公开(公告)号：US20180287844A1

公开(公告)日：2018-10-04

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 ,  H04B7/06 ,  H04W72/04

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：US20180270008A1

公开(公告)日：2018-09-20

申请号：US15756495

申请日：2016-09-02

Applicant: LG ELECTRONICS INC.

Inventor： Yunjung YI ,  Bonghoe KIM ,  Hyunsoo KO

IPC: H04J11/00 ,  H04L27/26 ,  H04W36/24 ,  H04W48/16 ,  H04W48/18 ,  H04W24/10

Abstract: A method and apparatus for performing a cell search in a wireless communication system is provided. A narrowband user equipment (NB UE) performs the cell search at a specific frequency with a fixed frequency offset, and moves to the specific frequency with the fixed frequency offset and a channel raster.

公开(公告)号：US20180152205A1

公开(公告)日：2018-05-31

申请号：US15821393

申请日：2017-11-22

Applicant: LG ELECTRONICS INC.

Inventor： Jinwoo KIM ,  Jongwoong SHIN ,  Bonghoe KIM ,  Byounghoon KIM ,  Kwangseok NOH

IPC: H03M13/27 ,  H04L1/00 ,  H03M13/11

CPC classification number: H03M13/2792 ,  H03M13/09 ,  H03M13/1102 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/255 ,  H03M13/2707 ,  H03M13/2906 ,  H03M13/6306 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/0071 ,  H04L27/3405

Abstract: A method of performing interleaving, which is performed by a communication apparatus using a low-density parity-check code (LDPC), includes outputting LDPC encoded bits to a block interleaver, and performing block interleaving on the LDPC encoded bits inputted to the block interleaver in a unit of a size of one time transport block based on the a position of redundancy version.

公开(公告)号：US20180092130A1

公开(公告)日：2018-03-29

申请号：US15828762

申请日：2017-12-01

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel YANG ,  Joonkui AHN ,  Yunjung YI ,  Hyangsun YOU ,  Bonghoe KIM

IPC: H04W74/08 ,  H04W72/04 ,  H04W4/00 ,  H04W72/12

Abstract: A method for performing a random access procedure by a user equipment (UE) in a wireless communication system supporting coverage enhancement, the method including transmitting, by the UE, a random access preamble and repeatedly receiving, by the UE, a physical downlink control channel (PDCCH) scheduling a random access response (RAR) in response to the random access preamble, wherein, starting subframe information for repeatedly receiving the PDCCH scheduling the RAR is signaled through a system information block (SIB).

公开(公告)号：US20180054289A1

公开(公告)日：2018-02-22

申请号：US15550248

申请日：2016-02-05

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe KIM ,  Yunjung YI

IPC: H04L5/00 ,  H04W4/00 ,  H04B7/26

CPC classification number: H04L5/0053 ,  H04B7/0626 ,  H04B7/2603 ,  H04B7/2612 ,  H04L5/0048 ,  H04W4/021 ,  H04W4/38

Abstract: The present invention relates to a wireless access system supporting a machine-type communication (MTC), and particularly, provided are a method for repeatedly transmitting a physical broadcast channel (PBCH) for an MTC, and apparatus for supporting same. The method for repeatedly transmitting a PBCH for an MTC terminal in a wireless access system supporting MTC according to one embodiment of the present invention may comprise the steps of: transmitting a first PBCH by means of a legacy PBCH transmission region of a first subframe; repeatedly transmitting a second PBCH from the first subframe; and repeatedly transmitting a third PBCH from a second subframe. Here, the present invention can be structured so that the second PBCH and third PBCH are not repeatedly transmitted in the control regions of the first subframe and second subframe.

公开(公告)号：US20180034585A1

公开(公告)日：2018-02-01

申请号：US15663581

申请日：2017-07-28

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe KIM ,  Byounghoon KIM ,  Kwangseok NOH ,  Joonkui AHN

IPC: H04L1/00 ,  H03M13/09 ,  H03M13/11 ,  H03M13/00

Abstract: A method for communication device processing a data block in a low-density parity-check (LDPC) encoder includes the steps of, if a size of a payload is equal to or greater than a prescribed size, performing code block segmentation, and performing encoding in a unit of a code block on code blocks according to the code block segmentation. In this case, the code block segmentation may be performed by a payload size supported by a parity check matrix (H) corresponding to a coding rate of the LDPC encoder.

公开(公告)号：US20180027441A1

公开(公告)日：2018-01-25

申请号：US15548254

申请日：2016-01-14

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae KIM ,  Kijun KIM ,  Hanbyul SEO ,  Bonghoe KIM ,  Yunjung YI

IPC: H04W28/02 ,  H04W52/02 ,  H04W52/24

CPC classification number: H04W28/0221 ,  H04B7/0452 ,  H04B7/0617 ,  H04J11/004 ,  H04L5/0007 ,  H04L5/0016 ,  H04L27/3488 ,  H04W52/0212 ,  H04W52/0238 ,  H04W52/243 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/444

Abstract: A method for receiving a downlink signal from a base station (BS) by a user equipment (UE) in a wireless communication system is disclosed. The method includes receiving power multiplexing information from the BS, receiving a reference signal and the downlink signal from the BS, calculating reception power of an interference signal from reception power of the downlink signal, using the reference signal and the power multiplexing information, and acquiring a data signal of the UE by eliminating the reception power of the interference signal from the reception power of the downlink signal.

公开(公告)号：US20180006845A1

公开(公告)日：2018-01-04

申请号：US15541237

申请日：2016-01-05

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe KIM ,  Kijun KIM ,  Hyungtae KIM ,  Jonghyun PARK

IPC: H04L25/02 ,  H04B7/06

CPC classification number: H04L25/0242 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/065 ,  H04B7/10 ,  H04L5/00 ,  H04L25/02 ,  H04L25/0204 ,  H04L25/0228

Abstract: A method for estimating a channel status by a base station in a wireless communication system according to an embodiment of the present invention comprises the steps of: obtaining an uplink channel matrix by using a sounding reference signal (SRS) received from a terminal; transmitting a channel state information-reference signal (CSI-RS) through at least some antenna devices in a two-dimensional antenna array of the base station; receiving a channel quality indicator (CQI) calculated on the basis of the CSI-RS transmission; and obtaining, through a predetermined correction factor obtained on the basis of the CQI and the uplink channel matrix, a downlink channel matrix for the entire two-dimensional antenna array comprising the remaining antenna devices through which the CSI-RS is not transmitted.

公开(公告)号：US20180006763A1

公开(公告)日：2018-01-04

申请号：US15545458

申请日：2016-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe KIM ,  Yunjung YI

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/04 ,  H04W4/00 ,  H04L1/08

Abstract: Provided are methods for repeatedly transceiving a common control message for a machine-type communication (MTC) terminal in a wireless access system supporting MTC, and apparatuses supporting the methods. A method for receiving a common control message for an MTC terminal in a wireless access system supporting MTC according to one embodiment of the present invention may comprise the steps of: receiving a channel status information reference signal (CSI-RS); and receiving a common control message from a subframe in which the CSI-RS is received. Here, the common control message can be configured so as to be repeatedly transmitted from a previously configured number of subframes comprising the subframe.

公开(公告)号：US20170310374A1

公开(公告)日：2017-10-26

申请号：US15526695

申请日：2015-11-13

Applicant: LG ELECTRONICS INC.

Inventor： Youngtae KIM ,  Bonghoe KIM ,  Kijun KIM ,  Jonghyun PARK

IPC: H04B7/06 ,  H04L5/00 ,  H04L1/18 ,  H04L27/26 ,  H04B7/0452

CPC classification number: H04B7/063 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0671 ,  H04L1/1861 ,  H04L1/1893 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0092 ,  H04L25/02 ,  H04L27/2636

Abstract: The present invention relates to a method by which a base station transmits a reference signal in a wireless communication system supporting a full-dimension antenna, and a device for the same. Particularly, the method comprises the steps of: transmitting, to a terminal, a channel state information-reference signal (CSI-RS) configuration indicating the number of antenna ports for transmitting a full-dimension antenna association reference signal; transmitting, to the terminal, a CSI-RS for at least one first antenna port among whole antenna ports for the full-dimension antenna; and receiving, from the terminal, channel information on all of the antenna ports on the basis of the at least one first antenna port.