公开(公告)号：US10291306B2

公开(公告)日：2019-05-14

申请号：US15561001

申请日：2015-07-24

Applicant: LG ELECTRONICS INC.

Inventor： Heejin Kim ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Kungmin Park

IPC: G01S7/52 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/08 ,  H04B7/024

Abstract: The present specification pertains to a method by which a terminal feeds back CSI information in a wireless communication system to which 3D beamforming is applied, the method comprising the steps of: receiving a pilot signal from a base station; setting either a first CSI transmission mode or a second CSI transmission mode; and feeding back CSI information on the basis of the set CSI transmission mode. Here, a period and offset of the CSI information to be fed back can be preset regardless of the CSI transmission mode.

公开(公告)号：US10251191B2

公开(公告)日：2019-04-02

申请号：US15506709

申请日：2015-02-12

Applicant: LG ELECTRONICS INC.

Inventor： Eunjong Lee ,  Kitae Kim ,  Giwon Park ,  Jaehoon Chung ,  Jiwon Kang ,  Hyeyoung Choi

IPC: H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04W76/10 ,  H04W72/04

Abstract: Provided are a method and apparatus for requesting scheduling for an uplink data transmission in a wireless communication system. The method may include receiving, by a user equipment, an additional scheduling request (SR) resource configuration information including additional SR resource information and buffer size information configured to the additional SR resource in addition to a default SR resource from a base station, transmitting, by the user equipment, an SR through the default SR resource or the additional SR resource to the base station, receiving, by the user equipment, an uplink resource allocation information which is determined according to the resource in which the SR is transmitted from the base station, and transmitting, by the user equipment, the uplink data to the base station through a physical uplink shared channel (PUSCH) resource which is allocated by the uplink resource allocation information.

公开(公告)号：US10244535B2

公开(公告)日：2019-03-26

申请号：US14767518

申请日：2014-02-13

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Kitae Kim ,  Hyunsoo Ko ,  Jaehoon Chung

IPC: H04W72/04 ,  H04W4/70

Abstract: The present invention is used for a wireless access system supporting a machine type communication (MTC), and provides a method for allotting a new system bandwidth for MTC and an apparatus for supporting the same. According to an embodiment of the present invention, a method for allotting a system bandwidth for an MTC terminal in a wireless access system supporting a machine type communication (MTC) includes the steps of: causing an MTC terminal to receive an upper layer signal containing the system bandwidth indication information representing an MTC system bandwidth allotted to the MTC terminal; and causing the MTC terminal to transmit uplink control information through the MTC system bandwidth represented by the system bandwidth indication information. In this case, the MTC system bandwidth can be constructed by connecting to a legacy system bandwidth in the direction of the frequency axis.

公开(公告)号：US10231241B2

公开(公告)日：2019-03-12

申请号：US15504896

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jiwon Kang ,  Kilbom Lee ,  Heejin Kim

IPC: H04W72/04 ,  H04L1/18 ,  H04B7/06 ,  H04W72/00 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: The present invention relates to a method and a device for transmitting a training symbol for hybrid beamforming. A method for transmitting a training symbol for estimating an analog beam in a wireless access system which supports hybrid beamforming according to one embodiment of the present invention comprises: a step of repeatedly transmitting a training symbol a number of times equivalent to the number of analog candidate beams; and a step of repeatedly transmitting a broadcasting channel a number of times equivalent to the number of analog candidate beams. A training symbol section, where the training symbol is transmitted, can be allocated to the same subframe as a subframe to which the repeatedly transmitted broadcasting channel is allocated.

公开(公告)号：US10218478B2

公开(公告)日：2019-02-26

申请号：US15505496

申请日：2015-06-25

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jiwon Kang ,  Kilbom Lee ,  Heejin Kim

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/08 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: A method is provided for determining a weight for hybrid beamforming. A base station signals, to a user equipment, a configuration for repeated transmission of a first omnidirectional beam equally formed in all directions, receives the first omnidirectional beam from the user equipment by forming a second omnidirectional beam, and repeatedly receives the first omnidirectional beam from the user equipment by sequentially forming a plurality of directional beams corresponding to a plurality of directions. The base station determines a weight for hybrid beamforming by obtaining a gain difference between the first omnidirectional beam received through the second omnidirectional beam and the first omnidirectional beam received through a first directional beam among the plurality of directional beams, selecting a precoding matrix indicator (PMI) and acquiring, based on the PMI, a coefficient of a phase shifter and a coefficient of a power amplifier for analog beamforming of the hybrid beamforming.

公开(公告)号：US10212714B2

公开(公告)日：2019-02-19

申请号：US15120218

申请日：2014-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Jiwon Kang ,  Kitae Kim

IPC: H04W72/08 ,  H04B7/0413 ,  H04L25/03 ,  H04L5/00 ,  H04B7/0452

Abstract: Disclosed herein are a received signal processing method including selecting a reference resource element (RE) from an RE group including a plurality of REs, generating a common filter to be shared among the plurality of REs of the RE group based on channel information of the reference RE, detecting primary signals, from which channel influence is removed, of the plurality of REs by applying the common filter to received signals of the plurality of REs, and generating secondary signals by compensating for primary signals of REs except for the reference RE among the plurality of REs using channel information of the REs, and a multiple input multiple output (MIMO) receiver.

公开(公告)号：US10182447B2

公开(公告)日：2019-01-15

申请号：US15309151

申请日：2015-04-30

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Jiwon Kang ,  Kitae Kim ,  Heejin Kim

IPC: H04W4/00 ,  H04W72/08 ,  H04B7/08 ,  H04B7/0404 ,  H04B7/0413 ,  H04L5/00 ,  H04W72/04

Abstract: Disclosed are a method and a receiver for processing a received signal, the method dividing a plurality of resource elements (RE) to create RE groups by considering the inter-relationships between the channels of the plurality of REs, selecting a reference RE for each RE group, and generating, for each RE group, a detection signal from a received signal on the basis of channel information of the reference RE.

公开(公告)号：US10090899B2

公开(公告)日：2018-10-02

申请号：US15748344

申请日：2016-03-17

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jiwon Kang ,  Kilbom Lee ,  Heejin Kim ,  Kungmin Park

IPC: H04B7/02 ,  H04B7/0456 ,  H04B7/06

Abstract: Disclosed in the present application is a method by which a terminal receives a signal, to which hybrid beamforming is applied, from a base station in a wireless communication system. More specifically, the method comprises the steps of: acquiring information on a first precoder for first beamforming of the hybrid beamforming; generating information on a precompensation precoder for the first beamforming by using the information on the first precoder; reporting the information on the precompensation precoder to the base station; and receiving, from the base station, a signal to which the precompensation precoder, the first beamforming, and second beamforming are applied, wherein the precompensation precoder adjusts, to zero degrees, a boresight direction of a signal to which the first precoder for the first beamforming is applied, and a second precoder for the second beamforming is configured to enable the signal to be transmitted in a final boresight direction on the basis of a boresight direction of zero degrees.

公开(公告)号：US20180234212A1

公开(公告)日：2018-08-16

申请号：US15749916

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Kungmin Park ,  Jiwon Kang ,  Kitae Kim ,  Kilbom Lee ,  Heejin Kim

IPC: H04L1/18 ,  H04W72/12

CPC classification number: H04L1/1812 ,  H04B7/022 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/26 ,  H04L1/0026 ,  H04L1/1845 ,  H04L1/1854 ,  H04L1/1896 ,  H04W72/121

Abstract: Disclosed is a retransmitted data reception method comprising the steps of: receiving a first data packet from a base station through a first DU group including one or more DUs; receiving a second data packet, which is retransmitted for the first data packet, through a second DU group including another one or more of the DUs; and combining the first data packet and the second data packet so as to decode the combined data packet, wherein control information corresponding to the second data packet includes an HARQ process ID for notifying that the second data packet is retransmitted for the first data packet.

公开(公告)号：US10034282B2

公开(公告)日：2018-07-24

申请号：US15364168

申请日：2016-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Kitae Kim ,  Jinyoung Chun ,  Sunam Kim ,  Jiwon Kang ,  Binchul Ihm ,  Sungho Park

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12

Abstract: In a wireless communication system, when a terminal receives control information from a downlink subframe, which is divided into a Physical Downlink Control Channel (PDCCH) region and a Physical Downlink Shared Channel (PDSCH) region, in a wireless communication system, the receiving of the control information includes: receiving, from a base station, first CFI information indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols available for Physical Downlink Control Channel (PDCCH) transmission; receiving, from the base station, second CFI information indicating start OFDM symbol information available for Physical Downlink Shared Channel (PDSCH) transmission corresponding to an enhanced Physical Downlink Control Channel (E-PDCCH); and receiving the PDSCH from the base station on the basis of the first CFI information or the second CFI information. The PDCCH is placed in the PDCCH region of the downlink subframe, and the E-PDCCH is placed in the PDSCH region of the downlink subframe.