公开(公告)号：US20180034523A1

公开(公告)日：2018-02-01

申请号：US15553967

申请日：2015-07-23

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0617 ,  H04B7/024 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/0639 ,  H04L5/0048

Abstract: The present application provides a method for feeding back, by a terminal, CSI information in a wireless communication system to which 3D beamforming is applied. Here, the method comprises the steps of: receiving a pilot signal from a base station; and feeding back first CSI information for a horizontal direction domain and second CSI information for a vertical direction domain on the basis of the 3D beamforming. Here, when a precoding indicator is a first value, first wideband (WB) CSI information and second wideband (WB) CSI information may be fed back, and when the precoding indicator is a second value, first subband (SB) CSI information and second subband (SB) CSI information may be fed back.

公开(公告)号：US20170245271A1

公开(公告)日：2017-08-24

申请号：US15515096

申请日：2015-10-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W72/0446 ,  H04B7/06 ,  H04L5/001 ,  H04L5/0016 ,  H04L5/0017 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0051 ,  H04L27/2601 ,  H04W72/042

Abstract: Disclosed is a reference signal generation method in which generated are reference signal sequences applied, if the number of antenna ports used in data transmission is 9 or more, the reference signal sequences are mapped to resource regions allocated to the plurality of antenna ports, respectively, and a subframe to which the reference signal sequences are mapped is transmitted to a terminal. In the reference signal generation method, a resource region to which mapped is a reference signal sequence with respect to the ninth antenna port among the plurality of antenna ports is identical to a resource region to which mapped is a reference signal sequence with respect to the tenth antenna port, and the reference signal sequence with respect to the ninth antenna port and the reference signal sequence with respect to the tenth antenna port are multiplexed by means of CDM.

公开(公告)号：US20170149479A1

公开(公告)日：2017-05-25

申请号：US15320285

申请日：2014-06-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0434 ,  H04B7/0456 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0628 ,  H04L1/06 ,  H04L25/03343 ,  H04L25/03898

Abstract: Disclosed in the present application is a method for a transmitting end transmitting a signal to a receiving end in a wireless communication system. Specifically, the method comprises the steps of: receiving, from the receiving end, information on a first precoder and a second precoder which are for a channel between the transmitting end and the receiving end; and transmitting a signal to the receiving end on the basis of the first precoder, wherein, if the receiving performance of the receiving end based on the first precoder is greater than or equal to a critical value, the signal is transmitted to the receiving end on the basis of the second precoder.

公开(公告)号：US20170078001A1

公开(公告)日：2017-03-16

申请号：US15125946

申请日：2015-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Kitae KIM ,  Jiwon KANG ,  Kilbom LEE

IPC: H04B7/04 ,  H04B7/08 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/046 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0689 ,  H04B7/0871

Abstract: A method of transmitting channel state information (CSI) for a hybrid beamforming from a user equipment in a wireless communication system according to one embodiment of the present invention may include measuring a gain of a directional beam formed with reference to a first direction and a gain of an omni-directional beam formed equivalently in all directions respectively and transmitting the CSI including a gain difference between the directional beam and the omni-directional beam to a base station, wherein a direction of a digital beamforming in the hybrid beamforming is determined in accordance with the gain difference between the directional beam and the omni-directional beam and wherein a direction of an analog beamforming in the hybrid beamforming is determined in accordance with the first direction.

Abstract translation: 根据本发明的一个实施例的从无线通信系统中的用户设备发送用于混合波束形成的信道状态信息（CSI）的方法可以包括测量参考第一方向和增益形成的定向波束的增益 分别在所有方向上等效地形成的全向波束，并将包括定向波束和全向波束之间的增益差的CSI发射到基站，其中根据混合波束形成确定数字波束成形的方向 其中定向波束和全向波束之间的增益差异，并且其中根据第一方向确定混合波束形成中的模拟波束形成的方向。

公开(公告)号：US20170070271A1

公开(公告)日：2017-03-09

申请号：US15122626

申请日：2014-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Kitae KIM

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

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04L25/03343 ,  H04L25/03968 ,  H04W72/042

Abstract: Disclosed herein is a method for generating transmitted signals. The method includes selecting a reference resource element (RE) from an RE group including a plurality of REs, generating a common precoder to be shared among the plurality of REs of the RE group based on channel information of the reference RE, generating primary signals, which are precoding signals of the plurality of REs, by applying the common precoder to transmitted data for the plurality of REs, and generating secondary signals by compensating for the primary signals of the REs except for the reference RE among the plurality of REs using channel information of the REs.

Abstract translation: 这里公开了一种用于产生发射信号的方法。 该方法包括从包括多个RE的RE组中选择参考资源元素（RE），基于参考RE的信道信息产生要在RE组的多个RE中共享的公共预编码器，产生主信号， 它们是多个RE的预编码信号，通过将公共预编码器应用于多个RE的发送数据，并且通过使用信道信息来补偿多个RE中的参考RE之外的RE的主信号来产生辅助信号 的RE。

公开(公告)号：US20170064676A1

公开(公告)日：2017-03-02

申请号：US15308509

申请日：2015-04-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04B7/04

CPC classification number: H04W72/042 ,  H04B7/04 ,  H04B7/0452 ,  H04B7/06 ,  H04L5/00 ,  H04L5/001 ,  H04L25/021 ,  H04L25/0222 ,  H04L27/2601 ,  H04W72/1231

Abstract: Disclosed are: a MIMO transmitter communication method estimating a channel correlation for REs on the basis of information regarding channels of REs contained in a resource region allocable to a MIMO receiver, allocating a part of the resource region as a resource for the MIMO receiver in consideration of the estimated channel correlation, and transmitting a downlink signal to the MIMO receiver through the allocated resource; and a MIMO transmitter.

Abstract translation: 公开了一种MIMO发射机通信方法，其基于关于可分配给MIMO接收机的资源区域中包含的RE的信道的信息来估计RE的信道相关性，将所述资源区域的一部分作为考虑的MIMO接收机的资源 估计的信道相关性，并通过所分配的资源向MIMO接收机发送下行链路信号; 和MIMO发射机。

公开(公告)号：US20170041049A1

公开(公告)日：2017-02-09

申请号：US15304014

申请日：2015-02-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/04

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

Abstract: A method of generating a transmission signal and a MIMO transmitter are disclosed. The method includes the steps of selecting a reference RE from an RE group including a plurality of resource elements (REs), generating a common precoder and 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, generating first signals corresponding to a precoding signal for each of the plurality of the REs in a manner of applying the common precoder to transmission data of each of the plurality of the REs and generating second signals in a manner of compensating first signals of REs except the reference RE among the plurality of the REs using channel information of each of plurality of the REs and the preprocessing filter.

Abstract translation: 公开了一种产生发送信号和MIMO发射机的方法。 该方法包括以下步骤：从包括多个资源元素（RE）的RE组中选择参考RE，产生公共预编码器和基于频道信息的属于RE组的多个RE共享的预处理过滤器 的参考RE，以对多个RE中的每一个的预编码信号对应的第一信号以对多个RE中的每一个的发送数据应用公共预编码器的方式产生，并以第一 使用多个RE和预处理过滤器中的每一个的信道信息，在多个RE中除RE之外的RE的信号。

公开(公告)号：US20170033853A1

公开(公告)日：2017-02-02

申请号：US15302875

申请日：2015-02-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06 ,  H04B7/04

CPC classification number: H04B7/0617 ,  H04B7/0417 ,  H04B7/0452

Abstract: A method of transmitting a reference signal for a hybrid beamforming in a base station of a wireless communication system according to one embodiment of the present invention may include selecting first subset elements arrayed in a first direction from a plurality of antenna elements included in a 2D array antenna of the base station and transmitting a first reference signal through a reference beam formed by the first subset elements, wherein a first cross-section for the first direction of the reference beam corresponds to a directional beam and wherein a second cross-section for a second direction crossing the first direction of the reference beam corresponds to an omni-directional beam.

Abstract translation: 根据本发明的一个实施例，在无线通信系统的基站中发送用于混合波束成形的参考信号的方法可以包括从包括在2D阵列中的多个天线元素中选择排列在第一方向上的第一子集元素 天线，并且通过由第一子集元件形成的参考光束发送第一参考信号，其中用于参考光束的第一方向的第一横截面对应于定向光束，并且其中第二横截面用于 与参考光束的第一方向交叉的第二方向对应于全向光束。

公开(公告)号：US20170026101A1

公开(公告)日：2017-01-26

申请号：US15302473

申请日：2014-09-03

Applicant: LG Electronics Inc.

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

IPC: H04B7/06 ,  H04B7/04

CPC classification number: H04B7/0639 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0619 ,  H04B17/24

Abstract: A method for transmitting feedback information to a base station at a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving a pilot signal from the base station at a first time and a second time, measuring first channel quality at the first time and second channel quality at the second time based on the pilot signal and transmitting the feedback information including information about a variation value between the first channel quality and the second channel quality to the base station.

Abstract translation: 公开了一种在无线通信系统中的用户设备（UE）向基站发送反馈信息的方法。 该方法包括在第一时间和第二时间从基站接收导频信号，基于导频信号测量第一时间的第一信道质量和第二时间的第二信道质量，并发送包括关于一个 基站之间的第一信道质量和第二信道质量之间的变化值。

公开(公告)号：US20160344513A1

公开(公告)日：2016-11-24

申请号：US15159260

申请日：2016-05-19

Applicant: LG ELECTRONICS INC.

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

IPC: H04L1/00 ,  H04W88/02 ,  H04B7/04

CPC classification number: H04B7/0413 ,  H04L1/0045

Abstract: The present document is for a wireless communication with reduced internal signaling burden in the distributed antenna system (DAS). In the proposed method, a user equipment (UE) receives a decoding unit, from the network, by multiple distributed unit (DUs) distributed within the UE, and decodes the decoding unit, at each of the multiple DUs. Each of the multiple DUs reports first information on the decoding result to a central unit (CU) controlling the multiple DUs, and the CU determines decoded bit values of the decoding unit based on the first information acquired from each of the multiple DUs.

Abstract translation: 本文件用于在分布式天线系统（DAS）中减少内部信令负担的无线通信。 在所提出的方法中，用户设备（UE）通过分布在UE内的多个分布式单元（DU）从网络接收解码单元，并且在多个PDU中的每一个处对解码单元进行解码。 多个PDU中的每一个将解码结果的第一信息报告给控制多个PDU的中央单元（CU），并且CU基于从多个PDU中的每一个获取的第一信息来确定解码单元的解码比特值。