公开(公告)号：US20220173956A1

公开(公告)日：2022-06-02

申请号：US17593774

申请日：2019-04-30

Applicant: LG ELECTRONICS INC.

Inventor： Joongkwan HUH ,  Jaewook SONG ,  Kyuin LEE

IPC: H04L27/38 ,  H04L27/34

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：US20220021422A1

公开(公告)日：2022-01-20

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: H04B7/0456 ,  H04B7/0408 ,  H04B7/0491 ,  H04B7/06

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：US20230059959A1

公开(公告)日：2023-02-23

申请号：US17796508

申请日：2020-02-03

Applicant: LG ELECTRONICS INC.

Inventor： Kyuin LEE ,  Jaewook SONG ,  Hyowon BAE

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

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：US20220311479A1

公开(公告)日：2022-09-29

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

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：US20220248265A1

公开(公告)日：2022-08-04

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

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：US20220216897A1

公开(公告)日：2022-07-07

申请号：US17599419

申请日：2019-05-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyowon BAE ,  Jungwoo KIM ,  Jinmin KIM ,  Jaewook SONG ,  Jinsoo CHOI

IPC: H04B7/0408 ,  H04B17/309 ,  H04B7/0413 ,  H04B7/0491

Abstract: A method by which a first wireless device maintains beamforming in a wireless AV system, according to one embodiment of the present invention, comprises the steps of: transmitting a packet including a non-training field and a plurality of training fields to a second wireless device, wherein the non-training field is transmitted on the basis of the best sector combination from among a plurality of candidate sector combinations predetermined between the first wireless device and the second wireless device, and the plurality of training fields is transmitted on the basis of the plurality of candidate sector combinations; receiving candidate beam feedback information as a response to the plurality of training fields; determining, on the basis of the candidate beam feedback information, whether a channel change due to an obstacle occurs; and updating the best sector combination on the basis of the candidate beam feedback information when it is determined that the channel change occurs.