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    Polar code transmission method and apparatus
    2.
    发明授权
    Polar code transmission method and apparatus 有权

    公开(公告)号：US11057150B2

    公开(公告)日：2021-07-06

    申请号：US16544529

    申请日：2019-08-19

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Hejia Luo ,  Shengchen Dai ,  Ying Chen ,  Gongzheng Zhang ,  Rong Li ,  Chaolong Zhang

    IPC: H04B7/216 ,  H04L1/00 ,  H04L27/26 ,  H04L29/08 ,  H04W72/00 ,  H04W72/04

    Abstract: This application discloses a transmission method, a transmission apparatus, and a communications device. The transmission method includes: performing polar encoding on a bit sequence, to obtain an encoded sequence, where the bit sequence includes control information and a cyclic redundancy check CRC sequence; fragmenting the encoded sequence, to obtain n encoded subsequences, where n is an integer, and n>0; and scrambling the n encoded subsequences by using n scrambling sequences respectively, to obtain n scrambled sequences. In the transmission method, the n scrambling sequences are newly defined based on encoding and decoding features of a polar code, and the n scrambling sequences additionally carry ┌log2n┐-bit information. According to the foregoing encoding method, signaling overheads are reduced.

    Encoding method, decoding method, encoding apparatus, and decoding apparatus
    3.
    发明授权
    Encoding method, decoding method, encoding apparatus, and decoding apparatus 有权

    公开(公告)号：US10972130B2

    公开(公告)日：2021-04-06

    申请号：US16521605

    申请日：2019-07-25

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Chaolong Zhang ,  Lingchen Huang ,  Hejia Luo ,  Rong Li ,  Jun Wang

    IPC: H03M13/11 ,  H04L1/00

    Abstract: An encoding method, an encoding apparatus, a decoding method, and a decoding apparatus are provided. The encoding method includes: determining a size of a shift matrix based on a length of an information sequence and a length of an identifier sequence; constructing a check matrix based on the size of the shift matrix and a base matrix; and performing low-density parity-check LDPC encoding on the information sequence and the identifier sequence based on the check matrix. The identifier sequence is a non-all-zero sequence. Because the encoded codeword includes information of the identifier sequence, a receive device can identify whether information corresponding to the encoded codeword is addressed to the receive device, thereby improving information processing efficiency in the transmission.

    Rate matching method and apparatus for polar code
    10.
    发明授权
    Rate matching method and apparatus for polar code 有权

    公开(公告)号：US10784900B2

    公开(公告)日：2020-09-22

    申请号：US16272937

    申请日：2019-02-11

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Gongzheng Zhang ,  Ying Chen ,  Rong Li ,  Chaolong Zhang ,  Yourui Huangfu ,  Huazi Zhang

    IPC: H03M13/00 ,  H03M13/13 ,  H03M13/29

    Abstract: A rate matching method for a polar code is provided, to improve performance. The method includes: encoding, based on an N*N encoding matrix of a polar code, a sequence including N first bits, to generate a mother code including N second bits, where the N first bits are in a one-to-one correspondence with N rows in the encoding matrix in sequence, and the N second bits are in a one-to-one correspondence with N columns in the encoding matrix in sequence; determining N−M to-be-punctured second bits from the N second bits, where at least one first bit in N−M first bits participating in encoding of the N−M second bits belongs to the first M first bits in the N first bits, and the N−M first bits are fixed bits; and puncturing the N−M second bits, to obtain a target polar code including M second bits.

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