voltage Vo. The detector is formed such that the transfer function of the detector changes on the basis of the control voltage Vo.

公开(公告)号：US11658743B2

公开(公告)日：2023-05-23

申请号：US17597113

申请日：2019-06-28

Applicant: LG ELECTRONICS INC.

Inventor： Hojae Lee ,  Sangrim Lee ,  Byounghoon Kim

IPC: H04B10/00 ,  H04B10/112 ,  H04B10/2507

CPC classification number: H04B10/1123 ,  H04B10/2507

Abstract: A method of receiving, by a receiving terminal, a signal in optical wireless communication is proposed. The method may comprise: establishing a communication link for performing the optical wireless communication with a transmitting terminal; receiving an optical signal from the transmitting terminal through the communication link; and performing interference cancelation on the optical signal. Here, establishing the communication link comprises transmitting and receiving initial information with the transmitting terminal, wherein the initial information may include an orbital angular momentum (OAM) mode applied to the optical signal. In addition, the interference cancelation may be performed on the basis of the OAM mode.

公开(公告)号：US11290155B2

公开(公告)日：2022-03-29

申请号：US16756836

申请日：2018-10-17

Applicant: LG ELECTRONICS INC.

Inventor： Hojae Lee ,  Gwanmo Ku ,  Sangrim Lee

IPC: H03D3/22 ,  H04B7/0417 ,  H04B17/336 ,  H04B7/06

Abstract: A method for transmitting feedback information by a terminal may comprise the steps of: receiving, from a base station, information on a feedback group allocated to the terminal in a predefined feedback table; selecting a first feedback index in the allocated feedback group; and transmitting feedback information including the selected first feedback index to the base station, wherein the feedback table includes a plurality of feedback groups, the plurality of feedback groups in the feedback table include predetermined number of feedback indices, respectively, and the plurality of feedback groups in the feedback table have differently configured quantization level resolutions for the feedback information, respectively.

公开(公告)号：US11245290B2

公开(公告)日：2022-02-08

申请号：US17047526

申请日：2018-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Dongkyu Kim ,  Sangrim Lee ,  Hojae Lee

IPC: H02J50/20 ,  H02J50/80 ,  H02J50/40 ,  H02J50/00 ,  H01Q1/24 ,  H01Q1/52

Abstract: The present disclosure relates to an apparatus and a method for performing transmission and reception of wireless power. The apparatus comprises: a transmission signal processing unit configured to generate a transmission data signal and perform a modulation and an amplification; a transmission antenna configured to convert the transmission data signal into an RF signal and transmit the RF signal; at least one reception antenna configured to receive at least one of the RF signal or an external signal received from the outside; a wireless power reception unit configured to harvest power from the RF signal received through the at least one reception antenna; and a reception signal processing unit configured to demodulate the external signal received through the at least one reception antenna. Since the RF signal, which is radiated by the apparatus itself, is received again and utilized for power charging, energy can be recycled.

公开(公告)号：US11206653B2

公开(公告)日：2021-12-21

申请号：US16610487

申请日：2017-05-02

Applicant: LG ELECTRONICS INC.

Inventor： Hojae Lee ,  Sangrim Lee

IPC: H04W72/04 ,  H04B7/0456 ,  H04L5/00 ,  H04W72/08

Abstract: A method by which a terminal performs a multi-dimensional modulation (MM)-based non-orthogonal multiple access (NOMA) communication can comprise the steps of: receiving, from a base station, control information indicating a terminal specific codebook for a terminal in a predefined codebook set for an MM-based encoder; and receiving a downlink data channel from the base station on the basis of the indicated terminal specific codebook, or performing MM-based encoding on the basis of the indicated terminal specific codebook and then transmitting an uplink data channel.

公开(公告)号：US20210344382A1

公开(公告)日：2021-11-04

申请号：US17273816

申请日：2018-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Kukheon Choi ,  Jiwon Kang ,  Hojae Lee

IPC: H04B7/0426 ,  H04W72/04 ,  H04W72/10 ,  H04B7/06 ,  H04B7/0456

Abstract: In the present invention, disclosed are a method and terminal for performing beam management in a wireless connection system. In particular, the terminal comprises a radio frequency (RF) unit and a processor, and the processor controls the RF unit to receive information including a beam management region from a base station, wherein the beam management region may comprise a reference signal (RS) and preamble region, a first transition time region for transmission beam steering, and a second transition time region for reception beam steering.

公开(公告)号：US11134486B2

公开(公告)日：2021-09-28

申请号：US16681311

申请日：2019-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Kwangseok Noh ,  Dongkyu Kim ,  Hyunsoo Ko ,  Kukheon Choi ,  Sangrim Lee ,  Hojae Lee

IPC: H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04L5/14 ,  H04W72/08

Abstract: A method for transmitting feedback information by a first user equipment (UE) in a wireless communication system supporting a full duplex radio (FDR) scheme includes measuring, based on information on a second UE received from a base station (BS), an inter-device interference (IDI) related to the second UE; and transmitting, to the BS, feedback information related to the IDI.

公开(公告)号：US11129107B2

公开(公告)日：2021-09-21

申请号：US16603209

申请日：2018-01-23

Applicant: LG ELECTRONICS INC.

Inventor： Sangwook Han ,  Gwanmo Ku ,  Sangrim Lee ,  Hojae Lee

IPC: H04W72/04 ,  H04W52/14 ,  H04W52/28 ,  H04W52/36 ,  H04W56/00 ,  H04W74/08 ,  H04W80/02

Abstract: The present invention relates to a method and device for allowing a terminal to transmit, to a base station, uplink data in a wireless communication system. According to the present invention, the terminal: performs a random access procedure with a base station; sets transmission power for transmitting first uplink data; and transmits, to the base station, the first uplink data according to the set transmission power, wherein the transmission power can be set according to an altitude of the terminal.