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：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：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：US09735818B2

公开(公告)日：2017-08-15

申请号：US14913947

申请日：2014-10-27

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim ,  Yunjung Yi ,  Byounghoon Kim ,  Hanjun Park ,  Hyunho Lee

IPC: H04B7/01 ,  H04B1/12

CPC classification number: H04B1/123 ,  H04B1/126

Abstract: The present invention relates to a wireless communication system. A method for cancelling interference and receiving a signal by a user equipment in a wireless communication system, the method performed by the user equipment comprising: receiving assistance information for cancelling an interference signal transmitted from an interfering base station; cancelling the interference signal based on the assistance information; and receiving a desired signal from a serving base station, wherein the user equipment assumes a part of the assistance information for cancelling the interference signal as a limited value and then receives the interference signal.

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).

公开(公告)号：US20170195093A1

公开(公告)日：2017-07-06

申请号：US15468398

申请日：2017-03-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04W72/04

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 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 corresponding to the transmission BS and receiving the data through a physical downlink control channel (PDSCH).

公开(公告)号：US09680591B2

公开(公告)日：2017-06-13

申请号：US14640188

申请日：2015-03-06

Applicant: LG Electronics Inc.

Inventor： Hanjun Park ,  Kijun Kim ,  Hyungtae Kim ,  Hyunho Lee

IPC: H04J11/00 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/024

CPC classification number: H04J11/005 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/0626 ,  H04B7/0632

Abstract: A method for reporting channel state information (CSI) having reflected interference cancellation capability therein in a wireless communication system is performed by a terminal and includes receiving interference configuration information indicating a first group of cells corresponding to targets for which interference cancellation capability is reflected, and scheduling information of a serving cell, from the serving cell, receiving a specific sequence transmitted from a second group of cells, determining whether to reflect the interference cancellation capability for the first group of cells and the second group of cells, using the interference configuration information, the scheduling information or the specific sequence, and transmitting CSI having reflected the interference cancellation capability therein, wherein the second group of cells correspond to candidate cells capable of reflecting the interference cancellation capability other than the indicated cells.

公开(公告)号：US09647812B2

公开(公告)日：2017-05-09

申请号：US15141305

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 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 corresponding to the transmission BS and receiving the data through a physical downlink control channel (PDSCH).

公开(公告)号：US09647738B2

公开(公告)日：2017-05-09

申请号：US14765799

申请日：2014-03-21

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim

IPC: H04B7/04 ,  H04B7/0417 ,  H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0663 ,  H04W72/0413

Abstract: The present invention relates to a wireless communication system. A method for transmitting channel state information (CSI) in a wireless communication system, according to one embodiment of the present invention, comprises steps of: subsampling a codebook for a four-antenna port including 16 precoding matrices; and performing feedback for the CSI on the basis of a subsampled codebook, wherein when a rank indicator (RI) is four, a subsampled codebook includes, from 16 precoding matrices, a first precoding matrix having index 0, a third precoding matrix having index 2, a ninth precoding matrix having index 8, and an eleventh precoding matrix having index 10.