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    Method for encoding information bit sequence in communication network
    42.
    发明授权
    Method for encoding information bit sequence in communication network 有权

    公开(公告)号：US10608788B2

    公开(公告)日：2020-03-31

    申请号：US16249910

    申请日：2019-01-17

    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

    Inventor： Chen Xu ,  Rong Li ,  Gongzheng Zhang ,  Yue Zhou ,  Lingchen Huang ,  Yunfei Qiao ,  Carmela Cozzo ,  Yiqun Ge

    IPC: H04L1/00 ,  H03M13/13

    Abstract: Embodiments of this application provide a method for encoding data in a wireless communication network. A communication device obtains an information bit sequence of a bit length K and a code length M. When M is greater than or equal to a first threshold and K is greater than or equal to a second threshold, the device divides the information bit sequence into p subsequences that are of an equal length K1. Then the device encodes each of the p subsequence to obtain p encoded subsequences. The device rate-matches each of the p encoded subsequences to obtain p rate matched subsequences, concatenates the p rate matched subsequences to obtain the output sequence of the code length M, then outputs the output sequence.

    Method and coding apparatus for processing information using a polar code
    43.
    发明授权
    Method and coding apparatus for processing information using a polar code 有权

    公开(公告)号：US10594436B2

    公开(公告)日：2020-03-17

    申请号：US16579867

    申请日：2019-09-24

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Chen Xu ,  Rong Li ,  Gongzheng Zhang ,  Yue Zhou ,  Lingchen Huang

    IPC: H04W4/00 ,  H04L1/00

    Abstract: Embodiments of this application provide an information processing method and a coding apparatus. An information bit sequence includes a K-bit information block. The information bit sequence is to be processed into an encoded bit sequence with a target code length M, M>1024. For a given code rate R, when the length K of the information block is greater than a preset threshold, the information bit sequence is segmented into two or more segments. Each segment is polar encoded into an encoded subsequence. The encoded subsequence has a length that equals to a mother code length Ni, and i=1, 2, . . . , p. Each of the p encoded subsequences is rate matched to obtain a rate-matched encoded subsequence. A rate-matched encoded subsequence i of the p rate-matched encoded subsequences has a code length Mi. The p rate-matched encoded subsequences are concatenated into an encoded bit sequence which has a code length M.

    Encoding Method and Apparatus
    44.
    发明申请
    Encoding Method and Apparatus 审中-公开

    公开(公告)号：US20200067534A1

    公开(公告)日：2020-02-27

    申请号：US16673118

    申请日：2019-11-04

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Lingchen Huang ,  Huazi Zhang ,  Rong Li ,  Gongzheng Zhang ,  Chen Xu

    IPC: H03M13/27 ,  H03M13/11 ,  H04L1/00 ,  H03M13/15 ,  H03M13/09

    Abstract: An encoding method and apparatus are provided. The method by a transmit end includes: performing check encoding on to-be-encoded information to obtain a check encoding codeword that comprises K information bits and J check bits; performing an interleaving operation on the check encoding codeword with an interleaving sequence including J subsequences, and an ith subsequence includes a position index of an element 1 in an intermediate result vector Ti and a value of (K+i), where 1≤i≤J, i is an integer, Ti=(˜M)&(Vi), M=M|(Vi), M is a masked vector, Vi is a column vector of a checking part matrix P, P is a submatrix of a generator matrix G for check encoding, ˜ represents a bit-by-bit NOT operation, & represents a bit-by-bit AND operation, and | represents a bit-by-bit OR operation; and performing polar encoding on a check encoding codeword obtained after the interleaving operation.

    COMMUNCIATION METHOD USING POLAR CODE, AND WIRELESS DEVICE
    46.
    发明申请
    COMMUNCIATION METHOD USING POLAR CODE, AND WIRELESS DEVICE 审中-公开

    公开(公告)号：US20190260392A1

    公开(公告)日：2019-08-22

    申请号：US16391327

    申请日：2019-04-23

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Huazi Zhang ,  Rong Li ,  Gongzheng Zhang ,  Chen Xu

    IPC: H03M13/13 ,  H04L1/00 ,  H04L25/02

    Abstract: Embodiments of the application provide a polar coding method for communicating information in a wireless network. Information bits are encoded using a polar code process to obtain a polar-coded bit sequence. A rate matched bit sequence is output based on the polar-coded bit sequence. The rate matched bit sequence includes a quantity M of bits from the polar-coded bit sequence, and the M bits from the polar-coded bit sequence correspond to M channel indexes in a channel index sequence S. The channel index sequence S is obtained based on a puncturing/shortening proportion P′ and a prestored channel index sequence S′. Channel indexes in the prestored channel index sequence S′ are sorted by channel reliability or channel capacity, and a sorting order of the M channel indexes in the channel index sequence S is the same as a sorting order of the channel indexes in the prestored channel index sequence S′.

    POLAR CODE RETRANSMISSION METHOD AND APPARATUS
    47.
    发明申请
    POLAR CODE RETRANSMISSION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20190207720A1

    公开(公告)日：2019-07-04

    申请号：US16298901

    申请日：2019-03-11

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Rong Li ,  Guijie Wang ,  Gongzheng Zhang ,  Jian Wang ,  Jun Wang

    IPC: H04L1/18 ,  H04L1/00 ,  H03M13/13

    CPC classification number: H04L1/1825 ,  H03M13/13 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/1819 ,  H04L1/1867

    Abstract: Embodiments of this application provide a polar code retransmission method and apparatus, to reduce retransmission complexity and improve transmission performance. The method includes: determining a first polar channel sequence including N polar channels and reliability of each of the N polar channels; determining, based on a coding parameter for an mth data transmission, a quantity Km of information bits that need to be transmitted during the mth data transmission, where the coding parameter includes at least one of the quantity of information bits and a code rate; determining Km polar channels with highest reliability in the first polar channel sequence; determining Km information bits based on locations, of information bits that need to be transmitted during first m−1 data transmissions, in the first polar channel sequence; and mapping the Km information bits to the Km polar channels for transmission.

    Method and Device for Parallel Polar Code Encoding/Decoding
    49.
    发明申请
    Method and Device for Parallel Polar Code Encoding/Decoding 审中-公开

    公开(公告)号：US20180097580A1

    公开(公告)日：2018-04-05

    申请号：US15717745

    申请日：2017-09-27

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Huazi Zhang ,  Gongzheng Zhang ,  Rong Li ,  Jun Wang ,  Wen Tong ,  Yiqun Ge

    IPC: H04L1/00

    Abstract: Embodiments of this disclosure enhance the error detection performance of parallel polar encoding by cross-concatenating parity bits between segments of information bits transmitted over different sets of sub-channels. In one embodiment, a first segment of information bits is transmitted over a first set of sub-channels, and at least a second segment of information bits, and a masked parity bit, are transmitted over a second set of sub-channels. A value of the masked parity bit is equal to a bitwise combination of a first parity bit computed from the first segment of information bits and a second parity bit computed from the second segment of information bits. The bitwise combination may be a bitwise AND, a bitwise OR, or a bitwise XOR of the respective parity bits.

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