公开(公告)号：US20200091975A1

公开(公告)日：2020-03-19

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

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：US20200053764A1

公开(公告)日：2020-02-13

申请号：US16482230

申请日：2018-01-31

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/12 ,  H04W72/04

Abstract: Disclosed in the present application is a method for a terminal transmitting an uplink signal in a wireless communication system. Particularly, the method comprises the steps of: receiving, from the base station, allocation information for resource blocks in a wideband and information on precoders indicated in sub-band units; configuring the allocated resource blocks into sub-bands including two or more continuous resource blocks; and transmitting the uplink signal through the sub-bands to the base station by applying the precoders to corresponding sub-bands.

公开(公告)号：US20200052763A1

公开(公告)日：2020-02-13

申请号：US16597492

申请日：2019-10-09

Applicant: LG Electronics Inc.

Inventor： Hyungtae KIM ,  Jiwon KANG

IPC: H04B7/06 ,  H04L1/00 ,  H04W72/12 ,  H04W72/04 ,  H04W24/10

Abstract: A method of reporting, by a user equipment (UE), channel state information (CSI) in a wireless communication system, includes: receiving, by the UE and from a base station (BS), downlink control information (DCI) related to an aperiodic CSI report that is to be performed by the UE in a slot n; determining, by the UE, a value nCQI_ref based on a number of symbols Z′ related to a time for computing the CSI; determining, by the UE, a CSI reference resource as being a slot n−nCQI_ref in a time domain that is to be used for the aperiodic CSI report; and transmitting, by the UE and to the BS, the aperiodic CSI report in the slot n, based on the CSI reference resource being slot n−nCQI_ref. The CSI may be calculated by using the most recent A CSI-RS, and thereby the most recent CSI may be reported.

公开(公告)号：US20200028647A1

公开(公告)日：2020-01-23

申请号：US16499740

申请日：2018-03-30

Applicant: LG Electronics Inc.

Inventor： Kyuseok KIM ,  Jiwon KANG ,  Kijun KIM ,  Hyungtae KIM ,  Minki AHN ,  Sukhyon YOON ,  Kilbom LEE

IPC: H04L5/00

Abstract: Disclosed herein are a method and apparatus for performing, by UE, decoding in a wireless communication system. According to the present invention, there may be a method and an apparatus for decoding data in which a demodulation reference signal (DMRS) configured by a base station according to a specific pattern is received from the base station through a DMRS symbol, the demodulation reference signal is transmitted on a specific antenna port and located on the same one or two time-axis symbols as at least one other demodulation reference signal transmitted on another antenna port, the specific pattern is determined according to characteristics of a frequency band in which the demodulation reference signal is transmitted, the demodulation reference signal is mapped to the one or two time-axis symbols using at least one of a first code division multiplexing (CDM) on a frequency axis or a second CDM on a time axis, and the data are decoded using the demodulation reference signal.

公开(公告)号：US20200014449A1

公开(公告)日：2020-01-09

申请号：US16505297

申请日：2019-07-08

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Jonghyun PARK

IPC: H04B7/06 ,  H04B7/0413 ,  H04L5/00 ,  H04B7/04

Abstract: A method for reporting channel status information (CSI) to a base station by a terminal in a wireless access system is disclosed in the present application. The method for reporting CSI comprises the steps of: receiving information on a first CSI process and a second CSI process, each of which includes two or more CSI-reference signal (CSI-RS) resources, through an upper layer; and transmitting, to the base station, a first CSI report according to the first CSI process and a second CSI report corresponding to the second CSI process, wherein the second CSI process is configured to have a rank indicator (RI) value that is the same as the RI of the first CSI process, and the numbers of antenna ports for all the CSI-RS resources included in the first CSI process and the second CSI process are the same.

公开(公告)号：US20190327632A1

公开(公告)日：2019-10-24

申请号：US16475610

申请日：2018-01-03

Applicant: LG Electronics Inc.

Inventor： Hyungtae KIM ,  Jonghyun PARK ,  Kijun KIM ,  Jiwon KANG

IPC: H04W24/10 ,  H04W72/04 ,  H04L5/00 ,  H04W88/02 ,  H04B7/0452 ,  H04B7/06

Abstract: Disclosed is a method by which a terminal reports beam information to a base station in a wireless communication system. The method comprises the steps of: receiving, from the base station, a beam measurement reference signal corresponding to each of a plurality of candidate transmission beams; determining at least one best transmission beam among the plurality of candidate transmission beams on the basis of the beam measurement reference signal; determining at least one worst transmission beam corresponding to each of the at least one best transmission beam among the plurality of candidate transmission beams by using a best reception beam corresponding to the at least one best transmission beam among candidate reception beams; reporting, to the base station, information on the at least one best transmission beam and the at least one worst transmission beam corresponding to the at least one best transmission beam.

公开(公告)号：US20190230647A1

公开(公告)日：2019-07-25

申请号：US16065601

申请日：2017-03-03

Applicant: LG Electronics Inc.

Inventor： Suckchel YANG ,  Joonkui AHN ,  Kijun KIM ,  Eunsun KIM ,  Hyungtae KIM ,  Seonwook KIM ,  Bonghoe KIM ,  Byounghoon KIM ,  Hanbyul SEO

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04J13/18

Abstract: The present invention relates to a wireless communication system, and particularly, to a method and an apparatus for same, the method comprising the steps of: generating a UCI; mapping the UCI on an L number of uplink control channel units; and transmitting the mapped UCI, wherein each of the uplink control channel units comprises an Nc number of REs in a single OFDMA symbol, and the plurality of REs include an Nr number of RS transmission REs and an Nd number of UCI transmission REs, wherein Nc is the sum of Nr and Nd, and wherein L is an integer greater than or equal to one and is variable.

公开(公告)号：US20190181925A1

公开(公告)日：2019-06-13

申请号：US16065704

申请日：2017-01-03

Applicant: LG Electronics Inc.

Inventor： Jiwon KANG ,  Hanbyul SEO ,  Kijun KIM ,  Hyungtae KIM ,  Youngtae KIM ,  Kilbom LEE

IPC: H04B7/0417 ,  H04B7/0456 ,  H04W72/08

Abstract: Disclosed in the present application is a method for transmitting, by a terminal, an uplink signal to a base station through a plurality of antenna ports in a wireless communication system. Specifically, the method comprises the steps of: transmitting, to the base station, uplink reference signals corresponding to the plurality of antenna ports and antenna port grouping information: receiving, from the base station, information on an uplink precoder, which is determined on the basis of the uplink reference signals and the antenna port group information; precoding the uplink signal using the information on the uplink precoder; and transmitting the precoded uplink signal to the base station, wherein the antenna port grouping information comprises information on antenna port groups comprising the plurality of antenna ports and information of the signal distortion level between the antenna port groups.

公开(公告)号：US20190165846A1

公开(公告)日：2019-05-30

申请号：US16200008

申请日：2018-11-26

Applicant: LG Electronics Inc.

Inventor： Hyungtae KIM ,  Jiwon KANG

IPC: H04B7/06 ,  H04W72/12 ,  H04W24/10 ,  H04L1/00 ,  H04W72/04

Abstract: A method of reporting, by a user equipment (UE), channel state information (CSI) in a wireless communication system, includes: receiving, by the UE and from a base station (BS), downlink control information (DCI) related to an aperiodic CSI report that is to be performed by the UE in a slot n; determining, by the UE, a value nCQI_ref based on a number of symbols Z′ related to a time for computing the CSI; determining, by the UE, a CSI reference resource as being a slot n-nCQI_ref in a time domain that is to be used for the aperiodic CSI report; and transmitting, by the UE and to the BS, the aperiodic CSI report in the slot n, based on the CSI reference resource being slot n-nCQI_ref. The CSI may be calculated by using the most recent A CSI-RS, and thereby the most recent CSI may be reported.

公开(公告)号：US20190124539A1

公开(公告)日：2019-04-25

申请号：US16306516

申请日：2017-06-26

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Jonghyun PARK

IPC: H04W24/10 ,  H04B7/06 ,  H04L1/00 ,  H04L5/00

Abstract: Disclosed in the present application is a method by which a terminal reports aperiodic channel status information (CSI) to a base station in a wireless communication system. Particularly, the method comprises the steps of: receiving, from the base station, through downlink control information (DCI), a CSI report triggering message including information on at least one CSI process among a plurality of CSI processes and on one aperiodic reference signal among a plurality of aperiodic reference signal resources included in the at least one CSI process; and updating the aperiodic CSI relating to the at least one CSI process and reporting the same to the base station, on the basis of the one aperiodic reference signal.