公开(公告)号：US20190159266A1

公开(公告)日：2019-05-23

申请号：US16252492

申请日：2019-01-18

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook KIM ,  Joonkui AHN ,  Kijun KIM ,  Yunjung YI ,  Suckchel YANG

IPC: H04W74/08 ,  H04L25/02 ,  H04W72/04 ,  H04W72/10 ,  H04L5/00

Abstract: Disclosed are a method for transmitting, by a terminal, a sounding reference signal to a base station without a physical uplink shard channel in a licensed assisted access (LAA) system in which a base station or a terminal performs listen-before-talk (LBT)-based signal transmission, and an apparatus supporting the same.

公开(公告)号：US20190150181A1

公开(公告)日：2019-05-16

申请号：US16248695

申请日：2019-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook KIM ,  Suckchel YANG ,  Joonkui AHN ,  Jaehyung KIM

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/18

Abstract: The present invention discloses a method for transmitting or receiving ACK response information between a UE and a BS in a wireless communication system and an apparatus for supporting the same.

公开(公告)号：US20190037584A1

公开(公告)日：2019-01-31

申请号：US16071890

申请日：2017-01-23

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Seonwook KIM ,  Joonkui AHN

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

Abstract: Disclosed are an uplink transmission method in a wireless communication system and a device therefor. Particularly, a method for performing uplink transmission by a user equipment (UE) in an unlicensed band in a wireless communication system may comprise the steps of: sensing a channel in an entire uplink frequency band, and then sensing a channel in a predetermined resource area during a predetermined first time interval; and as a result of the channel sensing, when the channel is determined to be idle, performing uplink transmission to an eNB in an uplink resource area allocated by the eNB, wherein the uplink transmission may not be mapped in an area overlapping the predetermined resource area during a predetermined second time interval in the allocated uplink resource area.

公开(公告)号：US20180270025A1

公开(公告)日：2018-09-20

申请号：US15749987

申请日：2016-07-29

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook KIM ,  Joonkui AHN ,  Suckchel YANG ,  Kijun KIM ,  Jonghyun PARK ,  Daesung HWANG

IPC: H04L1/18 ,  H03M13/09 ,  H04W72/04 ,  H04W76/27 ,  H04L5/00

CPC classification number: H04L1/0042 ,  H03M13/09 ,  H03M13/098 ,  H04L1/0061 ,  H04L1/1861 ,  H04L5/0053 ,  H04L5/0055 ,  H04W72/042 ,  H04W76/27

Abstract: Disclosed are: a transmission method for receiving an input bit for data to be transmitted to a reception end, determining a position of a parity bit according to a value indicated by additional information to be transmitted together with the data, and transmitting a bitstream by encoding the input bit and the parity bit according to the position of the parity bit; and a processing method for decoding the bitstream by taking into consideration of a position at which the parity bit is added to the input bit in the bitstream received from a transmission end, and acquiring the additional information transmitted together with the data indicated by the input bit according to the decoded result.

公开(公告)号：US20180249484A1

公开(公告)日：2018-08-30

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: H04W72/12 ,  H04W74/08 ,  H04W74/00

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.

公开(公告)号：US20180242364A1

公开(公告)日：2018-08-23

申请号：US15751975

申请日：2016-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun PARK ,  Joonkui AHN ,  Seonwook KIM

IPC: H04W74/08 ,  H04W16/14 ,  H04W24/08 ,  H04W52/36

CPC classification number: H04W74/0816 ,  H04W16/14 ,  H04W24/08 ,  H04W52/367 ,  H04W74/00 ,  H04W74/08 ,  H04W88/08

Abstract: A method for performing channel access in an unlicensed band by a base station in a wireless communication system according to an embodiment of the present invention may comprise the steps of: sensing, in an unlicensed band, a carrier for transmitting a downlink signal; and transmitting the downlink signal when power detected by sensing the carrier is less than an energy detection threshold set by the base station, wherein the energy detection threshold is set to be equal to or less than a maximum energy detection threshold determined by the base station, and when another radio access technology (RAT) sharing the carrier exists, the maximum energy detection threshold is adaptively determined depending on the bandwidth size of the carrier, using the value, in decibels, of the ration between a reference bandwidth and the bandwidth of the carrier.

公开(公告)号：US20180220444A1

公开(公告)日：2018-08-02

申请号：US15748017

申请日：2016-09-21

Applicant: LG ELECTRONICS INC.

Inventor： Hyunho LEE ,  Youngtae KIM ,  Seonwook KIM

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1289 ,  H04L5/001 ,  H04L5/005 ,  H04L5/0051 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2646 ,  H04W72/0453 ,  H04W72/1263

Abstract: An embodiment of the present invention relates to a method for receiving a downlink signal for a terminal which is set to operate in multiple frequency bands in a wireless communication system. The method is performed by a terminal, and may comprise the steps of: receiving information on a transmission unit of a control channel transmitted in each of the multiple frequency bands, wherein subcarrier spacing for each of the multiple frequency bands is adaptively adjusted; and detecting the control channel in each of the multiple frequency bands on the basis of the information.

公开(公告)号：US20180213386A1

公开(公告)日：2018-07-26

申请号：US15743195

申请日：2016-07-11

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook KIM ,  Joonkui AHN ,  Suckchel YANG ,  Hanjun PARK ,  Yunjung YI

IPC: H04W8/00 ,  H04L5/00 ,  H04W4/06 ,  H04W48/16

Abstract: The present disclosure relates to a wireless access system supporting an unlicensed band, and provides methods for transreceiving discovery reference signals and devices supporting same. A method for a terminal receiving a discovery reference signal (DRS) in a wireless access system supporting an unlicensed band, according to one embodiment of the present disclosure, may comprise the steps of: receiving an upper layer signal including parameters indicating a multimedia broadcast multicast service single frequency network (MBSFN) subframe; receiving a setting for a discovery measurement timing configuration (DMTC) section, which is a time section during which the DRS can be transmitted; and receiving the DRS within the DMTC section, wherein when a first subframe belonging to the DMTC section is configured as the MBSFN subframe and the DRS is transmitted from the first subframe, an MBSFN configuration may not be applied to the MBSFN subframe.

公开(公告)号：US20180199353A1

公开(公告)日：2018-07-12

申请号：US15743612

申请日：2016-07-29

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui AHN ,  Suckchel YANG ,  Seonwook KIM ,  Hanjun PARK ,  Yunjung YI

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

CPC classification number: H04W72/12 ,  H04W16/14 ,  H04W52/365 ,  H04W52/367 ,  H04W56/00 ,  H04W74/08 ,  H04W74/0808

Abstract: Provided are a method and apparatus for transmitting data in an unlicensed band. The device determines a downlink reception end time and an uplink transmission start time at which the uplink transmission starts in the unlicensed band. If the interval between the downlink reception end time and the uplink transmission start time is equal to or less than a threshold value, the device abandons the uplink transmission.

公开(公告)号：US20180184459A1

公开(公告)日：2018-06-28

申请号：US15324602

申请日：2015-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook KIM ,  Joonkui AHN ,  Hanbyul SEO ,  Hyukjin CHAE

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0825 ,  H04L5/00 ,  H04W16/14

Abstract: The present invention relates to methods for supporting carrier sensing in a wireless access system supporting an unlicensed band, and devices supporting same. A method for supporting carrier sensing in a wireless access system supporting an unlicensed band, according to an embodiment of the present invention, comprises the steps of: selecting a backoff counter value for performing carrier sensing; performing carrier sensing in a serving cell (S-cell) until the backoff counter value reaches a predetermined threshold value; when the backoff counter value reaches the predetermined threshold value, transmitting data in a transmission opportunity (TXOP) interval; receiving a reception state feedback indicating whether the transmitting of data is success, collision or error; and resetting the backoff counter value on the basis of the reception state feedback, wherein the S-cell can be configured in an unlicensed band.