公开(公告)号：US10285067B2

公开(公告)日：2019-05-07

申请号：US15559392

申请日：2016-03-22

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Seonwook Kim

IPC: H04W16/14 ,  H04W74/08 ,  H04W84/12

Abstract: Provided are a method for transmitting data in an unlicensed band and a device using the same. A transmission node generates a signal to be transmitted in the unlicensed band, and performs listen before talk (LBT) according to the type of the generated signal. If a wireless medium is idle as a result of the LBT, the transmission node transmits the generated node in the unlicensed band.

公开(公告)号：US10219287B2

公开(公告)日：2019-02-26

申请号：US15573456

申请日：2016-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Suckchel Yang ,  Kijun Kim ,  Byounghoon Kim ,  Hanbyul Seo ,  Hanjun Park ,  Daesung Hwang

IPC: H04W72/12 ,  H04L1/18 ,  H04W76/28 ,  H04W24/10 ,  H04W74/00 ,  H04L5/00 ,  H04W74/08 ,  H04W28/06 ,  H04W88/06

Abstract: The present invention relates to a wireless access system supporting an unlicensed band and provides methods for performing a channel access process for transmitting different types of signals, and devices supporting the same. According to one embodiment of the present invention, a method for transmitting different types of signals in a wireless access system supporting an unlicensed band can comprise the steps of: performing a first channel process (CAP) for transmitting a first type of signal; and transmitting a transmission burst including the first type of signal through the unlicensed band if it is determined that a serving cell (SCell) of the unlicensed band is in an idle state after performing the first CAP. At this time, at least one of first parameters for performing the first CAP can be set to be value less than that of second parameters for performing a second CAP for transmitting a second type of signal.

公开(公告)号：US10212738B2

公开(公告)日：2019-02-19

申请号：US15573435

申请日：2016-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Suckchel Yang ,  Kijun Kim ,  Byounghoon Kim ,  Hanbyul Seo ,  Hanjun Park ,  Daesung Hwang

IPC: H04W74/08 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W76/28 ,  H04W28/02 ,  H04W28/26

Abstract: The present invention relates to a wireless access system that supports an unlicensed band, and provides various methods for adjusting a contention window size, methods for determining the time when the adjusted contention window size is applied, methods for distinguishing between a collision and a channel error, and devices for supporting the same. As an embodiment of the present invention, a method for adjusting a contention window size in a wireless access system supporting an unlicensed band may comprise the steps of: performing a channel access procedure; when it is determined through the performed channel access procedure that a serving cell (Scell) in the unlicensed band is in an idle state, transmitting a transmission burst including a downlink signal through the unlicensed band; receiving hybrid automatic repeat and request acknowledgment (HARQ-ACK) information corresponding to the transmission burst; and adjusting the CWS using the number of DTX states in the HARQ-ACK information when the transmission burst is scheduled in a self-carrier scheduling scheme.

公开(公告)号：US10193608B2

公开(公告)日：2019-01-29

申请号：US15326998

申请日：2015-07-15

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Hanbyul Seo ,  Kijun Kim ,  Joonkui Ahn ,  Byounghoon Kim ,  Seungmin Lee ,  Yunjung Yi ,  Seonwook Kim

IPC: H04B7/06 ,  H04W16/14 ,  H04L5/00 ,  H04B17/24 ,  H04B7/0417

Abstract: Disclosed are a method for transmitting/receiving channel state information (CSI) in a wireless communication system and a device therefor. Specifically, a method for transmitting channel state information by a terminal in a wireless communication system may comprise the steps of: determining CSI for a serving cell in an unlicensed band; and transmitting the CSI at a periodic CSI report time point within a reserved resource period (RRP) which is a time period reserved for transmitting/receiving data in the serving cell.

公开(公告)号：US20180255578A1

公开(公告)日：2018-09-06

申请号：US15758306

申请日：2016-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Hanjun Park

IPC: H04W74/08 ,  H04L5/00 ,  H04W16/14 ,  H04W72/12 ,  H04W72/14

CPC classification number: H04W74/0808 ,  H04L5/001 ,  H04W16/14 ,  H04W72/1268 ,  H04W72/14 ,  H04W74/0833

Abstract: The present invention relates to a wireless access system supporting an unlicensed band, and to methods for performing uplink listen before talk (LBT) on multiple carriers, and a device supporting the same. According to one embodiment of the present invention, a method by which a terminal performs LBT in a wireless access system supporting an unlicensed band and multiple carriers can comprise the steps of: receiving, from a base station, each of uplink grants for scheduling uplink channels on two or more component carriers (CCs); randomly selecting a first CC on which a first LBT is to be performed from among the two or more CCs; performing the first LBT on the selected first CC: and performing a second LBT on the remaining CCs among the two or more CCs, wherein the first LBT can be a random back-off-based LBT for performing a random back-off by a random back-off counter value, and the second LBT can be a channel sensing-based LBT for sensing a channel during a predetermined time interval before uplink transmission.

公开(公告)号：US20170126306A1

公开(公告)日：2017-05-04

申请号：US15318926

申请日：2015-06-30

Applicant: LG Electronics Inc.

Inventor： Seonwook Kim ,  Hanbyul Seo ,  Seungmin Lee

IPC: H04B7/155 ,  H04W72/12 ,  H04W72/04 ,  H04W76/02

CPC classification number: H04B7/15507 ,  H04B7/15528 ,  H04W72/044 ,  H04W72/1289 ,  H04W76/14 ,  H04W88/04 ,  H04W92/18

Abstract: Provided are methods for, in a wireless access system supporting device-to-device (D2D) communication, configuring a relay terminal and selecting a link through which the relay terminal can efficiently transmit a D2D signal, and devices for supporting same. A method for effectively transmitting a D2D signal by a relay terminal in a wireless access system supporting D2D communication, according to an embodiment of the present invention, comprises the steps of: receiving relay mode configuration information from a base station; receiving scheduling information about a first resource pool and a second resource pool from the base station; relaying a D2D signal through an access link in the first resource pool; and transmitting the D2D signal through a one-hop D2D link in the second resource pool. The relay terminal is connected to both of the access link and the one-hop D2D link, wherein the access link can be configured for D2D relay communication with the base station, and the one-hop D2D link can be configured for D2D direct communication with another terminal.

公开(公告)号：US12302402B2

公开(公告)日：2025-05-13

申请号：US17641998

申请日：2020-05-20

Applicant: LG Electronics Inc.

Inventor： Jeongsu Lee ,  Sukhyon Yoon ,  Hyunsoo Ko ,  Seonwook Kim

IPC: H04W74/0833 ,  H04W74/00

Abstract: Disclosed is a method for transmitting and receiving a signal for a terminal to perform a random access channel procedure (RACH Procedure) in an unlicensed band. In particular, the method comprises: receiving a synchronization signal/physical broadcast channel block (SS/PBCH block); obtaining system information from a PBCH included in the SS/PBCH block; sending a first physical random access channel (PRACH) preamble through a message A on the basis of the system information; and receiving a random access response (RAR) through a message B related to contention resolution in response to the message A, wherein the first PRACH preamble is a PRACH preamble mapped to a physical uplink shared channel (PUSCH) occasion for the message A, and a window for reception of the message B may start after at least one symbol from the last symbol of the PUSCH occasion.

公开(公告)号：US12284042B2

公开(公告)日：2025-04-22

申请号：US17267735

申请日：2019-08-12

Applicant: LG Electronics Inc.

Inventor： Suckchel Yang ,  Seonwook Kim ,  Hanjun Park

IPC: H04L1/1829 ,  H04L5/00 ,  H04W72/1273 ,  H04W72/21 ,  H04W72/23 ,  H04W74/0833

Abstract: The present invention relates to a wireless communication system and, more particularly, to a method and apparatus therefor, the method comprising the steps of: receiving scheduling information including a DAI value and a 1-bit indicator, the DAI value indicating a modulo value for a scheduling order; receiving data on the basis of the scheduling information; and transmitting A/N feedback including A/N information about the data, wherein a position of the A/N information in the A/N feedback is determined based on (1) the DAI value and (2) a bit value of the 1-bit indicator or on whether the 1-bit indicator is toggled.

公开(公告)号：US12273931B2

公开(公告)日：2025-04-08

申请号：US18468455

申请日：2023-09-15

Applicant: LG Electronics Inc.

Inventor： Seokmin Shin ,  Suckchel Yang ,  Joonkui Ahn ,  Hyunsoo Ko ,  Seonwook Kim ,  Jeongsu Lee

IPC: H04W74/0836 ,  H04L27/26 ,  H04W72/1263 ,  H04W74/0833

Abstract: A method and a device for transmitting/receiving a signal in a wireless communication system, according to one embodiment of the present invention, perform a two-step or four-step random access procedure, and monitor a PDCCH according to a DRX configuration, wherein the PRACH transmitted in the random access procedure is transmitted on a specific RO from among a plurality of ROs, and a starting RB index of the specific RO can be determined on the basis of (i) the lowest RB index of an RB set including the specific RO, (ii) the starting RB index of an RO positioned at the lowest frequency, and (iii) the lowest RB index of an RB set including the RO positioned at the lowest frequency.

公开(公告)号：US12238770B2

公开(公告)日：2025-02-25

申请号：US17635615

申请日：2020-08-13

Applicant: LG Electronics Inc.

Inventor： Duckhyun Bae ,  Hyunho Lee ,  Suckchel Yang ,  Seonwook Kim ,  Changhwan Park

IPC: H04W74/0816 ,  H04L1/08 ,  H04W72/0453 ,  H04W74/08

Abstract: A transmission device may perform listen-before-talk (LBT) with regard to an unlicensed band. The transmission device may determine M LBT sub-bands which are in an idle state, on the basis of the performing of the LBT for the unlicensed band. The transmission device may perform N repetitive transmissions of a transport block (TB) over the M LBT sub-bands. The N repetitive transmissions of the TB may include performing M repetitive transmissions over the M LBT sub-bands, respectively.