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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.
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公开(公告)号：US20220353123A1
公开(公告)日：2022-11-03
申请号：US17640243
申请日：2020-03-31
Applicant: LG ELECTRONICS INC.
Inventor： Jinmin KIM , Kyuin LEE
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.
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3.发明申请公开(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.
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公开(公告)号：US20230043708A1
公开(公告)日：2023-02-09
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
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.
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公开(公告)号：US20180115444A1
公开(公告)日：2018-04-26
申请号：US15395499
申请日：2016-12-30
Applicant: LG ELECTRONICS INC.
Inventor： Kyuin LEE , Jaewook SONG , Sukhyon YOON
IPC: H04L25/03 , H04B7/0413 , H04B17/318 , H04L5/00
CPC classification number: H04L25/03904 , H04B7/0413 , H04B7/0456 , H04B7/10 , H04B17/318 , H04L5/0007 , H04L27/2634 , H04W52/367 , H04W52/42 , 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.
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Patent Agency Ranking
公开(公告)号：US20180110015A1
公开(公告)日：2018-04-19
申请号：US15389360
申请日：2016-12-22
Applicant: LG ELECTRONICS INC.
Inventor： Joongkwan HUH , Jaewook SONG , Sukhyon YOON , Kyuin LEE
CPC classification number: H04W52/243 , H04B7/0413 , H04J11/005
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.
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公开(公告)号：US20240088961A1
公开(公告)日：2024-03-14
申请号：US18272069
申请日：2021-06-10
Applicant: LG ELECTRONICS INC.
Inventor： Kyuin LEE , Jaewook SONG , Sukhyon YOON
IPC: H04B7/06
CPC classification number: H04B7/0617 , H04B7/0634 , H04B7/06952
Abstract: The present invention relates to an image display device. An image display device according to an embodiment of the present invention comprises: a display; and a wireless transmission device which is spaced apart from the display and transmits image data to the display by a wireless communication method, wherein the wireless transmission device includes at least one antenna device for wirelessly transmitting image data to the display, and the wireless transmission device generates, for beamforming tracking of a beam output from the antenna device, a beamforming candidate list including some of a plurality of antenna-based indexes corresponding to a peripheral region around the antenna device, and when a difference in a signal-to-noise ratio or a metric difference between a first index and a second index adjacent to the first index among some of the plurality of antenna-based indexes is less than a beam gain, the wireless transmission device excludes the second index from the beamforming candidate list. Accordingly, it is possible to quickly perform beamforming tracking when a blocker occurs between the wireless transmission device and the display, which are arranged apart from each other.
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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.
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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
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.
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公开(公告)号：US20220166650A1
公开(公告)日：2022-05-26
申请号：US17594297
申请日：2019-05-08
Applicant: LG ELECTRONICS INC.
Inventor： Kyungsoo WOO , Kyuin LEE , Joongkwan HUH
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.
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