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公开(公告)号：US20190173499A1
公开(公告)日：2019-06-06
申请号：US16262921
申请日：2019-01-31
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Chen Zheng , Liang Ma , Jie Xiong , Xin Zeng , Xiaojian Liu , Yuejun Wei
Abstract: This application discloses an information processing method. A communication device obtains an input sequence. The input sequence has a quantity B of information bits. The communication devices transforms the input sequence into one or more code blocks. The communication device encodes each of the code blocks individually, to obtain one or more encoded code blocks. Each of the code blocks has a code block length less than or equal to a maximum code block length. Each of the code blocks includes a segment of the input sequence and may include one or more cyclic redundancy check (CRC) bits corresponding to the segment of the input sequence. The encoded code blocks can meet various channel coding requirements.
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公开(公告)号：US20190158114A1
公开(公告)日：2019-05-23
申请号：US16205186
申请日：2018-11-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chen Zheng , Liang Ma , Xiaojian Liu , Yuejun Wei , Xin Zeng
CPC classification number: H03M13/1102 , H03M13/11 , H03M13/116 , H03M13/616 , H03M13/6393 , H03M13/6516 , H04L1/00
Abstract: This application relates to communicating information between communication devices. A channel coding method is disclosed. A communication device obtains an input sequence of K bits. The communication device encodes the input sequence using a low density parity check (LDPC) matrix H, to obtain an encoded sequence. The LDPC matrix H is determined according to a base matrix and a lifting factor Z. The base matrix includes m rows and n columns, m is greater than or equal to 5, and n is greater than or equal to 27. The lifting factor Z satisfies a relationship of 22*Z≥K. According to the encoding method provided in the embodiments, information bit sequences of a plurality of lengths can be encoded for transmission between the communication devices.
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23.发明授权公开(公告)号：US11742987B2
公开(公告)日：2023-08-29
申请号：US17406354
申请日：2021-08-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang Ma , Xin Zeng , Yuejun Wei , Carmela Cozzo
CPC classification number: H04L1/0067 , H03M13/11 , H03M13/616 , H03M13/635 , H03M13/6393 , H04L1/0013
Abstract: This application discloses a method and an apparatus for processing information, a communications device, and a communications system. The communications device is configured to obtain a starting position of an output bit sequence in a coded block in a circular buffer, and determine the output bit sequence in the coded block based on a length of the output bit sequence and the starting position. A value of the starting position is one of {p0, p1, p2, . . . , pkmax−1}, where 0≤pk
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公开(公告)号：US11588576B2
公开(公告)日：2023-02-21
申请号：US17389004
申请日：2021-07-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Liang Ma , Xin Zeng , Chen Zheng , Yuejun Wei
Abstract: This application provides a data transmission method, a base station, and a terminal device. The method includes: determining, by a base station, a target base graph in N Raptor-like LDPC base graphs; and sending, by the base station, indication information to a terminal device, where the indication information is used to indicate the terminal device to use the target base graph to perform LDPC encoding and decoding. Based on the foregoing technical solution, the base station may determine a target base graph in a plurality of Raptor-like LDPC base graphs that may be used to perform LDPC encoding and decoding, and indicate the target base graph to the terminal device. Further, for one code rate or one code length, the base station may select different base graphs as required.
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公开(公告)号：US11463108B2
公开(公告)日：2022-10-04
申请号：US16691281
申请日：2019-11-21
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chen Zheng , Yuejun Wei , Liang Ma , Xiaojian Liu , Xin Zeng
Abstract: This application discloses an information processing method and apparatus, a communications device, and a communications system. The method includes: encoding an input sequence by using a low-density parity-check (LDPC) matrix, to obtain a bit sequence D, where a base matrix of the LDPC matrix is represented as a matrix of m rows and n columns, each column corresponds to a group of Z consecutive bits in the bit sequence D, and n and Z are both integers greater than 0; and obtaining an output bit sequence based on a bit sequence V, where the bit sequence V is obtained by permuting two groups of bits corresponding to at least two parity check columns in the bit sequence D.
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Patent Agency Ranking
公开(公告)号：US11133832B2
公开(公告)日：2021-09-28
申请号：US16531956
申请日：2019-08-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang Ma , Chen Zheng , Xin Zeng , Yuejun Wei
Abstract: Embodiments of this application disclose a data processing method and a data processing device. The method includes: obtaining a first to-be-processed bit sequence, where the first to-be-processed bit sequence is a transport block or a code block generated by performing code block segmentation on a transport block; encoding the first to-be-processed bit sequence to obtain a first encoded bit sequence; storing all or at least some bits of the first encoded bit sequence into a circular buffer; and outputting a first output bit sequence from the bits stored in the circular buffer. According to the method and the device that are provided in this application, rate matching can be implemented for a sequence generated through LDPC encoding.
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公开(公告)号：US11101927B2
公开(公告)日：2021-08-24
申请号：US16673613
申请日：2019-11-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Liang Ma , Xin Zeng , Chen Zheng , Yuejun Wei
Abstract: This application provides a data transmission method, a base station, and a terminal device. The method includes: determining, by a base station, a target base graph in N Raptor-like low-density parity-check (LDPC) base graphs; and sending, by the base station, indication information to a terminal device, where the indication information is used to indicate the terminal device to use the target base graph to perform LDPC encoding and decoding. Based on the foregoing technical solution, the base station may determine a target base graph in a plurality of Raptor-like LDPC base graphs that may be used to perform LDPC encoding and decoding, and indicate the target base graph to the terminal device. Further, for one code rate or one code length, the base station may select different base graphs as required.
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公开(公告)号：US10951352B2
公开(公告)日：2021-03-16
申请号：US16562389
申请日：2019-09-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chen Zheng , Liang Ma , Yuejun Wei , Xin Zeng
Abstract: Embodiments of this application provide a communications method and apparatus. The method includes: obtaining an input sequence for rate matching, wherein the input sequence is a retransmission sequence corresponding to a transport block, the input sequence comprises M code block groups, a value of M is less than a quantity of code block groups obtained after the transport block is segmented, and the M code block groups comprise Ct code blocks; and performing rate matching on the Ct code blocks, wherein a length of a rate matching output sequence of of each of the Ct code blocks satisfies the following conditions: when j≤Ct−γ−1, E=NL·Qm·└G′/Ct┘; when j>Ct−γ−1, E=NL·Qm·┌G′/Ct┐. The method may be applicable to a system in which transmission is performed based on a code block group, and resources are fully used as many as possible, thereby improving performance.
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公开(公告)号：US10938514B2
公开(公告)日：2021-03-02
申请号：US16446237
申请日：2019-06-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaojian Liu , Yuejun Wei , Xin Zeng
Abstract: A data transmission method, a data sending device, and a data receiving device are provided. The method includes: encoding, by a data sending device, information data by using a low-density parity-check (LDPC) code matrix, to obtain a bit sequence, where the bit sequence includes a first bit sequence, and the first bit sequence includes at least one information bit in the bit sequence; interleaving, the first bit sequence to obtain a first interleaved bit sequence; performing, modulation based on the first interleaved bit sequence to obtain a sending signal, and sending the sending signal. The method also includes: demodulating, by a data receiving device, a receiving signal to obtain a soft value sequence; and de-interleaving, the soft value sequence, to obtain a soft value sequence of a first bit sequence. This can improve a capability of an LDPC code resisting burst interference.
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公开(公告)号：US10826530B2
公开(公告)日：2020-11-03
申请号：US16279551
申请日：2019-02-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Liang Ma , Yuejun Wei , Chen Zheng , Xin Zeng
Abstract: The present disclosure relates to a communications field, and discloses a method for generating a base matrix of an LDPC code, an encoding/decoding method, and a device, to resolve a problem that a probability of a decoding error increases because performance of a transformed check matrix cannot be ensured due to a poor puncturing pattern. A specific solution is as follows: A size of a check bit part of a base matrix is determined based on a required minimum bit rate, and the check bit part of the base matrix is determined based on the size of the check bit part and an initial matrix. The initial matrix is a matrix with a size of m×m that has a bidiagonal structure, the check bit part is a k-order transformation matrix Hk obtained after the initial matrix is transformed k times, k meets 2k−1m
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