公开(公告)号：US10587381B2

公开(公告)日：2020-03-10

申请号：US16030744

申请日：2018-07-09

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Wookbong Lee ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho ,  Suhwook Kim

IPC: H04L5/00 ,  H04B7/0417 ,  H04W84/12 ,  H04B7/0452

Abstract: A method and apparatus for transmitting a frame on the basis of a sounding procedure is disclosed. The method for transmitting the frame on the basis of a sounding procedure in a wireless LAN may comprise the steps of: transmitting an NDPA frame to each of multiple STAs by an AP wherein the NDPA frame notifies of the transmission of NDP; transmitting the NDP to each of the multiple STAs by the AP; receiving, by the AP, multiple feedback frames transmitted through multiple transmission sources allocated to the multiple STAs in time sources overlapped by the multiple STAs, respectively; and transmitting, by the AP, multiple downlink frames to the multiple STAs respectively.

公开(公告)号：US10575280B2

公开(公告)日：2020-02-25

申请号：US15537356

申请日：2015-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Wookbong Lee ,  Hangyu Cho

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/18 ,  H04L27/26 ,  H04W84/12

Abstract: Disclosed is an uplink (UL) multi-user (MU) transmission method of a station (STA) in a wireless LAN (WLAN) system. An UL MU transmission method of an STA in a WLAN system according to an embodiment of the present invention includes receiving a trigger frame including resource unit allocation information for orthogonal frequency division multiple access (OFDMA) transmission, sending an UL MU physical protocol data unit (PPDU) based on the resource unit allocation information, and receiving an ACK frame for the UL MU PPDU.

公开(公告)号：US10476648B2

公开(公告)日：2019-11-12

申请号：US15316823

申请日：2015-01-28

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Kiseon Ryu ,  Wookbong Lee ,  Jeongki Kim

IPC: H04L5/00 ,  H04B7/26 ,  H04L27/26 ,  H04W72/04 ,  H04W74/08 ,  H04W84/12 ,  H04W74/00

Abstract: Disclosed are a method and apparatus for transmitting a frame. A method for transmitting a frame in a wireless LAN comprises the steps of: an AP transmitting a first RTS frame, through a primary channel, to a plurality of first target STAs; the AP receiving, from one target STA from among the plurality of first target STAs, a first CTS frame as a response to the first RTS frame, through the primary channel; and the AP transmitting, to the plurality of first target STAs, a plurality of pieces of first downlink data for each of the respective plurality of first target STAs, through a plurality of first subbands included in the primary channel on one first data frame, wherein a first RTS frame may include identification information for each of the plurality of first target STAs.

公开(公告)号：US10469230B2

公开(公告)日：2019-11-05

申请号：US15558950

申请日：2016-03-14

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Wookbong Lee ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04L5/00 ,  H04L27/26 ,  H04L29/08 ,  H04W72/04 ,  H04W84/12

Abstract: A method for transmitting a PPDU of an STA device, including generating an HE-STF sequence, generating a PPDU configured on the basis of the HE-STF sequence and including an HE-STF field having periodicity of 1.6 μs, and transmitting the PPDU such that the HE-STF field included in the PPDU is transmitted via a channel, wherein the HE-STF sequence is configured on the basis of an M sequence, and when the channel is a 20 MHz channel, the HE-STF sequence may be configured to have a structure of {the M Sequence, 07, 0, 0, 0, 0, 0, 0, the M sequence}, when the channel is a 40 MHz channel, the HE-STF sequence may be configured on the basis of a structure in which the HE-STF sequence of the 20 MHz channel is duplicated twice and frequency-shifted, and when the channel is a 80 MHz channel, the HE-STF sequence may be configured on the basis of a structure in which the HE-STF sequence of the 40 MHz channel is duplicated twice and frequency-shifted.

公开(公告)号：US10348460B2

公开(公告)日：2019-07-09

申请号：US15525014

申请日：2015-08-04

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinyoung Chun ,  Wookbong Lee ,  Hangyu Cho ,  Eunsung Park

IPC: H04L5/00 ,  H04B7/0452 ,  H04L27/26 ,  H04W84/12 ,  H04W88/08 ,  H04B7/0413

Abstract: Disclosed is a method for transmitting, by a first station, a frame in a wireless LAN system, and a station device therefor. To this end, a station generates a radio frame for a second type station comprising a frame portion for a first type station and a frame portion for the second type station, wherein the frame portion for the second type station comprises a signal field, a short training field (STF), a long training field (LTF), and a data field, the LTF having a symbol duration that is two or four times longer than the symbol duration of the frame portion for the first type station, and the signal field comprising information about the symbol duration of the LTF for the second type station.

公开(公告)号：US10278172B2

公开(公告)日：2019-04-30

申请号：US15329211

申请日：2015-07-03

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Wookbong Lee ,  Hangyu Cho

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L1/16 ,  H04L27/26 ,  H04W84/12 ,  H04W88/02

Abstract: Disclosed in the present invention are a method for transmitting a frame in a wireless communication system and a device therefor. Specifically, the method for transmitting a frame in a wireless communication system comprises a step in which a station (STA) transmits a frame comprising a legacy-short training field (L-STF), a legacy-long training field (L-LTF), and a signal (SIG) field, wherein the SIG field may comprise a trigger indication and a cascade indication, the trigger indication indicating whether the frame is a trigger frame comprising configuration information of an uplink multi-user (MU) data frame, and the cascade indication indicating whether the frame comprises a medium access control (MAC) frame.

公开(公告)号：US10257837B2

公开(公告)日：2019-04-09

申请号：US15508877

申请日：2015-04-07

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Wookbong Lee ,  Hangyu Cho ,  Jinyoung Chun ,  Jinsoo Choi ,  Eunsung Park

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/00 ,  H04L27/26 ,  H04L5/00 ,  H04W84/12

Abstract: The present invention relates to a method for transmitting a frame in a wireless communication system, in particular, a high density wireless LAN system, and a station apparatus for performing the same. To this end, a station for transmitting a frame configures a radio frame for a second type station, including a frame part for a first type station and a frame part for the second type station, wherein the frame part for the second type station includes a first signaling field (SIG A) for the second type station and a second signaling field (SIG B) for the second type station. The SIG A for the second type station includes modulation and coding scheme (MCS) information applied to the SIG B for the second type station, and the MCS level applied to the SIG B for the second type station supports an MCS having level than the lowest MCS level defined for the first type station.

公开(公告)号：US10251177B2

公开(公告)日：2019-04-02

申请号：US16108016

申请日：2018-08-21

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee

IPC: H04W72/04 ,  H04W84/12 ,  H04L5/00 ,  H04W72/08

Abstract: Disclosed is a method and apparatus for allocating a wireless resource in order to prevent interference in a wireless LAN. A method for allocating a wireless resource in a wireless LAN may comprise the steps of: allocating, by an AP, a plurality of wireless resources for a plurality of STAs included in a BSS, in the entire bandwidth, respectively; and transmitting, by the AP, a PPDU to the plurality of STAs through the plurality of wireless resources, respectively, wherein each of the plurality of wireless resources is a combination of a plurality of wireless units defined in different sizes on a frequency axis, and each of the plurality of wireless resources can be determined in consideration of the size of the bandwidth of at least one STA supporting a bandwidth smaller than the size of the entire bandwidth from among the plurality of STAs.

公开(公告)号：US10136450B2

公开(公告)日：2018-11-20

申请号：US15328858

申请日：2015-07-28

Applicant: LG ELECTRONICS INC.

Inventor： Wookbong Lee ,  Kiseon Ryu ,  Jeongki Kim ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04W74/00 ,  H04W74/08 ,  H04W84/12 ,  H04L5/00

Abstract: An embodiment of the present invention relates to a method for performing a clear channel assessment (CCA) by STA in a wireless communication system, the method comprising the steps of: receiving a frame including a coloring bit; changing a CCA level to a first level when the coloring bit indicates a basic service set (BSS) to which the STA belongs, and changing a CCA level to a second level when the coloring bit indicates a BSS to which the STA does not belong; and performing the CCA according to the first level or the second level, wherein when the frame has an OFDM-based format, the frame includes a coloring disable bit, and when the coloring disable bit indicates that the frame is a multiuser transmission-related trigger frame, the STA does not perform a change of the CCA level without regard to information indicated by the coloring bit.

公开(公告)号：US10097250B2

公开(公告)日：2018-10-09

申请号：US15302924

申请日：2015-03-24

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Jinyoung Chun ,  Wookbong Lee ,  Dongguk Lim ,  Hangyu Cho

IPC: H04B7/0452 ,  H04L27/26 ,  H04L5/00 ,  H04B1/02 ,  H04L29/08 ,  H04W84/12

Abstract: Provided are a method for transmitting data and a device using the same in a wireless LAN. A transmitter transmits a physical layer protocol data unit (PPDU) in a transmission bandwidth. The PPDU includes a first part to which a first fast Fourier transform (FFT) size is applied, and a second part to which a second FFT size is applied. The number of pilots of the second part is identical to the number of pilots of the first part, and the pilot frequency location of the second part is identical to the pilot frequency location of the first part.