公开(公告)号：US10250302B2

公开(公告)日：2019-04-02

申请号：US15510844

申请日：2015-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Kijun Kim ,  Hyungtae Kim ,  Jonghyun Park ,  Hyukjin Chae

IPC: H04B7/0413 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/0456

Abstract: The present invention relates to a method and an apparatus for transmitting, by a base station, a reference signal in a wireless communication system supporting a multi-antenna consisting of a plurality of horizontal domain antennas and a plurality of vertical domain antennas. Specifically, the method comprises the steps of: configuring, as a cell-specific reference signal (CRS) port, M first antenna ports among a total of N antennas that the base station has (where N and M are positive integers, N>M); transmitting a CRS using the M first antenna ports and transmitting a demodulation reference signal (DM-RS) using O second antenna ports (where O is a positive integer, N>O), to a terminal; and receiving channel measurement information using the CRS and the DM-RS which is fed back from the terminal.

公开(公告)号：US10148299B2

公开(公告)日：2018-12-04

申请号：US15646483

申请日：2017-07-11

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim ,  Yunjung Yi ,  Byounghoon Kim ,  Hanjun Park ,  Hyunho Lee

IPC: H04B1/10 ,  H04B1/12

Abstract: A method for cancelling interference and receiving a signal by a user equipment in a wireless communication system, the method includes identifying assistance information for cancelling an interference signal transmitted from an interfering base station; cancelling the interference signal based on the assistance information; and receiving a desired signal from a serving base station, wherein the user equipment assumes a part of the assistance information for cancelling the interference signal as a limited value and then receives the interference signal, and wherein a modulation order of the interference signal as the part of the assistance information is smaller than or equal to a specific value as the limited value.

公开(公告)号：US10063395B2

公开(公告)日：2018-08-28

申请号：US15541237

申请日：2016-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kijun Kim ,  Hyungtae Kim ,  Jonghyun Park

IPC: H04L25/02 ,  H04B7/06

CPC classification number: H04L25/0242 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/065 ,  H04B7/10 ,  H04L5/005 ,  H04L25/02 ,  H04L25/0204 ,  H04L25/0228

Abstract: A method for estimating a channel status by a base station in a wireless communication system according to an embodiment of the present invention comprises the steps of: obtaining an uplink channel matrix by using a sounding reference signal (SRS) received from a terminal; transmitting a channel state information-reference signal (CSI-RS) through at least some antenna devices in a two-dimensional antenna array of the base station; receiving a channel quality indicator (CQI) calculated on the basis of the CSI-RS transmission; and obtaining, through a predetermined correction factor obtained on the basis of the CQI and the uplink channel matrix, a downlink channel matrix for the entire two-dimensional antenna array comprising the remaining antenna devices through which the CSI-RS is not transmitted.

公开(公告)号：US10009128B2

公开(公告)日：2018-06-26

申请号：US15114705

申请日：2015-03-03

Applicant: LG ELECTRONICS INC.

Inventor： Hyunho Lee ,  Kijun Kim ,  Hyungtae Kim ,  Hanjun Park ,  Kunil Yum

IPC: H04B17/309 ,  H04B17/382 ,  H04B7/06 ,  H04W24/10

CPC classification number: H04B17/309 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B17/382 ,  H04J11/005 ,  H04W24/10

Abstract: Provided is a method for reporting a channel state, on which an interference cancellation performance is reflected, in a wireless communication system according to an embodiment of the present invention. The method may include: receiving, from a serving cell, a configuration for a channel state information (CSI) process (hereinafter, referred to as “enhanced CSI process”) for reporting the channel state on which the interference cancellation performance is reflected; receiving a signal at a CSI-interference measurement (CSI-IM) resource according to the enhanced CSI process; and calculating a value of the reporting of the channel state on which the interference cancellation performance is reflected, by removing an interference signal, which is from a specific interference cell among one or more interference cells.

公开(公告)号：US09986572B2

公开(公告)日：2018-05-29

申请号：US15313413

申请日：2015-07-21

Applicant: LG ELECTRONICS INC.

Inventor： Kijun Kim ,  Hyungtae Kim

IPC: H04W24/00 ,  H04W72/08 ,  H04W24/10 ,  H04B17/24 ,  H04B17/382 ,  H04B7/06 ,  H04L1/00 ,  H04L12/931

CPC classification number: H04W72/082 ,  H04B7/0626 ,  H04B17/24 ,  H04B17/382 ,  H04L1/0015 ,  H04L1/0026 ,  H04L5/005 ,  H04L5/0057 ,  H04L5/0073 ,  H04L49/20 ,  H04W24/10 ,  H04W52/243 ,  H04W52/40

Abstract: A method for reporting channel state information by a UE having an interference removal ability in a wireless communication system according to an embodiment of the present invention may comprise the steps of: receiving, from a serving cell, information for removal of interference by an adjacent cell; removing the interference or calculating the channel state information and transmitting the calculated channel state to the serving cell, wherein the information for removal of interference may comprise information indicating whether interference by a transmission signal of the adjacent cell exists in a CSI-interference measurement (IM) resource of the serving cell.

公开(公告)号：US09893856B2

公开(公告)日：2018-02-13

申请号：US15468398

申请日：2017-03-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/024 ,  H04B7/06

CPC classification number: H04L5/0048 ,  H04B7/024 ,  H04B7/0626 ,  H04L5/0005 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0094 ,  H04W72/042 ,  H04W72/0446

Abstract: The present invention relates to a wireless communication system. A method for receiving data by a user equipment (UE) in a cooperative multi-point (CoMP) wireless communication system includes receiving information indicating a transmission base station (BS) that actually transmits data among a plurality of BSs that participate in CoMP, receiving information about zero-power channel state information-reference signal (CSI-RS) of each of the plural BSs, and assuming that data is not mapped to a resource element of zero-power CSI-RS corresponding to the transmission BS and receiving the data through a physical downlink control channel (PDSCH).

公开(公告)号：US09806849B2

公开(公告)日：2017-10-31

申请号：US14957369

申请日：2015-12-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jonghyun Park

IPC: H04L1/00 ,  H04L5/00 ,  H04W76/04 ,  H04B7/06

CPC classification number: H04L1/0028 ,  H04B7/0626 ,  H04L1/0026 ,  H04L1/0031 ,  H04L5/005 ,  H04L5/0057 ,  H04W76/28

Abstract: A method of reporting channel state information (CSI) to a base station by a terminal in a wireless communication system is disclosed. Specifically, the method includes configuring feedback chains corresponding to a plurality of CSI-reference signals (RSs) through upper layer signaling, receiving the plurality of CSI-RSs from the base station, calculating a complete channel quality indicator (CQI) for a whole channel using the plurality of CSI-RSs and dividing the complete CQI into partial CQIs corresponding to the respective feedback chains, and reporting CSI items including the partial CQIs to the base station through the feedback chains.

公开(公告)号：US09787450B2

公开(公告)日：2017-10-10

申请号：US14383216

申请日：2013-08-28

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim ,  Jonghyun Park ,  Hanbyul Seo ,  Bonghoe Kim

IPC: H04W24/10 ,  H04B7/04 ,  H04L5/00 ,  H04B7/0417

CPC classification number: H04L5/0051 ,  H04B7/0417 ,  H04B7/0486 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0073 ,  H04L5/0091

Abstract: The present invention relates to a wireless communication system. A method for estimating a channel by a user equipment (UE) in a wireless communication system includes receiving information about at least one channel station information (CSI) configuration for reporting CSI of one of a plurality of serving cells, determining that the same precoding matrix is applied to a plurality of resource blocks when all of the at least one CSI configuration is configured to report a precoding matrix indicator (PMI) and a rank indicator (RI), and determining that the precoding matrix is applied to one resource block when CSI configuration configured not to report the PMI and the RI is present among the at least one CSI configuration, and estimating a channel based on a result of the determination.

公开(公告)号：US09668275B2

公开(公告)日：2017-05-30

申请号：US14626107

申请日：2015-02-19

Applicant: LG Electronics Inc.

Inventor： Hanjun Park ,  Kijun Kim ,  Hyungtae Kim ,  Yunjung Yi ,  Suckchel Yang

IPC: H04W72/12 ,  H04L5/00

CPC classification number: H04W72/1231 ,  H04L5/0035 ,  H04L5/0055 ,  H04L5/0073 ,  H04W72/1273

Abstract: Disclosed is a method for reporting a channel state in a wireless communication system, the method performed by a terminal and including reporting channel state information (CSI) to a base station (BS), transmitting CSI correction information for correcting the reported CSI, to the BS, and receiving a downlink channel scheduled based on the CSI correction information, wherein the CSI correction information indicates a change in channel state due to dynamic interference.

公开(公告)号：US09660780B2

公开(公告)日：2017-05-23

申请号：US15203281

申请日：2016-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jonghyun Park ,  Kijun Kim

IPC: H04L5/00 ,  H04B7/04 ,  H04B7/0417 ,  H04B7/06 ,  H04W76/04 ,  H04W88/08

CPC classification number: H04W24/10 ,  H04B7/024 ,  H04B7/04 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0658 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0082 ,  H04L5/0091 ,  H04L5/0094 ,  H04W76/27 ,  H04W88/08

Abstract: The present invention relates to a method for receiving a reference CSI configuration information and a following CSI configuration information which is configured to report a same RI (Rank Indicator) as the reference CSI configuration information, receiving a first CSI-RS (Channel State Information-Resource Signal) configuration information associated with the reference CSI configuration and a second CSI-RS configuration information associated with the following CSI configuration, number of CSI-RS antenna ports according to the second CSI-RS configuration information is same as number of CSI-RS antenna ports according to the first CSI-RS configuration information; and transmitting CSI determined based on at least one of the first CSI-RS configuration information and the second CSI-RS configuration information.