公开(公告)号：US10812236B2

公开(公告)日：2020-10-20

申请号：US16439111

申请日：2019-06-12

Applicant: LG Electronics Inc.

Inventor： Kunil Yum ,  Jiwon Kang ,  Kijun Kim ,  Hyungtae Kim ,  Yunjung Yi

IPC: H04L5/00 ,  H04W76/27 ,  H04B7/06 ,  H04W72/04

Abstract: This specification provides a method for transmitting, by a user equipment (UE), a CSI (Channel State Information) report in a wireless communication system. More specifically, the method includes: receiving, from a base station, downlink control information (DCI) including information for triggering the CSI report; computing CSI based on the number of symbols related to a time for computing the CSI; and transmitting the CSI report to the base station, in which the number of symbols related to the time for computing the CSI is defined based on information for the number of antenna ports, information for a CSI-RS resource, information for a bandwidth granularity, and information for a CSI codebook type.

公开(公告)号：US10771213B2

公开(公告)日：2020-09-08

申请号：US16090150

申请日：2017-03-31

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04W76/27 ,  H04B7/06 ,  H04W72/12 ,  H04B7/0456 ,  H04L5/14

Abstract: Disclosed is a method by which a terminal reports channel status information (CSI) to a base station in a wireless communication system, so as to perform a demodulation reference signal (DM-RS)-based downlink transmission through a multi-layer. Particularly, the method comprises the steps of: receiving a channel status information-reference signal (CSI-RS) from the base station; calculating the CSI on the basis of the CSI-RS, on the assumption that a dual pre-coder composed of a first pre-coder and a second pre-coder is applied; and reporting the calculated CSI to the base station, wherein column vectors of the second pre-coder are composed of a single discrete Fourier transform (DFT) vector.

公开(公告)号：US10727908B2

公开(公告)日：2020-07-28

申请号：US16312978

申请日：2017-07-11

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jonghyun Park ,  Haewook Park

IPC: H04B7/0417 ,  H04B7/06 ,  H04W72/04 ,  H04W72/14

Abstract: Disclosed is a method for a terminal reporting aperiodic channel status information (CSI) to a base station in a wireless communication system. The method comprises the steps of: receiving, from a base station via downlink control information (DCI), a CSI report triggering message of at least one CSI process, among multiple CSI processes, that is connected with one enhanced multiple input multiple output (eMIMO) type among a first eMIMO type and a second eMIMO type; and updating an aperiodic CSI associated with the at least one CSI process and reporting same to the base station based on a reference signal corresponding to the one eMIMO type.

公开(公告)号：US10720972B2

公开(公告)日：2020-07-21

申请号：US15762917

申请日：2016-09-26

Applicant: LG ELECTRONICS INC.

Inventor： Jonghyun Park ,  Hyungtae Kim ,  Kijun Kim

IPC: H04L1/00 ,  H04B7/0417 ,  H04L5/00 ,  H04W24/10 ,  H04B7/06 ,  H04B7/0452 ,  H04W72/04

Abstract: Disclosed are a method for transmitting and 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, setting information for a single CSI process including a first channel state information-reference signal (CSI-RS) configuration, which is associated with K CSI-RS resources of a beamformed CSI-RS type, K being greater than one, and a second CSI-RS configuration, which is associated with one CSI-RS resource of the beamformed CSI-RS type; reporting, to the base station, an indicator indicating a CSI-RS resource selected from among the K CSI-RS resources; and reporting, to the base station, a channel quality indicator (CQI)/precoding matrix indicator (PMI)/rank indicator (RI) derived on the basis of the one CSI-RS resource.

公开(公告)号：US10707937B2

公开(公告)日：2020-07-07

申请号：US16067473

申请日：2017-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim ,  Jonghyun Park

IPC: H04B7/06 ,  H04B7/02 ,  H04L1/06 ,  H04L5/00 ,  H04B7/0456 ,  H04W72/04

Abstract: A method by which a terminal receives a downlink signal in a wireless access system is disclosed. The method comprises the steps of: receiving information on a plurality of channel status information (CSI) processes including two or more CSI-reference signals (CSI-RSs); receiving a downlink control signal including an indicator indicating a specific CSI-RS; selecting a quasi co-located (QCL) CSI process in which the specific CSI-RS is configured as a representative CSI-RS from among the plurality of CSI processes; selecting, as a QCL CSI-RS or a demodulation reference signal (DM-RS), a CSI-RS corresponding to the most recently reported CSI-RS indicator from among the two or more CSI-RSs included in the QCL CSI process; and receiving a downlink data signal by using the DM-RS and the QCL CSI-RS.

公开(公告)号：US10693540B2

公开(公告)日：2020-06-23

申请号：US16482579

申请日：2018-01-31

Applicant: LG Electronics Inc.

Inventor： Hyungtae Kim ,  Haewook Park

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/0417

Abstract: Disclosed in the present application is a method for a terminal periodically reporting, to a base station, channel state information on the basis of a linear combination codebook in a wireless communication system. Particularly, the method comprises the steps of: receiving a reference signal from the base station; and reporting channel state information which has been outputted to the base station on the basis of the reference signal, wherein the channel state information includes a channel quality indicator and information relating to a precoding matrix index, and when a rank outputted on the basis of the reference signal is 2, the precoding matrix index is selected from a codebook which has been sub-sampled, wherein a precoding matrix constituting the sub-sampled codebook comprises a first column vector for a first layer and a second column vector for a second layer that crosses the first column vector, wherein the information relating to the precoding matrix index indicates three co-phase coefficients defining the first column vector as a 4-bit size, and wherein three co-phase coefficients defining the second column vector are identical to the three co-phase coefficients defining the first column vector.

公开(公告)号：US10587316B2

公开(公告)日：2020-03-10

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：US10560168B2

公开(公告)日：2020-02-11

申请号：US15779372

申请日：2016-11-25

Applicant: LG ELECTRONICS INC.

Inventor： Haewook Park ,  Inkwon Seo ,  Hyungtae Kim ,  Myoungseob Kim

IPC: H04B7/06 ,  H04B7/024

Abstract: A method for multiuser superposition transmission (MUST) in a wireless communication system, and a device therefor are disclosed. Particularly, a method by which a first base station (eNodeB (eNB)) performs MUST involving joint transmission in a wireless communication system can comprise the steps of: receiving, from a MUST-paired near user equipment (UE), first channel state information (CSI) for the first eNB participating in the joint transmission; setting a parameter required to perform the MUST involving the joint transmission for the MUST-paired UE, on the basis of the first CSI and the second CSI for a second eNB participating in the joint transmission; and transmitting the parameter to the MUST-paired UE and the second eNB.

公开(公告)号：US10477533B2

公开(公告)日：2019-11-12

申请号：US15754878

申请日：2016-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Kim

IPC: H04W72/04 ,  H04W76/11 ,  H04L5/00 ,  H04L27/34

Abstract: The present application discloses a method for receiving, by a terminal, a downlink signal from a base station in a wireless communication system. Specifically, the method comprises: receiving a downlink control signal comprising first control information for a first band and second control information for a second band; receiving a first downlink data signal on the first band on the basis of the first control information; and receiving a second downlink data signal multiplexed with a downlink signal for a paired terminal on the second band on the basis of the second control information, wherein the second control information comprises identification information for distinguishing the second downlink data signal from the downlink signal for the paired terminal.

公开(公告)号：US10439846B2

公开(公告)日：2019-10-08

申请号：US15324616

申请日：2015-07-16

Applicant: LG ELECTRONICS INC.

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

IPC: H04L25/02 ,  H04L5/00 ,  H04B7/0452 ,  H04B7/0456 ,  H04J13/00 ,  H04J13/18 ,  H04W72/04

Abstract: A method by which a terminal estimates a channel in a wireless access system can comprises the steps of: receiving mapping information on a port and a layer of a data demodulation reference signal (DMRS); receiving change information on whether the port of the DMRS has been changed; and determining a change in port information on the basis of an indicator and estimating a channel of the DMRS.