公开(公告)号：US20190132031A1

公开(公告)日：2019-05-02

申请号：US16079079

申请日：2017-02-23

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Jonghyun PARK ,  Kijun KIM ,  Hyungtae KIM

IPC: H04B7/0456 ,  H04B7/06

Abstract: A method and an apparatus for transmitting and receiving channel state information in a multi-antenna wireless communication system are disclosed. Specifically, a method for reporting channel state information (CSI), by a User Equipment (UE), in a multi-antenna wireless communication system, the method comprising receiving, from a base station, configuration information for single CSI reporting in which a non-precoded CSI-RS based CSI reporting and a beamformed CSI-RS based CSI reporting are combined, reporting a first Precoding Matrix Indicator (PMI) and/or a first Rank Indicator (RI) derived based on a non-precoded CSI-RS to the base station, and reporting a Channel Quality Indicator (CQI), a second PMI, and a second RI based on a beamformed CSI-RS to the base station, wherein a value of the first RI is determined as only a value belonging to a previously determined set.

公开(公告)号：US20190124534A1

公开(公告)日：2019-04-25

申请号：US16089904

申请日：2017-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Kunil YUM ,  Jonghyun PARK ,  Haewook PARK

IPC: H04W24/10

Abstract: The present invention according to one embodiment comprises the steps of: receiving linear-combination (LC) code word-based channel state reporting configuration, which is expressed by parameters comprising an LC coefficient and a phase differential (co-phase) value between antenna groups having mutually different polarization characteristics; measuring a downlink reference signal for a channel state reporting in accordance with the received channel state reporting configuration; and transmitting, to a base station, the LC code book-based channel state report corresponding to the reference signal measurement, wherein the channel state reporting can only support a broadband reporting mode.

公开(公告)号：US20190097710A1

公开(公告)日：2019-03-28

申请号：US16124550

申请日：2018-09-07

Applicant: LG Electronics Inc.

Inventor： Haewook PARK ,  Kijun KIM

IPC: H04B7/06 ,  H04W72/04 ,  H04L1/16 ,  H04L27/26

Abstract: This specification provides a method of transmitting an uplink signal based on a codebook in a wireless communication system. More specifically, the method performed by a UE includes receiving, from a base station, downlink control information (DCI) including a first transmit precoding matrix indicator (TPMI), determining a codebook subset related to the transmission of the uplink signal based on the first TPMI, and transmitting, to the base station, the uplink signal based on the determined codebook subset. Accordingly, there is an advantage in that flexibility in the transmission antenna design of a UE can be increased because the degree of freedom of antenna port selection is increased.

公开(公告)号：US20180375561A1

公开(公告)日：2018-12-27

申请号：US16063226

申请日：2016-12-16

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Jonghyun PARK ,  Kijun KIM

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

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/10 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0094

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 transmitted through one or more antenna ports from the base station on the basis of the received CSI-RS resource information; and reporting, to the base station, the CSI generated on the basis of the received CSI-RS.

公开(公告)号：US20180254812A1

公开(公告)日：2018-09-06

申请号：US15754511

申请日：2016-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Kijun KIM ,  Jonghyun PARK

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/0667 ,  H04L5/0048 ,  H04L5/005

Abstract: Disclosed are a method for transmitting or receiving channel state information in a wireless communication system and a device therefor. Specifically, a method for transmitting channel state information (CSI) by a terminal in a wireless communication system may comprise the steps of: receiving, from a base station, the number of antenna ports specific to one or more channel state information-reference signal (CSI-RS) resources; receiving, by the terminal, a CSI-RS on the one or more antenna ports from the base station; when the number of one or more CSI-RS resource-specific antenna ports configured in the terminal is different from the number of antenna ports in reporting units of the CSI configured in the terminal, estimating a CSI-RS antenna port on the basis of the number of antenna ports in reporting units of the CSI configured in the terminal, and deriving the CSI on the basis of the CSI-RS; and reporting the CSI to the base station.

公开(公告)号：US20180248607A1

公开(公告)日：2018-08-30

申请号：US15754281

申请日：2016-08-22

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Kijun KIM ,  Jonghyun PARK

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/06 ,  H04B7/0632 ,  H04L5/005 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0091

Abstract: Disclosed are a method for transmitting or receiving channel state information in a wireless communication system and an apparatus therefor. Specifically, a method for transmitting channel state information by a terminal in the wireless communication system comprises the steps of: receiving interference measurement restriction information indicating a restriction of interference measurement from a base station; deriving an interference measurement based on a channel state information-interference measurement (CSI-IM) resource in only one first subframe in order to calculate a channel quality indicator (CQI); and reporting the CQI to the base station, wherein the interference restriction information may be independently set for each CSI-IM resource.

公开(公告)号：US20180219603A1

公开(公告)日：2018-08-02

申请号：US15747003

申请日：2016-07-25

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Kijun KIM ,  Jonghyun PARK

IPC: H04B7/06

CPC classification number: H04B7/0639 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0626

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.

公开(公告)号：US20180198499A1

公开(公告)日：2018-07-12

申请号：US15746251

申请日：2016-07-25

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Kijun KIM ,  Jonghyun PARK

IPC: 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：US20180123654A1

公开(公告)日：2018-05-03

申请号：US15565036

申请日：2016-04-11

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun PARK ,  Kijun KIM ,  Haewook PARK

IPC: H04B7/0417 ,  H04B7/06

Abstract: According to the present specification, a method for reporting channel state information (CSI) in a wireless communication system, which is performed by a UE includes: transmitting to a base station UE capability information including control information indicating a codebook configuration supported by the UE with respect to a specific class related with the CSI reporting.Therefore, there is an effect that implementation complexity of the UE can be reduced.