公开(公告)号：US10476649B2

公开(公告)日：2019-11-12

申请号：US15516793

申请日：2016-01-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L5/14 ,  H04B7/06 ,  H04B7/0417

Abstract: Disclosed is a method by which a terminal reports channel quality information (CQI) to a base station in a multi-antenna-based wireless communication system. Particularly, the method comprises the steps of: receiving, through an upper layer, the reference signal configuration defined by P number of antenna ports; receiving, through M number of antenna ports, reference signals from the base station; grouping the P number of antenna ports into antenna port groups formed of the M number of antenna ports; calculating CQIs by using the reference signal corresponding to each of the antenna port groups on the basis of the assumption that predefined precoders are applied to the reference signals; and reporting, to the base station, N number of CQIs among the calculated CQIs.

公开(公告)号：US10470194B2

公开(公告)日：2019-11-05

申请号：US15558532

申请日：2016-04-08

Applicant: LG ELECTRONICS INC.

Inventor： Kijun Kim ,  Hyungtae Kim ,  Yunjung Yi

IPC: H04W4/00 ,  H04W72/08 ,  H04B7/26 ,  H04W72/04 ,  H04J11/00 ,  H04W88/08 ,  H04W72/12

Abstract: A method for receiving interference downlink control information of a terminal equipped with an interference cancellation capability in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving, from a base station, information regarding a transmission mode or method of candidate interference downlink control information; receiving, from the base station, as the transmission mode or method of the interference downlink control information, information indicating one from among the transmission mode or method of candidate interference downlink control information, or a transmission mode or method identical to the downlink control information for the terminal itself; and detecting interference downlink control information by searching only the downlink control information of the indicated transmission mode or method of the interference downlink control information.

公开(公告)号：US10469225B2

公开(公告)日：2019-11-05

申请号：US15759624

申请日：2016-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Kijun Kim ,  Hyungtae Kim ,  Jonghyun Park

IPC: H04L5/00 ,  H04B7/0452

Abstract: The present invention relates to a wireless communication system, and specifically provides a method for transmitting and receiving a demodulation reference signal (DMRS), and an apparatus using the same. More specifically, the present invention provides a method for transmitting and receiving a DMRS and an apparatus using the same, wherein a base station allocates a Walsh sequence for each antenna port to the DMRS for each antenna port using a method that is different from conventional methods, and thereby increases the number of user equipment that are MU-MIMO paired compared to the past, and can satisfy orthogonality between four DMRS sequences in both time and frequency domains so that user equipment receiving the DMRS can efficiently estimate a channel.

公开(公告)号：US10439700B2

公开(公告)日：2019-10-08

申请号：US16202562

申请日：2018-11-28

Applicant: LG Electronics Inc.

Inventor： Hyungtae Kim ,  Jiwon Kang

IPC: H04B7/06 ,  H04W72/04 ,  H04B7/024 ,  H04L5/00 ,  H04W24/10 ,  H04B7/0456 ,  H04W76/27

Abstract: The present invention provides a method of reporting, by a UE, CSI in a wireless communication system, the method comprising: receiving, from a base station, a RRC signaling that comprises a plurality of reporting settings, wherein each reporting setting comprises a corresponding list of first values representing time offsets for transmitting a CSI report, forming a plurality of lists of first values; receiving, from the base station, DCI triggering the CSI report, wherein the DCI comprises an index value related to a time at which to transmit the CSI report on a PUSCH; determining, based on the DCI, a plurality of list entries; determining a second value that is largest among the plurality of list entries; and transmitting, to the base station, the CSI report on the PUSCH based on the second value.

公开(公告)号：US10439692B2

公开(公告)日：2019-10-08

申请号：US14767825

申请日：2014-06-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Hanjun Park

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

Abstract: The present invention relates to a wireless communication system. A method for transmitting CSI by a terminal in a wireless communication system according to an embodiment of the present invention comprises: subsampling a first codebook associated with a first PMI and a second codebook associated with a second PMI according to a report sub-mode for four antenna ports; and reporting channel state information based on the subsampled first codebook and the subsampled second codebook, wherein a first codebook index for the first PMI may be determined as one of 0, 4, 8, and 12 when RI is 1 or 2, a second codebook index for the second PMI may be determined as one of 0, 2, 8, and 10 when the RI is 1, and the second codebook index for the second PMI may be determined as one of 0, 1, 4, and 5 when the RI is 2.

公开(公告)号：US10432345B2

公开(公告)日：2019-10-01

申请号：US15560828

申请日：2016-03-22

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin Shin ,  Kijun Kim ,  Hyungtae Kim ,  Inkwon Seo ,  Yunjung Yi

IPC: H04L1/00 ,  H04L27/00 ,  H04L27/26 ,  H04W52/14 ,  H04L5/00 ,  H04L27/34

Abstract: The present specification relates to a method for transmitting and receiving data using non-orthogonal multiple access in a wireless communication system, which is performed by a base station, the method comprising: configuring a first modulation scheme and first transmission power for a first signal to be transmitted to a first terminal; configuring a second modulation scheme and second transmission power for a second signal to be transmitted to a second terminal; transmitting the first signal and the second signal through the same time-frequency resource; and transmitting, to the second terminal, control information related to the cancellation of interference caused by the first signal.

公开(公告)号：US10412606B2

公开(公告)日：2019-09-10

申请号：US15961124

申请日：2018-04-24

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Hanbyul Seo

IPC: H04W24/02 ,  H04B7/024 ,  H04B7/06 ,  H04L5/00 ,  H04L1/20

Abstract: A method of reporting channel state information (CSI) by a user equipment (UE) in a wireless communication system includes receiving, from a base station, radio resource control (RRC) information including multiple CSI-reference signal resource element (CSI-RS RE) configurations, obtaining CSI based on the multiple CSI-RS RE configurations, and transmitting the CSI to the base station, wherein the RRC information further includes a time resource configuration that is commonly applied to the multiple CSI-RS RE configurations, and wherein the CSI corresponds to aggregated CSI and the UE obtains the aggregated CSI by using the multiple CSI-RS RE configurations which are aggregated within a same time resource indicated by the time resource configuration.

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.