公开(公告)号：US10158411B2

公开(公告)日：2018-12-18

申请号：US15721068

申请日：2017-09-29

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim ,  Hyunho Lee

IPC: H04B7/06 ,  H04B7/04 ,  H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L25/03 ,  H04B7/0456

Abstract: The present invention relates to a wireless communication system. According to one embodiment of the present invention, a method for transmitting, by a terminal, channel state information (CSI) in a wireless communication system comprises the steps of: subsampling a code book for four antenna ports; and feeding back the CSI on the basis of the subsampled code book, wherein the CSI includes a rank indicator (RI) reported together with a precoding type indicator (PTI), and if the RI is greater than 2, the PTI is set to one.

公开(公告)号：US10153879B2

公开(公告)日：2018-12-11

申请号：US15341464

申请日：2016-11-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim ,  Jonghyun Park

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

Abstract: The present specification proposes a method of reporting channel quality information (CQI) by a user equipment (UE) to a base station (BS) in a wireless communication system. Specifically, the method includes the step of receiving a cell specific reference signal from the BS; calculating the CQI using the cell specific reference signal on the assumption that a specific number of resource elements (REs) for a demodulation-reference signal (DM-RS) exists; and reporting the CQI to the BS. Especially, if a most recent reported rank is 3 or 4, the specific number of REs for the DM-RS is assumed as a specific value, which is different from a minimum number of REs for the DM-RS or a maximum number of REs for the DM-RS.

公开(公告)号：US10098105B2

公开(公告)日：2018-10-09

申请号：US15263579

申请日：2016-09-13

Applicant: LG Electronics Inc.

Inventor： Hyungtae Kim ,  Jonghyun Park ,  Kijun Kim

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04W88/06

Abstract: The present specification proposes a method for a user equipment to receive a DM-RS (demodulation-reference signal) from a base station in a multi-antenna-based wireless communication system. Specifically, the method includes the step of configuring a plurality of parameter sets via a higher layer signaling, receiving a downlink control signal including information on an antenna port for the DM-RS and a number of layers, and receiving the DM-RS and a downlink data signal corresponding to the DM-RS based on the downlink control signal. In this case, the downlink control signal comprises an indicator for indicating one of a plurality of the parameter sets and each of a plurality of the parameter sets comprises information indicating a scrambling identifier of the DM-RS.

公开(公告)号：US10050757B2

公开(公告)日：2018-08-14

申请号：US15142449

申请日：2016-04-29

Applicant: LG ELECTRONICS INC.

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

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

Abstract: The present invention relates to a wireless communication system. A method for reporting CSI (Channel State Information) in a cooperative multi-point (CoMP) wireless communication system, the method performed by a user equipment (UE) and comprising receiving first resource configuration information for a CSI-RS (Channel-State Information-Reference Signal) and second resource configuration information for interference measurement; and calculating CSI using the first resource configuration information and the second resource configuration information, the CSI being for one or more base stations (BSs) among a plurality of BSs participating the COMP, wherein an interference measurement resource according to the second resource configuration information exists in a union of zero-power CSI-RS resources of each of the plurality of BSs.

公开(公告)号：US09986540B2

公开(公告)日：2018-05-29

申请号：US15113405

申请日：2015-03-11

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Hyunho Lee

IPC: H04W72/08 ,  H04W72/04 ,  H04B17/24 ,  H04B17/336 ,  H04B7/04 ,  H04L5/00 ,  H04W52/24

CPC classification number: H04W72/0413 ,  H04B7/0478 ,  H04B17/24 ,  H04B17/336 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0057 ,  H04W52/243 ,  H04W72/082

Abstract: The present invention relates to a wireless communication system. A method of removing interference and receiving data by means of a terminal in a wireless communication system according to an embodiment of the present invention may include: transmitting first generic channel state information (CSI) generated based on required signal power from a serving cell; transmitting second generic CSI generated based on interference signal power from an interference cell; and receiving data generated based on CSI recalculated by using an interference condition that has changed after the transmission of the first and second generic CSI.

公开(公告)号：US09973253B2

公开(公告)日：2018-05-15

申请号：US15101889

申请日：2014-12-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06 ,  H04L1/00 ,  H04L5/00 ,  H04W24/10

CPC classification number: H04B7/066 ,  H04B7/0478 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0645 ,  H04B7/065 ,  H04L1/0026 ,  H04L1/0027 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0057 ,  H04W24/10

Abstract: The present invention relates to a method for a first terminal to report channel state information (CSI) in a wireless communication system, the method comprising the steps of: receiving, from a base station, an allocation of a group CSI report setting associated with a terminal group including the first terminal; broadcasting the group CSI report setting to the terminal group; and reporting group CSI to the base station, wherein the terminal group consists of the first terminal and at least one second terminal, and the group CSI report setting defines, as the group CSI, the CSI of the first terminal corresponding to a part of the CSI about each of a plurality of terminals constituting the terminal group.

公开(公告)号：US20180123755A1

公开(公告)日：2018-05-03

申请号：US15559503

申请日：2016-03-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04B7/06

CPC classification number: H04L5/0048 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0057

Abstract: Disclosed is a method by which a terminal transmits channel status information (CSI) feedback in a wireless communication system. Particularly, the method for transmitting CSI feedback comprises the steps of: setting, through an upper layer signal, one CSI process having a periodic reference signal and an aperiodic reference signal; receiving, from a base station, an aperiodic CSI feedback request message related to the one CSI process; generating, in response to the aperiodic CSI feedback request message, aperiodic CSI feedback on the basis of the aperiodic reference signal; and transmitting the aperiodic CSI feedback to the base station.

公开(公告)号：US09918249B2

公开(公告)日：2018-03-13

申请号：US15101381

申请日：2014-12-24

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim ,  Inkwon Seo ,  Jonghyun Park ,  Yunjung Yi ,  Youngtae Kim ,  Kunil Yum

IPC: H04W4/00 ,  H04W28/04 ,  H04B17/345 ,  H04L5/00 ,  H04W24/08 ,  H04W72/08

CPC classification number: H04W28/04 ,  H04B17/345 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0073 ,  H04W24/08 ,  H04W72/085

Abstract: The present invention relates to a wireless communication system. A method for a terminal for removing interference and receiving a signal in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving configuration information for channel status information which has utilized interference measurements; and on the basis of the configuration information, measuring the interference from an interfering cell, and on the basis of the measured interference, measuring the channel status information from an interference measurement resource (IMR), wherein interference can be measured, in a resource block in which an IMR exists, on the basis of whether the interfering cell is transmitting data and the type of the signal transmitted from the IMR.

公开(公告)号：US09900789B2

公开(公告)日：2018-02-20

申请号：US14906802

申请日：2014-12-11

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Kijun Kim ,  Hyungtae Kim ,  Inkwon Seo ,  Seungmin Lee ,  Youngtae Kim ,  Kunil Yum

IPC: H04W72/04 ,  H04W72/08 ,  H04W24/02 ,  H04B15/02 ,  H04L25/03 ,  H04J11/00 ,  H04W48/16

CPC classification number: H04W24/02 ,  H04B15/02 ,  H04J11/0053 ,  H04L25/0328 ,  H04W48/16 ,  H04W72/042 ,  H04W72/082

Abstract: In this application, a method for a terminal cancelling interference from a neighboring cell is disclosed. More specifically, the method comprises the steps of: receiving one or more interference cancellation assistance information indicating one of a plurality of parameter combinations for detecting an interference signal from the neighboring cell; detecting an interference signal from the neighboring cell, based on the one or more interference cancellation assistance information and cancelling the interference signal in signals received from a serving cell, wherein the interference signal is a downlink data channel of the neighboring cell or a downlink control channel of the neighboring cell, and the plurality of parameter combinations is configured through a higher layer.

公开(公告)号：US09825682B2

公开(公告)日：2017-11-21

申请号：US14409924

申请日：2013-07-02

Applicant: LG ELECTRONICS INC.

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

IPC: H04L12/26 ,  H04B7/06 ,  H04B7/0413 ,  H04B7/10 ,  H04L5/00 ,  H04B7/04

CPC classification number: H04B7/0626 ,  H04B7/0413 ,  H04B7/0478 ,  H04B7/0619 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/10 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0057

Abstract: A method and user equipment (UE) are provided for reporting channel state information (CSI). The UE supports massive multiple-input multiple-output (MIMO) technology in a wireless communication system. The UE receives, from an eNode B, M port CSI reference signals through a plurality of antenna ports composed of an L×M array, where L corresponds to a number of antenna ports in a horizontal direction and M corresponds to a number of antenna ports in a vertical direction. The UE selects a vertical antenna port by comparing energy of the M port CSI reference signals, and calculates a rank indicator (RI), precoding matrix indicator (PMI), and a channel quality indicator (CQI) of the selected vertical antenna port based on the M port CSI reference signals. The UE transmits the calculated RI, the calculated PMI and the calculated CQI to the eNode B.