公开(公告)号：US11979871B2

公开(公告)日：2024-05-07

申请号：US17286996

申请日：2019-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinsoo Choi ,  Jinmin Kim ,  Eunsung Park ,  Sunwoong Yun

IPC: H04W72/12 ,  H04L27/26 ,  H04W72/04 ,  H04W72/044 ,  H04W72/0453 ,  H04W72/1263 ,  H04W84/12

CPC classification number: H04W72/1263 ,  H04L27/2607 ,  H04W72/0453 ,  H04W72/046 ,  H04W84/12

Abstract: Proposed are a method and device for transmitting EHT PPDU in a wireless LAN system. Particularly, a transmission STA generates first and second LTF symbols. The transmission STA transmits EHT PPDU comprising the first and second LTF symbols to a reception STA. The first and second LTF symbols are generated on the basis of an LTF sequence for first to fourth spatial streams. In the first LTF symbol, the LTF sequence for the first to fourth spatial streams is mapped to tones in four tone units in a frequency domain. In the second LTF symbol, the LTF sequence for the first to fourth spatial streams is mapped to tones in four tone units in a frequency domain. The LTF sequence, for the first to fourth spatial streams, mapped to the frequency domain of the second LTF symbol is mapped to a tone by means of cyclic shifting, by two tones, the LTF sequence, for the first to fourth spatial streams, mapped to the frequency domain of the first LTF symbol.

公开(公告)号：US11838565B2

公开(公告)日：2023-12-05

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 ,  H04L1/16 ,  H04N21/64

CPC classification number: H04N21/2343 ,  H04L1/16 ,  H04N21/64

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：US11777651B2

公开(公告)日：2023-10-03

申请号：US17268060

申请日：2019-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong Yun ,  Jinmin Kim ,  Eunsung Park ,  Dongguk Lim ,  Jinsoo Choi

IPC: H04L1/06 ,  H04L69/324 ,  H04W84/12

CPC classification number: H04L1/06 ,  H04L69/324 ,  H04W84/12

Abstract: A method and an apparatus for transmitting a PPDU in a WLAN system are proposed. Specifically, a transmitter generates a PPDU and transmits the PPDU to a receiver. The PPDU includes a legacy field and an EHT field. The legacy field includes a VHT-STF and a HE-STF. The EHT field includes an EHT-STF and a data field. The EHT field is configured on the basis of a CSD value of each transport chain. The CSD value is determined as a candidate CSD value in which the sum of a first absolute value and a second absolute value is the minimum on the basis of a power ratio. The power ratio is a ratio of a received power of the VHT-STF, the HE-STF, or the EHT-STF to a received power of the data field. The first absolute value is an absolute value of a value related to 5 percent of a CDF relative to the power ratio. The second absolute value is an absolute value of a value related to 95 percent of the CDF relative to the power ratio.

公开(公告)号：US11716188B2

公开(公告)日：2023-08-01

申请号：US17505390

申请日：2021-10-19

Applicant: LG ELECTRONICS INC.

Inventor： Eunjong Lee ,  Jaehoon Chung ,  Genebeck Hahn ,  Jinmin Kim ,  Kukheon Choi ,  Kwangseok Noh ,  Sangrim Lee

IPC: H04L5/00 ,  H04L5/14 ,  H04L1/00 ,  H04W72/1273 ,  H04W72/23 ,  H04W72/04 ,  H04W52/34 ,  H04W72/0446

CPC classification number: H04L5/0087 ,  H04L1/00 ,  H04L5/001 ,  H04L5/0092 ,  H04L5/14 ,  H04W72/04 ,  H04W72/1273 ,  H04W72/23 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0053 ,  H04W52/34 ,  H04W72/0446

Abstract: A method for receiving downlink data by the terminal in a wireless communication system, includes receiving, from a base station, downlink control information for scheduling a short physical downlink shared channel (sPDSCH) on a short physical downlink control channel (sPDCCH), and receiving, from the base station, downlink data on the sPDSCH based on the downlink control information. Here, the sPDCCH and the sPDSCH are based on a first transmission time interval (TTI)-based radio frame structure, wherein the first TTI-based radio frame structure is shorter in time than a second TTI-based radio frame structure related to (i) a physical downlink shared channel (PDSCH) and (ii) a physical downlink control channel (PDCCH). Further, a number of resource element groups (REGs) consisting of a control channel element (CCE) related to the sPDCCH is smaller than a number of resource element groups (REGs) composed of a CCE related to the PDCCH.

公开(公告)号：US11695453B2

公开(公告)日：2023-07-04

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

CPC classification number: H04B7/0408 ,  H04B7/0413 ,  H04B7/0491 ,  H04B17/309

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.

公开(公告)号：US20220294564A1

公开(公告)日：2022-09-15

申请号：US17634196

申请日：2020-07-28

Applicant: LG ELECTRONICS INC.

Inventor： Taewon Song ,  Jeongki Kim ,  Jinsoo Choi ,  Suhwook Kim ,  Jinmin Kim ,  Sungjin Park ,  Insun Jang

IPC: H04L1/08 ,  H04L1/18

Abstract: The present specification proposes a method for resuming a PHY-level HARQ operation in a wireless local area network (WLAN) system. The method may include transmitting a resume signal including information related to resumption of hybrid automatic repeat request (HARQ) retransmission. The method may include transmitting a physical protocol data unit (PPDU) after transmitting the resume signal. The PPDU and the resume signal may be transmitted in different transmission opportunities (TXOPs).

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：US11272486B2

公开(公告)日：2022-03-08

申请号：US16717941

申请日：2019-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Eunjong Lee ,  Jaehoon Chung ,  Genebeck Hahn ,  Jinmin Kim ,  Kukheon Choi ,  Kwangseok Noh

IPC: H04W72/04 ,  H04W76/27 ,  H04L5/00 ,  H04W74/00 ,  H04W74/02 ,  H04W74/08 ,  H04L1/00 ,  H04W52/22 ,  H04W72/00 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

Abstract: The present invention relates to a wireless communication system. In detail, the present invention is a method for transmitting data to a base station (BS) by a user equipment (UE) includes: receiving information on a contention-based Physical Uplink Shared Channel (PUSCH) zone including a plurality of contention-based PUSCH resource blocks from the base station (BS); allocating at least one contention-based PUSCH resource block for transmission of the data based on the information on contention-based PUSCH zone; and transmitting the data to the base station (BS).

公开(公告)号：US11265193B2

公开(公告)日：2022-03-01

申请号：US16726144

申请日：2019-12-23

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Jinsoo Choi

IPC: H04L27/26 ,  H04L1/06 ,  H04B7/06 ,  H04L5/00 ,  H04W84/12

Abstract: The present specification discloses a method for transmitting and receiving a signal in a WLAN system, by a station, and a device therefor. More particularly, the present specification discloses, when a station transmits and receives a signal through a channel on which one or two channels are bonded, a method for constituting an enhanced directional multi gigabit (EDMG) short training field (STF) for an orthogonal frequency division multiplexing (OFDM) packet, and transmitting and receiving a signal comprising the constituted EDMG STF field, and a device therefor.

公开(公告)号：US11172474B2

公开(公告)日：2021-11-09

申请号：US16811757

申请日：2020-03-06

Applicant: LG ELECTRONICS INC.

Inventor： Eunjong Lee ,  Jaehoon Chung ,  Genebeck Hahn ,  Jinmin Kim ,  Kukheon Choi ,  Kwangseok Noh

IPC: H04W72/04 ,  H04W76/27 ,  H04L5/00 ,  H04W74/00 ,  H04W74/02 ,  H04W74/08 ,  H04L1/00 ,  H04W52/22 ,  H04W72/00 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

Abstract: A method for transmitting data by a user equipment (UE), includes configuring a Physical Uplink Shared Channel (PUSCH) configuration related to a physical random access channel (PRACH), wherein the PUSCH configuration includes parameters for a time interval for allocating PUSCH zones and a number of contiguous PUSCH zones in time domain, and transmitting the PRACH and a PUSCH based on the PUSCH configuration.