公开(公告)号：US10327204B2

公开(公告)日：2019-06-18

申请号：US15310078

申请日：2015-05-11

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04W74/06 ,  H04W84/12

Abstract: A method and a corresponding apparatus, for a power saving mode operation in a wireless LAN, the method including: an AP transmitting, on the basis of a virtual bitmap of a TIM element comprised in a beacon frame, a PS-poll request frame to a plurality of target STAs that have received the indication of the existence of pended downlink data; the AP receiving, on overlapped time resources, each of a plurality of PS-poll frames from each of a plurality of PS-poll transmission STAs that are indicated on the basis of the PS-poll request frame among the plurality of target STAs; and the AP, on the overlapped time resources, transmitting each of a plurality of downlink frames to each of the plurality of PS-poll transmission STAs as a response to each of the plurality of PS-poll frames.

公开(公告)号：US10284287B2

公开(公告)日：2019-05-07

申请号：US15567009

申请日：2016-04-29

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W74/08 ,  H04B7/26 ,  H04B7/0452 ,  H04L1/18 ,  H04W56/00 ,  H04L5/00

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：US10271377B2

公开(公告)日：2019-04-23

申请号：US15925663

申请日：2018-03-19

Applicant: LG ELECTRONICS INC.

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

IPC: H04W84/12 ,  H04L12/801 ,  H04W28/02 ,  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：US10225843B2

公开(公告)日：2019-03-05

申请号：US15410710

申请日：2017-01-19

Applicant: LG ELECTRONICS INC.

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

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

Abstract: The present specification suggests a signal processing method for changing an operating mode to configure a PPDU in a wireless local area network (WLAN) system. Specifically, a first station receives indication information indicating a change in operating mode that indicates a number of spatial streams and a receiving channel bandwidth that are supported by a second station from the second station. The first station transmits a block acknowledgement (BA) in response to the indication information, the BA including a first delay required bit. The first station defers applying the indication information so that the indication information is not applied when the first delay required bit is a predetermined value.

公开(公告)号：US10212731B2

公开(公告)日：2019-02-19

申请号：US15509149

申请日：2014-12-31

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/00 ,  H04W74/08

Abstract: Provided is a method and apparatus for protecting a TXOP in a wireless communication system. The method for protecting a TXOP may comprise the steps of: receiving a trigger frame containing information on a first interval for an exchange of multiple clear-to-send (CTS) frames from a transmission station (STA) by a reception STA; and transmitting CTS frames to the transmission STA in the first interval by the reception STA.

公开(公告)号：US10149279B2

公开(公告)日：2018-12-04

申请号：US15315650

申请日：2015-06-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/00 ,  H04W84/12 ,  H04L5/00 ,  H04W56/00 ,  H04W72/04 ,  H04W74/08 ,  H04L27/26

Abstract: A method by which an STA transmits a multi-user (MU) frame in a wireless communication system, according to one embodiment of the present invention comprises the steps of: receiving, from an access point (AP), a second downlink frame including time synchronization information and frequency synchronization information; adjusting a time synchronization and a frequency synchronization by using the time synchronization information and the frequency synchronization information; receiving a third downlink frame including MU frame allocation information; and transmitting the MU frame according to the MU allocation information, wherein the time synchronization information is determined by comparing, to a reference value, a difference of measurement values relating to frames exchanged prior to the reception of the second downlink frame, and the reference value is a common value among STAs related to a multi-user transmission.

公开(公告)号：US10128925B2

公开(公告)日：2018-11-13

申请号：US15505561

申请日：2015-08-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0452 ,  H04L29/08 ,  H04W74/00 ,  H04L1/06

Abstract: In the present invention, disclosed is a method for uplink multi-user transmission in a wireless communication system and an apparatus therefor. Specifically, a method for performing, by a station (STA), uplink (UL) multi-user (MU) transmission in a wireless communication system comprises the steps of: receiving, from an access point (AP), a trigger frame including information for UL MU transmission; and transmitting an UL MU PPDU on the basis of the information for UL MU transmission, wherein the trigger frame is a medium access control (MAC) frame, a MAC header of the trigger frame includes a type field and a subtype field, and the type of the trigger frame may be indicated by the type field and the subtype field.

公开(公告)号：US10075977B2

公开(公告)日：2018-09-11

申请号：US14909047

申请日：2014-08-14

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04W74/0816 ,  H04W74/004 ,  H04W74/006 ,  H04W84/12

Abstract: A method for transmitting data in wireless LAN may include the step of: receiving a non-target RTS frame from a second STA by a first STA, wherein the non-target RTS frame includes an RA field indicating a third STA; when the first STA does not receive a non-target CTS frame after a predetermined time and tries to transmit a data frame to an AP, transmitting an RTS frame to the AP by the first STA, wherein the non-target CTS frame is a response frame to the non-target RTS frame; and when the first STA has received a CTS frame in response to the RTS frame from the AP, transmitting the data frame to the AP by the first STA.

公开(公告)号：US10075269B2

公开(公告)日：2018-09-11

申请号：US15510212

申请日：2015-07-27

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04L5/0044 ,  H04B7/0452 ,  H04L1/0025 ,  H04L1/0075 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/26 ,  H04L27/2613 ,  H04L27/2628 ,  H04W84/12

Abstract: According to an embodiment of the present invention, a data transmission method for a station (STA) device in a wireless LAN (WLAN) system includes the steps of: generating a physical protocol data unit (PPDU) that includes a physical preamble and a data field; and transmitting the PPDU. Therein: the whole transmission band of the PPDU is made up of a plurality of resource units in a frequency region; each of the plurality of resource units is configured from a preset number of tones; resource units, from among the plurality of resource units, that have the same logical index are allocated to the same STA; and the resource units that have the same logical index may be discontinuously located in the frequency region.

公开(公告)号：US09942943B2

公开(公告)日：2018-04-10

申请号：US15505607

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04W84/12 ,  H04L47/10 ,  H04L47/12 ,  H04W28/021 ,  H04W28/0278 ,  H04W72/0413 ,  H04W74/004 ,  H04W74/085 ,  H04W74/0866 ,  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.