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公开(公告)号：US20210184701A1
公开(公告)日：2021-06-17
申请号：US17186781
申请日：2021-02-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang MA , Hang LI , Yuejun WEI
Abstract: Example successive cancellation list (SCL) parallel decoding methods and apparatus are described. One example method includes obtaining L1 first decoding paths of an (i−1)th group of to-be-decoded bits after received data corresponds to P groups of to-be-decoded bits, where i is an integer, P is an integer greater than 1, 1
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公开(公告)号：US20190296768A1
公开(公告)日：2019-09-26
申请号：US16436912
申请日：2019-06-10
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang MA , Yuejun WEI
Abstract: A data transmission method, a sending device, and a receiving device are provided. A sending device obtains information data, encodes the information data by using a quasi-cyclic low-density parity-check (LDPC) code matrix, modulates the encoded data to obtain first data, and sends the first data. A receiving device obtains second data, demodulates the second data to obtain to-be-decoded data, and decodes the to-be-decoded data by using a block matrix in an LDPC code matrix, where the block matrix is a submatrix in the quasi-cyclic LDPC matrix, and in the quasi-cyclic LDPC matrix, a row weight of a row (H−1) is greater than or equal to a row weight of a row H, or a row weight of a row (H−1) is less than or equal to a row weight of a row H. In this way, decoding efficiency can be improved.
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13.发明申请公开(公告)号：US20230059125A1
公开(公告)日：2023-02-23
申请号：US17888198
申请日：2022-08-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang MA , Chen ZHENG , Xiaojian LIU , Yuejun WEI , Xin ZENG
Abstract: A low density parity check (LDPC) channel encoding method for use in a wireless communications system includes a communication device encoding an input bit sequence by using a LDPC matrix to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. The encoding method can be used in various communications systems including the fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.
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14.发明申请公开(公告)号：US20210385015A1
公开(公告)日：2021-12-09
申请号：US17406354
申请日：2021-08-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang MA , Xin ZENG , Yuejun WEI , Carmela COZZO
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：US20200067641A1
公开(公告)日：2020-02-27
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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Patent Agency Ranking
公开(公告)号：US20200052858A1
公开(公告)日：2020-02-13
申请号：US16657743
申请日：2019-10-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang MA , Xin ZENG , Yuejun WEI , Chaolong ZHANG , Gongzheng ZHANG
Abstract: The present disclosure relates to information processing methods and apparatus, communications devices, and communications systems. One example method includes adding redundancy check bits to a bit sequence A to obtain a bit sequence C, performing cyclic shift on the bit sequence C based on a shift t and a lifting factor z to obtain a bit sequence Ct, where t is an integer greater than or equal to 0, and the shift t is obtained based on second information, and performing low-density parity-check (LDPC) encoding on the bit sequence Ct to obtain a bit sequence Dt.
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公开(公告)号：US20190393978A1
公开(公告)日：2019-12-26
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：US20220352903A1
公开(公告)日：2022-11-03
申请号：US17742183
申请日：2022-05-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chen ZHENG , Liang MA , Xiaojian LIU , Yuejun WEI , Xin ZENG
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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公开(公告)号：US20220329677A1
公开(公告)日：2022-10-13
申请号：US17642351
申请日：2020-09-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Guoping WU , Liang MA , Siwei WANG , Guangxiang ZHU , Chengjie GAO , Yuchan YANG , Huan WANG
Abstract: Embodiments of this application provide a middle frame, a rear cover, and fabrication methods thereof, and an electronic device. The electronic device may include a mobile or fixed terminal with a frame or a housing, such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a walkie-talkie, a netbook, a POS terminal, a personal digital assistant (PDA), an event data recorder, a wearable device, a virtual reality device, a wireless USB flash drive, a Bluetooth speaker/headset, or a vehicle-mounted device. Ceramics and fiber reinforced composite are used to form frames of a rear cover and a middle frame, to reduce thicknesses of a ceramic outer housing and a ceramic outer frame, thereby reducing a weight of the electronic device.
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公开(公告)号：US20210359786A1
公开(公告)日：2021-11-18
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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