公开(公告)号：US10470049B2

公开(公告)日：2019-11-05

申请号：US15753840

申请日：2016-08-22

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Provided are a method for determining a valid subframe for cell in a non-licensed band in a wireless communication system, and a wireless apparatus using the method. The method comprises: determining whether all orthogonal frequency division multiplexing (OFDM) symbols of the cell are usable; and when all of the OFDM symbols of the subframe are usable, determining whether the subframe is a valid subframe based on whether a channel state information-reference signal (CSI-RS) resource is present in the subframe.

公开(公告)号：US10470047B2

公开(公告)日：2019-11-05

申请号：US15077353

申请日：2016-03-22

Applicant: LG ELECTRONICS INC.

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

IPC: H04W16/14 ,  H04L5/00 ,  H04B17/318 ,  H04W74/08 ,  H04J11/00 ,  H04L27/00

Abstract: Provided is a method for performing channel sensing by a node. The node receives information about a known signal to be transmitted by at least one node of a node group that the node performing the channel sensing belongs to, detects the known signal using the information about the known signal, cancels reception power of the known signal from measured reception power, during a time period in which the known signal is detected, compares remaining reception power except for the reception power with a threshold, and determines whether a channel is occupied or unoccupied according to the comparison. The information about the known signal includes a sequence of the known signal, a power offset between a transmission signal and the known signal during a valid duration of the reception power of the known signal, or a cancellation ratio of reception power of the transmission signal during the valid duration.

公开(公告)号：US10469145B2

公开(公告)日：2019-11-05

申请号：US15819071

申请日：2017-11-21

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Hanjun Park

IPC: H04B7/0456 ,  H04B17/382 ,  H04B7/06 ,  H04B7/0417 ,  H04L5/00 ,  H04W72/04 ,  H04W72/06 ,  H04L1/00 ,  H04W88/02

Abstract: A method for reporting channel state information (CSI) by a user equipment (UE) in a wireless communication system, the method includes jointly encoding a rank indicator (RI) and a first precoding matrix indicator (PMI) into an encoded value for a specific CSI report mode; and reporting the encoded value, wherein the RI and the first PMI are jointly encoded into the encoded value in a way that following conditions are satisfied: when the RI is 1 and a codebook index for the first PMI is same as the encoded value, the encoded value is an integer ranging from 0 to 7, when the RI is 2 and the codebook index for the first PMI is the encoded value minus 8, the encoded value is integer ranging from 8 to 15, when the RI is 3 and a first precoding matrix corresponding to the first PMI is an identity matrix.

公开(公告)号：US10368363B2

公开(公告)日：2019-07-30

申请号：US15565804

申请日：2016-04-18

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/12 ,  H04B7/0452 ,  H04W16/14 ,  H04W74/08 ,  H04B7/0404 ,  H04W74/00

Abstract: Disclosed are an uplink data transmission method in a wireless communication system and a device therefor. Particularly, a method for transmitting uplink data in an unlicensed band by a user equipment (UE) in a wireless communication system may comprise the steps of: receiving, from a base station, uplink scheduling information within a cell operating in an unlicensed band; sensing a channel of the cell; transmitting a reservation signal when the channel is sensed to be in an idle state; and transmitting, to the base station, uplink data in a wireless resource allocated on the basis of the uplink scheduling information, wherein the channel is sensed to be in the idle state when energy detected, except for the reservation signal transmitted from another UE that is co-scheduled along with the UE for uplink multi-user multiple input multiple output (UL MU-MIMO) transmission, is smaller than a predetermined threshold value.

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：US10193669B2

公开(公告)日：2019-01-29

申请号：US15834769

申请日：2017-12-07

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Kijun Kim ,  Hanbyul Seo ,  Hanjun Park ,  Byounghoon Kim ,  Hyungtae Kim ,  Hyunho Lee

IPC: H04L5/00 ,  H04B17/382 ,  H04B7/024 ,  H04W72/04 ,  H04B7/06 ,  H04W92/20

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and device for performing or supporting NIB coordinated multi-point (CoMP) transmission in a wireless communication system. The method for performing NIB CoMP transmission in the wireless communication system according to an embodiment of the present invention may include: transmitting a first-type signal including one or more sets of first CoMP hypotheses from a first network node to a second network node; and receiving at the first network node a second-type signal including one or more sets of second CoMP hypotheses from the second network node. The first-type signal and the second-type signal are defined as having the same information format, and the first-type signal or the second-type signal may be identified based on a specific bit of the information format.

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：US10033449B2

公开(公告)日：2018-07-24

申请号：US15534278

申请日：2015-12-11

Applicant: LG ELECTRONICS INC.

Inventor： Hyunho Lee ,  Hanjun Park ,  Jonghyun Park ,  Hyukjin Chae ,  Youngtae Kim

IPC: H04B7/06 ,  H04W24/10 ,  H04B17/24 ,  H04B7/0417

Abstract: A method for receiving a reference signal for position determination in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving configuration information regarding a positioning reference signal (PRS), the method thereof being performed by user equipment (UE) and that is transmitted from a plurality of antenna ports, wherein the PRS related configuration information includes information regarding a beam direction applied to the PRS; measuring each PRS group to which the same beam direction related information is applied; and reporting the measurement results of the respective PRS group to a serving base station.

公开(公告)号：US10027384B2

公开(公告)日：2018-07-17

申请号：US15452395

申请日：2017-03-07

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Kijun Kim ,  Hanjun Park ,  Hanbyul Seo ,  Byounghoon Kim ,  Hyungtae Kim

IPC: H04B7/024 ,  H04B7/06 ,  H04W72/04

Abstract: The present invention relates to a wireless communication system, and more particularly, to a method and device for performing or supporting NIB coordinated multi-point (CoMP) transmission in a wireless communication system. The method and device for performing NIB CoMP transmission in the wireless communication system according to an embodiment of the present invention include: receiving signaling comprising at least one CoMP hypothesis set and at least one benefit metric from a first network node, at a second network node; and performing CoMP transmission based on the at least one CoMP hypothesis set, at the second network node. The at least one CoMP hypothesis set comprises information on hypothetical operation of CoMP network nodes.