公开(公告)号：US11211953B2

公开(公告)日：2021-12-28

申请号：US16634975

申请日：2018-07-27

Applicant: LG Electronics Inc.

Inventor： Bonghoe Kim ,  Jongwoong Shin ,  Ilmu Byun

IPC: H03M13/00 ,  H03M13/09 ,  H03M13/11 ,  H04L5/00

Abstract: A method by which a terminal performs rate matching for a low density parity check (LDPC) code can comprise the steps of: determining any one transport block size (TBS) among a plurality of TBSs set for rate matching in the terminal; and performing rate matching for the LDPC code on the basis of the selected TBS. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.

公开(公告)号：US11082060B2

公开(公告)日：2021-08-03

申请号：US16497474

申请日：2018-06-05

Applicant: LG Electronics Inc.

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

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

Abstract: A method for encoding a quasi-cyclic low-density parity-check (LDPC) code according to an embodiment of the present invention comprises: a step of generating a multi-edge LDPC code matrix which comprises a high rate code matrix and a single parity check code matrix; and a step of encoding a signal using the multi-edge LDPC code matrix, wherein the single parity check code matrix may be configured by connecting a first matrix which is configured as a quasi row-orthogonal structure matrix and a second matrix which is configured as a pure row-orthogonal structure.

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：US10581557B2

公开(公告)日：2020-03-03

申请号：US16263616

申请日：2019-01-31

Applicant: LG Electronics Inc.

Inventor： Seunggye Hwang ,  Kijun Kim ,  Soocheol Kyeong ,  Bonghoe Kim ,  Jinwoo Kim ,  Kwangseok Noh ,  Jongwoong Shin ,  Joonkui Ahn ,  Hyangsun You

IPC: H04L1/00 ,  H03M13/13

Abstract: A disclosure of the present specification provides a method for transmitting data by a transmitter. The method may comprise the steps of: when a transport block (TB) is divided into n data blocks, adding additional information after each of the n data blocks; and adding a cyclic redundancy check (CRC) after the last additional information. Here, the CRC may be generated on the basis of the n data blocks, and the n pieces of additional information added after each of data blocks.

公开(公告)号：US10447312B2

公开(公告)日：2019-10-15

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 ,  H03M13/25 ,  H03M13/29 ,  H03M13/00 ,  H04L27/34 ,  H03M13/09

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：US10367673B2

公开(公告)日：2019-07-30

申请号：US15599873

申请日：2017-05-19

Applicant: LG ELECTRONICS INC.

Inventor： Yonghak Suh ,  Sangchul Moon ,  Jongwoong Shin ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L1/00 ,  H04L5/00 ,  H03M13/11 ,  H03M13/27 ,  H04L27/12 ,  H04L27/26

Abstract: A method for transmitting broadcast signals, the method includes encoding service data; parity interleaving parity bits of the encoded service data; group-wise interleaving bit groups included in the parity interleaved service data according to a permutation order; block interleaving the group-wise interleaved bit groups with a set including a number of bit groups, wherein the number of bit groups included in the set corresponds to a modulation order, wherein the block interleaving includes row-wise writing bits of the group-wise interleaved bit groups in the set; and column-wise reading 1 bit from each row of the set; building at least one signal frame including the block interleaved service data; modulating data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme; and transmitting the broadcast signals having the modulated data.

公开(公告)号：US10264300B2

公开(公告)日：2019-04-16

申请号：US15696479

申请日：2017-09-06

Applicant: LG ELECTRONICS INC.

Inventor： Sangchul Moon ,  Woosuk Ko ,  Sungryong Hong ,  Jinwoo Kim ,  Jongwoong Shin

IPC: H04N21/236 ,  H04N21/2362 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/414 ,  H04N21/434 ,  H04N21/438 ,  H04N21/61 ,  H04N21/81 ,  H04L1/00

Abstract: A method for transmitting broadcast signals by an apparatus for transmitting broadcast signals, the method includes encoding service data according to a 16200 bit codeword and a 11/15 code rate based on addresses in a parity check matrix, wherein the encoded service data comprises information bits and parity bits; building at least one signal frame by mapping the encoded service data; modulating data in the built signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) scheme; and transmitting broadcast signals having the modulated data, wherein the encoding of the service data comprises: initializing the parity bits, adding the information bits to the parity bits of which addresses are based on values of entries in each row of the parity check matrix, wherein a row of the parity check matrix corresponds to a 360 bit group of the information bits.

公开(公告)号：US10158510B2

公开(公告)日：2018-12-18

申请号：US15466471

申请日：2017-03-22

Applicant: LG ELECTRONICS INC.

Inventor： Jaeho Hwang ,  Woosuk Ko ,  Sungryong Hong ,  Jongwoong Shin ,  Jinwoo Kim

IPC: H04B7/02 ,  H04L1/02 ,  H04L27/26 ,  H04B7/0413 ,  H04L5/00

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. An apparatus for transmitting broadcast signals comprises an encoder for encoding service data corresponding to each of a plurality of data transmission path, wherein each of the data transmission path carries at least one service component, a mapper for mapping the encoded service data onto constellations, an encoder for encoding physical signaling data, a frame builder for building at least one signal frame including preamble data, the encoded physical signaling data, the mapped service data, wherein the preamble data is located before the encoded physical signaling data and the encoded physical signaling data is located before the mapped service data, a modulator for modulating the at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals carrying the at least one modulated signal frame, wherein the broadcast signals includes channel information data, wherein the channel information data includes binding information between the service data and the data transmission path.

公开(公告)号：US10158452B2

公开(公告)日：2018-12-18

申请号：US15636230

申请日：2017-06-28

Applicant: LG Electronics Inc.

Inventor： Jinwoo Kim ,  Jongwoong Shin ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L1/00 ,  H04L27/26 ,  H04L12/18 ,  H04L5/00 ,  H04L29/06 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29 ,  H03M13/11 ,  H03M13/15 ,  H03M13/35

Abstract: A method is provided for transmitting broadcast signals. The method includes encoding, by an encoder, service data, encoding, by a signaling encoder, signaling data based on modes of the signaling data, wherein the signaling data is categorized into each mode representing a Low Density Parity Check (LDPC) code rate and a modulation order for the signaling data, building, by a frame builder, at least one signal frame including the encoded service data in at least one data symbol and the encoded signaling data in at least one signaling symbol, modulating, by a modulator, data in the at least one signal frame by an Orthogonal Frequency Division Multiplex (OFDM) scheme, and transmitting, by a transmitter, the broadcast signals carrying the modulated data in the at least one signal frame. One of the modes for the signaling data represents a 6/15 LDPC code rate and a Quadrature Phase Shift Keying (QPSK) modulation.