公开(公告)号：US20170201944A1

公开(公告)日：2017-07-13

申请号：US15471768

申请日：2017-03-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei LIN ,  Le LIU ,  Jun ZHU ,  Weishan LU

IPC: H04W52/02 ,  H04L5/00

CPC classification number: H04W52/0229 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2613 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146

Abstract: The disclosure discloses a high-efficiency short training field sequence generation method, a signal sending method, a signal receiving method, and related apparatuses, where the high-efficiency short training sequence generation method includes: increasing frequency domain density of a frequency domain sequence corresponding to a first high-efficiency short training field sequence to generate a frequency domain sequence with increased frequency domain density; generating a second high-efficiency short training field sequence according to the frequency domain sequence with increased frequency domain density; and using the second high-efficiency short training field sequence as a high-efficiency short training field sequence in a preamble sequence of a data transmission frame in a wireless local area network WLAN. In embodiments of the disclosure, a cycle of a high-efficiency short training field sequence used for performing stage-2 AGC adjustment in the WLAN may be increased, and a maximum CSD value that can be used is further increased.

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：US20240405786A1

公开(公告)日：2024-12-05

申请号：US18806832

申请日：2024-08-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiaqi GU ,  Mengyao MA ,  Jiahui LI ,  Zihan TANG ,  Wei LIN ,  Yinggang DU

IPC: H03M13/13 ,  H03M7/32

Abstract: This application provides an encoding method and an encoding apparatus based on a polar code, to improve compression performance of a source sequence of a limited length. The method includes: obtaining a source bit sequence; encoding the source bit sequence by using a polar code generation matrix that is based on sub-block column transformation, to obtain a first bit sequence, where the polar code generation matrix that is based on the sub-block column transformation is determined based on a first polar code generation matrix and a transformation matrix, and the transformation matrix may achieve effect of performing sub-block column transformation on the first polar code generation matrix; and compressing the first bit sequence, to obtain a compressed bit sequence.

公开(公告)号：US20240283465A1

公开(公告)日：2024-08-22

申请号：US18649379

申请日：2024-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiahui LI ,  Mengyao MA ,  Jiaqi GU ,  Zihan TANG ,  Wei LIN ,  Huazi ZHANG ,  Xun YANG

IPC: H03M13/13 ,  H03M13/00 ,  H03M13/09 ,  H04J13/00

CPC classification number: H03M13/13 ,  H03M13/09 ,  H03M13/616 ,  H04J13/0029

Abstract: This application provides a coding method, a decoding method, and a communications apparatus. The coding method includes: obtaining a first information bit sequence; determining a first frozen bit sequence based on a probability distribution value P1 of the first information bit sequence; determining a check bit sequence based on a second information bit sequence, where the second information bit sequence is the first information bit sequence or a sequence obtained after a pre-transformation operation is performed on the first information bit sequence; obtaining a first bit sequence based on the second information bit sequence, the check bit sequence, and the first frozen bit sequence, where the first bit sequence includes bits in the second information bit sequence.

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：US20230041746A1

公开(公告)日：2023-02-09

申请号：US17850647

申请日：2022-06-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Meilu LIN ,  Sheng LIU ,  Wei LIN ,  Jian YU ,  Le LIU ,  Xun YANG ,  Shimon SHILO ,  Doron EZRI ,  Genadiy TSODIK ,  Oded REDLICH

IPC: H04L27/26 ,  H04L5/00 ,  H04L69/323

Abstract: Embodiments of the present invention provide a physical layer protocol data unit PPDU transmission method and a corresponding PPDU transmission apparatus. Application of the method and apparatus in the embodiments of the present invention enables a receive end to quickly determine the starting position of the feature signal sequence by means of blind detection, and ensures that the receive end quickly completes data processing and status switching.

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.

公开(公告)号：US20220255564A1

公开(公告)日：2022-08-11

申请号：US17732776

申请日：2022-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H03M13/11 ,  H03M13/00

Abstract: The present disclosure relates to low-density parity-check (LDPC) encoding methods and apparatus. One example method includes encoding 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 a receive end.