公开(公告)号：US10742345B2

公开(公告)日：2020-08-11

申请号：US16564193

申请日：2019-09-09

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Kijun Kim ,  Suckchel Yang ,  Hanjun Park ,  Seonwook Kim

IPC: H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04W16/14 ,  H04W88/06 ,  H04W24/08 ,  H04W72/04 ,  H04L1/00

Abstract: Provided are a method for monitoring a control channel in an unlicensed band and an apparatus using the same. In an unlicensed cell, a user equipment (UE) monitors a physical downlink control channel (PDCCH) having burst control information in a search space defined in a control region of a subframe. The control region comprises a plurality of control channel elements (CCEs) starting from an index 0, and the search space is defined only in, from among the plurality of CCEs, first four CCEs and first eight CCEs.

公开(公告)号：US20200236712A1

公开(公告)日：2020-07-23

申请号：US15760034

申请日：2016-09-26

Applicant: LG ELECTRONICS INC.

Inventor： Kyuhwan Kwak ,  Seonwook Kim ,  Yunjung Yi ,  Daesung Hwang ,  Kunil Yum

IPC: H04W74/08

Abstract: Disclosed is a method for transmitting a random access signal in a wireless communication system, the method performed by an user equipment (UE) according to the present specification comprising: transmitting a random access signal to a base station by means of a physical random access channel (PRACH) resource area of a narrow band (NB) having a system bandwidth of 180 kHz, wherein the PRACH resource area comprises a first PRACH resource area and a second PRACH resource area, each of which comprising at least one subcarrier having a particular subcarrier spacing, and any one from among the first PRACH resource area and second PRACH resource area is utilized for data transmission.

公开(公告)号：US10721046B2

公开(公告)日：2020-07-21

申请号：US16262373

申请日：2019-01-30

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Kijun Kim ,  Seonwook Kim ,  Changhwan Park ,  Joonkui Ahn ,  Hanjun Park ,  Seunggye Hwang

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04W76/27 ,  H04L1/00

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for receiving information on a number N of a code block group defined for one transport block from a base station through an upper layer signal, receiving a first transport block including a plurality of code blocks from the base station through a physical layer channel, and transmitting HARQ-ACK payload including HARQ-ACK information on the first transport block to the base station. Preferably, a code block-based CRC is attached to each of the code blocks, a transport block-based CRC is attached to the first transport block, and the HARQ-ACK payload includes a plurality of HARQ-ACK bits corresponding to M code block groups for the first transport block.

公开(公告)号：US20200220671A1

公开(公告)日：2020-07-09

申请号：US16822549

申请日：2020-03-18

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Anh ,  Hanjun Park ,  Yunjung Yi ,  Suckchel Yang ,  Byounghoon Kim ,  Hanbyul Seo

IPC: H04L1/18 ,  H04L5/00 ,  H04L1/00 ,  H04W16/14 ,  H04W28/06 ,  H04W72/04 ,  H04W74/08

Abstract: Embodiments of the present invention relate to a wireless access system supporting a non-licensed band and, more particularly, to methods for transmitting or receiving sub-frame length information indicating the lengths of current and next sub-frames, and apparatuses for supporting the same. As an embodiment of the present invention, a method for receiving sub-frame (SF) length information in a wireless access system supporting a non-licensed band may comprise the steps of: receiving a signal including first SF length information indicating the lengths of one or more of a current SF and a next SF in sub-frame number n−1 (SF # n−1); and receiving one or more of a downlink physical channel and a downlink signal in the SF # n−1 on the basis of the first SF length information. Here, the first SF length information may indicate that the current SF or the next SF is the end SF of a downlink transmission burst in the non-licensed band.

公开(公告)号：US10701722B2

公开(公告)日：2020-06-30

申请号：US15753809

申请日：2016-08-19

Applicant: LG ELECTRONICS INC

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Hanjun Park ,  Byounghoon Kim

IPC: H04W72/12 ,  H04W74/00 ,  H04L1/18 ,  H04L1/00 ,  H04W74/08 ,  H04W16/14 ,  H04W84/12

Abstract: The present invention relates to a radio access system that supports an unlicensed band, and provides methods for controlling a contention window size (CWS) for performing uplink LBT, methods for effectively utilizing a radio resource even when an uplink data transmission fails, and apparatuses supporting the same. As an embodiment of the present invention, a method for controlling a contention window size (CWS) for transmitting uplink data in a radio access system supporting an unlicensed band by a user equipment, may comprise the steps of: receiving, from an evolved node B, a radio signal including CSW control information indicating information required for controlling a CWS; controlling the CWS on the basis of the CWS control information; performing a listen before talk (LBT) process using the controlled CWS; and transmitting uplink data when a result of the LBT process shows that an unlicensed band is in an idle state.

公开(公告)号：US10674519B2

公开(公告)日：2020-06-02

申请号：US15542369

申请日：2016-01-12

Applicant: LG ELECTRONICS INC.

Inventor： Seungmin Lee ,  Suckchel Yang ,  Joonkui Ahn ,  Seonwook Kim

IPC: H04W72/08 ,  H04L1/00 ,  H04L5/00 ,  H04W48/10 ,  H04W48/16 ,  H04W72/04 ,  H04W76/27 ,  H04W24/08 ,  H04W72/12 ,  H04W24/10 ,  H04W36/30 ,  H04J11/00 ,  H04W48/12 ,  H04W36/00 ,  H04W28/06

Abstract: Provided are a method for monitoring downlink control information by user equipment in a wireless communication system and user equipment using the method. The method comprises: receiving “control channel candidate number information” indicating the number of control channel candidates for each aggregation level (AL) of a search space (SS) per cell; and in order to detect DCI, monitoring some initial control channel candidates among existing control channel candidates (legacy candidates), wherein the number of the initial control channel candidates is determined based on the control channel candidate number information.

公开(公告)号：US10560171B2

公开(公告)日：2020-02-11

申请号：US16313399

申请日：2017-06-26

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Suckchel Yang ,  Daesung Hwang

IPC: H04B7/06 ,  H04W72/14 ,  H04W72/04 ,  H04W74/08 ,  H04W16/14 ,  H04W48/16 ,  H04W24/10 ,  H04B7/0452 ,  H04W72/12 ,  H04L5/00

Abstract: Disclosed are a method for a terminal to report channel state information (CSI) to a base station, and an apparatus for supporting the same. More specifically, disclosed are a method for a terminal to report CSI in a wireless communication system supporting an unlicensed band by transmitting a physical uplink shared channel (PUSCH) which only includes the CSI without an uplink shared channel (UL-SCH), and apparatuses for supporting the same.

公开(公告)号：US10548169B2

公开(公告)日：2020-01-28

申请号：US16074599

申请日：2017-02-02

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08 ,  H04W76/28 ,  H04W76/27 ,  H04B7/06 ,  H04L1/18 ,  H04L5/00 ,  H04L25/02 ,  H04W72/04 ,  H04W72/12 ,  H04W72/14 ,  H04L1/16

Abstract: The present invention relates to a wireless communication system, and specifically, to a method and a device for the method which comprises the steps of: receiving a PDCCH including uplink scheduling information; and transmitting, at a UL SF, a PUSCH indicated by the uplink scheduling information, wherein, if the PDCCH requests a transmission of an ACK, the PUSCH includes ACK information about a SF set corresponding to the UL SF, wherein the SF set includes a plurality of SFs.

公开(公告)号：US10548167B2

公开(公告)日：2020-01-28

申请号：US15571453

申请日：2016-05-13

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Byounghoon Kim ,  Suckchel Yang ,  Yunjung Yi ,  Seonwook Kim

IPC: H04J3/06 ,  H04W74/08 ,  H04W16/14 ,  H04W56/00

Abstract: Provided are a method for performing a random access process in an unlicensed band, and a device using the same. The device receives a random access preamble (RAP) order instructing the transmission of a RAP. The device performs a clear channel assessment (CCA) in an unlicensed cell during an RAP window so as to transmit the RAP when the device succeeds in CCA.

公开(公告)号：US10542492B2

公开(公告)日：2020-01-21

申请号：US15761295

申请日：2016-09-23

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Kijun Kim ,  Hanbyul Seo ,  Jonghyun Park ,  Hanjun Park ,  Seonwook Kim

IPC: H04W52/02 ,  H04W16/14 ,  H04W56/00 ,  H04W72/04

Abstract: Provided are a method for discontinuous reception (DRX) in an unlicensed band, and a device using the same. The device is converted from a sleep state to an active state, and attempts downlink synchronization during a synchronization period. If the device does not obtain the downlink synchronization during the synchronization period, downlink data is received in the unlicensed band on the assumption that the modulation order of the downlink data scheduled in the active state is not greater than a specific value.