公开(公告)号：US20180254867A1

公开(公告)日：2018-09-06

申请号：US15759624

申请日：2016-09-07

Applicant: LG ELECTRONICS INC.

Inventor： Kijun KIM ,  Hyungtae KIM ,  Jonghyun PARK

IPC: H04L5/00 ,  H04B7/0452

CPC classification number: H04L5/0048 ,  H04B7/0452 ,  H04L5/0023 ,  H04L5/0051

Abstract: The present invention relates to a wireless communication system, and specifically provides a method for transmitting and receiving a demodulation reference signal (DMRS), and an apparatus using the same. More specifically, the present invention provides a method for transmitting and receiving a DMRS and an apparatus using the same, wherein a base station allocates a Walsh sequence for each antenna port to the DMRS for each antenna port using a method that is different from conventional methods, and thereby increases the number of user equipment that are MU-MIMO paired compared to the past, and can satisfy orthogonality between four DMRS sequences in both time and frequency domains so that user equipment receiving the DMRS can efficiently estimate a channel.

公开(公告)号：US20180254814A1

公开(公告)日：2018-09-06

申请号：US15760161

申请日：2016-09-13

Applicant: LG ELECTRONICS INC.

Inventor： Haewook PARK ,  Kijun KIM ,  Hyungtae KIM ,  Inkwon SEO

IPC: H04B7/06 ,  H04B7/0456

Abstract: A method for transmitting and receiving channel state information (CSI) in a wireless communication system, and an apparatus therefor are disclosed. Specifically, a method for a terminal transmitting CSI in a wireless communication system supporting multi-user superposition transmission (MUST) may comprise the steps of: reporting to a base station a first precoding matrix indicator (PMI) indicating a precoding matrix that is the most preferred by the terminal, and a first channel quality indicator (CQI) that is calculated assuming use of the first PMI; and reporting to the base station a second PMI indicating a precoding matrix that is secondly preferred by the terminal, and a second CQI that is calculated assuming use of the second PMI.

公开(公告)号：US20180184433A1

公开(公告)日：2018-06-28

申请号：US15128910

申请日：2015-05-18

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Kijun KIM ,  Joonkui AHN ,  Byounghoon KIM ,  Hanjun PARK ,  Hyunho Lee

IPC: H04W72/08 ,  H04J11/00 ,  H04L5/00

CPC classification number: H04W72/082 ,  H04J11/00 ,  H04J11/0023 ,  H04L5/0048

Abstract: The present invention relates to a wireless communication system. A method for a terminal for receiving a signal by means of NAICS (Network Assisted Interference Cancellation and Suppression) in a wireless communication system supporting a carrier aggregation according to one embodiment of the present invention comprises the steps of: transmitting terminal capability information comprising band combination information indicating the band combination supported by the terminal on the carrier aggregation; and receiving the signal on the basis of the terminal capability information, wherein the band combination information may comprise a number for the maximum number of component carriers (CC) supporting the NAICS for the band combination.

公开(公告)号：US20180115386A1

公开(公告)日：2018-04-26

申请号：US15560828

申请日：2016-03-22

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin SHIN ,  Kijun KIM ,  Hyungtae KIM ,  Inkwon SEO ,  Yunjung YI

IPC: H04L1/00 ,  H04L27/00 ,  H04W52/14

CPC classification number: H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0091 ,  H04L27/00 ,  H04L27/0008 ,  H04L27/26 ,  H04L27/34 ,  H04W52/143

Abstract: The present specification relates to a method for transmitting and receiving data using non-orthogonal multiple access in a wireless communication system, which is performed by a base station, the method comprising: configuring a first modulation scheme and first transmission power for a first signal to be transmitted to a first terminal; configuring a second modulation scheme and second transmission power for a second signal to be transmitted to a second terminal; transmitting the first signal and the second signal through the same time-frequency resource; and transmitting, to the second terminal, control information related to the cancellation of interference caused by the first signal.

公开(公告)号：US20180084559A1

公开(公告)日：2018-03-22

申请号：US15558532

申请日：2016-04-08

Applicant: LG ELECTRONICS INC.

Inventor： Kijun KIM ,  Hyungtae KIM ,  Yunjung YI

IPC: H04W72/08 ,  H04W72/04

Abstract: A method for receiving interference downlink control information of a terminal equipped with an interference cancellation capability in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving, from a base station, information regarding a transmission mode or method of candidate interference downlink control information; receiving, from the base station, as the transmission mode or method of the interference downlink control information, information indicating one from among the transmission mode or method of candidate interference downlink control information, or a transmission mode or method identical to the downlink control information for the terminal itself; and detecting interference downlink control information by searching only the downlink control information of the indicated transmission mode or method of the interference downlink control information.

公开(公告)号：US20180076993A1

公开(公告)日：2018-03-15

申请号：US15554141

申请日：2016-03-09

Applicant: LG ELECTRONICS INC.

Inventor： Inkwon SEO ,  Kijun KIM ,  Hyungtae KIM

IPC: H04L27/26 ,  H04L27/38 ,  H04L27/36 ,  H04J99/00 ,  H04W52/18

Abstract: A method for receiving a signal by a first terminal in a wireless communication system supporting non-orthogonal multiple access (NOMA) according to an embodiment of the present invention comprises the steps of: receiving a NOMA signal in which signals for each of the first terminal and a second terminal belonging to the same NOMA pair are superposed; and demodulating the signal for the first terminal from the NOMA signal, using at least a part of a NOMA constellation which is configured by considering downlink transmission power and a modulation order for the second terminal, wherein only a bit corresponding to one digit is differently configured between the bit sequences of NOMA constellation points adjacent to each other in the NOMA constellation, and the complex coordinates (I, Q) of the NOMA constellation points are determined on the basis of a combination of downlink transmission power for the first terminal and the downlink transmission power for the second terminal.

公开(公告)号：US20180070265A1

公开(公告)日：2018-03-08

申请号：US15558046

申请日：2016-04-21

Applicant: LG ELECTRONICS INC.

Inventor： Inkwon SEO ,  Kijun KIM ,  Hyungtae KIM

IPC: H04W28/04 ,  H04L1/18 ,  H04L1/00 ,  H04W52/24

CPC classification number: H04W28/04 ,  H04J11/00 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1896 ,  H04L1/20 ,  H04W52/243 ,  H04W52/48 ,  H04W72/082 ,  H04W74/0833

Abstract: A method for receiving signals by a first terminal in a wireless communication system supporting non-orthogonal multiple access (NOMA), according to one embodiment of the present invention, comprises the steps of: obtaining downlink control information with respect to a second terminal which is NOMA-paired with the first terminal; receiving NOMA signals in which a first physical downlink shared channel (PDSCH) with respect to the first terminal and a second PDSCH with respect to the second terminal are multiplexed by different transmission power values; and removing interference by the second PDSCH from the NOMA signals on the basis of the downlink control information with respect to the second terminal. In the step of removing the interference by the second PDSCH, if the second PDSCH is re-transmitted to the second terminal by an HARQ process, the interference by the second PDSCH can be removed by reusing predetermined information obtained by the first terminal at the time of initial transmission with respect to the HARQ process.

公开(公告)号：US20180027572A1

公开(公告)日：2018-01-25

申请号：US15712828

申请日：2017-09-22

Applicant: LG ELECTRONICS INC.

Inventor： Kijun KIM ,  Jonghyun PARK ,  Hyunho LEE ,  Hyungtae KIM

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/00 ,  H04J11/00 ,  H04L27/26 ,  H04W72/04 ,  H04W88/02

CPC classification number: H04W72/082 ,  H04J11/0053 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0073 ,  H04L27/261 ,  H04W72/005 ,  H04W72/0446 ,  H04W88/02

Abstract: Provided herein is a method for interference cancellation for a UE having interference cancellation capability in a wireless communication system, the method comprising: receiving information on a reference signal transmitted from an interfering cell having the possibility of causing inter-cell interference; and attempting to detect the reference signal using the received information on the reference signal, wherein the information on the reference signal is received when the interfering cell and a serving cell of the UE have the same cyclic prefix (CP) length and are synchronized with each other.

公开(公告)号：US20170302480A1

公开(公告)日：2017-10-19

申请号：US15511603

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Jonghyun PARK ,  Youngtae KIM

IPC: H04L25/02 ,  H04B7/06 ,  H04B7/02

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：US20170215175A1

公开(公告)日：2017-07-27

申请号：US15515502

申请日：2015-12-21

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Myoungseob KIM ,  Seonwook KIM

IPC: H04W72/04 ,  H04W28/02 ,  H04L5/00

Abstract: The present application discloses a method of transmitting, by a relay terminal of a second cell, downlink data for a receiving cell of a first cell in a wireless communication system. Specifically, the method comprises the steps of: receiving downlink data for the receiving terminal of the first cell from the second cell; transmitting control information for the downlink data to the receiving terminal; and transmitting the downlink data to the receiving terminal on the basis of the control information, wherein the downlink data is delivered from the first cell to the second cell via a backhaul link. In particular, the control information is characterized by comprising: data grant which indicates a plurality of resource areas for communication between the relay terminal and the receiving terminal; and a request message for channel state information between the relay terminal and the receiving terminal.