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公开(公告)号：US20230123058A1
公开(公告)日：2023-04-20
申请号：US18063569
申请日：2022-12-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengchen DAI , Huazi Zhang , Jiajie Tong , Xianbin Wang , Rong Li , Jun Wang , Wei Huang
Abstract: A polar encoding and decoding method and apparatus are provided. The method includes: obtaining K to-be-encoded bits; selecting K sequence numbers from a first sequence, where the to-be-encoded bits are placed on polar channels corresponding to the K sequence numbers; and performing polar code encoding on the K to-be-encoded bits to obtain encoded bits, where the first sequence includes sequence numbers of N polar channels, and the first sequence is one or a subsequence of a related sequence. This technical solution is applicable to a short message communication system of a BeiDou satellite. The method can effectively improve performance of the communication system and reduce complexity.
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公开(公告)号：US20210185657A1
公开(公告)日：2021-06-17
申请号：US17187364
申请日：2021-02-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huazi ZHANG , Rong LI , Xianbin WANG , Shengchen DAI , Yiqun GE , Yan CHEN , Jun WANG , Jianglei MA
IPC: H04W72/04
Abstract: A resource mapping method and apparatus are described that reduce resource mapping complexity. The method includes an access network device obtaining resource mapping information of at least one terminal, and sending the resource mapping information to the at least one terminal respectively. The resource mapping information indicates a resource element RE to which each of the at least one terminal performs mapping in each RMB in a first resource mapping block RMB set. An RE to which a first terminal performs mapping in each RMB in the first RMB set is determined based on a first interleaved sequence, and the first interleaved sequence is determined based on a base sequence. The first terminal is any one of the at least one terminal, and the first RMB set includes at least one RMB.
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公开(公告)号：US20200028524A1
公开(公告)日：2020-01-23
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：US20200008096A1
公开(公告)日：2020-01-02
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：US20190326933A1
公开(公告)日：2019-10-24
申请号：US16459008
申请日：2019-07-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huazi ZHANG , Jun WANG , Rong Li , Lingchen HUANG , Jian WANG , Shengchen DAI , Jiajie TONG , Vladimir GRITSENKO , Oleg Feat'evich KURMAEV , Aleksei Eduardovich MAEVSKII
Abstract: A method comprises: obtaining a coded bit sequence by performing PC-polar coding on information bits based on first constructor parameters; and sending the coded bit sequence. A check equation of the first constructor parameters includes a first element representing a check-required information bit position and a second element representing a check bit position, the first element corresponds to a first vector (V1) in a generator matrix for PC-polar codes, the second element corresponds to a second vector (V2) in the generator matrix, and if a first Hamming weight (HW1) of V1 is the same as a second Hamming weight (HW2) of V2, then a third Hamming weight (HW3) of an addition modulo 2 vector is greater than HW1 and greater than HW2, or if HW1 is different from HW2, then HW3 is greater than a smaller one of the HW1 and HW2.
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Patent Agency Ranking
公开(公告)号：US20240137152A1
公开(公告)日：2024-04-25
申请号：US18399870
申请日：2023-12-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jiajie TONG , Huazi ZHANG , Shengchen DAI , Xianbin WANG , Rong LI , Jun WANG
CPC classification number: H04L1/0057 , H03M13/15 , H04W28/04
Abstract: A polar code construction method and an apparatus. A communication apparatus obtains a reliability weight sequence, and determines a first threshold that indicates a weight of lowest reliability of a subchannel corresponding to an information bit. The communication apparatus determines a non-pre-frozen subchannel corresponding to a content value greater than or equal to the first threshold in the reliability weight sequence as the subchannel corresponding to the information bit based on the first threshold, and performs polar coding on the information bit based on the subchannel corresponding to the information bit.
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公开(公告)号：US20230283299A1
公开(公告)日：2023-09-07
申请号：US18317259
申请日：2023-05-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xianbin WANG , Rong LI , Huazi ZHANG , Shengchen DAI , Jiajie TONG , Yunfei QIAO , Jun WANG
IPC: H03M13/13 , H04L5/00 , H04L1/1607
CPC classification number: H03M13/13 , H04L5/0048 , H04L1/1621
Abstract: This application provides a polar encoding method and apparatus. The method can include obtaining a basic sequence, where the basic sequence includes N0 subchannel numbers. The method can also include sequentially reading first subchannel numbers from the basic sequence, and sequentially reading 2m second subchannel numbers from the basic sequence starting from an Mth subchannel number based on the first subchannel number read each time; and adding q*N0 to each of the 2m second subchannel numbers to obtain 2m third subchannel numbers. Furthermore, the method can include constructing a polar code by using subchannels corresponding to the 2m third subchannel numbers as information bits. A polar code with another code length is constructed based on a sequence with a length of N0. A length of a polar code that needs to be stored is therefore reduced, which reduces complexity and is also easy to implement.
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公开(公告)号：US20230224082A1
公开(公告)日：2023-07-13
申请号：US18174132
申请日：2023-02-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xianbin WANG , Shengchen DAI , Rong LI , Jian WANG , Xingqing CHENG
CPC classification number: H04L1/08 , H04L1/0041 , H04L1/0045 , H04L1/0057 , H04L1/0067
Abstract: A retransmission method includes obtaining, by a transmitter, a to-be-coded bit sequence that comprises K to-be-coded bits, where K is a positive integer. The retransmission method further includes performing polar coding on the to-be-coded bit sequence thereby obtaining a coded first bit sequence, and determining an initial transmission version (RV0). A length of the coded first bit sequence is N0. The retransmission method further includes determining a length (E1) of a retransmission version (RV1), determining the RV1 based on an initial transmission bit rate (R0), and sending the RV1.
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公开(公告)号：US20230163784A1
公开(公告)日：2023-05-25
申请号：US18151976
申请日：2023-01-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jun WANG , Wen TONG , Xianbin WANG , Rong LI , Yourui HUANGFU , Shengchen DAI , Huazi ZHANG , Jian WANG
CPC classification number: H03M13/09 , H03M13/611
Abstract: A polar code encoding method includes obtaining, by an encoding apparatus, to-be-encoded bits, a mother code length, and a first sequence. The first sequence includes sequence numbers of polarized subchannels. The sequence numbers of the polarized subchannels are arranged in the first sequence based on reliability of the polarized subchannels. The method also includes determining, based on the first sequence, polarized subchannels used to contain the to-be-encoded bits, and performing polarization encoding on the to-be-encoded bits to obtain an encoded bit sequence. The method further includes performing rate matching on the encoded sequence to obtain a rate-matched sequence. The method additionally includes outputting the rate-matched sequence.
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公开(公告)号：US20210352524A1
公开(公告)日：2021-11-11
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
Abstract: This application provides a wireless communication method and device. The method includes: obtaining downlink control information DCI and a scrambled sequence that are sent by 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 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 configuration information does not correspond to another piece of configuration information of the plurality of pieces of configuration information; descrambling, based on a possible value of each piece of configuration information, the bits that correspond to each piece of configuration information, to obtain a descrambled sequence; and performing a check operation by using the descrambled sequence and the DCI.
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