公开(公告)号：US10201019B2

公开(公告)日：2019-02-05

申请号：US15325427

申请日：2015-07-06

Applicant: LG ELECTRONICS INC.

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

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

Abstract: The present document relates to a backoff procedure and apparatus for efficiently accessing a broadband channel in a wireless LAN system. To this end, a station performs a clear channel assessment (CCA) operation in each of a plurality of channels, and when one or more of the plurality of channels is/are not used and the one or more channels is/are not used for frame transmission in the basic service set (BSS) of its/their station, the station is characterized in that it performs or re-performs a backoff procedure in the one or more channels. When a backoff counter value becomes zero according to the backoff procedure, the station may transmit a frame through the one or more channels.

公开(公告)号：US10172019B2

公开(公告)日：2019-01-01

申请号：US14913955

申请日：2014-09-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W24/02 ,  H04W74/08 ,  H04W52/38 ,  H04W52/36 ,  H04W52/50 ,  H04W84/12

Abstract: A method for transmitting data in a wireless LAN may comprise the steps of: receiving a non-target clear to send (CTS) frame from a second station (STA) by a first STA; transmitting a request to send (RTS) frame to a first access point (AP) coupled with the first STA within a network allocation vector (NAV) interval configured on the basis of the non-target CTS frame by the first STA; receiving a CTS frame in response to the RTS frame from the first AP by the first STA; and transmitting a first data frame to the first AP by the first STA.

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：US10104620B2

公开(公告)日：2018-10-16

申请号：US15315332

申请日：2015-02-06

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04L5/00 ,  H04W84/12

Abstract: Disclosed are a method and a device for operation based on a power save mode in a WLAN. The method for operation based on a power save mode in a WLAN may comprise steps in which: an STA receives an ACK frame from an AP in response to a PS-poll frame; after receiving the ACK frame, the STA receives a different BSS PPDU before receiving a downlink frame from the AP; and the STA determines whether or not to switch to a doze state from an awake state on the basis of the reception strength of the different BSS PPDU.

公开(公告)号：US10091726B2

公开(公告)日：2018-10-02

申请号：US15110688

申请日：2015-01-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04W84/12 ,  H04W52/02

Abstract: Disclosed are a method and an apparatus for operating based on a power save mode in a wireless LAN. The method for operating based on the power save mode in a wireless LAN may comprise the steps of: switching an STA from a sleep mode to an active mode after the STA has been switched to a power save mode based on a listen interval, to receive a first beacon frame transmitted by an AP; monitoring a frame for the STA transmitted by the AP until a timer started when the STA is switched to the active mode expires, when the first beacon frame indicates data buffered for the STA; and switching the STA to the sleep mode after the timer expires, wherein the timer can be reset when the frame is transmitted.

公开(公告)号：US10063359B2

公开(公告)日：2018-08-28

申请号：US15246104

申请日：2016-08-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04W84/12 ,  H04L5/00 ,  H04L1/16 ,  H04L1/00

Abstract: An ACK signal processing method that can be used in a wireless LAN system is proposed. Various information that can be used for a downlink MU PPDU for multiple receiving stations may be proposed, and, for example, in order to omit the re-transmission of the related art, information requesting an ACK or Block ACK corresponding to previously transmitted data may be included. If an immediate acknowledgement (ACK) frame fails to be received after the MU-PPDU is transmitted from the AP, a Block ACK may be requested. In this case, while a Block ACK is requested, a radio resource through which a Block ACK is delivered may be allocated.

公开(公告)号：US20180213558A1

公开(公告)日：2018-07-26

申请号：US15578420

申请日：2016-06-09

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho ,  Jinmin Kim

IPC: H04W74/08

CPC classification number: H04W74/08 ,  H04W74/006 ,  H04W84/12

Abstract: A method for managing a NAV (network allocation vector) by a station (STA) in a wireless communication LAN system according to an embodiment of the present invention comprises the steps of: receiving a frame including duration information; and changing a NAV timer of the STA on the basis of the duration information of the frame. When an event occurs for a reset of the NAV timer, the STA may determine whether to reset the NAV timer in consideration of the remaining time that existed in the NAV timer right before the NAV timer was changed.

公开(公告)号：US10034242B2

公开(公告)日：2018-07-24

申请号：US15324667

申请日：2015-06-10

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04L5/00 ,  H04W72/04 ,  H04L12/18 ,  H04W84/12

Abstract: Disclosed are a method and an apparatus for power save mode operation on the basis of a frame transmitted from another BSS in a wireless LAN. A method for operating an STA in a wireless LAN in a power save mode comprises: a step in which the STA receives a beacon frame from an AP, the beacon frame comprising a TIM element indicating downlink data pending in the STA; a step in which the STA transmits a PS-poll frame to the AP in response to the beacon frame; a step in which the STA receives, from the AP, an ACK frame transmitted by the AP in response to the PS-poll frame; and a step in which the STA determines the operation of the another BSS in a TXOP power save mode on the basis of the ACK frame.

公开(公告)号：US09999054B2

公开(公告)日：2018-06-12

申请号：US15060457

申请日：2016-03-03

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04B7/0413 ,  H04L1/00 ,  H04L5/00 ,  H04L29/08 ,  H04W48/12 ,  H04W84/12

CPC classification number: H04W72/0453 ,  H04B7/0413 ,  H04L1/0057 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0053 ,  H04L69/323 ,  H04W48/12 ,  H04W72/042 ,  H04W84/12

Abstract: A method and apparatus for transmitting a multi-user or multi-Station (multi-STA) radio frame including control information in a Wireless Local Area Network (WLAN) system are disclosed. The method includes generating a frame including a signaling field and a data field, and transmitting the generated frame to the plurality of STAs. The signaling field includes a first signaling field (a SIG A field) including control information for frame interpretation and a second signaling field (a SIG B field) including control information individually for each of the plurality of STAs, the second signaling field includes a first block including common control information for the plurality of STAs, and a second block including control information for each of the plurality of STAs.

公开(公告)号：US09974016B2

公开(公告)日：2018-05-15

申请号：US15113398

申请日：2014-11-20

Applicant: LG ELECTRONICS INC.

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

IPC: G08C17/00 ,  H04W52/02 ,  H04W84/12

CPC classification number: H04W52/0216 ,  H04W52/0225 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23

Abstract: A power save mode-based operation method and device in a wireless LAN are disclosed. The power save mode-based operation method and device in a wireless LAN can comprise the steps of: transmitting, by an STA, a first trigger frame to an AP in a first service interval; receiving, by the STA, a downlink frame transmitted by the AP on the basis of the first trigger frame in the first service interval; receiving, by the STA, traffic indication information from the AP in a second service interval after reception of the downlink frame; determining, by the STA, whether a pending downlink frame of the AP exists on the basis of the traffic indication information in the second service interval; and determining, by the STA, a mode for saving power on the basis of whether the pending downlink frame exists.