公开(公告)号：US10567053B2

公开(公告)日：2020-02-18

申请号：US16221123

申请日：2018-12-14

Applicant: LG ELECTRONICS INC.

Inventor： Hyun Soo Ko ,  Jae Hoon Chung ,  Seung Hee Han ,  Moon Il Lee

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/06 ,  H04L25/03 ,  H04L27/26 ,  H04W72/02 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: The present invention relates to a method for transmitting, by a base station, a downlink signal using a plurality of transmission antennas comprises the steps of: applying a precoding matrix indicated by the PMI, received from a terminal, in a codebook to a plurality of layers, and transmitting the precoded signal to the terminal through a plurality of transmission antennas. Among precoding matrices included in the codebook, a precoding matrix for even number transmission layers can be a 2×2 matrix containing four matrices (W1s), the matrix (W1) having rows of a number of transmission antennas and columns of half the number of transmission layers, the first and second columns of the first row in the 2×2 matrix being multiplied by 1, the first column of the second row being multiplied by coefficient “a” of a phase, and the first column of the second row being multiplied by “−a”.

公开(公告)号：US10419184B2

公开(公告)日：2019-09-17

申请号：US16247418

申请日：2019-01-14

Applicant: LG ELECTRONICS INC.

Inventor： Moon Il Lee ,  Ja Ho Koo ,  Jae Hoon Chung ,  Bin Chul Ihm ,  Hyun Soo Ko

IPC: H04L5/00 ,  H04W24/10 ,  H04W72/08

Abstract: A method of transmitting a reference signal by a base station in a wireless communication system is provided. The method includes: generating a plurality of reference signals for channel measurement, wherein the plurality of reference signals for channel measurement are different types; and transmitting the plurality of reference signals for channel measurement, wherein the plurality of reference signals for channel measurement are transmitted using one or more subframes as a duty cycle.

公开(公告)号：US10341997B2

公开(公告)日：2019-07-02

申请号：US15862557

申请日：2018-01-04

Applicant: LG ELECTRONICS INC.

Inventor： Seung Hee Han ,  Ji Woong Jang ,  Jae Hoon Chung ,  Han Gyu Cho ,  Yeong Hyeon Kwon ,  Seung Hyun Kang

IPC: H04B7/26 ,  H04L1/00 ,  H04W72/04 ,  H04L27/18 ,  H04L27/26 ,  H04L5/00 ,  H04J13/00 ,  H04L1/18 ,  H04J11/00

Abstract: Disclosed are a method and a device for transmitting uplink control information (UCI) by a terminal in a wireless communication system. The UCI transmission method comprises the steps of: generating an encoding information bit stream by performing channel coding for a UCI bit stream; generating complex modulation symbols by performing modulation for the generated encoding information bit stream; spreading the complex modulation symbols in block-wise on the basis of an orthogonal sequence; and transmitting the spread complex modulation symbols to a base station. The encoding information bit stream is generated by a channel coding for circularly repeating the UCI bit stream.

公开(公告)号：US20190098631A1

公开(公告)日：2019-03-28

申请号：US16202240

申请日：2018-11-28

Applicant: LG Electronics Inc.

Inventor： Jae Hoon Chung ,  So Yeon Kim ,  Sungho Moon ,  Seunghee Han ,  Yeong Hyeon Kwon

IPC: H04W72/04 ,  H04L5/00 ,  H04J11/00 ,  H04L1/00 ,  H04W72/12 ,  H04W72/14 ,  H04W88/08

Abstract: Embodiments of the present invention are directed to a method and apparatus for transmitting and receiving a control signal (for example, PDCCH signal) in an asymmetric multicarrier environment. The method for transmitting a control signal for an asymmetric multicarrier in a wireless connection system according to one embodiment of the present invention comprises: determining the size of a carrier indicator field (CIF) indicating a downlink component carrier (DL CC) by which downlink data is transmitted, on the basis of a maximum value of the number of DL CCs and of the number of uplink component carriers (UL CCs) being managed in a base station; transmitting the CIF on a 1st DL CC to a terminal through a physical downlink control channel (PDCCH); and transmitting downlink data on a 2nd DL CC indicated by the CIF to the terminal through a physical downlink shared channel (PDSCH).

公开(公告)号：US10193614B2

公开(公告)日：2019-01-29

申请号：US16011190

申请日：2018-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Kyu Jin Park ,  Jae Hoon Chung ,  Han Gyu Cho ,  Yeong Hyeon Kwon ,  Sung Ho Moon

IPC: H04W4/06 ,  H04B7/155 ,  H04B7/26 ,  H04L5/00 ,  H04L27/26

Abstract: A method for receiving data by a relay station (RS) in a wireless communication system includes: receiving radio resource allocation information via an R-PDCCH (R-Physical Downlink Control Channel); and receiving data from a base station (BS) via an R-PDSCH (R-Physical Downlink Shared Channel) indicated by the radio resource allocation information, wherein the radio resource allocation information includes information regarding an allocation of resource blocks in a frequency domain and information regarding an allocation of OFDM symbols in a time domain. Since the radio resource allocation information providing information regarding a time relationship between a control channel transmitted by the BS to a UE and a control channel transmitted by the RS to a UE connected to the RS is provided, the RS can reliably receive a signal transmitted from the BS in a backhaul link between the BS and the RS in a wireless communication system including the RS.

公开(公告)号：US10142979B2

公开(公告)日：2018-11-27

申请号：US15437659

申请日：2017-02-21

Applicant: LG ELECTRONICS INC.

Inventor： So Yeon Kim ,  Young Woo Yun ,  Ki Jun Kim ,  Moon Il Lee ,  Hyun Soo Ko ,  Jae Hoon Chung ,  Ji Ae Seok ,  Seung Hyun Kang ,  Suk Hyon Yoon ,  Joon Kui Ahn

IPC: H04W72/04 ,  H04L5/00

Abstract: A method for transmitting a downlink control channel in a mobile communication system and a method for mapping the control channel to physical resources using a block interleaver are provided. In order to transmit a downlink control channel in a mobile communication system, information bits are modulated to generate one or more modulation symbols according to a specific modulation scheme, the modulation symbols are interleaved using a block interleaver, and the interleaved modulated symbols are mapped to resource elements allocated for transmission of at least one control channel in a subframe, thereby transmitting the at least one control channel.

公开(公告)号：US10033498B2

公开(公告)日：2018-07-24

申请号：US15412761

申请日：2017-01-23

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Hyun Soo Ko ,  Seung Hee Han ,  Jae Hoon Chung ,  Moon Il Lee

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/06 ,  H04W88/06

Abstract: A method for transmitting a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH), by a user equipment (UE), in a wireless communication system. The UE generates first, second, and third DMRS sequences, which are associated with first, second, and third layers respectively, by applying first, second, and third cyclic shifts to the first, second, and third DMRS sequences respectively. The UE transmits the first, second, and third DMRS sequences to a base station, wherein the first, second, and third cyclic shifts are determined based on first, second, and third cyclic shift values respectively. The first and second cyclic shift values are separated from each other by a maximum separation value, which is determined based on a total number of cyclic shifts. The third cyclic shift value is determined by increasing cyclically by a median separation value between the first and second cyclic shift values.

公开(公告)号：US10028265B2

公开(公告)日：2018-07-17

申请号：US15402887

申请日：2017-01-10

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Moon Il Lee ,  Jae Hoon Chung ,  Sung Ho Moon ,  Seung Hee Han

IPC: H04J3/00 ,  H04W72/04 ,  H04L5/14 ,  H04L5/00

Abstract: A method for mapping, by a base station, a channel state information reference signal (CSI RS) in a wireless communication system, the method comprising: generating the CSI for eight antenna ports; selecting a resource element (RE) set from a plurality of RE sets in a subframe using an extended cyclic prefix (CP), wherein the selected RE set includes four pairs of REs in consecutive orthogonal frequency division multiplexing (OFDM) symbols, and wherein the four pairs of REs are separated from each other by constant subcarrier spacing in the consecutive OFDM symbols; and mapping the CSI RS for the eight antenna ports to the selected RE set.

公开(公告)号：US09992763B2

公开(公告)日：2018-06-05

申请号：US15222736

申请日：2016-07-28

Applicant: LG ELECTRONICS INC.

Inventor： Moon Il Lee ,  Jae Hoon Chung ,  Hyun Soo Ko ,  Bin Chul Ihm ,  Yeong Hyeon Kwon

IPC: G06F11/00 ,  H04J1/16 ,  H04L1/00 ,  H04L12/26 ,  H04W72/02 ,  H04B7/06 ,  H04W52/14 ,  H04W52/36 ,  H04W72/04 ,  H04W52/34 ,  H04B7/0404 ,  H04W52/32 ,  H04W52/42 ,  H04W52/24

CPC classification number: H04W72/02 ,  H04B7/0404 ,  H04B7/0691 ,  H04W52/146 ,  H04W52/242 ,  H04W52/325 ,  H04W52/346 ,  H04W52/367 ,  H04W52/42 ,  H04W72/0413 ,  H04W72/0473

Abstract: A user equipment in wireless communication system is provided. The user equipment includes an antenna unit including a plurality of antennas, a control unit for grouping the plurality of antennas into a predetermined number of antenna groups and controlling separately transmission power of each of the predetermined number of antenna groups, and a transmitting unit, connected to the control unit, for transmitting at least one of data and control information to a base station via at least one of the predetermined number of antenna groups.

公开(公告)号：US09973310B2

公开(公告)日：2018-05-15

申请号：US15592479

申请日：2017-05-11

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Jae Hoon Chung ,  Yeong Hyeon Kwon ,  Seung Hee Han ,  Moon Il Lee

IPC: H04L29/06 ,  H04L5/00

CPC classification number: H04L5/0007 ,  H04L5/0048

Abstract: A method for transmitting an aperiodic sounding reference signal (SRS) to a base station by a user equipment (UE) in a wireless communication system, the method includes receiving, from the base station, an uplink grant or a downlink grant, with an indicator indicating a transmission of the aperiodic SRS; and transmitting, to the base station, the aperiodic SRS in a first uplink subframe; wherein the first uplink subframe is a subframe firstly configured after a second uplink subframe for the aperiodic SRS, wherein, if the uplink grant is received, the second uplink subframe is a subframe in which an uplink data signal scheduled by the uplink grant is transmitted, wherein, if the downlink grant is received, the second uplink subframe is a subframe in which an uplink control signal corresponding to the downlink grant is transmitted.