公开(公告)号：US09900068B2

公开(公告)日：2018-02-20

申请号：US14759397

申请日：2014-02-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04L12/28 ,  H04B7/04 ,  H04L5/00 ,  H04B7/06 ,  H04W24/10

CPC classification number: H04B7/0469 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/0057 ,  H04W24/10

Abstract: A method for reporting the channel state information for a 3-dimensional beam forming in a wireless communications system. A method for transmitting the channel state information (CSI) in a wireless communications system includes the steps of: receiving a reference signal from a base station supporting a 2-dimensional antenna array; determining the CSI based on the reference signal; and transmitting the determined CSI to the base station. The CSI includes the CSI set for each of T beam candidates defined in one dimension of the 2-dimensional antenna array. The CSI set includes at least one of the rank index (RI) in the one dimension, the pre-coding matrix (PMI) index in the one dimension, the RI in the two dimensions, the PMI in the two dimensions, and the channel quality index (CQI). Here, the RI in the two dimensions is variable for each of the T beam candidates.

公开(公告)号：US09774430B2

公开(公告)日：2017-09-26

申请号：US14718846

申请日：2015-05-21

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun Park ,  Kijun Kim ,  Jonghyun Park ,  Youngtae Kim ,  Hyunho Lee

IPC: H04L5/00 ,  H04B7/04

CPC classification number: H04L5/0048 ,  H04B7/0478 ,  H04L5/0023 ,  H04L5/0035

Abstract: A method for estimating a channel transmitted through a 2-dimensional (2D) array antenna by a user equipment (UE) in a wireless communication system comprising calculating channel estimation values for each of horizontal and vertical direction antenna arrays of the 2D array antenna in a channel state information-reference signal (CSI-RS) resource using a discrete Fourier transform (DFT) based channel estimation scheme, wherein the channel estimation values are expressed as one or more non-zero channel taps due to multipath fading; deriving channel vectors for each of the horizontal direction antenna arrays and channel vectors for each of the vertical direction antenna arrays using L significant power sums of filtered channel taps; and calculating channel vectors of the 2D array antenna by operating Kronecker product of the channel vectors for each of the horizontal direction antenna arrays and the channel vectors for each of the vertical direction antenna arrays.

公开(公告)号：US20170111098A1

公开(公告)日：2017-04-20

申请号：US15309019

申请日：2015-05-29

Applicant: LG Electronics Inc.

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

IPC: H04B7/06

Abstract: The present invention relates to a method and device for measuring channel quality by a base station having a two-dimensional active antenna system including multiple antennas. Particularly, the method comprises: receiving channel state information (CSI) generated on the basis of a first reference signal relating to a part of multiple antennas, from a terminal; selecting a precoding and a rank based on a precoding matrix indicator (PMI) and a rank indicator (RI) of the received CSI; generating a port by applying the selected precoding and the selected rank; through the generated port, transmitting, to the terminal, a physical downlink shared channel (PDSCH) and a demodulation-reference signal (DM-RS) configured for the terminal; and receiving, from the terminal, a channel quality indication (CQI) feedback for reducing a mismatch for the CQI of the CSI, wherein the CQI feedback may be generated based on the DM-RS.

公开(公告)号：US09515711B2

公开(公告)日：2016-12-06

申请号：US14892155

申请日：2014-07-17

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04B7/0456 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0647 ,  H04B7/066 ,  H04W72/042

Abstract: Provided is a method for receiving a downlink signal in a wireless communication system, the method comprising: transmitting, by a user equipment (UE), information on vertical angle restriction to be used for a precoding matrix which the UE desires to an eNodeB (eNB); and receiving, by the UE, a downlink signal precoded according to the information on vertical angle restriction, wherein the information on vertical angle restriction includes values indicating a lower limit angle and an upper limit angle for the precoding matrix.

Abstract translation: 提供了一种用于在无线通信系统中接收下行链路信号的方法，所述方法包括：由用户设备（UE）向UE发送用于UE期望的预编码矩阵的信息（eNB） ）; 以及由UE接收根据关于垂直角度限制的信息预编码的下行链路信号，其中关于垂直角度限制的信息包括指示预编码矩阵的下限角和上限角的值。

公开(公告)号：US09369193B2

公开(公告)日：2016-06-14

申请号：US14424880

申请日：2013-09-03

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Jonghyun Park ,  Kijun Kim ,  Hanbyul Seo

IPC: H04B7/06 ,  H04B7/04 ,  H04W24/10 ,  H04W72/04

CPC classification number: H04B7/0626 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0645 ,  H04B7/065 ,  H04W24/10 ,  H04W72/042

Abstract: The present invention relates to a method for feeding back channel state information with respect to downlink transmission of a terminal in a wireless communication system supporting multiple antennas. Particularly, the method comprises the steps of measuring a channel with respect to downlink transmission; and transmitting a precoding matrix indicator (PMI) to which a precoding matrix for multiple antennas is applied, on the basis of the channel measuring result, wherein the multiple antennas are defined as a group of N antenna (N>0, N is an integer), and the precoding matrix for multiple antennas is determined by a precoding matrix for the group of N antennas and a phase coefficient matrix with respect to the precoding matrix for the group of N antennas.

Abstract translation: 本发明涉及一种在支持多个天线的无线通信系统中对终端的下行链路传输反馈信道状态信息的方法。 特别地，该方法包括以下步骤：相对于下行链路传输测量信道; 并且根据所述信道测量结果发送应用了多个天线的预编码矩阵的预编码矩阵指示符（PMI），其中，所述多个天线被定义为N个天线的组（N> 0，N是整数 ），并且用于多个天线的预编码矩阵由N组天线的预编码矩阵和相对于N组天线的预编码矩阵的相位系数矩阵确定。

公开(公告)号：US20150229371A1

公开(公告)日：2015-08-13

申请号：US14423648

申请日：2013-09-16

Applicant: LG Electronics Inc.

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

IPC: H04B7/04 ,  H04L5/00

CPC classification number: H04B7/0417 ,  H04B7/04 ,  H04B7/046 ,  H04B7/0469 ,  H04B7/0478 ,  H04L5/0014

Abstract: The present invention relates to a method for transmitting a signal of a transmitting side in a wireless communication system that supports multiple antennas. More particularly, the method comprises the steps of: receiving, from a receiving side, feedback information for transmitting the signal of the transmitting side; and transmitting a signal to which a precoding matrix (W) is applied on the basis of the feedback information, wherein the precoding matrix (W) is expressed as a multiplication of two precoding matrices (W1 and W2), W1 is set to correspond to a plurality of antenna groups configured according to the feedback information, and W2 is configured such that the signal corresponding to the plurality of antenna groups can be transmitted in a mutual orthogonal way.

Abstract translation: 本发明涉及在支持多个天线的无线通信系统中发送发送侧的信号的方法。 更具体地，该方法包括以下步骤：从接收侧接收用于发送发送侧的信号的反馈信息; 并根据反馈信息发送应用了预编码矩阵（W）的信号，其中预编码矩阵（W）表示为两个预编码矩阵（W1和W2）的乘法，W1被设置为对应于 根据反馈信息配置的多个天线组，W2被配置为使得可以以相互正交的方式发送与多个天线组对应的信号。

公开(公告)号：US09088323B2

公开(公告)日：2015-07-21

申请号：US14150405

申请日：2014-01-08

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun Park ,  Youngtae Kim ,  Kijun Kim ,  Hyungtae Kim

IPC: H04B7/02 ,  H04B7/04 ,  H04W88/02 ,  H04W88/08 ,  H04L1/06

CPC classification number: H04B7/0486 ,  H04B7/0469 ,  H04B7/0478 ,  H04L1/06 ,  H04L1/0618 ,  H04W88/02 ,  H04W88/08

Abstract: A method of reporting a channel state to a base station supporting downlink multiple input multiple output in a wireless communication system includes measuring a downlink channel based on a downlink signal received from the base station, and reporting a codebook index for precoding of the downlink signal according to the measurement of the downlink channel. The codebook for precoding includes an improved codebook (hereinafter, referred to as an improved 4Tx codebook) having a dual structure composed of a codebook for wideband and a codebook for subband, for 4 transmit (4Tx) antenna ports, and the improved 4Tx codebook includes sub-codebooks obtained by sub-sampling the codebook for subband according to priority.

Abstract translation: 向在无线通信系统中支持下行链路多输入多输出的基站报告信道状态的方法包括基于从基站接收的下行链路信号测量下行信道，并根据下行链路信号的预编码报告码本索引， 到下行链路信道的测量。 用于预编码的码本包括用于4个发送（4Tx）天线端口的具有由宽带码本和子带码本组成的双重结构的改进码本（以下称为改进的4Tx码本），并且改进的4Tx码本包括 根据优先级对子带码本进行子采样而得到的子码本。

公开(公告)号：US12010640B2

公开(公告)日：2024-06-11

申请号：US18152692

申请日：2023-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Hakseong Kim ,  Inkwon Seo ,  Hanbyul Seo ,  Daewon Seo ,  Youngtae Kim ,  Hyukjin Chae

IPC: H04W56/00 ,  H04L5/00 ,  H04L27/26 ,  H04W76/14

CPC classification number: H04W56/0015 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0053 ,  H04L27/26035 ,  H04L27/2613 ,  H04L27/2692 ,  H04W76/14

Abstract: The present invention relates to a method and an apparatus which enable a terminal to transmit a signal for device-to-device (D2D) communication in a wireless communication system. Specifically, the present invention transmits a synchronization signal for D2D communication and a demodulation reference signal (DM-RS) for demodulation of the synchronization signal, wherein the base sequence of the demodulation reference signal is generated using a synchronization reference ID.

公开(公告)号：US11330566B2

公开(公告)日：2022-05-10

申请号：US16757576

申请日：2018-10-19

Applicant: LG ELECTRONICS INC.

Inventor： Heejin Kim ,  Hanbyul Seo ,  Seungmin Lee ,  Youngtae Kim

IPC: H04W72/04 ,  H04L1/18

Abstract: A method and a device for a sidelink in a wireless communication system are provided. A transmission terminal supporting a sidelink performs transmission/reception beam pairing by using control information for a sidelink. The transmission terminal and a reception terminal can find an optimum transmission/reception beam pair on the basis of a method of repeatedly transmitting/receiving control information by the sidelink. Therefore, an appropriate transmission/reception beam pair can be found without repeatedly transmitting a synchronization signal. The reception terminal can provide feedback information on the received control information to the transmission terminal. The transmission terminal can determine an optimum transmission/reception beam pair on the basis of the feedback information.

公开(公告)号：US11323987B2

公开(公告)日：2022-05-03

申请号：US16772139

申请日：2018-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae Kim ,  Yunjung Yi ,  Hyunho Lee ,  Duckhyun Bae

IPC: H04W72/04 ,  H04L5/00 ,  H04W52/28 ,  H04W72/12 ,  H04W88/06

Abstract: Disclosed in the present application is a method for transmitting a signal from a network by a terminal supporting dual connectivity between a first radio access technology (RAT) and a second RAT in a wireless communication system. Specifically, the method comprises the steps of: reporting, to the network, capability information including an information transmission time from a processor for the first RAT to a processor for the second RAT; receiving a first uplink grant for transmitting a first RAT uplink signal, and transmitting the first RAT uplink signal on the basis of the first uplink grant; and receiving a second uplink grant for transmitting a second RAT uplink signal, and transmitting the second RAT uplink signal on the basis of the second uplink grant.