公开(公告)号：US11050510B2

公开(公告)日：2021-06-29

申请号：US16423172

申请日：2019-05-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hejia Luo ,  Gongzheng Zhang ,  Rong Li ,  Huazi Zhang ,  Yourui Huangfu ,  Jian Wang ,  Ying Chen ,  Jun Wang

IPC: H04L1/00 ,  H03M13/13 ,  H04L29/08 ,  H04L1/08 ,  H03M13/00 ,  H03M13/09

Abstract: Embodiments provide a Polar code transmission method and apparatus. A bit sequence is encoded into a code sequence using Polar code by a network device. The bit sequence contains a control signaling and a Cyclic Redundancy Code (CRC) sequence. The code sequence is transformed into M copies such that an ith information copy of the M copies multiples by a first matrix of the power of (i−1). M is an integer and M>0. M copies of codeword was encoded by Polar code, the M copies implicitly conveys different time stamp information, which is suitable for the transmission of PBCH in 5G communication system, signaling overhead is also reduced.

公开(公告)号：US11005504B2

公开(公告)日：2021-05-11

申请号：US16665294

申请日：2019-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ying Chen ,  Gongzheng Zhang ,  Huazi Zhang ,  Yue Zhou ,  Yunfei Qiao ,  Hejia Luo ,  Rong Li ,  Jun Wang

IPC: H03M13/00 ,  H03M13/13

Abstract: The embodiments of the application provides a polar code rate matching method and apparatus. The method includes: obtaining, by a communications device, to-be-encoded information; determining, by the communications device, a to-be-used rate matching manner based on the code rate, a code rate threshold, a target code length, and a target code length threshold, where the rate matching manner is a puncturing manner or a shortening manner; and rate matching, by the communications device based on the determined rate matching manner, a polar code of the to-be-encoded information.

公开(公告)号：US10999005B2

公开(公告)日：2021-05-04

申请号：US16879769

申请日：2020-05-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04L1/00 ,  H04L29/08 ,  H04W72/12

Abstract: Embodiments of the application provide a method and device for polar code rate matching in a wireless communication network. A device of the network obtains K information bits. The device generates a to-be-encoded sequence having a length N bits. The to-be-encoded sequence includes the K information bits and L frozen bits. The L frozen bits are placed in L bit positions of the to-be-encoded sequence. The L bit positions are determined according to a rate match manner which is either puncturing or shortening. The device polar encodes the to-be-encoded sequence to obtain the encoded sequence. The device interleaves the encoded sequence to obtain an interleaved sequence and then stores the interleaved sequence into a cyclic cache. The device sequentially outputs M bits of the interleaved sequence from the cyclic cache according to the rate matching manner.

公开(公告)号：US10958377B2

公开(公告)日：2021-03-23

申请号：US16520530

申请日：2019-07-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yue Zhou ,  Yinggang Du ,  Rong Li

IPC: H03M13/00 ,  H04L1/00 ,  H03M13/09 ,  H03M13/13 ,  H03M13/29

Abstract: Embodiments of this application provide an encoding and decoding method and device in wireless communications between network devices and user equipment. The encoding method includes: obtaining, by a transmit end, a post-polar-encoding data length corresponding to to-be-encoded data; segmenting, by the transmit end, the to-be-encoded data into at least one code block based on the post-encoding data length and a preset threshold; and performing, by the transmit end, polar encoding on each code block, and transmitting encoded data to a receive end. The embodiments of this application avoid a data transmission performance loss caused by an excessive quantity of segments.

公开(公告)号：US10958374B2

公开(公告)日：2021-03-23

申请号：US16822712

申请日：2020-03-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jian Wang ,  Lingchen Huang ,  Yunfei Qiao ,  Rong Li

IPC: H04L27/00 ,  H04L1/00

Abstract: Example Polar code rate matching methods and apparatus are described. One example method includes determining a first index set corresponding to N to-be-encoded bits. The first index set includes indexes of Z polarized channels on which forced frozen bits are placed. The Z polarized channels are a subset of N polarized channels corresponding to the N to-be-encoded bits, N=2n, Z

公开(公告)号：US10938506B2

公开(公告)日：2021-03-02

申请号：US16885244

申请日：2020-05-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Gongzheng Zhang ,  Hejia Luo ,  Rong Li ,  Ying Chen ,  Yunfei Qiao

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

Abstract: Embodiments of the application provide a method for rate matching in a wireless communication network. A device obtains K information bits and a target code length M of a polar code, determines, according to a minimum value of a set of values, a mother code length N1, polar encodes the K information bits to obtain an encoded sequence of N1 bits, obtains a target sequence of M bits from the N1 bit encoded sequence, and outputs the M-bit target sequence. When the mother code length N1 is larger than the target code length M, (N1−M) bits of the encoded sequence are punctured or shortened from the N1 bit encoded sequence.

公开(公告)号：US20200351015A1

公开(公告)日：2020-11-05

申请号：US16879769

申请日：2020-05-21

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

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

IPC: H04L1/00 ,  H04L29/08 ,  H04W72/12

Abstract: Embodiments of the application provide a method and device for polar code rate matching in a wireless communication network. A device of the network obtains K information bits. The device generates a to-be-encoded sequence having a length N bits. The to-be-encoded sequence includes the K information bits and L frozen bits. The L frozen bits are placed in L bit positions of the to-be-encoded sequence. The L bit positions are determined according to a rate match manner which is either puncturing or shortening. The device polar encodes the to-be-encoded sequence to obtain the encoded sequence. The device interleaves the encoded sequence to obtain an interleaved sequence and then stores the interleaved sequence into a cyclic cache. The device sequentially outputs M bits of the interleaved sequence from the cyclic cache according to the rate matching manner.

公开(公告)号：US10826532B2

公开(公告)日：2020-11-03

申请号：US16383322

申请日：2019-04-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladimir Gritsenko ,  Aleksei Eduardovich Maevskii ,  Hejia Luo ,  Jian Wang ,  Rong Li

IPC: H03M13/00 ,  H03M13/13 ,  H04L1/00 ,  H03M13/37 ,  H04L1/18

Abstract: A method to explicitly indicate the version information while still supporting soft combining is disclosed. A polar code encoder maps q bits to q positions of q sub-channels, q is a positive integer; wherein the q bits are used to indicate a version of encoded codeword; map 1 to a special frozen bit corresponding to the q bits; map K−q information bits to K−q positions for the K−q information bits, K is an integer, K>q; and perform polar encoding over an input vector u0N-1, comprising the q bits, the special frozen bit and the K−q information bits, with the length of N, N is an integer, N>=K. With this method, there is no need to make blind detection to achieve the version information of transmitted payload, which reduces power consumption for a receiver.

公开(公告)号：US20200322086A1

公开(公告)日：2020-10-08

申请号：US16817626

申请日：2020-03-13

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

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

IPC: 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. 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.

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.