公开(公告)号：US20190174328A1

公开(公告)日：2019-06-06

申请号：US16322915

申请日：2017-07-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04W16/28 ,  H04W72/04 ,  H04L27/26

Abstract: The present specification discloses a method by which a station transmits/receives a signal in a wireless LAN (WLAN) system, and a device therefor. More particularly, disclosed are: a method for performing beamforming training for a plurality of channels and transmitting/receiving a signal on the basis of the beamforming training, when the station transmits/receives the signal through the plurality of channels; and a device therefor.

公开(公告)号：US20190124719A1

公开(公告)日：2019-04-25

申请号：US16091089

申请日：2017-04-04

Applicant: LG ELECTRONICS INC.

Inventor： Hyunhee PARK ,  Kiseon RYU ,  Suhwook KIM ,  Jeongki KIM ,  Hangyu CHO

IPC: H04W84/12 ,  H04W8/24 ,  H04W72/04 ,  H04W74/00 ,  H04B7/0452

Abstract: The present specification proposes a signal processing method for changing an operating mode for transmitting a PPDU in a wireless LAN system. Specifically, a first station receives, from the second station, indication information which indicates a change in an operating mode indicating a receiving channel bandwidth and a number of spatial streams supported by a second station during a TXOP interval. When the number of spatial streams and the receiving channel bandwidth decrease, the first station configures a PPDU for the second station by using the indication information after transmitting an ACK for the indication information. When the number of spatial streams and the receiving channel bandwidth increase, the first station configures a PPDU for the second station by using the indication information during a subsequent TXOP interval of the TXOP interval.

公开(公告)号：US20190052353A1

公开(公告)日：2019-02-14

申请号：US15567009

申请日：2016-04-29

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04B7/26 ,  H04B7/0452 ,  H04L5/00 ,  H04W56/00 ,  H04L1/18

Abstract: A method by which a station (STA) receives a Multi-STA BlockAck (M-BA) frame in a wireless LAN system supporting an OFDMA, according to one embodiment of the present invention, comprises the steps of: transmitting an uplink multi-user (ULMU) frame on the basis of a trigger frame; receiving an M-BA frame based on an OFDMA physical layer protocol data unit (PPDU) including an SIG B field; and acquiring a data stream including an ACK/NACK for the STA from the OFDMA PPDU-based M-BA frame, wherein the STA acquires the data stream according to an indication of a user field identified by a predetermined ID among a plurality of user fields included in the SIG B field, and the data stream indicated by the user field identified by the predetermined ID can be equally allocated to other STAs performing the UL MU transmission on the basis of the trigger frame.

公开(公告)号：US20190044778A1

公开(公告)日：2019-02-07

申请号：US16075584

申请日：2017-02-06

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Hangyu CHO

IPC: H04L27/26 ,  H04W84/12

Abstract: Provided are method and device for generating STF signals which can be used in a wireless LAN system. STF signals are comprised in a field which is used for improving AGC estimation of MIMO transmission. Some of the STF signals are used for uplink transmission and can be used for an uplink MU PPDU transmitted from a plurality of STAs. The provided STF signals are, for example, used for an 80+80 MHz or 160 MHz band and can be generated on the basis of a sequence in which a preset M sequence is repeated. The preset M sequence can be a 15-bit length binary sequence.

公开(公告)号：US20180359779A1

公开(公告)日：2018-12-13

申请号：US15774259

申请日：2017-04-26

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04W48/16

CPC classification number: H04W74/085 ,  H04W48/10 ,  H04W48/16 ,  H04W72/0446 ,  H04W74/006 ,  H04W74/008 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/14

Abstract: When an AP detects a collision between a neighbor BSS and a BSS color in a wireless LAN system, the AP can inform an STA of the same through information indicating whether the BSS color is disabled, and set and transmit a TXOP_duration field of a transmitted frame to a specific value differentiated from a normal duration value in order to prevent an erroneous NAV setting of the STA.

公开(公告)号：US20180359761A1

公开(公告)日：2018-12-13

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

CPC classification number: H04W72/085 ,  H04L5/00 ,  H04L27/2602 ,  H04W72/0413 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/046 ,  H04W72/121 ,  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：US20180343096A1

公开(公告)日：2018-11-29

申请号：US15563060

申请日：2016-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin KIM ,  Jeongki KIM ,  Dongguk LIM ,  Hangyu CHO

IPC: H04L5/00 ,  H04W52/24 ,  H04W72/04 ,  H04W74/08 ,  H04B7/0452 ,  H04W16/28

CPC classification number: H04L5/0055 ,  H04B7/0452 ,  H04L5/00 ,  H04L27/0006 ,  H04L27/26 ,  H04L27/2602 ,  H04W16/28 ,  H04W52/24 ,  H04W52/243 ,  H04W52/246 ,  H04W72/0473 ,  H04W74/0808 ,  H04W84/12

Abstract: Disclosed herein is a method for transmitting data performed by a station (STA) in a Wireless LAN (WLAN) system. The method for transmitting data performed by an STA device according to the present invention includes receiving a signal from a first STA of a first Basic Service Set (BSS); obtaining Endurable Interference Margin (EIM) information and transmission power information of the first STA from the reception signal; obtaining a Predicted Interference Power (PIP) using the transmission power information of the first STA; and comparing the EIM information with the PIP, and controlling a Clear Channel Assessment (CCA) level or a transmission power according to the comparison result.

公开(公告)号：US20180331795A1

公开(公告)日：2018-11-15

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 ,  H04W84/12 ,  H04B7/0417 ,  H04B7/0452

CPC classification number: H04L5/005 ,  H04B7/0417 ,  H04B7/0452 ,  H04L5/001 ,  H04W84/12

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：US20180323921A1

公开(公告)日：2018-11-08

申请号：US16033800

申请日：2018-07-12

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO ,  Eunsung PARK

IPC: H04L5/00

CPC classification number: H04L5/0025 ,  H04B7/0452 ,  H04L5/0053 ,  H04L5/0094 ,  H04L27/2613 ,  H04W84/12

Abstract: Proposed is a control field including allocation information regarding a resource unit (RU) in a wireless local area network (WLAN) system supporting a plurality of RUs. A data field may be transmitted in unit of the RU. For a case where two 106-RUs are arranged and a plurality of user stations (STAs) are multiplexed to the respective 106-RUs, a SIG-B field may be used to perform signaling. More specifically, the number of STAs to be multiplexed may be indicated by using first and second identification bits in a user-common field of the SIG-B field.

公开(公告)号：US20180262315A1

公开(公告)日：2018-09-13

申请号：US15762084

申请日：2016-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Hangyu CHO

IPC: H04L5/00

CPC classification number: H04L5/0055 ,  H04L1/1685 ,  H04L5/00 ,  H04W84/12 ,  H04W88/08

Abstract: The present document relates to a method and device for an Access Point (AP) to transmit ACK/NACK signals for MU (Multi-User) transmission data of a plurality of stations (STA) in a wireless LAN (WLAN) system. To this end, the method and device are characterized in that a STA responds to a trigger frame received from an AP, transmits data to the AP through an MU access technique, and sets an ACK policy value for data transmitted on the basis of the trigger frame to another value other than a first ACK policy value requesting an ACK signal transmission on the basis of a block ACK request.