公开(公告)号：US10568135B2

公开(公告)日：2020-02-18

申请号：US15573060

申请日：2016-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun Park ,  Joonkui Ahn ,  Seonwook Kim

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

Abstract: One embodiment of the present invention relates to a method for channel sensing within an unlicensed band in a wireless communication system. The method is performed by a transmission node which performs the channel sensing, and may comprises the steps of: receiving, from a control node, a control signal including data transfer indication; receiving, from the control node, an indicator indicating an interval at which a channel-sensing related operation associated with the data transfer indication is performed; and performing the channel-sensing related operation for a length of time corresponding to the indicator before a data transfer start time according to the data transfer indication, or, on the basis of the time at which the control signal is received, from after a length of time corresponding to the indicator, until before the data transfer start time according to the data transfer indication.

公开(公告)号：US10568116B2

公开(公告)日：2020-02-18

申请号：US15552431

申请日：2016-03-04

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun Park ,  Joonkui Ahn ,  Seungmin Lee ,  Seonwook Kim

IPC: H04W4/00 ,  H04W72/12 ,  H04W74/08 ,  H04W48/20 ,  H04W72/10 ,  H04W48/16

Abstract: A method for transmitting a signal in an unlicensed band in a wireless communication system according to one embodiment of the present invention is performed by a transmission node and comprising the steps of: receiving information about additional channel sensing from a center node; performing channel sensing for signal transmission during a first time period; when the channel is in an unoccupied state as a result of the channel sensing, performing additional channel sensing during a second time period immediately following the first time period according to the information about the additional channel sensing, the length of the second time period being determined according to a transmission priority level of the transmission node; and when the channel is in an unoccupied state as a result of the additional channel sensing, transmitting a signal.

公开(公告)号：US10560981B2

公开(公告)日：2020-02-11

申请号：US16281735

申请日：2019-02-21

Applicant: LG ELECTRONICS INC.

Inventor： Sechang Myung ,  Seonwook Kim ,  Hanjun Park ,  Joonkui Ahn ,  Suckchel Yang

IPC: H04W80/08 ,  H04W72/14 ,  H04L1/18 ,  H04W76/27 ,  H04W72/04 ,  H04W72/12

Abstract: A method by which a terminal receives data in a wireless communication system and a device using the method are provided. The method is characterized by receiving first data in a unit of transport block, the transport block including at least one code block, transmitting acknowledgement/negative-acknowledgement (ACK/NACK) information for each code block, of which there is at least one, and receiving, in a unit of code block, second data included in a code block, for which NACK has been transmitted, among code blocks, of which there is at least one.

公开(公告)号：US10560208B2

公开(公告)日：2020-02-11

申请号：US15760587

申请日：2016-09-19

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin Shin ,  Yunjung Yi ,  Seonwook Kim ,  Bonghoe Kim

IPC: H04J11/00 ,  H04L5/00 ,  H04L12/18 ,  H04W56/00 ,  H04W72/04

Abstract: A cell search method of a terminal in a wireless communication system, comprises: a step of receiving a narrow band synchronization signal through a narrow band from a base station; and a step of acquiring time synchronization and frequency synchronization with the base station on the basis of the narrow band synchronization signal and detecting an identifier of the base station, wherein the narrow band has a system bandwidth of 180 kHz and includes twelve carriers arranged at intervals of 15 kHz, and the narrow band synchronization signal consists of a first narrow band synchronization signal and a second narrow band synchronization signal, wherein the first narrow band synchronization signal can be transmitted in a sixth subframe of a radio frame and the second narrow band synchronization signal can be transmitted in a tenth subframe of the radio frame.

公开(公告)号：US10536972B2

公开(公告)日：2020-01-14

申请号：US16248618

申请日：2019-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Changhwan Park ,  Joonkui Ahn ,  Suckchel Yang

IPC: H04W74/00 ,  H04W74/04 ,  H04W74/08 ,  H04W16/14

Abstract: Disclosed herein is a method of transmitting a UL signal from a user equipment (UE) in a wireless communication system supporting an unlicensed band and apparatuses for supporting the same. More specifically, the present invention provides an embodiment in which the UE performs autonomous uplink transmission and scheduled uplink transmission through the unlicensed band, a method of adjusting contention window size when the UE perform the autonomous uplink transmission through the unlicensed band, and an embodiment of performing the autonomous uplink transmission based on the method.

公开(公告)号：US10524239B2

公开(公告)日：2019-12-31

申请号：US15751144

申请日：2016-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Hanjun Park ,  Seonwook Kim

IPC: H04W72/04 ,  H04W74/08 ,  H04W16/14

Abstract: Provided are a method and an apparatus for transmitting data in an unlicensed band. The apparatus determines whether a wireless medium is idle by performing a clear channel assessment (CCA) during a plurality of continuous CCA slots in the unlicensed band. When the wireless medium is idle, the apparatus transmits a reservation signal to occupy the wireless medium during a plurality of continuous reservation slots until transmission of a data burst begins.

公开(公告)号：US10516460B2

公开(公告)日：2019-12-24

申请号：US16079821

申请日：2017-02-27

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Kijun Kim ,  Eunsun Kim ,  Seonwook Kim

IPC: H04K1/10 ,  H04L27/28 ,  H04B7/06 ,  H04W72/04 ,  H04B7/0495 ,  H04L27/26 ,  H04W74/08

Abstract: The present invention relates to a wireless communication system, and specifically to a method and an apparatus therefor, the method comprising the steps of: identifying static resource in a subframe set; and transmitting and receiving data using the remaining resource, excluding the static resource, in the subframe set, wherein the remaining resource is used for downlink (DL) reception of used for uplink (UL) transmission according to an instruction by a base station.

公开(公告)号：US20190363832A1

公开(公告)日：2019-11-28

申请号：US16532090

申请日：2019-08-05

Applicant: LG Electronics Inc.

Inventor： Suckchel YANG ,  Byounghoon Kim ,  Kijun Kim ,  Joonkui Ahn ,  Changhwan Park ,  Seonwook Kim

IPC: H04L1/18 ,  H04W72/04

Abstract: The present invention relates to a wireless communication system and, more particularly, to a method and an apparatus therefor, the method comprising the steps of: identifying a minimum storing area per data in a HARQ buffer on the basis of a TTI length; storing data for transmission of a wireless signal in the HARQ buffer on the basis of the minimum storing area per data; and transmitting the data in the HARQ buffer during a first TTI, wherein, when the data is retransmitted data, the minimum storing area per data is based on the length of a second TTI used for initial transmission of the data, and the length of the second TTI is different from the length of the first TTI.

公开(公告)号：US10477567B2

公开(公告)日：2019-11-12

申请号：US16354845

申请日：2019-03-15

Applicant: LG Electronics Inc.

Inventor： Hanjun Park ,  Suckchel Yang ,  Seonwook Kim

IPC: H04W72/12 ,  H04W72/04 ,  H04W76/27 ,  H04L1/18 ,  H04L5/00 ,  H04W76/11

Abstract: A wireless communication system is disclosed. More particularly, disclosed herein are a method including receiving downlink scheduling information on a PDCCH, the downlink scheduling information comprising resource indication information (RI), selecting a first PUCCH resource set from among a plurality of PUCCH resource sets based on a size of the control information, and transmitting the control information using a PUCCH resource corresponding to the RI in the first PUCCH resource set, wherein, when a control information size supported by the first PUCCH resource set is less than or equal to X (>=1) bits, the PUCCH resource is determined using one of a first scheme and a second scheme, and wherein, when the control information size supported by the first PUCCH resource set is greater than X bits, the PUCCH resource is determined using only the second scheme, and an apparatus therefor.

公开(公告)号：US10455605B2

公开(公告)日：2019-10-22

申请号：US15757314

申请日：2016-07-12

Applicant: LG ELECTRONICS INC.

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

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

Abstract: The present invention relates to a wireless access system supporting an unlicensed band, various methods for adjusting a contention window size, methods for performing a carrier sensing process in a single engine and a multi-engine, and an apparatus supporting the same. As one embodiment of the invention, a method for adjusting a contention window size (CWS) in a wireless access system supporting an unlicensed band may comprise: a step of setting a contention window size (CWS) necessary for performing a channel access process for each of priority classes; a step of performing a channel access process for a particular priority class in a channel in an unlicensed band on the basis of the set CWS; a step of performing a downlink transmission related to the particular priority class if it is determined that the channel in the unlicensed band is in an idle state as a result of the channel access process; and a step of making adjustments for all CWS' of priority classes if a triggering event, which relates to a downlink transmission and increases or reduces the CWS for the particular priority class, occurs.