公开(公告)号：US10306667B2

公开(公告)日：2019-05-28

申请号：US15772799

申请日：2017-01-16

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W72/12 ,  H04L1/00 ,  H04L27/26 ,  H04W84/12 ,  H04L1/16 ,  H04B7/0452

Abstract: Disclosed is a method for transmitting an acknowledgement signal in response to downlink data by a station (STA) in a wireless local area network (WLAN) system. To this end, the STA receives a downlink physical protocol data unit (PPDU) including a control information subfield for uplink scheduling information and downlink data from an access point (AP) and transmits, to the AP, an uplink PPDU including an acknowledgement signal in response to the downlink data according to the uplink scheduling information. In this case, the control information subfield may include length information of the uplink PPDU, resource unit (RU) allocation information for the uplink PPDU, modulation and coding scheme (MCS) information for the uplink PPDU, transmit power of the AP, and target receive signal strength indicator (RSSI) information of the AP.

公开(公告)号：US10278172B2

公开(公告)日：2019-04-30

申请号：US15329211

申请日：2015-07-03

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L1/16 ,  H04L27/26 ,  H04W84/12 ,  H04W88/02

Abstract: Disclosed in the present invention are a method for transmitting a frame in a wireless communication system and a device therefor. Specifically, the method for transmitting a frame in a wireless communication system comprises a step in which a station (STA) transmits a frame comprising a legacy-short training field (L-STF), a legacy-long training field (L-LTF), and a signal (SIG) field, wherein the SIG field may comprise a trigger indication and a cascade indication, the trigger indication indicating whether the frame is a trigger frame comprising configuration information of an uplink multi-user (MU) data frame, and the cascade indication indicating whether the frame comprises a medium access control (MAC) frame.

公开(公告)号：US10278127B2

公开(公告)日：2019-04-30

申请号：US15502489

申请日：2015-02-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04W84/12 ,  H04W40/24 ,  H04W72/04 ,  H04L29/08

Abstract: Disclosed are a power save mode-based operating method and apparatus in a wireless LAN. The power save mode-based operating method in a wireless LAN comprises the steps of: receiving, by an STA, overheard BSS information from an AP; receiving, by the STA, a PPDU, wherein the PPDU includes information on a BSS having transmitted the PPDU; determining, by the STA, whether the overheard BSS information includes the information on the BSS; and switching an awake state to a doze state when the STA determines whether the overheard BSS information includes the information on the BSS, wherein the overheard BSS information can include the information on at least one overheard BSS for transmitting a frame enabled to be overheard by the AP.

公开(公告)号：US10205578B2

公开(公告)日：2019-02-12

申请号：US15695498

申请日：2017-09-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04L5/00 ,  H04W72/12 ,  H04L1/18 ,  H04W84/12 ,  H04L29/08 ,  H04W92/18 ,  H04L1/16

Abstract: A method and apparatus for a first station (STA) to transmit an acknowledgement (ACK) signal to a second STA in a wireless local area network (WLAN) are disclosed. For this end, the first STA receive a first type frame aggregated with a second type frame from the second STA, wherein the first type frame does not include a quality of service (QoS) control field while the second type frame includes the QoS control field. Then, the first STA transmits an ACK signal for the first type frame to the second STA based on an ACK policy of the QoS control field of the second type frame.

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：US10080240B2

公开(公告)日：2018-09-18

申请号：US15119346

申请日：2014-12-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04W74/08 ,  H04W52/14 ,  H04W72/04 ,  H04W84/12

CPC classification number: H04W74/0816 ,  H04W52/143 ,  H04W72/0453 ,  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.