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：US20220077957A1

公开(公告)日：2022-03-10

申请号：US17309931

申请日：2019-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Kijun JEON ,  Sangrim LEE

IPC: H04L1/00 ,  H03M13/11 ,  G06N3/04

Abstract: Proposed is a method for a terminal to decode a signal. In particular, the method for a terminal to decode a signal comprises: a step for demodulating a first low density parity check (LDPC)-coded signal; and a step for decoding a second signal obtained from the first demodulated signal through a trained neural network. The second signal is obtained by using: an output sequence generated on the basis of the trained neural network; and a log likelihood ratio (LLR) sequence of the first signal.

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.

公开(公告)号：US20220006497A1

公开(公告)日：2022-01-06

申请号：US17470567

申请日：2021-09-09

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Kijun KIM ,  Sangrim LEE

IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26

Abstract: Disclosed are a method for transmitting and receiving channel state information in wireless communication system and an apparatus therefor. Specifically, a method for transmitting, by a user equipment (UE), Channel State Information (CSI) in a wireless communication system may include: receiving, from a base station, a channel state information reference signal (CSI-RS) through multiple antenna ports; and reporting, to the base station, CSI, in which the CSI may include selection information indicating a plurality of codewords used for generating a precoding matrix in a codebook for reporting the CSI, and a power coefficient, a phase offset, and a phase shift value applied to each of the plurality of codewords in terms of a configured bandwidth, and the precoding matrix may be generated in units of subbands within the configured bandwidth based on a linear combination of the power coefficient, the phase offset, and the phase change value.

公开(公告)号：US20210289546A1

公开(公告)日：2021-09-16

申请号：US16334619

申请日：2017-07-27

Applicant: LG Electronics Inc.

Inventor： Hojae LEE ,  Sangrim LEE ,  Dongkyu KIM ,  Kwangseok NOH ,  Myeongjin KIM

IPC: H04W74/08 ,  H04L5/00

Abstract: Provided are a method and a device for performing communication using a non-orthogonal code multiple access scheme in a wireless communication system. Specifically, a terminal divides a terminal identifier into a first field, a second field, a third field and a fourth field and selects a first reference signal, a second reference signal, a third reference signal and a fourth reference signal. On the basis of the first reference signal, the second reference signal, the third reference signal or the fourth reference signal, the terminal transmits contention-based data to a base station. The first reference signal is selected on the basis of the first field and the maximum number of reference signals. The second reference signal is selected on the basis of the second field and the maximum number of reference signals. The third reference signal is selected on the basis of the third field and the maximum number of reference signals. The fourth reference signal is selected on the basis of the second field and the maximum number of reference signals.

公开(公告)号：US20210239820A1

公开(公告)日：2021-08-05

申请号：US16972567

申请日：2019-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Woonghee LEE ,  Sangrim LEE

IPC: G01S13/08

Abstract: A method of estimating, by a user equipment (UE), a location of the UE in a wireless communication system is disclosed. The method includes measuring distances between a plurality of anchor nodes and the UE; creating a first matrix using values of the measured distances; creating a third matrix based on the first matrix and a second matrix, the second matrix being a centering matrix; and estimating the location of the UE based on a result of comparing a first value generated based on eigenvalues of the third matrix with a second value that is a pre-defined reference value, wherein when the first value is greater than the second value, all the measured distances are distances measured through a line of sight (LOS) path, wherein when the first value is less than the second value, some of the measured distances are distances measured through a non-line of sight (NLOS) path.

公开(公告)号：US20210184909A1

公开(公告)日：2021-06-17

申请号：US16764723

申请日：2017-11-15

Applicant: LG ELECTRONICS INC.

Inventor： Sangwook HAN ,  Sangrim LEE ,  Gwanmo KU

IPC: H04L27/26 ,  H04L5/00 ,  H04W88/04

Abstract: The present application discloses a method for transmitting an uplink relay signal by a relay terminal in a wireless communication system. Specifically, the method comprises the steps of: superposition encoding relay data and side link data according to a predetermined power ratio so as to generate the uplink relay signal; and transmitting the uplink relay signal and a superposition encoding-specific reference signal sequence corresponding to the power ratio to a base station and a target terminal.

公开(公告)号：US20200322021A1

公开(公告)日：2020-10-08

申请号：US16301261

申请日：2016-06-08

Applicant: LG ELECTRONICS INC.

Inventor： Kukheon CHOI ,  Hyunsoo KO ,  Kwangseok NOH ,  Dongkyu KIM ,  Sangrim LEE

IPC: H04B7/06 ,  H04W48/12 ,  H04W72/04 ,  H04W72/08 ,  H04L5/14

Abstract: Disclosed is a terminal for performing an mmWave communication method and an mmWave communication method comprising: receiving information relating to a basic UL/DL configuration from an mmWave base station; generating statistical information relating to an mmWave downlink channel using a reference signal received from the mmWave base station, according to the basic UL/DL configuration; transmitting the statistical information to the mmWave base station through a legacy uplink; and receiving, from the mmWave base station, information relating to the UL/DL configuration which has been modified according to the statistical information.

公开(公告)号：US20200259554A1

公开(公告)日：2020-08-13

申请号：US16753732

申请日：2017-11-13

Applicant: LG ELECTRONICS INC.

Inventor： Dongkyu KIM ,  Ilmu BYUN ,  Sangrim LEE

IPC: H04B7/155 ,  H04B15/02 ,  H04B7/01

Abstract: A communication device for performing magnetic interference cancellation comprises: a baseband unit including a first transmission chain and a second transmission chain; a first distributed radio unit (RU) connected to the first transmission chain and set to a transmit (Tx) mode; and a second distributed RU connected to the second transmission chain and set to a receive (Rx) mode, wherein the baseband unit includes a phase correction unit, connected to the first transmission chain and the second transmission chain, for performing phase correction for the magnetic interference cancellation on a signal transmitted from the first transmission chain, and the second transmission chain is configured to transmit a signal output from the phase correction unit to the second distributed RU, the second distributed RU uses a signal that was output from the phase correction unit and has passed through the second transmission.