公开(公告)号：US20220352904A1

公开(公告)日：2022-11-03

申请号：US17856645

申请日：2022-07-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guido MONTORSI ,  Sergio BENEDETTO ,  Wei LIN ,  Yan XIN

IPC: H03M13/11 ,  H03M13/00

Abstract: An LDPC code encoding method and a communication apparatus are described that provide increased redundant bits through retransmission in an IR-HARQ mechanism, so as to decrease a channel coding rate, and improve decoding performance of an LDPC code. A check matrix of the LDPC code is used as a basic matrix, and the basic matrix is extended to obtain a mother matrix compatible with a plurality of code rates. During LDPC encoding, a transmit device reads, from the mother matrix, a check matrix corresponding to a required code rate, and performs LDPC encoding on an information bit sequence based on the read check matrix. LDPC encoding is performed on the information bit sequence by using check matrices of different sizes, to obtain different quantities of redundant bits.

公开(公告)号：US20230092517A1

公开(公告)日：2023-03-23

申请号：US17961709

申请日：2022-10-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guido MONTORSI ,  Sergio BENEDETTO ,  Wei LIN

IPC: H04L27/34

Abstract: A modulation method, including: modulating data by using a non-uniform constellation; and sending the modulated data. When the non-uniform constellation provided in embodiments of this application is used, for each noise standard deviation, a BER of the non-uniform constellation provided in embodiments of this application is lower than a BER of an existing QAM constellation.

公开(公告)号：US20170201906A1

公开(公告)日：2017-07-13

申请号：US15472887

申请日：2017-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Le LIU ,  Yi LUO ,  Guido MONTORSI ,  Sergio BENEDETTO

IPC: H04W28/06 ,  H04L27/26

CPC classification number: H04W28/065 ,  H04L27/2607 ,  H04L27/2613 ,  H04W84/12

Abstract: Embodiments of the present invention disclose a frame transmission method for a wireless local area network and a wireless local area network apparatus, and relate to the field of communications technologies. According to the present invention, in a frame transmission process in a WLAN, a frame sent by a wireless local area network WLAN apparatus is received, and the frame of a particular standard is recognized by detecting a user common signal field included in the frame, so that backward compatibility of a WLAN apparatus is implemented, and hybrid networking of WLAN apparatuses of different standards can be supported, thereby improving flexibility of network deployment, and reducing complexity of networking.

公开(公告)号：US20250132862A1

公开(公告)日：2025-04-24

申请号：US19005807

申请日：2024-12-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei LIN ,  Bin QIAN ,  Xun YANG ,  Guido MONTORSI ,  Sergio BENEDETTO

IPC: H04L1/00 ,  H03M13/11 ,  H04B1/7176

Abstract: This application relates to a method for determining a length of an low-density parity-check (LDPC) code word in a ultra-wideband (UWB) system and a related apparatus. The method includes a communication apparatus that determines a length of an LDPC code based on a length of a to-be-encoded information bit. When the length of the information bit ranges from 0 to 324, a 648-bit LDPC code is selected. When the length of the information bit ranges from 325 to 648 or from 973 to 1296, a 1296-bit LDPC code is selected. When the length of the information bit ranges from 649 to 972, a 1944-bit LDPC code is selected. According to embodiments of this application, higher performance gain can be achieved.

公开(公告)号：US20200220763A1

公开(公告)日：2020-07-09

申请号：US16725128

申请日：2019-12-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guido MONTORSI ,  Sergio BENEDETTO ,  Yan XIN ,  Min YAN ,  Wei LIN

IPC: H04L27/34

Abstract: Methods and apparatus for facilitating wireless communication using digital Quadrature Amplitude Modulation are disclosed. A wireless communication device utilizes a signal constellation for quadrature modulating a signal for transmission or quadrature demodulating a received signal. The signal constellation includes multiple constellation symbols and associated bit sequences, which can be translated there between. Specific signal constellations are disclosed.

公开(公告)号：US20250070800A1

公开(公告)日：2025-02-27

申请号：US18940997

申请日：2024-11-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei LIN ,  Guido MONTORSI ,  Sergio BENEDETTO ,  Xun YANG ,  Yan XIN ,  Ming GAN ,  Mengyao MA

IPC: H03M13/11

Abstract: This application discloses an LDPC encoding and decoding method and a related apparatus. This application supports 802.11 series protocols such as Wi-Fi 8, UWB. The method includes: performing low-density parity-check LDPC encoding on an information bit sequence based on a parity check matrix, to obtain a first code word, where the parity check matrix complies with a base matrix, and the base matrix meets one of the following: Each row in the first two columns of the base matrix includes at least one 1, or the first two columns of the base matrix include “1 0” and “0 1” that alternate regularly, and “1 1” is included between “1 0” and “0 1”; and sending the first code word. The parity check matrix complies with the base matrix, which can accelerate an overall decoding convergence speed of a system.

公开(公告)号：US20240204800A1

公开(公告)日：2024-06-20

申请号：US18404768

申请日：2024-01-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guido MONTORSI ,  Sergio BENEDETTO ,  Wei LIN ,  Yan XIN

IPC: H03M13/11 ,  H03M13/00

CPC classification number: H03M13/1157 ,  H03M13/1151 ,  H03M13/616

Abstract: The present disclosure relates to low-density parity-check (LDPC) encoding methods and apparatus. One example method includes obtaining k information bits to be sent to a receive end, performing LDPC encoding on the k information bits by using a submatrix of ((n−k)/Z+j) rows and (n/Z+j) columns at an upper left corner of a check matrix H based on a first transmission code rate R satisfying R=k/(n+j×Z), obtaining a first codeword including the k information bits and (n−k+j×Z) redundant bits, and sending the first codeword to the receive end.

公开(公告)号：US20230308326A1

公开(公告)日：2023-09-28

申请号：US18131855

申请日：2023-04-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yan XIN ,  Jung Hoon SUH ,  Guido MONTORSI ,  Sergio BENEDETTO ,  Osama ABOUL-MAGD ,  Wei LIN

IPC: H04L27/26 ,  H04L1/00

CPC classification number: H04L27/2601 ,  H04L1/0057

Abstract: Method and system method comprising encoding a source word to be transmitted in a data unit from a source station in a wireless network, generating a first OFDM symbol that carries a data segment corresponding to encoded bits of the source word, duplicating the first OFDM symbol to generate a second OFDM symbol that is a linear phase-rotated copy of the first OFDM symbol; and transmitting the data unit including the first OFDM symbol and the second OFDM symbol.

公开(公告)号：US20230208555A1

公开(公告)日：2023-06-29

申请号：US18170854

申请日：2023-02-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guido MONTORSI ,  Sergio BENEDETTO ,  Yan XIN ,  Wei LIN

IPC: H04L1/00 ,  H03M13/25 ,  H03M13/27

CPC classification number: H04L1/0057 ,  H03M13/255 ,  H03M13/271

Abstract: Method and system method performed at a wireless transmitting station, including generating a first low density parity check (LPDC) codeword for a first source word for a first transmission, and generating a second LDPC codeword for a retransmission for the first LDPC codeword, the second LDPC codeword including a permutated subset of information bits included in the first LDPC codeword and parity check bits corresponding to the permutated subset of information bits.

公开(公告)号：US20220337272A1

公开(公告)日：2022-10-20

申请号：US17856773

申请日：2022-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guido MONTORSI ,  Sergio BENEDETTO ,  Wei LIN ,  Yan XIN ,  Ming GAN

IPC: H03M13/00 ,  H03M13/23 ,  H04L1/00

Abstract: A convolutional code rate matching method and a communication apparatus are provided. A puncturing pattern of a second codeword at a second code rate is obtained based on a puncturing pattern of a first codeword at a first code rate. A second puncturing location set of the second codeword is a subset of a first puncturing location set of the first codeword. When a transmit device decreases a code rate from the first code rate to the second code rate, a redundant bit is sent at a location of a complementary set of the second puncturing location set relative to the first puncturing location set. Compared with the first puncturing location set, the second puncturing location set may obtain more incremental redundant bits, to decrease a channel encoding rate. This can improve decoding performance of a convolutional code.