公开(公告)号：US20220191560A1

公开(公告)日：2022-06-16

申请号：US17595058

申请日：2019-06-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04N21/2343 ,  H04N21/64 ,  H04L1/16

Abstract: The present invention relates to a data transmission device and reception device in a wireless AV system. Disclosed in the present specification is a wireless data transmission device comprising: a processor for generating a compressed bitstream by encoding media data; and a communication unit for segmenting the compressed bitstream, mapping the segmentation results to MSDUs, generating an MPDU frame sequentially including a MAC header, a frame body, and an FCS associated with the MAC header in order to transmit the MSDUs, generating a PPDU frame sequentially, which includes a preamble to which at least a portion of the MAC header is mapped, at least one PPDU to which the frame body and the FCS are mapped, and a TRN field, and transmitting the PPDU frame through a wireless channel. A data transmission rate can be improved through a reduction in overhead information.

公开(公告)号：US20220182469A1

公开(公告)日：2022-06-09

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

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：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：US20220014239A1

公开(公告)日：2022-01-13

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：US20150141048A1

公开(公告)日：2015-05-21

申请号：US14597613

申请日：2015-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Kyungsoo WOO ,  Sukhyon YOON ,  Hyowon BAE ,  Seunghee HAN ,  Hyungsung JUNG ,  Joonseok MAENG

IPC: H04W64/00 ,  G01S5/02 ,  G01S5/10

CPC classification number: H04W64/006 ,  G01S1/20 ,  G01S5/0221 ,  G01S5/0236 ,  G01S5/10 ,  H04W24/10 ,  H04W48/16 ,  H04W64/00

Abstract: A method of determining a position in a wireless communication system and apparatus thereof are disclosed. The present invention includes receiving system information including information on a reference cell and at least one neighbor cell from a location server, receiving positioning reference signals (PRSs) from the reference cell and the at least one neighbor cell using the system information, measuring reference signal time difference (RSTD) of each of the at least one neighbor cell for the reference cell, and transmitting the at least one measured RSTD to the location server. And, the RSTD is a relative timing difference between two cells. Moreover, the system information includes at least one cell for obtaining a system frame number (SFN) by the UE, as the reference cell or the at least one neighbor cell.

Abstract translation: 公开了一种确定无线通信系统中的位置的方法及其装置。 本发明包括从位置服务器接收包括关于参考小区和至少一个相邻小区的信息的系统信息，使用系统信息从参考小区和至少一个相邻小区接收定位参考信号（PRS），测量参考信号 用于所述参考小区的所述至少一个相邻小区中的每一个的时间差（RSTD），以及将所述至少一个测量的RSTD发送到所述位置服务器。 而且，RSTD是两个单元之间的相对定时差。 此外，系统信息包括至少一个用于获取UE的系统帧号（SFN）的小区作为参考小区或至少一个相邻小区。

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：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.