公开(公告)号：US09923736B2

公开(公告)日：2018-03-20

申请号：US15511603

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jonghyun Park ,  Youngtae Kim

IPC: H04B7/06 ,  H04L25/02 ,  H04B7/024

CPC classification number: H04L25/0224 ,  H04B7/024 ,  H04B7/04 ,  H04B7/06 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0634

Abstract: A method for reporting a channel state for a downlink channel to be transmitted via at least one two-dimensional array antenna element composed of a row antenna array and a column antenna array is disclosed in accordance with one embodiment of the present invention. The method is performed by a terminal, and the method may comprise the steps of: receiving settings for channel state information (CSI) process 1 and CSI process 2, the CSI process 1 and the CSI process 2 each comprising a plurality of CSI-reference signal (RS) settings; selecting one of the CSI process 1 and the CSI process 2 if the CSI process 1 and the CSI process 2 have the same feedback cycle and offset; and estimating the downlink channel and reporting the channel estimation to a serving base station according to one selected from the CSI process 1 and the CSI process 2.

公开(公告)号：US20180070337A1

公开(公告)日：2018-03-08

申请号：US15708336

申请日：2017-09-19

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Dongyoun Seo ,  Yunjung Yi ,  Hanbyul Seo ,  Kijun Kim ,  Byounghoon Kim

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0091 ,  H04W72/0446

Abstract: Disclosed is a method for a terminal for receiving a downlink signal from a plurality of cells according to the semi-persistent scheduling (SPS) method in a wireless communication system. Specifically, the method comprises the steps of: receiving, in a first subframe, a first or second type scheduling information indicating an activation, according to the SPS method, from a serving cell from among the plurality of cells; and, in the first subframe and a second subframe configured via a higher layer after the first subframe, receiving the downlink signal from one cell from among the plurality of cells in accordance with resource allocation information comprised in the first or the second type scheduling information, wherein the first type scheduling information comprises quasi co-location (QCL) information for the serving cell and the one cell, and the QCL information applied in the first and second subframes is updated in accordance with the type of the scheduling information.

公开(公告)号：US09900896B2

公开(公告)日：2018-02-20

申请号：US14773730

申请日：2014-03-05

Applicant: LG ELECTRONICS INC.

Inventor： Kijun Kim ,  Hakseong Kim ,  Hanbyul Seo ,  Hyungtae Kim ,  Jonghyun Park ,  Byounghoon Kim

IPC: H04W4/00 ,  H04W72/08 ,  H04J11/00 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W72/082 ,  H04J11/004 ,  H04L1/0003 ,  H04L1/1812 ,  H04L5/0055 ,  H04W72/042 ,  H04W72/121 ,  H04W88/02 ,  H04W88/08

Abstract: A method for receiving interference information for interference cancellation of a user equipment (UE) includes receiving a multi-user downlink (DL) control channel including cyclic redundancy check (CRC) parity bits scrambled by a multi-user identifier (ID), from a base station (BS), wherein the multi-user DL control channel includes control information for each of a plurality of transport blocks (TBs) to be transmitted through a plurality of layers, and the TBs are configured to be transmitted to other UEs in a multi-user group, and decoding TBs to be transmitted to other UEs in the multi-user group using the control information.

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：US09893778B2

公开(公告)日：2018-02-13

申请号：US14893865

申请日：2014-07-25

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/26 ,  H04B7/06 ,  H04W72/04 ,  H04B7/024

CPC classification number: H04B7/0456 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/2656 ,  H04W72/042

Abstract: The present invention relates to a wireless communication system. A method for a terminal reporting channel state information in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving, from a second cell interfering with communication between a first cell and the terminal, a second precoding matrix indicator (PMI) determined based on the interference; and transmitting, to the first cell, the second PMI and a channel quality indicator (CQI).

公开(公告)号：US09838899B2

公开(公告)日：2017-12-05

申请号：US14766718

申请日：2014-02-07

Applicant: LG ELECTRONICS INC.

Inventor： Hanjun Park ,  Hyungtae Kim ,  Jonghyun Park ,  Kijun Kim ,  Hanbyul Seo

IPC: H04W24/10 ,  H04L1/00 ,  H04J11/00 ,  H04L5/00 ,  H04B7/06 ,  H04W24/08 ,  H04W74/00 ,  H04W72/12

CPC classification number: H04W24/10 ,  H04B7/0626 ,  H04B7/0639 ,  H04J11/005 ,  H04L1/00 ,  H04L5/0057 ,  H04W24/08 ,  H04W72/1226 ,  H04W74/006

Abstract: A method and apparatus for reporting a downlink channel state are disclosed. The method for reporting channel state information (CSI) to a base station (BS) by a user equipment (UE) in a wireless communication system having frequency-selective inter-cell interference, includes: performing channel measurement in a frequency band configured for downlink channel measurement; and reporting downlink channel state information (CSI) in accordance with the downlink channel measurement, wherein the frequency band is independently configured for each information contained in the CSI, and thus the downlink channel measurement is performed in each information-specifically configured frequency band contained in the CSI. As a result, the method and apparatus can efficiently report downlink channel state information, such that a higher-quality communication environment is expected in a heterogeneous cell environment.

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：US20170257853A1

公开(公告)日：2017-09-07

申请号：US15459998

申请日：2017-03-15

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Kijun Kim ,  Hanbyul Seo

IPC: H04J11/00 ,  H04W4/06 ,  H04L12/18 ,  H04B7/06 ,  H04W4/02 ,  H04L5/00 ,  H04W72/00

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0626 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0094 ,  H04L12/18 ,  H04L12/189 ,  H04W4/025 ,  H04W4/06 ,  H04W28/18 ,  H04W72/005 ,  H04W72/046 ,  H04W72/12

Abstract: The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transmitting or receiving a downlink signal by considering an antenna port relationship. A method for user equipment receiving a physical downlink shared channel (PDSCH) signal in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: determining a start symbol index of the PDSCH from the downlink subframe; and receiving the PDSCH signal based on the start symbol index. When the DCI is comprised according to DCI format 1A, and the downlink subframe is a multicast broadcast single frequency network (MBSFN) subframe, the start symbol index can be determined depending on a PDSCH start symbol value which is included in a PDSCH resource element mapping and Quasi co-location indicator (PQI) that is established by an upper layer.

公开(公告)号：US09730211B2

公开(公告)日：2017-08-08

申请号：US15347553

申请日：2016-11-09

Applicant: LG Electronics Inc.

Inventor： Jonghyun Park ,  Eunsun Kim ,  Hanbyul Seo ,  Kijun Kim ,  Byounghoon Kim

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/024 ,  H04L27/26

CPC classification number: H04W72/042 ,  H04B7/024 ,  H04L5/0035 ,  H04L5/0094 ,  H04L27/2656

Abstract: The present invention relates to a wireless communication system, and more specifically, to a method and an apparatus for transmitting or receiving a downlink signal considering an antenna port relationship. The method for enabling a terminal to receive a physical downlink sharing channel (PDSCH) signal in the wireless communication system according to one embodiment of the present invention can determine a PDSCH start symbol index according to the predetermined priority and receive the PDSCH signal therethrough. The PDSCH start symbol index can be determined when a PDSCH start symbol value included in a PDSCH resource element mapping and Quasi co-location Indicator (PQI) parameter set is determined by an upper layer. The PDSCH start symbol index can be determined according to the PDSCH start symbol value for a cell receiving the PDSCH when the PDSCH start symbol value included in the PQI parameter set is not determined by the upper layer.

公开(公告)号：US09729292B2

公开(公告)日：2017-08-08

申请号：US15141523

申请日：2016-04-28

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Eunsun Kim ,  Hanjun Park ,  Hanbyul Seo ,  Jonghyun Park ,  Kijun Kim

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/024 ,  H04B7/06

CPC classification number: H04L5/0048 ,  H04B7/024 ,  H04B7/0626 ,  H04L5/0005 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0094 ,  H04W72/042 ,  H04W72/0446

Abstract: The present invention relates to a wireless communication system. A method for receiving data by a user equipment (UE) in a cooperative multi-point (CoMP) wireless communication system includes receiving downlink control information (DCI) that does not contain information indicating a transmission base station (BS) that actually transmits data among a plurality of BSs that participate in CoMP, receiving information about zero-power channel state information-reference signal (CSI-RS) of each of the plural BSs, and assuming that data is not mapped to a resource element of zero-power CSI-RS with a lowest index and receiving the data through a physical downlink control channel (PDSCH).