公开(公告)号：US20190215099A1

公开(公告)日：2019-07-11

申请号：US16354194

申请日：2019-03-15

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Shengchen Dai ,  Huazi Zhang ,  Rong Li ,  Yunfei Qiao ,  Yue Zhou

IPC: H04L1/00

CPC classification number: H04L1/0041 ,  H03M13/13 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/0068

Abstract: Embodiments of this application provide a method for processing information bits in a wireless communication network. 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, 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.

公开(公告)号：US20250086436A1

公开(公告)日：2025-03-13

申请号：US18956902

申请日：2024-11-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shengchen Dai ,  Wei Teng ,  Jian Wang ,  Rong Li ,  Jun Wang

IPC: G06N3/0455 ,  G06N3/0464

Abstract: A channel encoding/decoding method and an apparatus, where the method includes: obtaining a plurality of pieces of first information based on a to-be-sent bit sequence, where each piece of first information includes a multi-dimensional time step feature, the multi-dimensional time step feature is determined based on a plurality of bits in the bit sequence, a plurality of bits corresponding to a multi-dimensional time step feature included in an ith piece of first information and a plurality of bits corresponding to a multi-dimensional time step feature included in an (i+1)th piece of first information are partially the same, and i is a positive integer; encoding the plurality of pieces of first information into second information; and sending the second information.

公开(公告)号：US20240333427A1

公开(公告)日：2024-10-03

申请号：US18741363

申请日：2024-06-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shengchen Dai ,  Huazi Zhang ,  Xianbin Wang ,  Rong Li ,  Jun Wang

IPC: H04L1/00 ,  H03M13/13 ,  H04L1/1812

CPC classification number: H04L1/0067 ,  H03M13/13 ,  H04L1/1812

Abstract: This application provides a rate matching method, including: A transmitter obtains a to-be-coded bit sequence; the transmitter performs polar coding on the to-be-coded bit sequence, to obtain a first bit sequence, where a length of the first bit sequence is N; the transmitter performs first rate matching on the first bit sequence, to obtain a second bit sequence, where a length of the second bit sequence is E1; the transmitter sends the second bit sequence; the transmitter performs polar coding based on the to-be-coded bit sequence, to obtain a third bit sequence, where a length of the third bit sequence is 2*N; the transmitter performs second rate matching on the third bit sequence, to obtain a fourth bit sequence, and the transmitter sends the fourth bit sequence, where N, E1 are positive integers.

公开(公告)号：US20240137111A1

公开(公告)日：2024-04-25

申请号：US18400101

申请日：2023-12-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingwei Zhang ,  Tianhang Yu ,  Hejia Luo ,  Shengchen Dai ,  Yunfei Qiao ,  Rong Li ,  Jun Wang

IPC: H04B7/185

CPC classification number: H04B7/18532

Abstract: This application discloses a NB-IoT-based communication method and an apparatus, to evolve a NB-IoT communication technology into an NTN. The method is as follows: A terminal device generates an uplink signal, including a superframe which includes a synchronization sequence located in first duration of the superframe and a data frame located in second duration which is after the first duration, the synchronization sequence successively includes a first sequence repeated Ni times and a second sequence repeated N2 times, the second sequence is obtained by multiplying the first sequence by −1, a part of consecutive sequences of the synchronization sequence are used as a first synchronization reference sequence that is obtained based on the second sequence repeated N2 times and one or more first sequences that are sorted from back to front in the first sequence repeated N1 times. The terminal device sends the uplink signal to a network device.

公开(公告)号：US11777532B2

公开(公告)日：2023-10-03

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

CPC classification number: H03M13/616

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

公开(公告)号：US20230308117A1

公开(公告)日：2023-09-28

申请号：US18176217

申请日：2023-02-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huazi Zhang ,  Xianbin Wang ,  Jiajie Tong ,  Shengchen Dai ,  Rong Li ,  Jun Wang

IPC: H03M13/15 ,  H03M13/00

CPC classification number: H03M13/152 ,  H03M13/616 ,  H03M13/6362

Abstract: An encoding method and apparatus are provided, to propose a construction and encoding scheme of a BCH code. A code length and a code rate of an obtained BCH code are flexible, to satisfy a requirement of flexible channel encoding in wireless communication. The method includes determining a first encoding parameter based on a first BCH code, where the first BCH code is a to-be-coded BCH code, the first encoding parameter is a first code or a generator matrix of a first code, the first code has a code length of n and an information bit length of k, n is greater than o, and k is greater than o, and performing BCH encoding based on the first encoding parameter.

公开(公告)号：US20230283406A1

公开(公告)日：2023-09-07

申请号：US18186912

申请日：2023-03-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xianbin Wang ,  Shengchen Dai ,  Huazi Zhang ,  Jiajie Tong ,  Rong Li ,  Jun Wang

IPC: H04L1/00

CPC classification number: H04L1/0057

Abstract: This application provides a coding method and apparatus. The method includes: obtaining a to-be-coded sequence whose length is N, where the to-be-coded sequence is obtained after an information bit is placed at an information bit position, a frozen bit is placed at a frozen bit position, and first preset bits are placed at a plurality of shaping bit positions in a first position sequence, bits corresponding to the plurality of shaping bit positions after polar coding belong to a plurality of different subcodes of inner code, and shaping bit positions whose corresponding bits after polar coding belong to a same subcode of inner code belong to a same group of shaping bit positions (S501); performing outer code coding on the to-be-coded sequence, to obtain a first outer code sequence whose length is N (S502); obtaining, in parallel based on the first outer code sequence, a plurality of first outer code codeword bits corresponding to a plurality of shaping bit position groups (S503); obtaining a target outer code sequence based on the first outer code sequence and the plurality of first outer code codeword bits (S504); and performing inner code coding on the target outer code sequence, to obtain and output a coded sequence (S505). PAS coding latency can be reduced.

公开(公告)号：US11424963B2

公开(公告)日：2022-08-23

申请号：US17196337

申请日：2021-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yourui Huangfu ,  Rong Li ,  Jian Wang ,  Shengchen Dai ,  Jun Wang ,  Rongdao Yu

IPC: H04L25/02

Abstract: A channel prediction method and a related device, where the method includes: obtaining a first channel coefficient sequence in a first time period, where the first channel coefficient sequence includes a plurality of complex values of a channel coefficient; and determining a prediction value of the channel coefficient in a second time period based on the first channel coefficient sequence and a preset vocabulary of channel changes, where the preset vocabulary of channel changes includes a mapping relationship between a channel change value index and each change value of the channel coefficient, and where the second time period is later than the first time period.

公开(公告)号：US11343014B2

公开(公告)日：2022-05-24

申请号：US16824658

申请日：2020-03-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jian Wang ,  Huangping Jin ,  Shengchen Dai ,  Rong Li ,  Yinggang Du ,  Jun Wang ,  Yiqun Ge

IPC: H04L12/28 ,  H04L1/00 ,  H04B7/06 ,  H04J1/16

Abstract: The application provides method for communicating channel state information (CSI) in a communication network. The method is as follows: An apparatus determines whether a length of CSI is less than a preset length; and adds a padding bit to the CSI when determining that the length of the CSI is less than the preset length, where a length of CSI obtained by adding the padding bit is consistent with the predetermined length. The CSI obtained by adding the padding bit is communicated in the communication network.

公开(公告)号：US11303301B2

公开(公告)日：2022-04-12

申请号：US16710786

申请日：2019-12-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huazi Zhang ,  Rong Li ,  Aleksei Eduardovich Maevskii ,  Shengchen Dai

IPC: H03M13/13 ,  H04L1/00 ,  H04L1/16

Abstract: Embodiments of the present invention disclose a coding method. The method in the embodiments of the present invention includes: constructing a check equation based on a correspondence between a first subchannel and a second subchannel that is in a second subchannel group, where a check bit of the check equation corresponds to the first subchannel, an information bit of the check equation corresponds to the second subchannel, the second subchannel group includes at least one second subchannel, a sequence number of the first subchannel is divided by a first preset value and a remainder is a second preset value, a sequence number of the second subchannel is divided by a third preset value and a remainder is a fourth preset value, and the sequence number of the first subchannel is greater than the sequence number of the second subchannel; and performing coding by using the check equation.