公开(公告)号：US10903962B2

公开(公告)日：2021-01-26

申请号：US16991520

申请日：2020-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Seunggye Hwang ,  Yunjung Yi ,  Kijun Kim ,  Bonghoe Kim

IPC: H04L5/00 ,  H04L27/26 ,  H04L29/08 ,  H04L25/02 ,  H04L27/20 ,  H04L12/46

Abstract: This specification discloses a method for transmitting a demodulation reference signal (DMRS) in a wireless communication system supporting NB (Narrow-Band)-IoT (Internet of Things), the method performed by a User Equipment (UE) including generating a reference signal sequence used for demodulation; mapping the reference signal sequence to at least one symbol; and transmitting the demodulation reference signal (DMRS) to a base station through a single subcarrier in the at least one symbol.

公开(公告)号：US10756761B2

公开(公告)日：2020-08-25

申请号：US16344260

申请日：2017-07-21

Applicant: LG Electronics Inc.

Inventor： Kwangseok Noh ,  Bonghoe Kim ,  Jinwoo Kim ,  Ilmu Byun ,  Jongwoong Shin ,  Seunggye Hwang

IPC: H03M13/11 ,  H03M13/15 ,  H04L1/00 ,  H03M13/25

Abstract: Disclosed are a method for dividing a carrying block of a Low Density Parity Check (LDPC) code and an apparatus therefor. The method for dividing a LDPC code of the present disclosure can obtain a high throughput by using a limited size of shifting network. Moreover, it is possible to prevent degradation in performance due to a minimum size of code block by performing shortening for a large size of code block while minimizing the number of code blocks. Furthermore, in selection of a minimum size of code block, since a minimum size of code block is selected on the basis of shortening for a relatively large size of code block, it is possible to increase the size of the minimum size of code block.

公开(公告)号：US10750464B2

公开(公告)日：2020-08-18

申请号：US15580672

申请日：2016-06-13

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung Yi ,  Bonghoe Kim

IPC: H04L29/08 ,  H04L29/06 ,  H04W52/18 ,  H04W56/00 ,  H04B7/26 ,  H04L25/03 ,  H04L5/14 ,  H04W88/06 ,  H04W4/70

Abstract: A method and apparatus for performing cellular internet-of-things (CIoT) transmission in a wireless communication system is provided. A base station (BS) configures a frame in a CIoT carrier which is adjacent to a time division duplex (TDD) long-term evolution (LTE) carrier, and performs the CIoT transmission using the frame in the CIoT carrier. A downlink (DL) of the CIoT carrier may be adjacent to the TDD LTE carrier. Or, a DL and an uplink (UL) of the CIoT carrier may be adjacent to the TDD LTE carrier.

公开(公告)号：US10749648B2

公开(公告)日：2020-08-18

申请号：US15744310

申请日：2016-07-13

Applicant: LG ELECTRONICS INC.

Inventor： Hyangsun You ,  Yunjung Yi ,  Bonghoe Kim

IPC: H04L5/00 ,  H04W4/70 ,  H04W4/06 ,  H04L27/26 ,  H04W72/04 ,  H04W72/12

Abstract: Provided is a device and method for transmitting or receiving an uplink channel or a downlink channel. In a wireless communication system, a user equipment: receives a physical downlink control channel (PDCCH) for the user equipment in subframe n; and repeatedly transmits a physical uplink shared channel (PUSCH) corresponding to the PDCCH within D subframe(s) out of every P subframes from subframe n+k, wherein each of k, D, and P is a positive integer, and P may be a predefined value greater than D.

公开(公告)号：US10666338B2

公开(公告)日：2020-05-26

申请号：US15309019

申请日：2015-05-29

Applicant: LG Electronics Inc.

Inventor： Youngtae Kim ,  Hanjun Park ,  Jonghyun Park ,  Kijun Kim ,  Bonghoe Kim ,  Kunil Yum

IPC: H04B7/06 ,  H04L1/20 ,  H04L1/00 ,  H04B7/0456 ,  H04B7/01

Abstract: The present invention relates to a method and device for measuring channel quality by a base station having a two-dimensional active antenna system including multiple antennas. Particularly, the method comprises: receiving channel state information (CSI) generated on the basis of a first reference signal relating to a part of multiple antennas, from a terminal; selecting a precoding and a rank based on a precoding matrix indicator (PMI) and a rank indicator (RI) of the received CSI; generating a port by applying the selected precoding and the selected rank; through the generated port, transmitting, to the terminal, a physical downlink shared channel (PDSCH) and a demodulation-reference signal (DM-RS) configured for the terminal; and receiving, from the terminal, a channel quality indication (CQI) feedback for reducing a mismatch for the CQI of the CSI, wherein the CQI feedback may be generated based on the DM-RS.

公开(公告)号：US20200153530A1

公开(公告)日：2020-05-14

申请号：US16738724

申请日：2020-01-09

Applicant: LG ELECTRONICS INC.

Inventor： Seokmin Shin ,  Yunjung Yi ,  Seonwook Kim ,  Bonghoe Kim

IPC: H04J11/00 ,  H04L27/26 ,  H04L5/00 ,  H04L12/18 ,  H04W56/00 ,  H04W72/04

Abstract: A cell search method of a terminal in a wireless communication system,comprises: a step of receiving a narrow band synchronization signal through a narrow band from a base station; and a step of acquiring time synchronization and frequency synchronization with the base station on the basis of the narrow band synchronization signal and detecting an identifier of the base station, wherein the narrow band has a system bandwidth of 180 kHz and includes twelve carriers arranged at intervals of 15 kHz, and the narrow band synchronization signal consists of a first narrow band synchronization signal and a second narrow band synchronization signal, wherein the first narrow band synchronization signal can be transmitted in a sixth subframe of a radio frame and the second narrow band synchronization signal can be transmitted in a tenth subframe of the radio frame.

公开(公告)号：US10602499B2

公开(公告)日：2020-03-24

申请号：US15874736

申请日：2018-01-18

Applicant: LG ELECTRONICS INC.

Inventor： Jihyun Lee ,  Seungmin Lee ,  Hakseong Kim ,  Hanbyul Seo ,  Bonghoe Kim

IPC: H04W72/04 ,  H04L5/00

Abstract: Provided is a method for receiving a downlink signal by a user equipment (UE) in a wireless communication system according to one embodiment of the present disclosure, comprising: receiving a plurality of parameter sets for Semi Persistent Scheduling (SPS)-physical downlink shared channel (PDSCH) through higher layer signaling; receiving a downlink control information (DCI) configuring the SPS-PDSCH; and decoding the SPS-PDSCH using one of the received plurality of parameter sets, wherein the parameter set to be used for decoding is determined based on whether an indicator indicating the parameter set to be used for decoding is included in the DCI.

公开(公告)号：US10601626B2

公开(公告)日：2020-03-24

申请号：US15765458

申请日：2016-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kijun Kim ,  Hyunsoo Ko ,  Byounghoon Kim ,  Yunjung Yi ,  Seokmin Shin

IPC: H04L27/26 ,  H04L5/00 ,  H04J11/00 ,  H04W56/00 ,  H04W72/04 ,  H04W76/28 ,  H04W76/27 ,  H04B7/06 ,  H04J13/00

Abstract: The present invention provides a method and devices for transmitting and receiving a synchronization signal and a method for generating a synchronization signal in a wireless access system supporting narrowband Internet of Things (NB-IoT). A method for transmitting a primary synchronization signal (PSS) by a base station in a wireless access system supporting narrowband Internet of Things (NB-IoT), according to an embodiment of the present invention, can comprise the steps of: repeatedly generating first sequences n times so as to generate primary synchronization signals; multiplying n first sequences by second sequences and thus generating n primary synchronization signals; and transmitting n primary synchronization signals by means of n OFDM symbols, respectively. The size of a bandwidth used in the wireless access system supporting NB-IoT is the size of one physical resource block (PRB), and one PRB can comprise twelve subcarriers in a frequency domain.

公开(公告)号：US10581548B2

公开(公告)日：2020-03-03

申请号：US16065372

申请日：2016-12-13

Applicant: LG ELECTRONICS INC.

Inventor： Kijun Kim ,  Bonghoe Kim ,  Yunjung Yi ,  Seokmin Shin

IPC: H04L27/32 ,  H04J11/00 ,  H04L27/26 ,  H04J13/00 ,  H04L5/00

Abstract: The present invention provides a method and an apparatus for transmitting a primary synchronization signal in a wireless access system. As an example, the present invention may be also applied to a wireless access system for supporting narrow band internet of things (NB-IoT). In the present invention, proposed is a method for mapping a primary synchronization signal (PSS) to a plurality of orthogonal frequency division multiplexing (OFDM) symbols separated by cyclic prefix (CP).

公开(公告)号：US10574404B2

公开(公告)日：2020-02-25

申请号：US16065090

申请日：2017-04-19

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kijun Kim ,  Byounghoon Kim ,  Joonkui Ahn

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

Abstract: A method for transmitting a hybrid automatic repeat and request (HARQ) ACK/NACK signal by a reception side in a wireless communication system may further comprise the steps of: receiving a transmission block including a plurality of code blocks from a transmission side; decoding the received transmission block; and transmitting an ACK/NACK for the transmission block in units of code block groups, wherein the code.