公开(公告)号：US11039481B2

公开(公告)日：2021-06-15

申请号：US16593632

申请日：2019-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Suckchel Yang ,  Joonkui Ahn ,  Yunjung Yi ,  Hyangsun You ,  Bonghoe Kim

IPC: H04W74/08 ,  H04W4/70 ,  H04W72/04 ,  H04W72/12 ,  H04W88/02

Abstract: A method for performing a random access procedure in a wireless communication system supporting coverage enhancement, the method including performed by a user equipment (UE), determining a coverage enhancement level required for the UE; repeatedly transmitting a physical random access channel (PRACH) signal based on the determined coverage enhancement level; and monitoring a physical downlink control channel (PDCCH) candidates for a random access response (RAR) in response to the PRACH signal, wherein the PDCCH candidates for the RAR are determined based on the coverage enhancement level required for the UE.

公开(公告)号：US10945228B2

公开(公告)日：2021-03-09

申请号：US16151799

申请日：2018-10-04

Applicant: LG Electronics Inc.

Inventor： Dongyoun Seo ,  Joonkui Ahn ,  Yunjung Yi ,  Bonghoe Kim ,  Daesung Hwang

IPC: H04W56/00 ,  H04L5/14 ,  H04W72/04

Abstract: Provided is a method for determining an uplink transmission timing of a terminal having a plurality of cells configured therein, and a terminal using the method in a wireless communication system. The method comprises receiving timing advance (TA) configuration information, and determining an uplink transmission timing for each of the two cells on the basis of the TA configuration information, wherein the plurality of cells comprise a first cell using a frequency division duplex (FDD) frame structure and a second cell using a time division duplex (TDD) frame structure.

公开(公告)号：US10931398B2

公开(公告)日：2021-02-23

申请号：US16467028

申请日：2017-12-06

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/00 ,  H04L1/00 ,  H04L5/00 ,  H04W72/12

Abstract: Provided are a method and a device for transmitting control information by using a polar code. The device generates a codeword by encoding information bits indicating control information by using the polar code, and transmits the whole or a part of the codeword through a control channel A block size of the polar code is determined according to a reference coding rate for the control channel.

公开(公告)号：US10904901B2

公开(公告)日：2021-01-26

申请号：US16698453

申请日：2019-11-27

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe Kim ,  Kijun Kim ,  Yunjung Yi

IPC: H04W72/12 ,  H04W28/02 ,  H04W40/12 ,  H04W76/15 ,  H04W4/70 ,  H04B7/06 ,  H04L1/06 ,  H04L5/00 ,  H04L1/08 ,  H04L1/00

Abstract: A method of reporting channel state information (CSI) at a machine type communication (MTC) user equipment (UE) in a wireless communication system, includes selecting a set of M downlink subframes as a CSI reference resource and a subband among a set of N subbands; measuring a wideband channel quality indicator (CQI) for the set of N subbands and a subband CQI for the subband through the CSI reference resource; and transmitting, to a base station, the wideband CQI and the subband CQI through an uplink subframe, wherein the MTC UE measures the wideband CQI and the subband CQI based on a cell-specific reference signal (CRS) received through the M downlink subframes which are located before the uplink subframe, and wherein the set of N subbands is configured to perform frequency hopping.

公开(公告)号：US10887883B2

公开(公告)日：2021-01-05

申请号：US16563373

申请日：2019-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Dongyoun Seo ,  Bonghoe Kim ,  Joonkui Ahn ,  Suckchel Yang ,  Hanbyul Seo ,  Seungmin Lee ,  Yunjung Yi

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04W76/10 ,  H04J3/16

Abstract: The present invention relates to a method and apparatus for aggregating carriers in wireless communication systems. In the method, a first carrier is set up, and a second carrier is added in addition to the first carrier. In addition, the first carrier is a time division duplex (TDD) carrier for which an uplink subframe and a downlink subframe are positioned at different times in a frame, and the second carrier is a carrier only for a downlink that consists of downlink subframes.

公开(公告)号：US10834709B2

公开(公告)日：2020-11-10

申请号：US16065601

申请日：2017-03-03

Applicant: LG Electronics Inc.

Inventor： Suckchel Yang ,  Joonkui Ahn ,  Kijun Kim ,  Eunsun Kim ,  Hyungtae Kim ,  Seonwook Kim ,  Bonghoe Kim ,  Byounghoon Kim ,  Hanbyul Seo

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

Abstract: The present invention relates to a wireless communication system, and particularly, to a method and an apparatus for same, the method comprising the steps of: generating a UCI; mapping the UCI on an L number of uplink control channel units; and transmitting the mapped UCI, wherein each of the uplink control channel units comprises an Nc number of REs in a single OFDMA symbol, and the plurality of REs include an Nr number of RS transmission REs and an Nd number of UCI transmission REs, wherein Nc is the sum of Nr and Nd, and wherein L is an integer greater than or equal to one and is variable.

公开(公告)号：US10819372B2

公开(公告)日：2020-10-27

申请号：US16347508

申请日：2017-11-03

Applicant: LG Electronics Inc.

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

IPC: H03M13/15 ,  H03M13/11

Abstract: Disclosed are a method for dividing a transport block of a low density parity check (LDPC) code and an apparatus therefor. A method for dividing a transport block of an LDPC code according to the present disclosure can improve the performance of the LDPC code by dividing the transport block using a minimum number of code blocks. In addition, it is possible to minimize shortening bits by making the size of some of the code blocks smaller than the size of the other code blocks. Further, it is possible to prevent performance degradation due to a minimum size code block by minimizing the number of the code blocks and performing shortening on a large size code block.

公开(公告)号：US10804933B2

公开(公告)日：2020-10-13

申请号：US16337193

申请日：2017-05-26

Applicant: LG Electronics Inc.

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

IPC: H03M13/00 ,  H03M13/11 ,  H04L1/00 ,  H04L1/16 ,  H04W76/28 ,  H04W88/02

Abstract: A quasi-cyclic low density parity check (QC LDPC) code rate matching method is disclosed. According to the rate matching method in the present disclosure, the minimum lifting value can be selected from among lifting values by which a codeword longer than a target code block can be generated. A coding gain through retransmission can be acquired by generating the codeword that is longer than the target code block. In addition, by selecting a lifting value of a proper magnitude, rate matching for information bit sequences of various lengths can be performed.

公开(公告)号：US10756862B2

公开(公告)日：2020-08-25

申请号：US15564484

申请日：2016-04-08

Applicant: LG Electronics Inc.

Inventor： Bonghoe Kim ,  Yunjung Yi

IPC: H04L5/00 ,  H04L1/18 ,  H04L29/08 ,  H04W4/70 ,  H04W72/04 ,  H04W72/12

Abstract: The present invention provides methods for controlling transmission of a sounding reference signal (SRS) in a wireless access system supporting machine type communication (MTC) and devices for supporting same. A method for controlling transmission of an SRS by an MTC terminal in a wireless access system supporting MTC, according to an embodiment of the present invention, can comprise the steps of: receiving an upper layer signal comprising information about an SRS which is to be repeatedly transmitted; configuring the SRS on the basis of the information about the SRS; and transmitting the SRS by means of a subband to which a physical uplink shared channel (PUSCH) is allocated and which is being frequency hopped. The subband comprises six physical resource blocks (PRB), and the SRS can be sequentially transmitted to the subband being frequency hopped.

公开(公告)号：US10693539B2

公开(公告)日：2020-06-23

申请号：US16264074

申请日：2019-01-31

Applicant: LG ELECTRONICS INC.

Inventor： Dongwook Roh ,  Bonghoe Kim ,  Youngwoo Yun ,  Dongyoun Seo ,  Joonkui Ahn ,  Kijun Kim

IPC: H04B7/0456 ,  H04L1/00 ,  H04L1/06 ,  H04L1/18 ,  H04L5/00 ,  H04L25/02 ,  H04L1/08 ,  H04L25/03 ,  H04B7/06 ,  H04B7/10

Abstract: A method for indicating a combination between a codeword and a layer in a MIMO communication, system, a layer mapping method, and a data transmission method using the same are disclosed. A minimum number of codeword-layer mapping combinations from among all available combinations based on the' numbers of all codewords and all layers are pre-defined in consideration of a ratio of a codeword to a layer, a reception performance of a receiver, and reduction of combinations, so that a data transmission method using the predefined combinations is implemented. If a. specific one codeword is mapped to at least two layers, a diversity gain can be acquired.