公开(公告)号：US20240031058A1

公开(公告)日：2024-01-25

申请号：US18358492

申请日：2023-07-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kangjian QIN ,  Huazi ZHANG ,  Shengchen DAI ,  Bin LI ,  Rong LI ,  Jun WANG

IPC: H04L1/00

CPC classification number: H04L1/0057 ,  H04L1/0061

Abstract: A transmit-end device obtains a first bit sequence including K information bits (401); then maps the K information bits to m sub-blocks, and performs first polar code encoding on the m sub-blocks to obtain a second bit sequence (402); and modulates the second bit sequence to obtain and send a symbol sequence (403). Correspondingly, a receive-end device obtains the symbol sequence (404), and decodes and demodulates the symbol sequence to obtain the K information bits (405). The m sub-blocks include a first sub-block, a quantity of information bits included in the first sub-block is obtained based on K and a code rate R of the first bit sequence, m may be understood as a modulation order of the first bit sequence, and a length of the second bit sequence is N.

公开(公告)号：US20240250698A1

公开(公告)日：2024-07-25

申请号：US18619914

申请日：2024-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kangjian QIN ,  Rong LI ,  Huazi ZHANG ,  Xianbin WANG ,  Jun WANG

IPC: H03M13/15 ,  H03M13/27

CPC classification number: H03M13/155 ,  H03M13/27

Abstract: This application discloses an encoding method, a decoding method, and an apparatus. The encoding method includes: obtaining a first bit sequence and a target code length M; then performing first channel encoding on the first bit sequence, to obtain a second bit sequence; performing second channel encoding based on the second bit sequence, to obtain a third bit sequence; and outputting the third bit sequence. The first bit sequence includes K information bits, the second bit sequence includes N bits, and the third bit sequence includes the N bits and E check bits, where M>N, and E=M−N. M, K, N, and E are all integers greater than or equal to 1.

公开(公告)号：US20220123862A1

公开(公告)日：2022-04-21

申请号：US17562743

申请日：2021-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhaoyang ZHANG ,  Yunmei ZHANG ,  Deng ZHENG ,  Kangjian QIN ,  Tianhang YU

IPC: H04L1/00 ,  H04L1/18

Abstract: This application discloses a polar code retransmission method and apparatus, to achieve an encoding gain. The method includes: when decoding of the first code word fails, performing polar code encoding on K first to-be-encoded bits and K′ second to-be-encoded bits based on a second information bit position set to obtain a second code word, where elements in the second information bit position set are used to indicate positions of the to-be-encoded bits, and an element that is in the second information bit position set and that is used to indicate a position of a first to-be-encoded bit is a sum of N and an element that is in the first information bit position set and that is used to indicate the position of the first to-be-encoded bit; and sending a subcode in the second code word other than the first code word to the decoding device.

公开(公告)号：US20240348368A1

公开(公告)日：2024-10-17

申请号：US18755334

申请日：2024-06-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fedor IVANOV ,  Kangjian QIN ,  Yue ZHOU ,  Rong LI ,  Jun WANG

IPC: H04L1/00

CPC classification number: H04L1/0064 ,  H04L1/0057 ,  H04L1/0061

Abstract: This application provides example concatenated code encoding and decoding methods. In one example method, polar code encoding is performed on a to-be-encoded message bit sequence based on a frozen bit set and a message bit set that are of a first polar code, to obtain a first encoded code word whose length is N_o. The first encoded code word is interleaved to obtain a second encoded code word, and optimized low-density parity-check (LDPC) code encoding is performed on the second encoded code word to obtain a concatenated code word. Interleaving includes both outer interleaving and inner interleaving. The concatenated code word is then outputted.

公开(公告)号：US20240243847A1

公开(公告)日：2024-07-18

申请号：US18619599

申请日：2024-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kangjian QIN ,  Rong LI ,  Huazi ZHANG ,  Xianbin WANG ,  Shengchen DAI ,  Jun WANG

IPC: H04L1/08 ,  H04L1/06 ,  H04L1/1607

CPC classification number: H04L1/08 ,  H04L1/0643 ,  H04L1/1642

Abstract: This application discloses a retransmission method and an apparatus. The method includes: obtaining a first bit sequence and a number E of to-be-retransmitted bits, performing second channel encoding based on the first bit sequence to obtain a second bit sequence, and performing retransmission based on the second bit sequence. The first bit sequence is obtained by performing first channel encoding based on K information bits, a length of the first bit sequence is N, N, E, and K are all integers greater than or equal to 1, and the second bit sequence includes the E to-be-retransmitted bits. According to the method, a code length can be flexibly extended based on different numbers E of to-be-retransmitted bits.