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：US20230336273A1

公开(公告)日：2023-10-19

申请号：US18212345

申请日：2023-06-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin LI ,  Jiaqi GU ,  Huazi ZHANG ,  Wen TONG

IPC: H04L1/00 ,  H04L1/1812 ,  H04L1/1822

CPC classification number: H04L1/0071 ,  H04L1/1812 ,  H04L1/1822

Abstract: This application discloses a communication method includes: obtaining a plurality of information bits in first transmission; grouping the plurality of information bits into m groups of first information bit sequences K1, . . . , Km; encoding the m groups of first information bit sequences to obtain a first target encoded codeword; sending the first target encoded codeword to a receive end; performing interleaving processing on n groups of first information bit sequences in the m groups of first information bit sequences in tth retransmission if the first transmission fails, to obtain m groups of first bit sequences X1, . . . , Xm; encoding the m groups of first bit sequences to obtain a second target encoded codeword; and sending the second target encoded codeword to the receive end. In this way, in a HARQ-based implementation, interleaving processing is performed on some information bit sequences in a retransmission process.

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.

公开(公告)号：US20200343916A1

公开(公告)日：2020-10-29

申请号：US16923898

申请日：2020-07-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiajie TONG ,  Huazi ZHANG ,  Yunfei QIAO ,  Rong LI ,  Xiaocheng LIU ,  Jun WANG

IPC: H03M13/45 ,  H03M13/09

Abstract: A decoding method and apparatus are provided, to improve a degree of parallelism in decoded bit decisions and reduce a decoding delay. The method includes: performing a hard decision on each LLR in an inputted LLR vector having a length of M to obtain a first vector, where M≤N and N is a length of to-be-decoded information; sequentially performing negation of some elements of the first vector to obtain L vectors; and then determining decoding results of the LLR vector based on the L vectors.

公开(公告)号：US20200169352A1

公开(公告)日：2020-05-28

申请号：US16778812

申请日：2020-01-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yue ZHOU ,  Jun WANG ,  Rong LI ,  Ying CHEN ,  Jian WANG ,  Huazi ZHANG

IPC: H04L1/00

Abstract: This application relates to the field of communications technologies, and discloses a polar code encoding method and apparatus, to improve accuracy of reliability computation and sorting of polar channels. The method is: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polar channels, and the sequence numbers of the N polar channels are arranged in the first sequence based on corresponding reliabilities of the N polar channels, where K is a positive integer, N is a mother code length of a polar code, N is a positive integer that is a power of 2, and K≤N; selecting sequence numbers of K polar channels from the first sequence in descending order of the reliabilities; and placing the to-be-encoded bits based on the selected sequence numbers of the K polar channels, and performing polar code encoding on the to-be-encoded bits.

公开(公告)号：US20200067638A1

公开(公告)日：2020-02-27

申请号：US16672309

申请日：2019-11-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yue ZHOU ,  Rong LI ,  Yinggang DU ,  Huazi ZHANG ,  Pengcheng QIU ,  Yunfei QIAO ,  Jun WANG

IPC: H04L1/00

Abstract: Embodiments of the present invention disclose an encoding method. The method includes: obtaining a corresponding index value from an index module based on values in Z to-be-encoded bits that are obtained and a state space value in a state space module, performing an operation based on the index value and the state space value to obtain a new state space value, encoding the Z to-be-encoded bits that are obtained, and obtaining a value from the new state space value and assigning the value to an auxiliary bit.

公开(公告)号：US20200059934A1

公开(公告)日：2020-02-20

申请号：US16664135

申请日：2019-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huazi ZHANG ,  Yunfei QIAO ,  Rong LI

IPC: H04W72/04 ,  H04W76/11 ,  H03M13/00 ,  H03M13/13 ,  H03M13/09

Abstract: The present disclosure relates to coding/decoding methods, apparatus, and devices. One example method includes obtaining, by a sending device, positions of information bits, positions of fixed bits, and positions of assistant bits, allocating the information bits, the fixed bits, and the assistant bits in a to-be-coded sequence based on the obtained positions, obtaining a scrambling sequence, obtaining a scrambling sequence, scrambling a bit in a to-be-scrambled bit set based on the scrambling sequence to obtain a scrambled sequence, and performing polar coding to obtain a coded sequence for sending.

公开(公告)号：US20200028614A1

公开(公告)日：2020-01-23

申请号：US16586385

申请日：2019-09-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： SHENGCHEN DAI ,  Huazi ZHANG ,  Rong LI ,  Yunfei QIAO ,  Yue ZHOU

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

Abstract: Embodiments of this application provide a method for processing information bits. A communication device obtains K information bits and a code length M. The code length M is a length of an output sequence resulting from processing the information bits. The communication device generates an N-bit bit sequence that includes the K information bits and one or more parity check bits, encodes the bit sequence using a polar encoding formula to obtain an N-bit encoded sequence, rate matches the encoded sequence to obtain the output sequence, modulates the rate matched sequence to obtain output sequence and outputs the output sequence. When M−K>192, in the bit sequence, one of the parity check bits is placed in a bit position that is determined according to reliabilities of the bit positions in the bit sequence for placing the K information bits and the one or more parity check bits.