公开(公告)号：US10447448B2

公开(公告)日：2019-10-15

申请号：US15523226

申请日：2015-11-02

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho ,  Wookbong Lee

IPC: H04L12/24 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12

Abstract: A method for transmitting data from a station (STA) device in a wireless LAN (WLAN) system, according to one embodiment of the present invention, comprises the steps of: generating a physical protocol data unit (PPDU) including a physical preamble, which includes a legacy preamble and a high efficiency-long training field (HE-LTF), and a data field; and transmitting the PPDU, wherein the data field is transmitted at four times (4×) the inverse discrete Fourier transform (IDFT)/discrete Fourier transform (DFT) cycle of the legacy preamble, the HE-LTF is a 4×HE-LTF or a 2×HE-LTF which is respectively transmitted at the four times or two times (2×) the IDFT/DFT cycle of the legacy preamble, and wherein pilot tones of the HE-LTF may be inserted only into subcarriers having an even number of indexes from among subcarriers to which the 4×HE-LTF is mapped.

公开(公告)号：US10374767B2

公开(公告)日：2019-08-06

申请号：US15767701

申请日：2016-10-14

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinyoung Chun ,  Jinsoo Choi ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26

Abstract: Provided is a method for a first station (STA) transmitting a frame to a second STA in a wireless LAN system. To this end, the first STA generates a wireless frame comprising a first part (L-part) for a first-type STA and a second part (HE-part) for a second-type STA, wherein the first part comprises a legacy short training field (L-STF), a legacy long training field (L-LTF) and a legacy signaling field (L-SIG), and the length of the L-SIG is set so as to indicate that the wireless frame is a frame of different types according to the remainder when the length of the L-SIG is divided by a predetermined natural number.

公开(公告)号：US10349388B2

公开(公告)日：2019-07-09

申请号：US15242008

申请日：2016-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Jeongki Kim ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04W72/04 ,  H04W72/08 ,  H04L5/00 ,  H04L1/00 ,  H04W84/12 ,  H04W28/10 ,  H04W4/70 ,  H04L1/06 ,  H04B7/06 ,  H04W88/08

Abstract: Disclosed herein is a sounding method of a station (STA) for sending feedback information about a downlink (DL) channel state in a wireless LAN (WLAN) system. The sounding method includes receiving an NDP announcement (NDPA) frame providing notification of the transmission of a null data packet (NDP) frame; receiving the NDP frame; receiving a trigger frame comprising resource allocation information allocated to the STA; generating feedback information using the NDP frame; and sending a feedback frame comprising feedback information through uplink (UL) multi-user (MU) transmission using a frequency resource indicated by the resource allocation information. The feedback information may be generated in a frequency granularity (FG) unit with respect to a transmission bandwidth having a size smaller than or equal to the size of a transmission bandwidth of the NDP frame.

公开(公告)号：US10334568B2

公开(公告)日：2019-06-25

申请号：US15559781

申请日：2016-07-07

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinsoo Choi ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04W72/04 ,  H04B7/26 ,  H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04B7/0452 ,  H04W84/12 ,  H04W88/08

Abstract: A method for transmitting a frame by an AP includes generating and transmitting a radio frame including a signaling field and a data field. The signaling field includes a SIG A field including first common control information for the plurality of STAs, and a SIG B field including specific control information for each of the plurality of STAs. The second signaling field includes a common field including second common control information for the plurality of STAs, and a specific field following the common field, including the specific control information for each of the plurality of STAs, and the specific field of the second signaling field transmitted in a specific 20-MHz band includes resource allocation information for one or more first-band STAs to which resources are allocated in the first band, and resource allocation information for one or more second-band STAs to which resources are allocated in another 20-MHz band.

公开(公告)号：US10320601B2

公开(公告)日：2019-06-11

申请号：US15506651

申请日：2015-08-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04L27/26 ,  H04L29/08 ,  H04W28/22 ,  H04W72/12 ,  H04B7/0452 ,  H04B7/06

Abstract: Disclosed herein is a station (STA) device of a wireless LAN (WLAN) system. The STA device includes a radio frequency (RF) unit sending and receiving a radio signal and a processor controlling the RF unit. The processor may generate a physical protocol data unit (PPDU) including a physical preamble and a data field and send the PPDU using the RF unit.

公开(公告)号：US10298304B2

公开(公告)日：2019-05-21

申请号：US15259519

申请日：2016-09-08

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinyoung Chun ,  Jinsoo Choi ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04W4/00 ,  H04B7/06 ,  H04L25/02 ,  H04W84/12

Abstract: When an AP (access point) performs sounding to transmit a frame to one or more STAs using a beamforming scheme in a wireless LAN (WLAN) system, the AP receives a beamforming feedback, which is generated based on measurement of a specific signal transmitted by the AP in a manner that the one or more STAs group a prescribed number of tones according to a tone grouping element (Ng). In this case, the Ng is configured by a multiple of 4.

公开(公告)号：US10292146B2

公开(公告)日：2019-05-14

申请号：US15502193

申请日：2015-08-05

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Disclosed are a method and a device for allocating wireless resources for transmitting or receiving data in a wireless LAN. The method for allocating the wireless resources in the wireless LAN can comprise the steps of: allocating, by an access point (AP), each of the plurality of wireless resources for each of a plurality of stations (STAs) over the entire bandwidth; and transmitting, by the AP, a physical protocol data unit (PPDU) to each of the plurality of STAs through each of the plurality of wireless resources, wherein each of the plurality of wireless resources can be a combination of a plurality of wireless resource units defined as having different sizes from each other on a frequency axis.

公开(公告)号：US10257809B2

公开(公告)日：2019-04-09

申请号：US15854687

申请日：2017-12-26

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Hangyu Cho

IPC: H04W4/70 ,  H04B7/026 ,  H04W72/04

Abstract: The present invention relates to a method for performing a device-to-device cooperative transmission (D2D CT) using a multi-carrier in a wireless access system, including the steps of: enabling a source device to perform a network entry process with a base station using a primary carrier; enabling the source device to receive control information related to a dedicated carrier used for D2D CT from the base station through the primary carrier; and enabling the source device to transmit an uplink signal to a collaborative device using the dedicated carrier.

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：US10122508B2

公开(公告)日：2018-11-06

申请号：US15224386

申请日：2016-07-29

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26

Abstract: Proposed herein is a LTF sequence that is used in a wireless LAN system. The proposed LTF sequence may correspond to a sequence for a second frequency band of a second wireless LAN system. The proposed sequence may be generated through a LTF sequence that is used in a first wireless LAN system, which is different from the second wireless LAN system. The LTF sequence of the first wireless LAN system may correspond to a sequence for a first frequency band, which is different from the second frequency band. A length of an IDFT/DFT period and a bandwidth of a transmission frequency that are applied to the LTF sequence of the first wireless LAN system are different from a length of an IDFT/DFT period and a bandwidth of a transmission frequency that are applied to the LTF sequence of the second wireless LAN system.