公开(公告)号：US11943324B2

公开(公告)日：2024-03-26

申请号：US17594514

申请日：2019-05-23

Applicant: LG ELECTRONICS INC.

Inventor： Kyuin Lee ,  Hyowon Bae ,  Jaewook Song

IPC: H04L69/04 ,  H04B17/336 ,  H04L1/00 ,  H04B7/0413

CPC classification number: H04L69/04 ,  H04B17/336 ,  H04L1/0005 ,  H04L1/0009 ,  H04B7/0413

Abstract: An electronic device according to one embodiment of the present invention comprises: a first transmission antenna module which transmits a monitoring signal for a radio link on the basis of a preset transmission antenna weight vector according to a first control signal; a first reception antenna module which receives the monitoring signal from the first transmission antenna module on the basis of a preset reception antenna weight vector, and generates first and second monitoring result information on the basis of the monitoring signal; a second transmission antenna module which transmits the first and second monitoring result information; a second reception antenna module which receives the first and second monitoring information from the second transmission antenna module; a processor which transmits the first control signal and a second control signal associated with a compression rate determined on the basis of the first and second monitoring information; and a data compression module which performs compression on a data stream on the basis of the second control signal.

公开(公告)号：US11381282B2

公开(公告)日：2022-07-05

申请号：US17292693

申请日：2019-09-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Hyowon Bae ,  Jaewook Song ,  Kyuin Lee ,  Jinsoo Choi

IPC: H04B7/0413 ,  H04B7/06

Abstract: The present invention relates to an apparatus and a method for performing beamforming using multiple antennas in a wireless AV system. The present specification discloses a wireless data transmission apparatus comprising: a plurality of transmission antennas; a communication circuit for performing a MIMO beamforming procedure on the basis of an individual transmission sector sweep for each of the plurality of transmission antennas during a data transmission interval within a beacon interval, and transmitting a physical layer protocol data unit (PPDU) frame to a wireless data reception apparatus through the plurality of transmission antennas; and a processor connected to the communication circuit, and configured to generate AV data to be transmitted through the PPDU frame and provide the generated AV data to the communication circuit. The present invention can reduce time required for MIMO beamforming while minimizing training of an excessive sector combination in a communication procedure or information related to the MIMO beamforming in a wireless AV system, and maintain the reliability of the system by using an optimum sector combination.

公开(公告)号：US10206178B2

公开(公告)日：2019-02-12

申请号：US15389360

申请日：2016-12-22

Applicant: LG ELECTRONICS INC.

Inventor： Joongkwan Huh ,  Jaewook Song ,  Sukhyon Yoon ,  Kyuin Lee

IPC: H04B7/04 ,  H04W52/24 ,  H04B7/0413 ,  H04J11/00

Abstract: Provided are a method of selectively using an interference rejection combining (IRC) receiver by a user equipment (UE) in a wireless communication system, and an apparatus supporting the same. The UE may calculate a dominant interferer proportion (DIP) estimation parameter based on a covariance matrix, may estimate a DIP based on the DIP estimation parameter, and may determine whether to use the IRC receiver based on the estimated DIP and a DIP threshold.

公开(公告)号：US10200221B2

公开(公告)日：2019-02-05

申请号：US15395499

申请日：2016-12-30

Applicant: LG ELECTRONICS INC.

Inventor： Kyuin Lee ,  Jaewook Song ,  Sukhyon Yoon

IPC: H04W4/00 ,  H04L25/03 ,  H04B17/318 ,  H04B7/0413 ,  H04L5/00 ,  H04L27/26 ,  H04W52/36 ,  H04W52/42 ,  H04B7/0456 ,  H04B7/10 ,  H04W88/02 ,  H04W88/08

Abstract: Provided are a method for a user equipment to select a codebook index in a wireless communication system and an apparatus supporting the method. The method performed by the user equipment comprises performing zero padding for a first vector, wherein the first vector represents a channel state measured by a receive antenna for a first transmit antenna; performing IFFT for a second vector, wherein the second vector is obtained by performing the zero padding for the first vector; performing receive antenna combining for a third vector, wherein the third vector is obtained by performing IFFT for the second vector; and detecting a maximum element from a fourth vector, wherein the fourth vector is obtained by performing the receive antenna combining for the third vector.

公开(公告)号：US11838168B2

公开(公告)日：2023-12-05

申请号：US17593774

申请日：2019-04-30

Applicant: LG ELECTRONICS INC.

Inventor： Joongkwan Huh ,  Jaewook Song ,  Kyuin Lee

IPC: H04L5/00 ,  H04L27/26 ,  H04L27/38 ,  H04L27/34

CPC classification number: H04L27/3809 ,  H04L27/3427

Abstract: A method for supporting a receiving operation based on 2D-NUC performed by a first wireless device according to the present embodiment, comprises the steps of: receiving first and second input information from a second wireless device; performing equalization on the first and second input information; and generating LLR information on the basis of lookup table information predetermined for the equalized first and second input information and 2D-NUC.

公开(公告)号：US11743089B2

公开(公告)日：2023-08-29

申请号：US17758597

申请日：2020-01-31

Applicant: LG ELECTRONICS INC.

Inventor： Joongkwan Huh ,  Kyuin Lee ,  Jaewook Song ,  Kyungsoo Woo ,  Yoonsuk Oh

IPC: H04L27/26

CPC classification number: H04L27/2647

Abstract: The present specification relates to a reception apparatus and method for demodulating a signal in a wireless AV system. The reception apparatus estimates a transmission signal on the basis of an MMSE weight matrix. The reception apparatus divides the estimated transmission signal for respective reception antennas and performs an IFFT. The reception apparatus estimates and compensates for phase noise for the respective reception antennas on the basis of the signal for which the IFFT has been performed. The reception apparatus demodulates the estimated and compensated signal for respective streams.

公开(公告)号：US11438040B2

公开(公告)日：2022-09-06

申请号：US17299740

申请日：2019-12-02

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Jaewook Song ,  Hyowon Bae ,  Jinsoo Choi ,  Kyuin Lee

IPC: H04L5/12 ,  H04B7/0456 ,  H04B7/0408 ,  H04B7/0491 ,  H04B7/06 ,  H01Q19/13 ,  H01Q21/24

Abstract: The present disclosure relates to a data transmission apparatus and method using a polarized antenna in a wireless AV system, and a data reception apparatus and method. The present specification provides a method for performing polarization alignment for a downlink on the basis of reciprocity, a method for performing polarization alignment for an uplink, and a method for performing polarization alignment independently for each DMG antenna when one data transmission apparatus or one data reception apparatus uses multiple DMG antennas. Optimal MIMO performance can be guaranteed by aligning polarization between multiple antennas of the data transmission apparatus and the data reception apparatus in the wireless AV system, the polarization alignment for a downlink or an uplink may be selectively performed on the basis of reciprocity, and polarization distortion can be reduced through the independent polarization alignment between each DMG antenna.

公开(公告)号：US12212444B2

公开(公告)日：2025-01-28

申请号：US17640243

申请日：2020-03-31

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Kyuin Lee

IPC: H04L1/00 ,  H04L27/26 ,  H04W84/12

Abstract: A method and a device for transmitting an A-PPDU in a wireless LAN system are proposed. Specifically, a transmission STA generates an A-PPDU and transmits the A-PPDU to a reception STA. A first PPDU and a second PPDU are aggregated into the A-PPDU. The first PPDU includes an L-Header field, a first EDMG-Header field, and a first data field. The second PPDU includes a second EDMG-Header field and a second data field. Zero padding is inserted in the first data field on the basis of the minimum number of symbol blocks of the first PPDU.

公开(公告)号：US12068798B2

公开(公告)日：2024-08-20

申请号：US17796508

申请日：2020-02-03

Applicant: LG ELECTRONICS INC.

Inventor： Kyuin Lee ,  Jaewook Song ,  Hyowon Bae

IPC: H04B17/336 ,  H04B7/0413 ,  H04N19/423 ,  H04W28/06

CPC classification number: H04B17/336 ,  H04B7/0413 ,  H04N19/423 ,  H04W28/06

Abstract: The present specification relates to a transmission apparatus and method for transmitting a signal in a wireless AV system. The transmission apparatus measures a signal to interference plus noise ratio (SINR) in a radio link. The transmission apparatus selects a modulation and coding scheme (MCS) set on the basis of the measured SINR. The transmission apparatus selects an optimal MCS from among the MCS set on the basis of the priority of a signal. The transmission apparatus transmits the signal on the basis of the optimal MCS.

公开(公告)号：US12047203B2

公开(公告)日：2024-07-23

申请号：US17594297

申请日：2019-05-08

Applicant: LG ELECTRONICS INC.

Inventor： Kyungsoo Woo ,  Kyuin Lee ,  Joongkwan Huh

IPC: H04L25/02 ,  H04J13/00 ,  H04L27/26

CPC classification number: H04L25/0204 ,  H04J13/0014 ,  H04L27/2607

Abstract: A method by which a first wireless device tracks a channel in a wireless AV system, according to one embodiment of the present invention, comprises the steps of: receiving a radio signal including a first part related to a preamble and a second part related to a data block and a GI; estimating an initial channel on the basis of the preamble; estimating a residual channel on the basis of the GI, wherein a reconstruction sequence reconstructed on the basis of a Golay sequence having a predetermined length is applied to the GI; and updating a channel on the basis of first information acquired on the basis of the initial channel estimation and second information acquired on the basis of the residual channel estimation.