公开(公告)号：US20240235732A9

公开(公告)日：2024-07-11

申请号：US18399870

申请日：2023-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiajie TONG ,  Huazi ZHANG ,  Shengchen DAI ,  Xianbin WANG ,  Rong LI ,  Jun WANG

IPC: H04L1/00 ,  H03M13/15 ,  H04W28/04

CPC classification number: H04L1/0057 ,  H03M13/15 ,  H04W28/04

Abstract: A polar code construction method and an apparatus. A communication apparatus obtains a reliability weight sequence, and determines a first threshold that indicates a weight of lowest reliability of a subchannel corresponding to an information bit. The communication apparatus determines a non-pre-frozen subchannel corresponding to a content value greater than or equal to the first threshold in the reliability weight sequence as the subchannel corresponding to the information bit based on the first threshold, and performs polar coding on the information bit based on the subchannel corresponding to the information bit.

公开(公告)号：US20230058149A1

公开(公告)日：2023-02-23

申请号：US17969736

申请日：2022-10-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huazi ZHANG ,  Jiajie TONG ,  Xianbin WANG ,  Shengchen DAI ,  Rong LI ,  Jun WANG

IPC: H03M13/11

Abstract: An encoding method and apparatus, a decoding method and apparatus, and a device are provided. The encoding method includes obtaining K to-be-encoded bits (S301), where K is a positive integer; determining a first generator matrix, where the first generator matrix includes at least two sub-blocks distributed based on a preset position relationship, and the sub-block includes a plurality of first generator matrix cores (S302); generating a second generator matrix based on the first generator matrix, where the second generator matrix includes T sub-blocks, and a position relationship between two adjacent sub-blocks of the T sub-blocks is determined based on the preset position relationship (S303), where T is a positive integer; and polar encoding the K to-be-encoded bits based on the second generator matrix (S304), to obtain encoded bits. This reduces encoding/decoding complexity.

公开(公告)号：US20200092040A1

公开(公告)日：2020-03-19

申请号：US16693906

申请日：2019-11-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lingchen HUANG ,  Shengchen DAI ,  Chen XU ,  Yunfei QIAO ,  Rong LI

IPC: H04L1/00

Abstract: This application provides a channel encoding method and apparatus in wireless communications. The method includes: performing CRC encoding on A to-be-encoded information bits, to obtain a first bit sequence, where the first bit sequence includes L CRC bits and A information bits; performing a interleaving operation on the first bit sequence, to obtain a second bit sequence, where a first interleaving sequence used for the interleaving operation is obtained based on a system-supported maximum-length interleaving sequence with the length of Kmax+L, and Kmax is a maximum information bit quantity corresponding to the maximum-length interleaving sequence ad a preset rule, and a length of the first interleaving sequence is equal to A+L. Therefore, during distributed CRC encoding, when an information bit quantity is less than the maximum information bit quantity, an interleaving sequence required for completing an interleaving process is obtained based on the system-supported maximum-length interleaving sequence.

公开(公告)号：US20200083910A1

公开(公告)日：2020-03-12

申请号：US16683594

申请日：2019-11-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengchen DAI ,  Huazi ZHANG ,  Rong LI ,  Gongzheng ZHANG ,  Lingchen HUANG

IPC: H03M13/15 ,  H03M13/00 ,  H03M13/09 ,  H03M13/19

Abstract: A data transmission method, a chip, a transceiver, and a computer readable storage medium are provided. The method includes: obtaining K information bits; determining to-be-encoded bits, where the to-be-encoded bits include (K+P) bits, the (K+P) bits include the K information bits and P check bits, the K information bits correspond to K polarization channels, the P check bits include T first-type check bits, all the T first-type check bits are PC bits, and reliability of a polarization channel corresponding to each of the T first-type check bits is greater than a minimum value of reliability of the K polarization channels; and performing polar coding on the to-be-encoded bits to obtain encoded bits, where the (K+P) bits are in a one-to-one correspondence with (K+P) rows in a generator matrix of the encoded bits, a maximum row weight corresponding to the T first-type check bits is less than or equal to W2.

公开(公告)号：US20200036474A1

公开(公告)日：2020-01-30

申请号：US16578481

申请日：2019-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hejia LUO ,  Yourui HUANGFU ,  Ying CHEN ,  Shengchen DAI ,  Rong Li

IPC: H04L1/00

Abstract: Embodiments of this application disclose a resource mapping method and an apparatus. The method includes: network device performs nested-structure mapping on a modulated symbol set to obtain a first resource block, where the modulated symbol set carries downlink control information corresponding to each of at least one user equipment, and modulated symbols of same user equipment that are carried on the first resource block are consecutive; then reconstructs, the first resource block to obtain a second resource block, where modulated symbols of same user equipment that are carried on the second resource block are non-consecutive; and maps the second resource block to a time-frequency resource, so that the user equipment obtains the modulated symbol set based on the time-frequency resource.

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.

公开(公告)号：US20240195527A1

公开(公告)日：2024-06-13

申请号：US18401019

申请日：2023-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengchen DAI ,  Jiajie TONG ,  Zhan YU ,  Kai FU ,  Rong LI ,  Jun WANG

IPC: H04L1/00

CPC classification number: H04L1/0057 ,  H04L1/0007 ,  H04L1/0041

Abstract: Methods, devices, and computer-readable storage media are disclosed. In an example method, segmentation of to-be-encoded information bits of a length N into respective quantities of different types of segments is performed. The different types of segments are among (b−a+1) types of segments that correspond to (b−a+1) different segment code lengths. The (b−a+1) types of segments comprise a minimum-length segment that has the minimum segment code length of 2{circumflex over ( )}a and a maximum-length segment that has the maximum segment code length of 2{circumflex over ( )}b. The respective quantities of the different types of segments are determined based on the length N and a code rate in an orderly manner, wherein the orderly manner comprises firstly determining a quantity of the maximum-length segments and lastly determining a quantity of the minimum-length segments. Polar code encoding is performed on the respective quantities of the different types of segments of the to-be-encoded information bits.

公开(公告)号：US20230124664A1

公开(公告)日：2023-04-20

申请号：US18067513

申请日：2022-12-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huazi ZHANG ,  Jiajie TONG ,  Gongzheng ZHANG ,  Shengchen DAI ,  Xianbin WANG ,  Rong LI ,  Jun WANG

IPC: H04L1/1812 ,  H04L1/1867

Abstract: Embodiments of this application disclose a example polar code encoding methods, example polar code decoding methods, and example apparatuses thereof. One example method in embodiments of this application includes generating an input vector, where the input vector includes T subblocks, a first information bit of a first subblock is obtained by replicating a second information bit of a second subblock, the first subblock and the second subblock arc subblocks of the T subblocks, a sequence number of the first subblock is after a sequence number of the second subblock, and T is an integer greater than or equal to 2. Polar encoding can then be performed on the input vector to obtain an encoded bit.

公开(公告)号：US20230113448A1

公开(公告)日：2023-04-13

申请号：US18065479

申请日：2022-12-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengchen DAI ,  Rong LI ,  Jiajie TONG ,  Huazi ZHANG ,  Xianbin WANG ,  Jun WANG ,  Wei HUANG ,  Yourui HUANGFU

IPC: H03M13/13 ,  H03M13/00 ,  H03M13/27

Abstract: The present disclosure relates to polar code rate matching methods, apparatuses, and mediums. One example method includes obtaining K to-be-coded bits and a mother code length N, where N=2n performing polar code encoding on the K to-be-coded bits based on the mother code length N to obtain an encoded bit sequence, performing rate matching on the polar-encoded bit sequence based on a rate matching sequence to obtain a rate matched sequence with a length of M, and outputting the rate matched sequence.

公开(公告)号：US20220158659A1

公开(公告)日：2022-05-19

申请号：US17587425

申请日：2022-01-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengchen DAI ,  Huazi ZHANG ,  Xianbin WANG ,  Lingchen HUANG ,  Rong LI ,  Yunfei QIAO

IPC: H03M13/00

Abstract: An encoding method is provided. The method includes: when a first code rate K/Nmax is less than or equal to a code rate threshold Rt, reading a second matrix from a preset code table based on a first matrix, where the first matrix includes a matrix that is read from the preset code table and that corresponds to a maximum supported code length Nmax and Rt; reading K rows and (N−K) columns starting from a preset first location in the second matrix to obtain a third matrix; adding a unit matrix with K rows and K columns to a left side of the third matrix to obtain a generator matrix of an (N, K) linear block code, where K rows and (Nmax−Nmax×Rt) columns of the first matrix in a first direction are consistent with K rows and (Nmax−Nmax×Rt) columns of the second matrix in a second direction.