公开(公告)号：US10602546B2

公开(公告)日：2020-03-24

申请号：US16115196

申请日：2018-08-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08 ,  H04W52/14 ,  H04W72/04 ,  H04W84/12

Abstract: A device and method for transmitting a frame in a wireless LAN, with the method including the steps of: transmitting, by an AP, an RTS frame for medium protection to a first STA set; receiving, by the AP, CTS frames, in sequence, from each of a plurality of STAs included in a second STA set in response to the RTS frame, the second STA set being included in the first STA set; and transmitting, by the AP, each of a plurality of PPDUs to each of the plurality of STAs via each of a plurality of subbands for each of the plurality of STAs on an overlapping time resource.

公开(公告)号：US10595341B2

公开(公告)日：2020-03-17

申请号：US15750820

申请日：2016-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W74/08 ,  H04W72/12 ,  H04W84/12

Abstract: A method for performing network allocation vector (NAV) operation by a station (STA) in a wireless LAN system, according to an embodiment of the present invention, comprises the steps of: receiving a first frame; and configuring NAV in accordance with basic service set (BSS) of the first frame, wherein the first frame is other BSS (OBSS) frame. If a received signal strength indicator (RSSI) is lower the OBSS packet detection (PD) level, an STA drops the OBSS frame without configuration of the NAV. And if second frame transmission of another STA following the OBSS frame is scheduled, the STA can defer the OBSS frame drop even if the RSSI is lower than the OBSS PD level.

公开(公告)号：US10582566B2

公开(公告)日：2020-03-03

申请号：US16358601

申请日：2019-03-19

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon Ryu ,  Suhwook Kim ,  Jinyoung Chun ,  Jeongki Kim ,  Giwon Park ,  Hangyu Cho

IPC: H04W84/12 ,  H04W28/02 ,  H04L12/801 ,  H04W72/04 ,  H04W74/00 ,  H04W74/08 ,  H04W88/10

Abstract: A method and an apparatus for triggering uplink data in a wireless LAN are disclosed. A method for receiving uplink data in a wireless LAN may comprise: a step in which an access point (AP) transmits a trigger frame for random connection; and a step in which the AP receives at least one buffer status report frame from at least one STA on a random connection transmission opportunity (TXOP) which is set on the basis of the trigger frame for random connection, wherein the random connection TXOP is allocated for a channel access attempt for transmitting the buffer status report frame of each of a plurality of non-specific STAs, and each of the at least one STA may be an STA which succeeds in the channel access among the plurality of non-specific STAs.

公开(公告)号：US10560962B2

公开(公告)日：2020-02-11

申请号：US15747751

申请日：2016-07-27

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Kiseon Ryu

IPC: H04W74/08 ,  H04W48/16 ,  H04W84/12

Abstract: In an embodiment of the present invention, a method for indicating, by an access point (AP) associated with a first basic service set (BSS), spatial reuse (SR) in a wireless LAN (WLAN) system includes transmitting a trigger frame which requests uplink multi-user (UL MU) transmission of a plurality of stations (STAs) and receiving an UL MU physical protocol data unit (PPDU) generated based on the trigger frame from the plurality of STAs. The trigger frame may include SR indication information for indicating the SR of an overlapping BSS (OBSS) STA. The first high efficiency (HE)-signal (SIG) A field of the UL MU PPDU may include SR support information generated based on the SR indication information.

公开(公告)号：US10536937B2

公开(公告)日：2020-01-14

申请号：US15533634

申请日：2015-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Hangyu Cho

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

Abstract: An AP downlink multi-user transmission method in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: generating a DL MU PPDU, wherein the DL MU PPDU comprises resource allocation information for uplink MU transmission by a station (STA); transmitting the DL MU PPDU to the STA; and, on the basis of the DL MU PPDU, receiving a UL MU PPDU generated by the STA, wherein the UL MU PPDU comprises a first part having a first IDFT/DFT cycle, and a second part having a second IDFT/DFT cycle that is four times the first IDFT/DFT cycle, wherein the first part may be received through at least one 20 MHz channel in a position corresponding to a frequency resource indicated by the resource allocation information, and the second part may be received by using the frequency resource indicated by the resource allocation information.

公开(公告)号：US10530524B2

公开(公告)日：2020-01-07

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.

公开(公告)号：US10477451B2

公开(公告)日：2019-11-12

申请号：US15582425

申请日：2017-04-28

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Kiseon Ryu ,  Hyunhee Park ,  Jeongki Kim ,  Hangyu Cho

IPC: H04W40/24 ,  H04W74/00 ,  H04W84/12 ,  H04W88/08 ,  H04W88/02

Abstract: According to an embodiment of the present specification, a method for accessing a wireless medium in a wireless local area network (LAN) system includes: receiving, by a wireless device, from an access point (AP) a packet including identification information indicating a receiving device which solicits a response frame, wherein the identification information is information included in a physical layer (PHY) header of the packet, the packet includes a broadcast frame, and the broadcast frame includes duration information indicating a time for deferring the access to the wireless medium; and if the wireless device is not the receiving device indicated by the identification information, setting, by the wireless device, a network allocation vector (NAV) on the basis of the duration information.

公开(公告)号：US10461901B2

公开(公告)日：2019-10-29

申请号：US15545664

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Proposed are a method and a device for transmitting a signal including a data field in a wireless LAN. For example, an access point (AP) allocates, to a second station, a second frequency band adjacent to a first frequency band, wherein the second frequency band can include a plurality of resource units. In addition, a signal including the data field can be transmitted to the second station through the allocated second frequency band. Furthermore, when the first frequency band is allocated to the first station, the AP can allocate, to the second station, as a null resource unit, a resource unit adjacent to the first frequency band among the plurality of resource units.

公开(公告)号：US10412744B2

公开(公告)日：2019-09-10

申请号：US15505471

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04J3/00 ,  H04W72/08 ,  H04L1/00 ,  H04L27/34 ,  H04L27/26 ,  H04W74/04 ,  H04W84/04 ,  H04L1/16 ,  H04L5/00

Abstract: A method is provided for transmitting data performed by a station (STA) device in a Wireless Local Area Network (WLAN) system. The STA device generates a Physical Protocol Data Unit (PPDU) including a physical preamble and a data field sequentially, and transmits the PPDU. The physical preamble includes sequentially a Legacy (L)-preamble and a High Efficiency (HE)-preamble. The HE-preamble includes sequentially an HE-Signal (SIG) A field, an HE-SIG B field, an HE-Short Training Field (STF) field, and an HE-Long Training Field (LTF) field, A first Inverse Discrete Fourier Transform (IDFT)/Discrete Fourier Transform (DFT) period is applied from the L-preamble to the HE-SIG B field and a second IDFT/DFT period is applied from the HE-STF field to the data field. The second IDFT/DFT period is 4 times of the first IDFT/DFT period. The HE SIG A field includes common control information and the HE-SIG B field includes user-specific information.

公开(公告)号：US10349288B2

公开(公告)日：2019-07-09

申请号：US15316138

申请日：2015-01-27

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon Ryu ,  Jeongki Kim ,  Giwon Park ,  Suhwook Kim ,  Hangyu Cho

IPC: H04W24/02 ,  H04L5/00 ,  H04W28/02 ,  H04W72/12 ,  H04W72/04 ,  H04W84/12

Abstract: A method and device for receiving a frame are disclosed. The method for receiving a frame over a wireless LAN may include: transmitting, by an access point (AP), an uplink transmission scheduling frame to a plurality of stations (STA); receiving, by the AP, a sync PPDU in response to the uplink transmission scheduling frame from each of the plurality of STAs; transmitting, by the AP, an adjustment frame, including adjustment information determined based on the sync PPDU, to the plurality of STAs; receiving, by the AP, the uplink frame transmitted based on the adjustment information by each of the plurality of STAs over an overlap time resource; and transmitting, by the AP, an ACK frame of the uplink frame to each of the plurality of STAs.