公开(公告)号：US09924541B2

公开(公告)日：2018-03-20

申请号：US15125074

申请日：2015-01-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08 ,  H04W88/08 ,  H04W84/12 ,  H04H20/12 ,  H04L27/26 ,  H04L12/26 ,  H04W52/30 ,  H04L29/08

CPC classification number: H04W74/0816 ,  H04H20/12 ,  H04L27/2628 ,  H04L43/16 ,  H04L69/323 ,  H04W52/30 ,  H04W84/12

Abstract: Disclosed are a method and an apparatus for transmitting a frame in a wireless LAN. The method for transmitting a frame in a wireless LAN may comprise: a step in which an AP transmits an RTS frame for protecting a medium to an STA; a step in which the AP receives a CTS frame from the STA in response to the RTS frame; and a step in which the AP transmits a data frame to the STA in response to the CTS frame, wherein the RTS frame is included in a first PPDU which is generated on the basis of a first IFFT size, the data frame is included in a second PPDU which is generated on the basis of a second IFFT size, the second IFFT size is greater than the first IFFT size, and the data frame can be transmitted on the basis of a transmission-range-determining parameter which is determined on the basis of the difference between the second IFFT size and the first IFFT size.

公开(公告)号：US09918278B2

公开(公告)日：2018-03-13

申请号：US15108768

申请日：2015-01-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04W84/12

CPC classification number: H04W52/0235 ,  H04W52/0216 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

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: an STA receiving, from an AP, a beacon frame from a beacon frame time resource for the beacon frame, wherein a TIM included in the beacon frame indicates pending downlink data for the STA; the STA maintaining a sleep mode after receiving the beacon frame and until a monitoring start time resource for the downlink frame for delivering downlink data; and the STA receiving, from the AP, the downlink frame from a listen window including the monitoring start time resource.

公开(公告)号：US09906937B2

公开(公告)日：2018-02-27

申请号：US15035473

申请日：2014-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Dongcheol Kim ,  Hangyu Cho ,  Suhwook Kim ,  Byungjoo Lee

IPC: H04W8/00 ,  H04W56/00 ,  H04W52/02 ,  H04W84/18 ,  H04W84/12 ,  H04W88/02 ,  H04W84/20

CPC classification number: H04W8/005 ,  H04W52/0229 ,  H04W56/002 ,  H04W84/12 ,  H04W84/18 ,  H04W84/20 ,  H04W88/02 ,  Y02D70/1224 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22

Abstract: An embodiment of the present invention relates to a method for changing the state of a neighbor awareness networking (NAN) terminal in a wireless communication system, the method comprising the steps of: receiving a synchronization beacon frame from less than three terminals, within a discovery window; and changing the state on the basis of anchor master information of the synchronization beacon frame, wherein a received signal strength indication (RSSI) of the synchronization beacon frame is between a first value and a second value, and if an anchor master rank value included in the synchronization beacon frame is greater than that stored in the terminal, the terminal converts the state from an asynchronous state to synchronous state.

公开(公告)号：US09883535B2

公开(公告)日：2018-01-30

申请号：US14890142

申请日：2014-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Giwon Park ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W74/08 ,  H04W72/10 ,  H04W84/12

CPC classification number: H04W74/0833 ,  H04W72/10 ,  H04W74/085 ,  H04W84/12

Abstract: Disclosed are a channel access method and an apparatus therefor. A channel access method in a wireless LAN includes the steps of determining whether an STA (station) changes a first access category for a probe request frame; and if a first access category is changed to a second access category, performing a back-off process for enabling the STA to transmit the probe request frame based on the second access category, wherein the second access category may have a lower priority than the first access category.

公开(公告)号：US20170366321A1

公开(公告)日：2017-12-21

申请号：US15536313

申请日：2015-12-23

Applicant: LG Electronics Inc.

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

IPC: H04L5/00 ,  H04L1/16

CPC classification number: H04L5/0055 ,  H04L1/1614 ,  H04L1/1671 ,  H04L1/1685 ,  H04L2001/0093

Abstract: The present document relates to a method for transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal for transmission data of a plurality of stations (STAs) by an access point (AP) in a wireless LAN (WLAN) system, and an apparatus therefor. To this end, the AP transmits a trigger frame to the plurality of STAs, and on receiving data from the plurality of STAs in response to the trigger frame, transmits ACK/NACK signals for the data received from the plurality of STAs through a multiuser block ACK frame (M-BA frame). Here, the M-BA frame includes ACK/NACK signals for STAs, the number of which is determined so as not to exceed a specific transmission unit time, among the ACK/NACK signals for the plurality of STAs, and the AP additionally transmits ACK/NACK signals to one or more STAs, to which ACK/NACK signals have not been transmitted through the M-BA, among the plurality of STAs.

公开(公告)号：US09848411B2

公开(公告)日：2017-12-19

申请号：US14358686

申请日：2012-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Dongcheol Kim ,  Jiwoong Jang ,  Hangyu Cho ,  Hyunwoo Lee

IPC: H04W72/04 ,  H04B7/26 ,  H04L5/00 ,  H04W52/32 ,  H04W52/14 ,  H04W52/40

CPC classification number: H04W72/0413 ,  H04B7/2656 ,  H04L5/001 ,  H04L5/0053 ,  H04W52/146 ,  H04W52/325 ,  H04W52/40 ,  H04W72/0446

Abstract: A method for transmitting an uplink control channel by a terminal in a wireless communication system that supports a plurality of serving cells for the terminal, comprises a step of receiving information on a plurality of serving cells include a P-cell and at least one S-cell constructed for the terminal and timing division duplex (TDD) downlink/uplink setup information for each of the plurality of serving cells, and a step of, in case of transmitting the plink control channel via a specific subframe interval, transmitting the uplink control channel through a first S-cell allocated as an uplink subframe with respect to the specific subframe interval when it is determined, based on the TDD downlink/uplink setup information, that the specific subframe interval is allocated as a downlink subframe with respect to the P-cell.

公开(公告)号：US09830619B2

公开(公告)日：2017-11-28

申请号：US14417056

申请日：2013-11-05

Applicant: LG ELECTRONICS INC.

Inventor： Wookbong Lee ,  Byungjoo Lee ,  Dongcheol Kim ,  Hangyu Cho ,  Jinho Kim

IPC: H04W48/16 ,  G06Q30/02 ,  H04L29/08 ,  H04W92/18 ,  H04W76/02 ,  H04W84/12

CPC classification number: G06Q30/0267 ,  G06Q30/0277 ,  H04L67/16 ,  H04W48/16 ,  H04W76/14 ,  H04W84/12 ,  H04W92/18

Abstract: The present invention relates to a wireless communication system, and a method for searching for or advertising a service and a device for the same. A method for searching for a service, according to one embodiment of the present invention, can comprise: transmitting a probe request frame to search for a device supporting a predetermined service desired by a first wireless device; receiving a probe response frame from a second wireless device supporting the predetermined service; transmitting, by the first wireless device, a service search request frame including a service name of the predetermined service to the second wireless device; and receiving a service search response frame from the second wireless device, wherein the service search response frame can include service status information indicating whether the predetermined service is available on the second wireless device.

公开(公告)号：US09814001B2

公开(公告)日：2017-11-07

申请号：US15353405

申请日：2016-11-16

Applicant: LG ELECTRONICS INC.

Inventor： Dongcheol Kim ,  Seunghee Han ,  Hangyu Cho ,  Hyunwoo Lee

IPC: H04W52/36 ,  H04W52/32 ,  H04W52/34 ,  H04W74/08 ,  H04W52/14 ,  H04W52/50 ,  H04W28/12 ,  H04W72/04 ,  H04W52/24 ,  H04L5/00 ,  H04W56/00 ,  H04W88/02

CPC classification number: H04W52/367 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04W28/12 ,  H04W52/146 ,  H04W52/243 ,  H04W52/325 ,  H04W52/34 ,  H04W52/346 ,  H04W52/50 ,  H04W56/0045 ,  H04W72/0413 ,  H04W72/0473 ,  H04W72/048 ,  H04W74/0833 ,  H04W88/02

Abstract: Disclosed are a terminal device for controlling uplink signal transmission power, and a method therefore. The present invention relates to a method and terminal device for controlling uplink transmission power, wherein the method, in which a terminal that communicates with cells of each timing alignment (TA) group controls uplink transmission power in the event a plurality of TA groups including one or more cells exists in a wireless communication system, comprises: a step of determining the uplink transmission power for at least one channel in the event at least two channels from among a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH) including a plurality of pieces of uplink control information (UCI), a PUSCH including no UCI, a physical random access channel (PRACH), and a sounding reference signal (SRS) are simultaneously transmitted in the same subframe in each specific cell of the plurality of TA groups; and a step of transmitting said at least one channel with the determined uplink transmission power, wherein said uplink transmission power is determined in consideration of a TA group index.

公开(公告)号：US09807677B2

公开(公告)日：2017-10-31

申请号：US14652748

申请日：2013-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Byungjoo Lee ,  Hangyu Cho

IPC: H04W48/14 ,  H04W8/18 ,  H04L29/08 ,  H04W84/12 ,  H04W48/16

CPC classification number: H04W48/14 ,  H04L67/1061 ,  H04L67/16 ,  H04W8/186 ,  H04W48/16 ,  H04W84/12

Abstract: The present invention relates to a wireless communication system, and more particularly, to a service discovery method and device in a wireless LAN system. A service discovery method in a wireless LAN system according to one embodiment of the present invention can comprise: transmitting, by a request device, a service discovery request frame to a response device; and receiving, by the request device, a service discovery response frame, which comprises service information of the response device and service information of each of one or more other devices, from the response device. The one or more other devices can comprise a device which does not belong to the same group as the response device.

公开(公告)号：US09806783B2

公开(公告)日：2017-10-31

申请号：US15406598

申请日：2017-01-13

Applicant: LG ELECTRONICS INC.

Inventor： Sanggook Kim ,  Kyungtae Jo ,  Hangyu Cho

IPC: H04B1/00 ,  H04B15/00 ,  H04B7/06 ,  H01Q3/12 ,  H01Q3/10 ,  H01Q3/30 ,  H01Q3/24 ,  H04W28/16 ,  H04W84/04 ,  H01Q3/00 ,  H04M1/00

CPC classification number: H04B7/0604 ,  H01Q3/005 ,  H01Q3/10 ,  H01Q3/12 ,  H01Q3/24 ,  H01Q3/30 ,  H04B7/0408 ,  H04B7/0617 ,  H04W28/16 ,  H04W84/042 ,  H04W84/12

Abstract: Provided are a method and apparatus for performing beamforming training in a wireless local area network. The apparatus receives a plurality of beacon frames for sector sweep in a beacon transmission interval (BTI) from an access point (AP). At least one beacon frame of the plurality of beacon frames includes overload information which indicates an overload state. The apparatus performs a random backoff on a plurality of channels during association-beamforming training (A-BFT) consequent to the BTI based on the overload information.