公开(公告)号：US10897290B2

公开(公告)日：2021-01-19

申请号：US16671458

申请日：2019-11-01

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Kijun Kim ,  Jonghyun Park

IPC: H04B7/0456 ,  H04B7/04 ,  H04B7/06

Abstract: Disclosed are a codebook-based signal transmission and reception method in a multi-antenna wireless communication system and an apparatus therefor. Specifically, a method for transmitting or receiving a signal on the basis of a codebook by a terminal in a 2-dimensional multi-antenna wireless communication system comprises the steps of: receiving a channel state information reference signal (CSI-RS) through a multi-antenna port from a base station; and reporting channel state information to the base station, wherein the channel state information may include a precoding matrix indicator (PMI) for indicating a precoding matrix, the PMI may include a first PMI for selecting a set of precoding matrixes from the codebook and a second PMI for selecting one precoding matrix from the set of precoding matrixes.

公开(公告)号：US10812164B2

公开(公告)日：2020-10-20

申请号：US16126390

申请日：2018-09-10

Applicant: LG Electronics Inc.

Inventor： Haewook Park ,  Kijun Kim ,  Jiwon Kang ,  Sukhyon Yoon

IPC: H04B7/06 ,  H04B7/0456 ,  H04W72/04 ,  H04W72/10 ,  H04L5/00

Abstract: Provided are a method and an apparatus for reporting channel state information (CSI) by a user equipment in a wireless communication system. According to the present invention, the user equipment may receive configuration information related with the CSI from a base station and measure the CSI based on the configuration information. Thereafter, the user equipment includes reporting the CSI to the base station and the CSI includes a rank indicator (RI), a channel quality indicator (CQI), and an indicator indicating the number of amplitude coefficients other than 0 and the second part includes a precoding matrix indicator (PMI).

公开(公告)号：US10790888B2

公开(公告)日：2020-09-29

申请号：US16694568

申请日：2019-11-25

Applicant: LG Electronics Inc.

Inventor： Haewook Park ,  Hyungtae Kim ,  Kijun Kim ,  Jonghyun Park

IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0452

Abstract: Disclosed are a method for transmitting and receiving channel state information in a multi-antenna wireless communication system, and an apparatus therefor. Particularly, a method by which user equipment (UE) reports channel state information in a two-dimensional multi-antenna wireless communication system comprises the steps of: receiving, from a base station, a channel state information reference signal (CSI-RS) through a multi-antenna port; and reporting the channel state information to the base station, wherein a plurality of codewords, which are used for generating a pre-coding matrix selected by the UE in a codebook for reporting the channel state information, are specified by the channel state information and, after power coefficients are applied to each of the plurality of codewords, the pre-coding matrix can be generated based on a linear combination of the plurality of codewords to which the power coefficients are applied.

公开(公告)号：US10700745B2

公开(公告)日：2020-06-30

申请号：US16726134

申请日：2019-12-23

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jonghyun Park ,  Haewook Park ,  Daesung Hwang

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/0456

Abstract: Disclosed in the present invention is a method by which a terminal reports channel status information (CSI) to a base station in a wireless communication system. The method comprises the steps of: receiving, through an upper layer, information on one CSI process having a first enhanced multiple input multiple output (eMIMO) type and a second eMIMO type; receiving a first channel status information-reference signal (CSI-RS) corresponding to the first eMIMO type; periodically reporting, to the base station, first CSI measured on the basis of the first CSI-RS; receiving a second CSI-RS, which corresponds to the second eMIMO type, beamformed on the basis of the first CSI; and periodically reporting, to the base station, second CSI measured on the basis of the second CSI-RS, wherein a priority of the first CSI is set to be equal to a priority of a CSI-RS resource indicator (CRI).

公开(公告)号：US10693606B2

公开(公告)日：2020-06-23

申请号：US16176159

申请日：2018-10-31

Applicant: LG ELECTRONICS INC.

Inventor： Hyunsu Cha ,  Kijun Kim ,  Jonghyun Park ,  Haewook Park

IPC: H04L5/00 ,  H04W72/08 ,  H04J13/16 ,  H04L27/26 ,  H04J13/00

Abstract: Provided is a method of determining an initialization value of a sequence in a wireless communication system. Specifically, a method performed by evolveda base station includes generating a first sequence of a channel state information-reference signal (CSI-RS) based on a pseudo-random sequence; and transmitting the first sequence on resource element (RE)s.

公开(公告)号：US10651901B2

公开(公告)日：2020-05-12

申请号：US16069413

申请日：2017-01-12

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Jonghyun Park ,  Kijun Kim

IPC: H04B7/0417 ,  H04B7/04 ,  H04B7/06 ,  H04W76/27 ,  H04B7/0456 ,  H04L5/00

Abstract: Disclosed are a method for transmitting and receiving channel state information in a multi-antenna wireless communication system, and an apparatus therefore. More specifically, a method for reporting, by a UE, channel state information (CSI) in a multi-antenna wireless communication system may include: receiving a channel state information reference signal (CSI-RS) on x multiple antenna ports from a base station; selecting y multiple antenna ports from among the x multiple antenna ports; and reporting, to the base station, a precoding matrix indicator (PMI) indicating a precoding matrix selected from a codebook for the y multiple antenna ports.

公开(公告)号：US10575200B2

公开(公告)日：2020-02-25

申请号：US15757644

申请日：2016-09-02

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Kijun Kim ,  Byounghoon Kim ,  Jonghyun Park

IPC: H04W24/10 ,  H04B7/0417 ,  H04L5/00 ,  H04B7/04 ,  H04B7/06

Abstract: According to one aspect of the present invention, a method for reporting channel state information (CSI) of a terminal in a wireless communication system comprises the steps of: receiving, from a base station, channel state information-reference signal (CSI-RS) resource information on a CSI-RS resource to which a CSI-RS is mapped; receiving the CSI-RS from the base station on the basis of the received CSI-RS resource information, by using at least one antenna port; and reporting, to the base station, the CSI generated on the basis of the received CSI-RS, wherein the CSI-RS resource can be configured by aggregating a plurality of legacy CSI-RS resources.

公开(公告)号：US10567045B2

公开(公告)日：2020-02-18

申请号：US16065091

申请日：2017-03-31

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Kijun Kim ,  Jonghyun Park ,  Haewook Park

IPC: H04B7/0417 ,  H04L5/00 ,  H04B7/0456 ,  H04B7/06

Abstract: The present invention provides a method for reporting channel status information (CSI) for downlink transmission to an eNode B (eNB) by a user equipment (UE) in a wireless communication system. Specifically, the method comprises the steps of: receiving a channel status information-reference signal (CSI-RS) from the eNB; calculating the CSI on the basis of the CSI-RS under the assumption that a dual-precoder including a first precoder and a second precoder is applied; and reporting the CSI to the eNB, wherein the step of calculating the CSI includes a step for assuming that at least one of the first precoder and the second precoder is cyclically employed from a predetermined precoder candidate set on the basis of a predetermined resource unit; and information associated with the at least one precoder and information associated with the predetermined precoder candidate set are provided from the eNB through radio resource control (RRC) layer signaling.

公开(公告)号：US10554267B2

公开(公告)日：2020-02-04

申请号：US16309433

申请日：2017-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jonghyun Park ,  Haewook Park ,  Daesung Hwang

IPC: H04B7/0417 ,  H04B7/06 ,  H04B7/0456

Abstract: Disclosed in the present invention is a method by which a terminal reports channel status information (CSI) to a base station in a wireless communication system. The method comprises the steps of: receiving, through an upper layer, information on one CSI process having a first enhanced multiple input multiple output (eMIMO) type and a second eMIMO type; receiving a first channel status information-reference signal (CSI-RS) corresponding to the first eMIMO type; periodically reporting, to the base station, first CSI measured on the basis of the first CSI-RS; receiving a second CSI-RS, which corresponds to the second eMIMO type, beamformed on the basis of the first CSI; and periodically reporting, to the base station, second CSI measured on the basis of the second CSI-RS, wherein a priority of the first CSI is set to be equal to a priority of a CSI-RS resource indicator (CRI).

公开(公告)号：US10476575B2

公开(公告)日：2019-11-12

申请号：US15747003

申请日：2016-07-25

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Kijun Kim ,  Jonghyun Park

IPC: H04B7/06 ,  H04B7/0413

Abstract: Disclosed are a codebook-based signal transmission/reception method in a multi-antenna wireless communication system, and a device for same. Specifically, provided is a method by which a terminal transmits/receives a signal on the basis of a codebook, in a 2-dimensional multi-antenna wireless communication system, comprising the steps of: receiving a channel state information reference signal (CSI-RS) from a base station, via a multi-antenna port; and reporting channel state information to the base station. The channel state information comprises a precoding matrix indicator (PMI) for indicating a precoding matrix. The PMI comprises a first PMI for selecting a precoding matrix set from a codebook, and a second PMI for selecting one precoding matrix from the precoding matrix set. The pair of the first dimensional index and second dimensional index of the precoding matrix belonging to the precoding matrix set is (x, y), (x+2, y), (x, y+1), (x+1, y+1), x and y being whole numbers that are not negative.