公开(公告)号：US11039441B2

公开(公告)日：2021-06-15

申请号：US16712662

申请日：2019-12-12

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee

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

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：US10911193B2

公开(公告)日：2021-02-02

申请号：US15329227

申请日：2015-10-15

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Wookbong Lee ,  Jinsoo Choi ,  Hangyu Cho ,  Jiwon Kang ,  Kilbom Lee

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

Abstract: The present invention relates to a method for transmitting and receiving a Physical Protocol Data Unit (PPDU) and an apparatus for supporting the same. Particularly, a method for transmitting a Physical Protocol Data Unit (PPDU) performed by an apparatus in a wireless communication system may include generating a High Efficiency-Short Training Field (HE-STF) sequence in a frequency domain throughout a transmission bandwidth of the PPDU and transmitting the PPDU that includes an HE-STF field which is constructed based on the HE-STF sequence, wherein the HE-STF sequence may be mapped to a data tone except a direct current tone and a guard tone, and wherein a non-zero value may be mapped to all data tones that include a tone index which is a multiple of a predetermined value in the data tone.

公开(公告)号：US10826588B2

公开(公告)日：2020-11-03

申请号：US15567073

申请日：2016-04-15

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06 ,  H04L25/02 ,  H04L27/26 ,  H04L1/00 ,  H04L1/06 ,  H04B17/336 ,  H04L5/00 ,  H04W84/12

Abstract: According to an embodiment of present invention, a sounding method for an STA (Station) to transmit feedback information of a downlink (DL) channel state in a WLAN (Wireless LAN) system according to one embodiment of the present invention comprises receiving an NDPA (NDP announcement) frame that notifies of transmission of an NDP (Null Data Packet) frame, receiving the NDP frame, receiving a trigger frame including resource allocation information allocated to the STA, generating channel state information on the basis of a training field included in the NDP frame; and performing uplink (UL) multi-user (MU) transmission of the feedback frame including the channel state information by using a frequency resource indicated by the resource allocation information.

公开(公告)号：US10779264B2

公开(公告)日：2020-09-15

申请号：US15571797

申请日：2016-03-14

Applicant: LG ELECTRONICS INC.

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

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

Abstract: According to one embodiment of the present invention, an AP generates a frame including a signaling field and a data field so as to transmit the frame to one or more STAs, wherein: the signaling field includes a first signaling field having first common control information on the one or more STAs, and a second signaling field having individual control information for each of the one or more STAs; and the second signaling field includes a common field having second common control information on the one or more STAs, and individual fields having individual control information for each of the one or more STAs. In addition, if the frame is transmitted with a bandwidth of 40 MHz or more, the second signaling field transmits independent control information in two adjacent 20 MHz bands.

公开(公告)号：US10749659B2

公开(公告)日：2020-08-18

申请号：US16248432

申请日：2019-01-15

Applicant: LG ELECTRONICS INC.

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

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

Abstract: A method and apparatus for transmitting frames having a long training field (LTF) for a second type of station (STA) in a wireless communication system are provided. For this, STA prepares a frame having a first part for a first type of STA and a second part for the second type of STA; wherein the second part includes multiple LTFs, when the frame is used for MU (Multiple User) transmission scheme or OFDMA (Orthogonal Frequency Divisional Multiple Access) scheme. In case a first LTF having a first number of symbols length and a second LTF having a second number of symbols length, which is greater than the first number of symbols length, are used for the multiple LTFs, the first LTF is extended such that the first LTF and the second LTF have a same number of symbols length. The STA transmits the prepared frame to one or more STAs.

公开(公告)号：US10582497B2

公开(公告)日：2020-03-03

申请号：US16230496

申请日：2018-12-21

Applicant: LG ELECTRONICS INC.

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

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

Abstract: A method and a device for transmitting a frame in a wireless LAN are disclosed. A method for transmitting a data unit in a wireless LAN can comprise the steps of: transmitting, by an AP, an RTS frame for medium protection to a plurality of STAs through a plurality of channels; receiving, by the AP, a CTS frame in response to the RTS frame from each of the plurality of STAs through a first allocation channel, wherein the first allocation channel is at least one of the plurality of channels, which is determined on the basis of the RTS frame; and transmitting, by the AP, downlink data to each of the plurality of STAs through a second allocation channel on the basis of OFDMA in overlapped time resources, wherein the second allocation channel is at least one of the plurality of channels.

公开(公告)号：US10567046B2

公开(公告)日：2020-02-18

申请号：US15508344

申请日：2015-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Kilbom Lee ,  Wookbong Lee ,  Hangyu Cho ,  Jiwon Kang

IPC: H04B7/0452 ,  H04L5/00 ,  H04L27/26

Abstract: A method and device for transmitting a training field in a wireless LAN are disclosed. The method for transmitting a training field in a wireless LAN may include the steps of generating PPDUs to be respectively transmitted to a plurality of STAs by an AP, and respectively transmitting the PPDUs by the AP to the plurality of STAS respectively through a plurality of sub bands on an OFDMA-based overlapped time resource, wherein the PPDU may include the training field, the training field may be generated based on a training sequence, and the training sequence may be designed so that a non-null tone for AGC is included in a plurality of tone that corresponds to the plurality of sub bands, respectively.

公开(公告)号：US10548146B2

公开(公告)日：2020-01-28

申请号：US15566596

申请日：2016-04-15

Applicant: LG ELECTRONICS INC.

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

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

Abstract: An uplink (UL) sounding support method of a station (STA) for measuring a an UL channel state in a wireless local area network (WLAN) system, according to one embodiment of the present invention, comprises the steps of: receiving null data packet announcement (NDPA) information indicating an UL transmission of an the NDP frame; receiving trigger information indicating an UL MU transmission resource of the NDP frame; and UL multi-user (MU)-transmitting the NDP frame using the UL MU transmission resource indicated by the trigger information, wherein the trigger information may comprise at least one of spatial resource information or the frequency resource information to be used for the UL MU transmission of the NDP frame.

公开(公告)号：US10454733B2

公开(公告)日：2019-10-22

申请号：US15516773

申请日：2015-10-05

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Jinsoo Choi ,  Wookbong Lee ,  Hangyu Cho ,  Jiwon Kang

IPC: H04L27/26 ,  H04W84/12

Abstract: Disclosed is a sequence generation method for: generating a basic sequence structure comprising C52, which is composed of 52 tones, and D12, which is composed of 12 tones; selecting any one among a plurality of phase rotation factors, which are determined in advance for a bandwidth and applied to the basic sequence structure by unit of C52 or C52D12; and generating a sequence inserted into a preamble to be transmitted to a terminal.

公开(公告)号：US10432354B2

公开(公告)日：2019-10-01

申请号：US15532049

申请日：2015-05-19

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Kiseon Ryu ,  Jinyoung Chun ,  Wookbong Lee ,  Jeongki Kim ,  Hangyu Cho

IPC: H04L1/00 ,  H04L1/16 ,  H04L5/00 ,  H04W72/04 ,  H04L21/00 ,  H04W84/12 ,  H04L1/12

Abstract: Disclosed are a method and a device for recovering an error without the retransmission of a data frame in a wireless LAN. The method for recovering an error in a wireless LAN may comprise the steps in which: a sender STA transmits a data frame to a receiver STA; if the sender STA does not receive a block ACK frame of the data frame from the receiver STA, the sender STA determines the reason for the non-reception of the data frame; if the sender STA determines that the reason for the non-reception of the data frame is the failure of transmission of the block ACK frame after the receiver STA receives the data frame, the sender STA transmits a PBAR data frame to the receiver STA; and the sender STA receives a PBAR block ACK frame from the receiver STA as a response to the PBAR data frame.