公开(公告)号：US10383135B2

公开(公告)日：2019-08-13

申请号：US15327359

申请日：2015-07-23

Applicant: LG ELECTRONICS INC.

Inventor： Seonwook Kim ,  Hanbyul Seo ,  Inkwon Seo ,  Seungmin Lee ,  Youngtae Kim

IPC: H04W72/12 ,  H04W28/02 ,  H04W28/06 ,  H04W88/04 ,  H04W76/14 ,  H04L5/00 ,  H04L12/741 ,  H04W40/22 ,  H04W56/00 ,  H04B7/26

Abstract: The present invention relates to methods for efficiently relaying device to device (D2D) data utilizing a relay terminal (rUE) in a wireless access system supporting D2D communication, and apparatuses for supporting the methods. As one example of the present invention, a method for relaying D2D data by a relay terminal in a wireless access system supporting D2D communication may comprise the steps of: receiving a scheduling allocation (SA) signal for allocating a resource area where the D2D data are transmitted; receiving at least one D2D data; and relaying, from among the at least one D2D data, only the first D2D data received from a terminal out of coverage. The first D2D data among the at least one D2D data can be detected on the basis of a SA signal and a medium access control header relating to the at least one D2D data.

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：US10243639B2

公开(公告)日：2019-03-26

申请号：US15545209

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Hanbyul Seo ,  Hyukjin Chae ,  Kijun Kim

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/06 ,  H04B7/0456 ,  H04L5/00 ,  H04W72/04 ,  H04B7/024

Abstract: Disclosed is a method for supporting uplink multiple-input and multiple-output (MIMO) in a wireless communication system. A method for transmitting data according to the present invention comprises the steps of: mapping, to first orthogonal frequency division multiplexing (OFDM) symbols within a subframe, first demodulation reference signals (DMRSs) corresponding to a first antenna port and a second DMRSs corresponding to a second antenna port; mapping, to second OFDM symbols except the first OFDM symbols within the subframe, first data corresponding to the first antenna port and second data corresponding to the second antenna port; and transmitting the subframe by using resources allocated to the uplink, wherein predetermined precodings are applied to the first data and the second data, and the predetermined precodings may be changed according to the index of the second OFDM symbols.

公开(公告)号：US10224993B2

公开(公告)日：2019-03-05

申请号：US15306741

申请日：2015-05-04

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Kijun Kim ,  Jonghyun Park ,  Yunjung Yi

IPC: H04B7/06 ,  H04B7/10

Abstract: The present invention relates to a method and an apparatus for beamforming by a base station in a wireless communication system supporting multiple antennas. Particularly, the method comprises the steps of: determining a first coverage on the basis of long-term feedback information; setting multiple logical antenna ports for the first coverage on the basis of a combination of multiple horizontal beams and multiple vertical beams; and transmitting a channel state information-reference signal to a terminal according to a precoding matrix index which is set on the basis of the multiple antenna ports, wherein the multiple horizontal beams respectively correspond to multiple second coverages divided into horizontal domains on the basis of the first coverage, and the multiple vertical beams respectively correspond to multiple third coverages divided into vertical domains on the basis of the first coverage.

公开(公告)号：US10205494B2

公开(公告)日：2019-02-12

申请号：US15322567

申请日：2015-07-30

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Inkwon Seo ,  Jinyup Hwang ,  Seungmin Lee ,  Kijun Kim

IPC: H04B7/0456 ,  H04W76/14 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04L25/02 ,  H04L1/00

Abstract: Disclosed is a method for supporting device-to-device (D2D) communication to which multiple-input and multiple-output (MIMO) technology is applied in a wireless communication system. The method for supporting D2D communication includes receiving, from a transmission end, a resource configuration associated with transmission and reception of a first reference signal and D2D data of a D2D resource pool in an uplink resource; transmitting, to the transmission end, the first reference signal related to at least one first antenna port of the D2D terminal through an uplink resource according to the resource configuration; receiving, through the uplink resource, D2D data and a second reference signal from at least one second antenna port among a plurality of second antenna ports of the transmission end determined based on the first reference signal; and decoding the received D2D data based on a precoding applied to the second reference signal.

公开(公告)号：US10181964B2

公开(公告)日：2019-01-15

申请号：US15121465

申请日：2015-03-02

Applicant: LG ELECTRONICS INC.

Inventor： Kunil Yum ,  Youngtae Kim ,  Kijun Kim ,  Jonghyun Park

IPC: H04B7/06 ,  H04L25/02 ,  H04B17/24 ,  H04B17/345 ,  H04B17/309

Abstract: A method for reporting a channel state of a terminal performed by the terminal is disclosed. The method includes receiving a channel state information-reference signal (CSI-RS) configuration for verifying validity of channel estimation using only a part of two-dimensional (2D) array antenna ports configured for the terminal, verifying the validity of the channel estimation using CSI-RS configuration and obtaining a channel estimation validity indicator, and transmitting the channel estimation validity indicator and channel state information based on the channel estimation validity indicator.

公开(公告)号：US10141987B2

公开(公告)日：2018-11-27

申请号：US15569613

申请日：2016-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Kijun Kim ,  Yunjung Yi ,  Jonghyun Park

IPC: H04L1/02 ,  H04B7/0417 ,  H04B7/04 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0456

Abstract: The present invention relates to a method and apparatus for feeding back, by a terminal, reference signal information in wireless communication using a two-dimensional active antenna system including a plurality of antennas. Particularly, the method for feeding back reference signal information comprises the steps of: receiving, from a base station, a reference signal configuration including identifiers of a plurality of reference signals having a first reference signal set and a second reference signal set; receiving the plurality of reference signals to which the precoding is applied; measuring reference signal received power (RSRP) for each of the plurality of reference signals; and transmitting, to the base station, information on at least a part of the first reference signal set and information on at least a part of the second reference signal set, on the basis of the measured RSRP. In addition, the precoding for the terminal is determined on the basis of the information on at least a part of the first reference signal set, and the interference information for the terminal can be determined on the basis of the information on at least a part of the second reference signal set.

公开(公告)号：US10075972B2

公开(公告)日：2018-09-11

申请号：US15033049

申请日：2014-10-28

Applicant: LG ELECTRONICS INC.

Inventor： Hyukjin Chae ,  Hakseong Kim ,  Hanbyul Seo ,  Jihyun Lee ,  Kijun Kim ,  Youngtae Kim

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04W76/14 ,  H04L12/911

CPC classification number: H04W72/1263 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0091 ,  H04L47/70 ,  H04W72/0446 ,  H04W72/048 ,  H04W72/1289 ,  H04W76/14

Abstract: Disclosed is a method for transmission and reception of a device-to-device (D2D) signal by a terminal in a wireless communication system. The method for transmission and reception of a D2D signal, according to an embodiment of the present invention, comprises the steps of: receiving a scheduling assignment comprising a resources pattern for transmission (RPT); and receiving a D2D signal in a subframe indicated in the RPT, wherein each bit of the RPT indicates whether or not the D2D signal is permitted to be transmitted in the subframe within a scheduling assignment period, and wherein, if the number of the subframes comprised in the scheduling assignment period is greater than the number of the bits of the RPT, at least one bit of the RPT indicates whether or not the D2D signal is permitted to be transmitted in two or more subframes.

公开(公告)号：US10063357B2

公开(公告)日：2018-08-28

申请号：US15104431

申请日：2014-12-18

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Kijun Kim ,  Inkwon Seo ,  Hyukjin Chae ,  Jonghyun Park ,  Hanjun Park

IPC: H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04W36/00

CPC classification number: H04L5/0048 ,  H04B7/0469 ,  H04B7/0632 ,  H04B7/0634 ,  H04L5/0023 ,  H04L5/0055 ,  H04W36/0055

Abstract: The present invention relates to a method and an apparatus for transmitting a reference signal in a multiple antenna-supporting wireless communication system and, more specifically, to a method for a serving cell to support reference signal transmission of a neighbor cell in a multiple antenna-supporting wireless communication system, the method comprising: transmitting a sounding reference signal (SRS) configuration to a terminal; transmitting, to the neighbor cell, the SRS configuration and a terminal-related position information; and receiving, from the neighbor cell, an SRS-based first channel quality value which is estimated according to the SRS configuration, wherein the first channel quality value is estimated by applying a receiving vector according to the terminal-related position information.

公开(公告)号：US20180176043A1

公开(公告)日：2018-06-21

申请号：US15735308

申请日：2016-06-13

Applicant: LG Electronics Inc.

Inventor： Youngtae Kim ,  Hanbyul Seo ,  Hyukjin Chae ,  Joonkui Ahn

IPC: H04L25/02 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L25/0224 ,  G08G1/161 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/0057 ,  H04L5/16 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675 ,  H04L2027/0026 ,  H04W4/46 ,  H04W56/0045

Abstract: The present invention relates to a method and an apparatus for receiving a reference signal by a vehicle-to-vehicle (V2V) device for V2V communication in a wireless communication system. Specifically, the present invention comprising the steps of: receiving configuration with respect to one or more reference signals that are shared in a first transmission time interval (TTI) and a second TTI following the first TTI; and receiving the reference signals according to the configuration, wherein the first TTI and the second TTI are composed of orthogonal frequency division multiplexing (OFDM) symbols that are shorter than a subframe, and are configured such that the subframe matches with a symbol boundary.