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：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.

公开(公告)号：US09923676B2

公开(公告)日：2018-03-20

申请号：US15644225

申请日：2017-07-07

Applicant: LG Electronics Inc.

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

IPC: H04L1/18 ,  H04W28/02 ,  H04L1/06 ,  H04L25/03 ,  H04B7/0413 ,  H04L5/00 ,  H04W72/04 ,  H04B7/04 ,  H04L1/00

CPC classification number: H04L1/1893 ,  H04B7/04 ,  H04B7/0413 ,  H04L1/0041 ,  H04L1/06 ,  H04L1/0625 ,  H04L1/0631 ,  H04L5/0026 ,  H04L25/03343 ,  H04L25/03929 ,  H04L2025/03426 ,  H04W28/0268 ,  H04W72/046

Abstract: A method of data transmission includes determining the number of layers, generating mapping symbols by mapping modulation symbols for a first codeword and modulation symbols for a second codeword to each layer, and transmitting the mapping symbols through a plurality of antennas. At least one of the first codeword and the second codeword is mapped to at least 3 layers and the number of layers is larger than 3.

公开(公告)号：US09900869B2

公开(公告)日：2018-02-20

申请号：US15390175

申请日：2016-12-23

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

CPC classification number: H04W72/0413 ,  H04B7/26 ,  H04J13/0048 ,  H04J13/0074 ,  H04J2011/0006 ,  H04J2011/0016 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0073 ,  H04L1/1861 ,  H04L5/0055 ,  H04L27/18 ,  H04L27/26 ,  H04L27/2636

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：US09806779B2

公开(公告)日：2017-10-31

申请号：US15133506

申请日：2016-04-20

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

CPC classification number: H04B7/0473 ,  H04B7/0456 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0639 ,  H04B7/0669 ,  H04L25/03898 ,  H04L25/03949 ,  H04L27/2602 ,  H04L27/2633 ,  H04L27/2636 ,  H04W72/02 ,  H04W72/0446 ,  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：US09800364B2

公开(公告)日：2017-10-24

申请号：US15445948

申请日：2017-02-28

Applicant: LG ELECTRONICS INC.

Inventor： Min Seok Noh ,  Seung Hee Han ,  Yeong Hyeon Kwon ,  Hyun Woo Lee ,  Dong Cheol Kim ,  Jin Sam Kwak

IPC: H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04J13/00

CPC classification number: H04J13/0062 ,  H04J11/005 ,  H04L5/0016 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0053 ,  H04L23/02 ,  H04L27/2607 ,  H04L27/261 ,  H04L27/2613

Abstract: Method for generating reference signal sequence using grouping is explained. In this method, base sequences are grouped such that each group contains at least one base sequence of each length, so UE(s) can use various length sequences as a reference signal. And in this method, inter cell interference caused by using various length sequence as a reference signal sequence can be minimized by grouping sequences having the high cross correlation relation.

公开(公告)号：US09750029B2

公开(公告)日：2017-08-29

申请号：US14697751

申请日：2015-04-28

Applicant: LG Electronics Inc.

Inventor： Dong Cheol Kim ,  Seung Hee Han

IPC: H04W72/04 ,  H04W52/42 ,  H04W52/36 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/06 ,  H04W52/14

CPC classification number: H04W72/0473 ,  H04B7/0404 ,  H04B7/0413 ,  H04B7/0678 ,  H04B7/0697 ,  H04W52/146 ,  H04W52/36 ,  H04W52/365 ,  H04W52/42 ,  H04W72/0413

Abstract: Disclosed are a terminal device for controlling uplink transmission power and a method therefor. A receiving antenna receives uplink transmission mode change information from a base station. A processor determines a transmission power value to be used for the uplink transmission by means of an offset value corresponding to the uplink transmission mode change information. A transmitting antenna transmits an uplink signal with the determined transmission power value.

公开(公告)号：US09750009B2

公开(公告)日：2017-08-29

申请号：US15393005

申请日：2016-12-28

Applicant: LG ELECTRONICS INC.

Inventor： Sung Ho Moon ,  Minseok Noh ,  Yeong Hyeon Kwon ,  Jin Sam Kwak ,  Dong Cheol Kim ,  Seung Hee Han ,  Hyun Woo Lee

IPC: H04W4/00 ,  H04W72/04

CPC classification number: H04W72/042 ,  H04L5/0053 ,  H04L5/0058 ,  H04W48/12 ,  H04W72/005 ,  H04W72/0446

Abstract: A method of allocating control information in a wireless communication system is provided. The method includes: allocating essential control information of a first system to a first sub-frame in a frame including a plurality of sub-frames each of which comprises a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; and allocating essential control information of a second system to an nth sub-frame in a fixed position from the first sub-frame (where n is an integer satisfying n>1). Accordingly, in a frame supporting heterogeneous systems, essential control information can be fixedly allocated to a specific position while maintaining the number of system switching points, at which switching occurs between the systems, to one even if a radio resource allocation amount changes between the systems, and thus the essential control information that must be received by all user equipments can be effectively provided without the increase of overhead.

公开(公告)号：US09736880B2

公开(公告)日：2017-08-15

申请号：US14983100

申请日：2015-12-29

Applicant: LG ELECTRONICS INC.

Inventor： Yeong Hyeon Kwon ,  So Yeon Kim ,  Sung Ho Moon ,  Jae Hoon Chung ,  Seung Hee Han

IPC: H04W76/04 ,  H04L1/18 ,  H04L5/00 ,  H04L27/26 ,  H04W52/44 ,  H04W52/02 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W76/046 ,  H04L1/1812 ,  H04L1/1861 ,  H04L1/1864 ,  H04L1/1893 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2601 ,  H04W52/0216 ,  H04W52/44 ,  H04W72/0453 ,  H04W76/27 ,  H04W76/28 ,  H04W88/02 ,  H04W88/08 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23 ,  Y02D70/24

Abstract: A method of activating or deactivating frequency resources at a terminal configured with a primary frequency resource and one or more non-primary frequency resources in a wireless communication system, and the terminal are discussed. The method according to one embodiment includes receiving a medium access control (MAC) signal for activating the one or more non-primary frequency resources; activating the one or more non-primary frequency resources; and deactivating the one or more non-primary frequency resources on expiry of a specific time period configured by radio resource control (RRC) signaling, the specific time period being for which of the one or more non-primary frequency resources are activated.

公开(公告)号：US09722738B2

公开(公告)日：2017-08-01

申请号：US15264246

申请日：2016-09-13

Applicant: LG Electronics Inc.

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

IPC: H04L1/18 ,  H04L25/03 ,  H04L1/06 ,  H04B7/0413 ,  H04L5/00 ,  H04W72/04 ,  H04B7/04 ,  H04W28/02 ,  H04L1/00

CPC classification number: H04L1/1893 ,  H04B7/04 ,  H04B7/0413 ,  H04L1/0041 ,  H04L1/06 ,  H04L1/0625 ,  H04L1/0631 ,  H04L5/0026 ,  H04L25/03343 ,  H04L25/03929 ,  H04L2025/03426 ,  H04W28/0268 ,  H04W72/046

Abstract: A method of data transmission includes determining the number of layers, generating mapping symbols by mapping modulation symbols for a first codeword and modulation symbols for a second codeword to each layer, and transmitting the mapping symbols through a plurality of antennas. At least one of the first codeword and the second codeword is mapped to at least 3 layers and the number of layers is larger than 3.