公开(公告)号：US20170331541A1

公开(公告)日：2017-11-16

申请号：US15529958

申请日：2015-06-23

Applicant: LG ELECTRONICS INC.

Inventor： Jiwon KANG ,  Kitae KIM ,  Kilbom LEE ,  Kungmin PARK ,  Heejin KIM

IPC: H04B7/06 ,  H04B7/04 ,  H04B7/0404 ,  H04W72/12

Abstract: The present application discloses a method for a terminal reporting channel state information to a base station in a wireless communication system. Specifically, the method comprises the steps of: receiving, from a base station, a first reference signal corresponding to a row of a transmission antenna array, and a second reference signal corresponding to a column of the transmission antenna array; receiving, from the base station, a cross polarization characteristics measurement indicator; and reporting, to the base station, channel state information comprising a first precoder corresponding to the first reference signal and a second precoder corresponding to the second reference signal, wherein the channel state information comprises cross polarization characteristics information between antenna ports that have the same indexes, the antenna ports being among antenna ports having the first reference signal and the second reference signal transmitted.

公开(公告)号：US20170279501A1

公开(公告)日：2017-09-28

申请号：US15510741

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae KIM ,  Kijun KIM ,  Jiwon KANG ,  Jonghyun PARK ,  Kitae KIM

IPC: H04B7/0413 ,  H04L5/00 ,  H04B7/06 ,  H04W4/18

CPC classification number: H04B7/0413 ,  H04B7/0469 ,  H04B7/06 ,  H04L5/0005 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/005 ,  H04L5/0073 ,  H04W4/18

Abstract: The present invention relates to a base station in a wireless communication system which supports multi-antennas with multiple horizontal domains and multiple vertical domains. Particularly, the present invention comprises: a radio frequency unit and a processor, wherein the radio frequency unit comprises a first radio frequency (RF) chain and a second radio frequency (RF) chain which are connected to antenna elements corresponding to multiple vertical antennas with specific horizontal domains, wherein the processor, connected to the radio frequency unit, is configured to transmit reference signals, and wherein the first RF chain and the second RF chain are configured for different reference signals.

公开(公告)号：US20170245287A1

公开(公告)日：2017-08-24

申请号：US15501819

申请日：2014-08-14

Applicant: LG ELECTRONICS INC. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kilbom LEE ,  Changho SUH ,  Seiyun SHIN ,  Jaewoong CHO ,  Jiwon KANG ,  Kitae KIM

IPC: H04W72/08 ,  H04W72/04 ,  H04B7/26 ,  H04B7/04

CPC classification number: H04W72/082 ,  H04B7/04 ,  H04B7/26 ,  H04J11/005 ,  H04W72/0446 ,  H04W88/02 ,  H04W88/08

Abstract: Disclosed is a communication method of a terminal utilizing outdated channel information in a two-cell, three-user network environment, the method comprising: transmitting nine different first linear combinations to a first base station in each time slot during a first time interval; receiving a first feedback signal from a second base station which has received the first linear combination as an interference signal; transmitting four different second linear combinations to the first base station during a first sub-time interval of a third time interval; receiving a second feedback signal from the second base station which has received the second linear combinations as an interference signal; and transmitting reconfiguration signals consisting of eight data symbols to the first base station during a third sub-time interval of the third time interval. Further, a communication method of a base station corresponding to such a terminal is also disclosed.

公开(公告)号：US20170237476A1

公开(公告)日：2017-08-17

申请号：US15502974

申请日：2015-08-11

Applicant: LG ELECTRONICS INC.

Inventor： Kitae KIM ,  Jiwon KANG ,  Kilbom LEE ,  Heejin KIM

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

CPC classification number: H04B7/0617 ,  H04B7/0619 ,  H04L5/0048 ,  H04L5/0053 ,  H04W72/046

Abstract: The present invention provides a hybrid beamforming-based broadcast channel transmitting method and devices. In an embodiment of the present invention, a method for transmitting broadcast channels in a wireless connection system supporting hybrid beamforming includes: a step of transmitting N broadcast channels including the same broadcast information in N mutually different subframes; and a step of receiving feedback information on one or more of the N broadcast channels, wherein N mutually different analog beams may be applied to the N broadcast channels, and N may be a positive integer.

公开(公告)号：US20170195934A1

公开(公告)日：2017-07-06

申请号：US15308647

申请日：2015-02-13

Applicant: LG ELECTRONICS INC.

Inventor： Jiwon KANG ,  Sunam KIM ,  Kitae KIM ,  Kilbom LEE ,  Heejin KIM

IPC: H04W36/30 ,  H04B7/06 ,  H04B7/0456 ,  H04W72/04 ,  H04W88/10 ,  H04W36/34 ,  H04B7/0417

Abstract: Disclosed herein is a method for generating channel state information at a user equipment (UE) for multiple input multiple output (MIMO) based beamforming in a wireless communication system. The method includes receiving a first pilot pattern and a second pilot pattern from a base station, selecting a precoding matrix index (PMI) and a rank indicator (RI) for each of the first pilot pattern and the second pilot pattern, configuring the RI for the first pilot pattern as an RI for a three-dimensional (3D) channel, wherein the RI for the first pilot pattern is larger than the RI for the second pilot pattern; and reselecting a PMI of the second pilot pattern on the assumption that the RI of the second pilot pattern is equal to the RI for the 3D channel and the PMI of the first pilot pattern is equal to a preselected PMI.

公开(公告)号：US20170180031A1

公开(公告)日：2017-06-22

申请号：US15300322

申请日：2015-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Kitae KIM ,  Heejin KIM

IPC: H04B7/08 ,  H04B7/0456

CPC classification number: H04B7/0845 ,  H04B7/0417 ,  H04B7/0456 ,  H04J11/0033 ,  H04J11/005 ,  H04L5/0023 ,  H04L5/003 ,  H04L5/0073

Abstract: A method of processing a reception signal and a MIMO receiver are disclosed. The method includes the steps of selecting a reference RE from an RE group including a plurality of REs, generating a preprocessing filter to be shared by the plurality of the REs belonging to the RE group based on channel information of the reference RE and generating detection signals for the plurality of the REs in a manner of compensating reception signals for each of the plurality of the REs using the preprocessing filter and channel information of each of the plurality of the REs.

公开(公告)号：US20170155441A1

公开(公告)日：2017-06-01

申请号：US15323611

申请日：2015-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Kitae KIM ,  Heejin KIM

IPC: H04B7/08 ,  H04B7/0413

CPC classification number: H04B7/0842 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/08

Abstract: Disclosed is a reception signal processing method of an MIMO receiver, which determines a detection order, which is the order of processing reception signals received by a plurality of layers through a plurality of antennas, by using channel information of a reference RE; generates a common multi-filter for processing the reception signals according to the detection order, generates an RE group, which includes a plurality of REs and in which the common multi-filter generated on the basis of the reference RE is to be shared, and applies the common multi-filter to each reception signal of the REs excluding the reference RE in the RE group such that detection signals are generated for the plurality of layers from each reception signal of the REs.

公开(公告)号：US20170041061A1

公开(公告)日：2017-02-09

申请号：US15304458

申请日：2015-04-30

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Kitae KIM ,  Heejin KIM

IPC: H04B7/08 ,  H04B7/04

CPC classification number: H04B7/08 ,  H04B7/04 ,  H04B7/0413 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0228 ,  H04L25/03891

Abstract: Disclosed is a method for processing a reception signal, and a MIMO receiver, the method comprising a step in which: a reference resource element (RE) is selected within an RE group that comprises a plurality of REs; generated is a preprocessing filter which will be shared by the plurality of REs in the RE group on the basis of channel information of the reference RE; on the basis of channel information of the plurality of REs other than the reference RE, generated is a covariance matrix with respect to each of the REs other than the reference RE; and reception signals with respect to each of the plurality of REs are offset by selectively using the preprocessing filter and the covariance matrix, and thereby detection signals with respect to the RE group are generated.

Abstract translation: 公开了一种处理接收信号的方法和MIMO接收机，该方法包括以下步骤：在包括多个RE的RE组内选择参考资源元素（RE）; 生成的是根据参考RE的信道信息由RE组中的多个RE共享的预处理过滤器; 基于除了参考RE之外的多个RE的信道信息，生成的是相对于参考RE以外的每个RE的协方差矩阵; 并且通过选择性地使用预处理滤波器和协方差矩阵来偏移关于多个RE中的每一个的接收信号，从而生成关于RE组的检测信号。

公开(公告)号：US20160249245A1

公开(公告)日：2016-08-25

申请号：US15028255

申请日：2014-10-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin KIM ,  Jaehoon CHUNG ,  Kitae KIM ,  Kukheon CHOI ,  Kwangseok NOH

IPC: H04W28/02 ,  H04W72/04 ,  H04L5/16

CPC classification number: H04W28/0236 ,  H04B17/345 ,  H04L5/16 ,  H04W72/0413 ,  H04W72/042

Abstract: The present invention relates to methods for interference cancellation between terminals in a full-duplex radio (FDR) system and apparatuses supporting the same. A method for cancelling interference between terminals in a wireless access system supporting a full-duplex radio (FDR) system, as an aspect of the present invention, may comprise the steps of: receiving, by a first terminal, reference signal information including information for configuring an interference reference signal from a base station; receiving the interference reference signal from a second terminal; obtaining, by the first terminal, interference channel information with regard to an interference channel between the first terminal and the second terminal on the basis of the interference reference signal; and transmitting by beamforming uplink data to the base station on the basis of the interference channel information by the first terminal. In this case, the first terminal is supported by the FDR system and the second terminal supports the half-duplex radio (HDR) system, and a resource area transmitting uplink data by the first terminal can be configured to match a resource area receiving downlink data by the second terminal.

Abstract translation: 本发明涉及全双工无线电（FDR）系统中的终端之间的干扰消除方法以及支持它的装置。 作为本发明的一个方面，一种用于消除支持全双工无线电（FDR）系统的无线接入系统中的终端之间的干扰的方法可以包括以下步骤：由第一终端接收参考信号信息， 配置来自基站的干扰参考信号; 从第二终端接收干扰参考信号; 基于所述干扰参考信号，由所述第一终端获取关于所述第一终端和所述第二终端之间的干扰信道的干扰信道信息; 并且基于第一终端的干扰信道信息，通过波束成形上行链路数据发送到基站。 在这种情况下，第一终端由FDR系统支持，第二终端支持半双工无线电（HDR）系统，并且由第一终端发送上行链路数据的资源区域可以被配置为匹配接收下行链路数据的资源区域 由第二终端。

公开(公告)号：US20160143013A1

公开(公告)日：2016-05-19

申请号：US14899498

申请日：2014-06-23

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin KIM ,  Kwangseok NOH ,  Kukheon CHOI ,  Jaehoon CHUNG ,  Kitae KIM

IPC: H04W72/04 ,  H04L27/26 ,  H04B17/345

CPC classification number: H04W72/044 ,  H04B17/345 ,  H04J13/0062 ,  H04L27/2607

Abstract: The present invention provides methods for estimating self-interference in a full-duplex radio (FDR) system using a reference signal to which a cyclic shift is applied, and apparatuses supporting the same. According to one embodiment of the present invention, a method for estimating a self-interference (SI) channel, by a base station, in a wireless access system supporting wireless FDR communication comprises the steps of: transmitting a channel signal including a first cyclic shift variable allocated to a terminal; transmitting a downlink (DL) self-interference reference signal (SI-RS) for estimating the SI channel generated on the basis of a second cyclic shift variable; receiving the DL SI-RS; receiving an uplink (UL) SI-RS generated on the basis of the first cyclic shift variable; and estimating the SI channel using the DL SI-RS and the UL SI-RS.

Abstract translation: 本发明提供了使用应用循环移位的参考信号来估计全双工无线电（FDR）系统中的自干扰的方法，以及支持该参考信号的装置。 根据本发明的一个实施例，一种用于在支持无线FDR通信的无线接入系统中由基站估计自干扰信道的方法包括以下步骤：发送包括第一循环移位的信道信号 变量分配给终端; 发送用于估计基于第二循环移位变量生成的SI信道的下行链路（DL）自干扰参考信号（SI-RS）; 接收DL SI-RS; 接收基于所述第一循环移位变量生成的上行链路（UL）SI-RS; 以及使用DL SI-RS和UL SI-RS估计SI信道。