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公开(公告)号：US12113549B2
公开(公告)日：2024-10-08
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
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 0, and k is greater than 0, and performing BCH encoding based on the first encoding parameter.
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公开(公告)号：US12074713B2
公开(公告)日：2024-08-27
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 , H03M13/00 , H03M13/03 , H03M13/13 , H04L1/00 , H04L1/1867
CPC classification number: H04L1/1819 , H03M13/033 , H03M13/13 , H03M13/611 , H03M13/6306 , H04L1/0057 , 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 are 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.
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公开(公告)号：US12052097B2
公开(公告)日：2024-07-30
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
CPC classification number: H04L1/0057
Abstract: A coding method and apparatus are provided. The method includes: obtaining a to-be-coded sequence whose length is N, after an information bit is placed at an information bit position, wherein first preset bits are placed at shaping bit positions in a first position sequence, and shaping bit positions whose corresponding bits after polar coding belong to a same subcode of inner code belong to a same group; performing outer code coding on the to-be-coded sequence, to obtain a first outer code sequence whose length is N, based on which first outer code codeword bits corresponding to shaping bit position groups are obtained; obtaining a target outer code sequence based on the first outer code sequence and the first outer code codeword bits; and performing inner code coding on the target outer code sequence, to obtain and output a coded sequence. Probability amplitude shaping (PAS) coding latency can be reduced.
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公开(公告)号：US11888614B2
公开(公告)日：2024-01-30
申请号：US17704869
申请日：2022-03-25
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: A method includes determining, based on a length of to-be-encoded information bits and a code rate, a code length N after encoding; determining, based on N, a minimum segment code length and a maximum segment code length, a reserved segment quantity of each type of segments in segments of b−a+1 types of segment code lengths and a reserved code length corresponding to N, where the minimum segment code length is 2{circumflex over ( )}a, and the maximum segment code length is 2{circumflex over ( )}b; determining a segment quantity of each type of segments based on N, the reserved code length, a segment code length of each type of segments, and the reserved segment quantity, where N corresponds to S segments, and a segment code length of an ith segment in the S segments is greater than or equal to a segment code length of an (i+1)th segment in the S segments.
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公开(公告)号：US11811528B2
公开(公告)日：2023-11-07
申请号：US17491529
申请日：2021-10-01
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Jun Wang , Gongzheng Zhang , Huazi Zhang , Chen Xu , Lingchen Huang , Shengchen Dai , Hejia Luo , Yunfei Qiao , Rong Li , Jian Wang , Ying Chen , Nikita Polianskii , Mikhail Kamenev , Zukang Shen , Yourui HuangFu , Yinggang Du
CPC classification number: H04L1/0058 , H03M13/13 , H04L1/0043 , H04L1/0057 , H04L1/0061 , H03M13/00 , H03M13/09 , H03M13/134 , H03M13/2906
Abstract: This application relates to the field of wireless communications technologies, and discloses an encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the first sequence is same as a second sequence or a subset of the second sequence, the second sequence comprises sequence numbers of Nmax polarized channels, and the second sequence is the sequence shown in Sequence Q11 or Table Q11, K is a positive integer, N is a positive integer power of 2, n is equal to or greater than 5, K≤N, Nmax=1024; selecting sequence numbers of K polarized channels from the first sequence; and performing polar code encoding on K the to-be-encoded bits based on the selected sequence numbers of the K polarized channels.
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Patent Agency Ranking
公开(公告)号：US11665585B2
公开(公告)日：2023-05-30
申请号：US17385338
申请日：2021-07-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengchen Dai , Rong Li , Chaolong Zhang , Lingchen Huang , Hejia Luo
CPC classification number: H04W28/04 , H04L1/001 , H04L27/2607 , H04W72/23
Abstract: Examples in this application provide a wireless communication method and device. One example method includes obtaining downlink control information and a scrambled sequence from a network device, where bits corresponding to the scrambled sequence are scrambled with each piece of configuration information of a plurality of pieces of configuration information used for configuring a terminal device by the network device, each piece of the configuration information corresponds to at least one bit in the scrambled sequence, and at least one bit of the bits that correspond to each piece of the configuration information does not correspond to another piece of configuration information of the plurality of pieces of the configuration information, descrambling, based on a possible value of each piece of the configuration information, the bits corresponding to each piece of the configuration information, to obtain a descrambled sequence, and performing a check operation using the descrambled sequence and the DCI.
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公开(公告)号：US20220109524A1
公开(公告)日：2022-04-07
申请号：US17491529
申请日：2021-10-01
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Jun Wang , Gongzheng Zhang , Huazi Zhang , Chen Xu , Lingchen Huang , Shengchen Dai , Hejia Luo , Yunfei Qiao , Rong Li , Jian Wang , Ying Chen , Nikita Polianskii , Mikhail Kamenev , Zukang Shen , Yourui HuangFu , Yinggang Du
Abstract: This application relates to the field of wireless communications technologies, and discloses an encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the first sequence is same as a second sequence or a subset of the second sequence, the second sequence comprises sequence numbers of Nmax polarized channels, and the second sequence is the sequence shown in Sequence Q11 or Table Q11, K is a positive integer, N is a positive integer power of 2, n is equal to or greater than 5, K≤N, Nmax=1024; selecting sequence numbers of K polarized channels from the first sequence; and performing polar code encoding on K the to-be-encoded bits based on the selected sequence numbers of the K polarized channels.
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公开(公告)号：US11095312B2
公开(公告)日：2021-08-17
申请号：US16556920
申请日：2019-08-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lingchen Huang , Rong Li , Chen Xu , Gongzheng Zhang , Shengchen Dai
Abstract: Embodiments of polar encoding/decoding methods and apparatuses are described. CRC encoding is performed on an information block to obtain a CRC encoded block with a length of B, where a CRC length is Lcrc, an information block length is K, and B=K+Lcrc. The CRC encoded block is interleaved. Lpc CRC bits in the interleaved encoded block are located between bits of the information block. Each CRC bit of the Lpc CRC bits is located after all bits checked by using the CRC bit. Lpc is an integer greater than 0 and less than Lcrc. The interleaved encoded block is mapped to information bits. A frozen bit is set to an agreed fixed value. Polar encoding is performed on the information bits and the frozen bit to obtain a polar encoded codeword to improve performance of a CA-polar code.
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公开(公告)号：US11076316B2
公开(公告)日：2021-07-27
申请号：US16566500
申请日：2019-09-10
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengchen Dai , Rong Li , Chaolong Zhang , Lingchen Huang , Hejia Luo
Abstract: This application provides a wireless communication method and device. The method includes: scrambling, with each piece of configuration information of a plurality of pieces of configuration information for configuring a terminal device, bits that are included in a cyclic redundancy check (CRC) of downlink control information (DCI) and that correspond to each piece of configuration information, to obtain a scrambled sequence, where at least one bit of bits that correspond to each piece of configuration information does not correspond to another piece of configuration information of the plurality of pieces of configuration information; and sending the DCI and the scrambled sequence to the terminal device.
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公开(公告)号：US10999009B2
公开(公告)日：2021-05-04
申请号：US16579287
申请日：2019-09-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengchen Dai , Lingchen Huang , Gongzheng Zhang , Yunfei Qiao , Rong Li
Abstract: This application provides an encoding method and apparatus in wireless communications between a network device and a terminal. The method includes: performing CRC encoding on A to-be-encoded information bits based on a CRC polynomial, to obtain a first bit sequence, where the first bit sequence includes L CRC bits and A information bits, L=6; and performing polar encoding on the first bit sequence. Based on an improved CRC polynomial, encoding satisfying an FAR requirement is implemented.
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