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：US12074664B2

公开(公告)日：2024-08-27

申请号：US17596255

申请日：2019-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Chijun Ahn ,  Jinmin Kim ,  Jaewook Song ,  Jinsoo Choi

IPC: H04B7/0413 ,  H04B7/0491 ,  H04W74/08 ,  H04W76/14 ,  H04W76/19

CPC classification number: H04B7/0413 ,  H04B7/0491 ,  H04W74/08 ,  H04W76/14 ,  H04W76/19

Abstract: The present invention relates to a data transmission device and reception device in a wireless AV system. The present specification discloses a wireless data reception device comprising: a communication unit configured to receive data relating to an image from a wireless data transmission device via a wireless channel; a display unit for outputting the image; a processor configured to execute a standby mode in which a wireless data reception device or the wireless data transmission device is deactivated, and a connection reestablishment mode in which, when the wireless data reception device and the wireless data transmission device are activated, a connection setup relating to the wireless data transmission device is performed; and a memory connected to the processor and configured to store data relating to the image according to a command of the processor.

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：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：US12028749B2

公开(公告)日：2024-07-02

申请号：US17595264

申请日：2019-05-23

Applicant: LG ELECTRONICS INC.

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

IPC: H04W28/06

CPC classification number: H04W28/06

Abstract: The present disclosure relates to a transmission device and reception device for data in a wireless AV system. The transmission device comprises: a processor for encoding media data thereby generating a compressed bitstream; and a communication unit for: fragmenting the compressed bitstream and mapping the compressed bitstream to an MSDU; generating, for transmission of the MSDU, an MPDU frame sequentially comprising an MAC header, a frame body, and an FCS for the MAC header; generating, for the transmission of the MPDU frame, a PPDU sequentially comprising a preamble, at least one PSDU, and a TRN field; and transmitting the PPDU frame through a radio channel. A radio resource for transmission of actually necessary data can be secured by minimizing unnecessary overhead information (i.e., control-related information in the MAC header) from among data transmitted over radio.

公开(公告)号：US09793946B2

公开(公告)日：2017-10-17

申请号：US15322706

申请日：2014-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Joongkwan Huh ,  Jaewook Song ,  Hyungsung Jung ,  Sukhyon Yoon

IPC: H04B1/10 ,  H04B1/7115

CPC classification number: H04B1/7115 ,  H04B1/1081

Abstract: A disclosure of the present specification provides a rake receiver. The rake receiver may comprise: an oscillator; a radio frequency integrated circuit (RFIC) for processing analog signals, which are received after experiencing multipath propagation, according to a sampling clock generated by the oscillator and a carrier frequency clock; a rake processing unit for allocating fingers for each path to signals output from the RFIC, and then performing decoding, wherein the rake processing unit outputs information on a timing position through time tracking, a power metric sampled on-time, and the difference between a power metric at a half chip early-time and a power metric at a half chip late-time; and an auto frequency controller (AFC) for calculating a beta (β) value for adjusting the sampling clock of the oscillator according to the ratio of the difference between the power metric at the half chip early-time and the power metric at the half chip late-time to the power metric sampled on-time.

公开(公告)号：US12101664B2

公开(公告)日：2024-09-24

申请号：US17595965

申请日：2019-06-28

Applicant: LG ELECTRONICS INC.

Inventor： Seongyeon Kim ,  Jinmin Kim ,  Jaewook Song ,  Jinsoo Choi

IPC: H04W28/04 ,  H04L5/00 ,  H04W28/14 ,  H04W72/23

CPC classification number: H04W28/04 ,  H04L5/0055 ,  H04W28/14 ,  H04W72/23

Abstract: A device for transmitting data in a wireless AV system, and a device for receiving data in a wireless AV system. The device includes: a transceiver configured to receive, from an initiator, a forward direction data frame and reverse direction grant information, instructing that reverse direction transmission be allowed, within a transmission opportunity acquired by the initiator, generate and transmit to the initiator, a block ACK frame pertaining to the forward direction data frame, and buffer a reverse direction data frame to be transmitted to the initiator; and a processor connected to the transceiver and configured to acquire AV data from the forward direction data frame.

公开(公告)号：US12040862B2

公开(公告)日：2024-07-16

申请号：US17597595

申请日：2019-07-16

Applicant: LG ELECTRONICS INC.

Inventor： Jungho Noh ,  Jinmin Kim ,  Jaewook Song ,  Jinsoo Choi

IPC: H04B7/06 ,  H04L1/00 ,  H04W16/28 ,  H04W24/08

CPC classification number: H04B7/0617 ,  H04B7/0695 ,  H04L1/0003 ,  H04W16/28 ,  H04W24/08

Abstract: The present invention relates to a device and a method for performing channel selection in a wireless AV system. Such present specification discloses a wireless data transmission device for performing channel selection, the device comprising: a communication unit for performing the steps of selecting an initial channel in a non-connection state on the basis of first channel monitoring, transmitting a periodic beacon onto the initial channel in a standby mode after switching to a connection state, and selecting a new channel in the standby mode on the basis of second channel monitoring in an interval in which beacon transmission does not occur; and a processor connected to the communication unit so as to control the operation of the communication unit. Fast and economic channel selection appropriate for the wireless AV system is possible.

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.