公开(公告)号：US10721777B2

公开(公告)日：2020-07-21

申请号：US16190952

申请日：2018-11-14

Applicant: LG Electronics Inc.

Inventor： Seokmin Shin ,  Changhwan Park ,  Seonwook Kim ,  Joonkui Ahn ,  Suckchel Yang ,  Seunggye Hwang

IPC: H04W74/08 ,  H04L27/26 ,  H04L5/14 ,  H04L27/00 ,  H04W74/00 ,  H04L5/00

Abstract: A method for transmitting a random access preamble in a narrowband-IoT system supporting time division duplexing and an apparatus therefor. In some implementations, a method for transmitting a narrowband physical random access channel (NPRACH) preamble by a user equipment in a narrowband-Internet of things (NB-IoT) system supporting time division duplexing may include: receiving, from a base station, configuration information related to an uplink-downlink configuration; and transmitting, to the base station, the NPRACH preamble configured by considering the uplink-downlink configuration.

公开(公告)号：US10716149B2

公开(公告)日：2020-07-14

申请号：US16073449

申请日：2017-01-26

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08 ,  H04W16/14

Abstract: Provided are a method of performing a random access procedure in an unlicensed band and a device using the method. The device performs a clear channel assessment (CCA) during a random access preamble (RAP) window in the unlicensed band. If the CCA succeeds, the wireless device transmits a plurality of RAPs. The plurality of RAPs are repeatedly transmitted in a frequency domain or a time domain.

公开(公告)号：US10716139B2

公开(公告)日：2020-07-14

申请号：US15573450

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: H04W4/00 ,  H04W74/08 ,  H04W74/00 ,  H04L1/18

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 and devices for supporting the same. As an embodiment of the present invention, a method for adjusting a contention window size (CWS) in a wireless access system supporting an unlicensed band may comprise the steps of: performing a channel access procedure; when, as a result of performing the channel access procedure, it is determined that a serving cell (Scell) in the unlicensed band is in an idle state, transmitting a transmission burst including a downlink signal; receiving HARQ-ACK information corresponding to the transmission burst; and adjusting the CWS on the basis of the HARQ-ACK information corresponding to the first subframe of the transmission burst.

公开(公告)号：US10708799B2

公开(公告)日：2020-07-07

申请号：US15751965

申请日：2016-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Joonkui Ahn ,  Kijun Kim ,  Yunjung Yi ,  Seonwook Kim

IPC: H04W24/10 ,  H04L5/00 ,  H04W28/26 ,  H04W74/08

Abstract: Provided are a method and an apparatus for performing radio resource management (RRM) measurement in an unlicensed band. The apparatus sets a first measurement section and a second measurement section for the RRM measurement in the unlicensed band, and measures a received signal strength indicator (RSSI) during the first measurement section and the second measurement section.

公开(公告)号：US10681744B2

公开(公告)日：2020-06-09

申请号：US16242804

申请日：2019-01-08

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：US10680761B2

公开(公告)日：2020-06-09

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: H04W72/04 ,  H04L1/18

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：US20200170034A1

公开(公告)日：2020-05-28

申请号：US16778500

申请日：2020-01-31

Applicant: LG Electronics Inc.

Inventor： Eunsun Kim ,  Seonwook Kim ,  Kijun Kim ,  Suckchel Yang ,  Hanbyul Seo ,  Yunjung Yi ,  Ilmu Byun

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/18 ,  H04B1/00 ,  H04W72/14 ,  H04W72/04

Abstract: According to the present invention, a first physical downlink control channel (PDCCH) and a second PDCCH can be transmitted to user equipment. A first physical downlink data channel (PDSCH) corresponding to the first PDCCH, and a second PDSCH corresponding to the second PDCCH can be transmitted to the user equipment. When the first PDSCH has a lower decoding priority than the second PDSCH, and the decoding timing of the first PDSCH and the decoding timing of the second PDSCH overlap, the user device may decode the second PDSCH and not the first PDSCH at the decoding timing, and transmit information with respect to the first PDSCH as first ACK/NACK information. As a reply to the first ACK/NACK information, a third PDCCH not having a corresponding PDSCH may be transmitted to the user equipment.

公开(公告)号：US10588113B2

公开(公告)日：2020-03-10

申请号：US16440449

申请日：2019-06-13

Applicant: LG Electronics Inc.

Inventor： Suckchel Yang ,  Hanjun Park ,  Seonwook Kim

IPC: H04W72/04 ,  H04B1/713 ,  H04L1/18 ,  H04L5/00

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method including receiving indication information related to a PUCCH resource set of a specific PUCCH format through system information, the PUCCH resource set comprising a first RB offset, receiving a PDCCH including a resource indicator RI through CCE, and transmitting the control information on the PUCCH, wherein an RB index of the PUCCH is determined based on the first RB offset and a second RB offset related to a first bit value of the RI, and wherein a CS index of the PUCCH is determined based on a combination of [a second bit value of the RI, a 1-bit value based on a starting CCE index of the PDCCH (hereinafter, a CCE-based 1-bit value)] in a CS index set, and an apparatus therefor.

公开(公告)号：US10581571B2

公开(公告)日：2020-03-03

申请号：US15770101

申请日：2016-10-21

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Joonkui Ahn ,  Kijun Kim ,  Jonghyun Park ,  Hanjun Park ,  Yunjung Yi

IPC: H04L5/00 ,  H04W48/16 ,  H04W72/04 ,  H04W16/14 ,  H04W74/08

Abstract: The embodiments of the present invention relate to a wireless access system supporting an unlicensed band and to methods for generating a discovery signal (DRS), methods for generating and transmitting a channel state information reference signal included in the DRS, and devices for supporting same. The method for transmitting a discovery signal (DRS) including a channel state information reference signal (CSI-RS) in a wireless access system supporting an unlicensed band, according to one embodiment of the present invention, may comprise the steps of: initiating, in subframe n (SF #n), a listen-before-talk (LBT) procedure for checking whether the unlicensed band is idle or not; if an LBT procedure succeeds in SF #n+k, generating a sequence for transmitting the CSI-RS on the basis of the subframe index j indicating SF #j; and transmitting the DRS, including the CSI-RS, in SF #n+k. Herein n, k, and j are preferably integers greater than or equal to 0 and less than or equal to 9.

公开(公告)号：US20200059930A1

公开(公告)日：2020-02-20

申请号：US16346933

申请日：2017-11-06

Applicant: LG Electronics Inc.

Inventor： Seungmin Lee ,  Suckchel Yang ,  Kijun Kim ,  Seonwook Kim ,  Yunjung Yi

IPC: H04W72/04

Abstract: Provided are a communication method using a frequency band of a base station in a wireless communication system, and a device using the method. The method divides an entire frequency band so as to determine a plurality of subbands and transmits a transport block in at least one subband among the plurality of subbands, wherein the size of the transport block has a maximum value set so as to correspond to the entire frequency band size or the subband size.