公开(公告)号：US20200266858A1

公开(公告)日：2020-08-20

申请号：US16867097

申请日：2020-05-05

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong YUN ,  Jinmin KIM ,  Sungjin PARK ,  Jinsoo CHOI

IPC: H04B7/0417 ,  H04B7/0452 ,  H04B7/06

Abstract: Proposed are a method and apparatus for transmitting a feedback frame in a wireless local area network (WLAN) system. Specifically, a first STA generates the feedback frame based on multi user (MU)-multi input multi output (MIMO) beamforming. The first STA transmits the feedback frame to a second STA. The feedback frame includes information related to a feedback subcarrier for a predetermined frequency band and a beamforming report field for the MU-MIMO beamforming. The feedback subcarrier includes a first subcarrier transmitted first in the feedback subcarrier and a second subcarrier of which a subcarrier index is determined based on a grouping value related to a subcarrier spacing. The beamforming report field includes a first signal to noise ratio (SNR) for the first subcarrier and a first differential SNR for the second subcarrier. The first differential SNR is an SNR difference between adjacent subcarriers included in the feedback subcarrier.

公开(公告)号：US20200213986A1

公开(公告)日：2020-07-02

申请号：US16818712

申请日：2020-03-13

Applicant: LG ELECTRONICS INC.

Inventor： Saehee BANG ,  Jinmin KIM ,  Jinsoo CHOI

IPC: H04W72/04 ,  H04B7/06 ,  H04W16/28 ,  H04B7/0491

Abstract: Provided are a method for beamforming training and an apparatus using the same. An STA receives a beacon frame from an AP during a BTI. The STA transmits SSW frames during an A-BFT. The beacon frame comprises an A-BFT length indicating the number of a plurality of SSW slots included in the A-BFT, a FSS field indicating the number of the SSW frames allowed in one SSW slot among the plurality of SSW slots, and information about the type of the SSW frames used in one SSW slot. The information about the type of the SSW frames indicates that the SSW frames are determined to be one from among first type SSW frames and second type SSW frames. The second type SSW frames have a smaller size than that of the first type SSW frames. If the SSW frames are determined to be the second type SSW frames, the FSS field indicates the number of the second type SSW frames that can be transmitted in one SSW slot.

公开(公告)号：US20200100261A1

公开(公告)日：2020-03-26

申请号：US16695686

申请日：2019-11-26

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Kyungtae JO ,  Jinmin KIM ,  Eunsung PARK ,  Hangyu CHO

IPC: H04W72/12 ,  H04W72/04 ,  H04W84/12 ,  H04L5/00

Abstract: A method of receiving a signal by a station (STA) in a wireless local area network (WLAN) system includes receiving, from an access point (AP), an extended scheduling element for allocating one channel that not being a primary channel of the WLAN system among a plurality of channels used for a channel bonding in the WLAN system; and receiving, from the AP, the signal via the one channel, based on the extended scheduling element.

公开(公告)号：US20200068432A1

公开(公告)日：2020-02-27

申请号：US16489287

申请日：2018-02-27

Applicant: LG ELECTRONICS INC.

Inventor： Saehee BANG ,  Jeongki KIM ,  Jinmin KIM ,  Jinsoo CHOI

IPC: H04W28/04 ,  H04L1/18 ,  H04L1/16

Abstract: A method for frame retransmission performed by a first wireless terminal in a wireless LAN system comprises the steps of: dividing an MSDU received from an upper layer of a first wireless terminal into multiple MPDUs; transmitting the multiple divided MPDUs to a second wireless terminal, wherein each of the multiple divided MPDUs includes division information and transmission sequence information; if an ACK frame for notifying of successful reception of the multiple divided MPDUs is not received until a preset time elapses, transmitting, to the second wireless terminal, a BAR frame for determining at least one MPDU to be retransmitted by the first wireless terminal among the multiple divided MPDUs; receiving a BA frame from the second wireless terminal in response to the BAR frame, wherein the BA frame includes frame information indicating a last MPDU successfully received by the second wireless terminal among the multiple divided MPDUs; and performing a retransmission procedure on the basis of the frame information.

公开(公告)号：US20190289576A1

公开(公告)日：2019-09-19

申请号：US16300519

申请日：2017-05-11

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Kyungtae JO ,  Jinmin KIM ,  Hangyu CHO ,  Kiseon RYU

IPC: H04W72/04 ,  H04W74/08

Abstract: The application relates to a method for transmitting and receiving, by a station, signals in a wireless LAN system and, more specifically, to a method for, when a station in a wireless LAN system is assigned one or more channels which do not include a primary channel on the system, setting and updating a network allocation vector (NAV) value applied to the one or more allocated channels, a method for transmitting and receiving signals on the basis of the same, and an apparatus therefor.

公开(公告)号：US20190273535A1

公开(公告)日：2019-09-05

申请号：US16464252

申请日：2019-02-11

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong YUN ,  Jinmin KIM ,  Sungjin PARK ,  Jinsoo CHOI

IPC: H04B7/0417 ,  H04W72/04 ,  H04B7/06 ,  H04B7/0456 ,  H04L5/00

Abstract: Provided are a method and apparatus for transmitting a feedback frame by performing multi input multi output (MIMO) beamforming procedure in a wireless local area network (WLAN) system. Specifically, a first station (STA) generates the feedback frame based on the MIMO beamforming procedure. The first STA transmits the feedback frame to a second STA. The feedback frame includes a feedback subcarrier for a predetermined frequency band. A first subcarrier transmitted first in the feedback subcarrier and a second subcarrier having subcarrier indices −2 and 2 are statically transmitted. The first subcarrier is configured as a left edge subcarrier or right edge subcarrier of the predetermined frequency band. A subcarrier index of a third subcarrier included in the feedback subcarrier is determined based on a grouping value which is a subcarrier interval. The third subcarrier is a subcarrier excluding the first subcarrier and the second subcarrier from the feedback subcarrier. The grouping value is dynamically changed based on channel state information.

公开(公告)号：US20190200388A1

公开(公告)日：2019-06-27

申请号：US16317808

申请日：2017-07-14

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Jinmin KIM ,  Hangyu CHO ,  Kyungtae JO

IPC: H04W74/08 ,  H04W72/04

CPC classification number: H04W74/0816 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00 ,  H04W84/12

Abstract: The present specification relates to a method for transmitting or receiving data by a station in a wireless LAN (WLAN) system and, more particularly, presents a method and device for transmitting or receiving data on the basis of a beamforming training method for a plurality of channels, when a station transmits the data by using the plurality of channels.

公开(公告)号：US20190191331A1

公开(公告)日：2019-06-20

申请号：US16322101

申请日：2018-03-12

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Jinmin KIM ,  Jinsoo CHOI

IPC: H04W28/06 ,  H04L1/00 ,  H04L27/26

CPC classification number: H04W28/06 ,  H04L1/00 ,  H04L1/0003 ,  H04L27/18 ,  H04L27/2626 ,  H04W84/12

Abstract: Disclosed in the present specification are a method for transmitting and receiving a signal including a physical protocol data unit (PPDU) in a wireless LAN (WLAN) system and an apparatus therefor. Specifically, disclosed in the present specification are a method for transmitting and receiving a signal and an apparatus therefor, which, in a PPDU supported by a specific wireless LAN system, can minimize an overall length error (also known as “spoofing error”) of the PPDU that is assumed to occur between a station capable of decoding all fields in the PPDU and a station capable of decoding only some fields in the PPDU.

公开(公告)号：US20190190754A1

公开(公告)日：2019-06-20

申请号：US16329185

申请日：2017-12-14

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin KIM ,  Jinsoo CHOI

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

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：US20190173636A1

公开(公告)日：2019-06-06

申请号：US16322284

申请日：2018-03-27

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong YUN ,  Jinmin KIM ,  Sungjin PARK ,  Jinsoo CHOI

IPC: H04L5/00 ,  H04L27/26

Abstract: The present specification suggests a method for transmitting and receiving a signal, by a station, in a wireless LAN (WLAN) system supporting a maximum of eight space time streams, and an apparatus therefor. More specifically, the present specification suggests a method for transmitting and receiving a signal including a pilot sequence for 2 channel bonding per each space time stream when a station transmits and receives a signal through a channel in which two channels are bonded, and an apparatus therefor.