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公开(公告)号：US11139918B2
公开(公告)日：2021-10-05
申请号：US16812353
申请日：2020-03-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yue Zhou , Guijie Wang , Rong Li , Yinggang Du
Abstract: Various embodiments provide an interleaving method, to improve error correction performance of a polar code. In these embodiments, a first bit sequence is obtained. The first bit sequence includes L number of bits, and L is a positive integer. The L number of bits are then written into an interleaving matrix according to a preset write rule. The interleaving matrix includes C rows and R number of columns. C and R are positive integers. The L number of bits can be read from the interleaving matrix according to a preset read rule to obtain a second bit sequence. The second bit sequence includes L number of bits; and sending the second bit sequence.
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公开(公告)号：US11133894B2
公开(公告)日：2021-09-28
申请号：US16529514
申请日：2019-08-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huazi Zhang , Rong Li , Yunfei Qiao , Hejia Luo , Gongzheng Zhang , Ying Chen
Abstract: The present disclosure relates to information transmission method, decoding method, and apparatus. One example method includes encoding, by a sending device, a to-be-encoded sequence based on preset parameters to obtain an encoded sequence, where the preset parameters include a quantity of check bits, positions of the check bits, and a check equation, and sending the encoded sequence to a receiving device.
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公开(公告)号：US11133828B2
公开(公告)日：2021-09-28
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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公开(公告)号：US11121809B2
公开(公告)日：2021-09-14
申请号：US16693906
申请日：2019-11-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lingchen Huang , Shengchen Dai , Chen Xu , Yunfei Qiao , Rong Li
IPC: H04L1/00
Abstract: This application provides a channel encoding method and apparatus in wireless communications. The method includes: performing CRC encoding on A to-be-encoded information bits, to obtain a first bit sequence, where the first bit sequence includes L CRC bits and A information bits; performing a interleaving operation on the first bit sequence, to obtain a second bit sequence, where a first interleaving sequence used for the interleaving operation is obtained based on a system-supported maximum-length interleaving sequence with the length of Kmax+L, and Kmax is a maximum information bit quantity corresponding to the maximum-length interleaving sequence ad a preset rule, and a length of the first interleaving sequence is equal to A+L. Therefore, during distributed CRC encoding, when an information bit quantity is less than the maximum information bit quantity, an interleaving sequence required for completing an interleaving process is obtained based on the system-supported maximum-length interleaving sequence.
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公开(公告)号：US11088708B2
公开(公告)日：2021-08-10
申请号：US16728594
申请日：2019-12-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lingchen Huang , Rong Li , Huazi Zhang , Chen Xu , Shengchen Dai , Gongzheng Zhang , Yunfei Qiao
Abstract: The present disclosure relates to polar code encoding methods and apparatus. One example method includes separately performing check encoding on the at least two to-be-checked first bit sequences to obtain at least two check bit sequences, where a union set of the at least two to-be-checked first bit sequences includes the K information bits, and K is a positive integer, interleaving the K information bits and the at least two check bit sequences, or interleaving a first part of information bit sequence and a first check bit sequence to obtain an interleaved third bit sequence, where a second check bit sequence, a third check bit sequence, and a second part of information bit sequence in a sequence of all information bits except the first part of information bit sequence form a second bit sequence, and performing polar encoding on the second bit sequence.
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Patent Agency Ranking
公开(公告)号：US11076408B2
公开(公告)日：2021-07-27
申请号：US16579598
申请日：2019-09-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yourui Huangfu , Hejia Luo , Jian Wang , Huazi Zhang , Rong Li
Abstract: This application provides an information transmission method, a network device, and a terminal device. The method includes: generating, by a network device, downlink control information DCI; determining, by the network device, a corresponding processing manner based on a format of the DCI; performing, by the network device, processing in the processing manner in an encoding process of the DCI; and sending, by the network device, the processed DCI over a physical downlink control channel PDCCH. The information transmission method provided in this application can resolve a problem of a failure in blind detection on DCI caused by a nested encoding feature of polar encoding. When a terminal device cannot determine the format of the DCI sent by the network device, the network device may use a mapping relationship, and the network device processes DCI of a format in a processing manner.
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公开(公告)号：US11057150B2
公开(公告)日：2021-07-06
申请号：US16544529
申请日：2019-08-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hejia Luo , Shengchen Dai , Ying Chen , Gongzheng Zhang , Rong Li , Chaolong Zhang
Abstract: This application discloses a transmission method, a transmission apparatus, and a communications device. The transmission method includes: performing polar encoding on a bit sequence, to obtain an encoded sequence, where the bit sequence includes control information and a cyclic redundancy check CRC sequence; fragmenting the encoded sequence, to obtain n encoded subsequences, where n is an integer, and n>0; and scrambling the n encoded subsequences by using n scrambling sequences respectively, to obtain n scrambled sequences. In the transmission method, the n scrambling sequences are newly defined based on encoding and decoding features of a polar code, and the n scrambling sequences additionally carry ┌log2n┐-bit information. According to the foregoing encoding method, signaling overheads are reduced.
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公开(公告)号：US11057052B2
公开(公告)日：2021-07-06
申请号：US16564774
申请日：2019-09-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Gongzheng Zhang , Rong Li , Jun Wang , Ying Chen , Huazi Zhang
Abstract: A data processing method is disclosed, and the method includes: receiving, by an encoding end, a to-be-encoded data block; obtaining, by the encoding end, a first mother code element for each first indication element in a first indication sequence based on an association relationship in which S=Q+B*N0 when B>0, and S=Q when B=0; and placing the first mother code element at a location of the first indication element in the first indication sequence to obtain a first mother code sequence.
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公开(公告)号：US11050508B2
公开(公告)日：2021-06-29
申请号：US16522386
申请日：2019-07-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yue Zhou , Rong Li , Gongzheng Zhang , Yinggang Du , Jun Wang
Abstract: This application provides a polar code encoding method and apparatus. The method includes: segmenting, by a sending device, a to-be-encoded sequence according to a preset rule; determining a quantity of parity check frozen bits, locations of the parity check frozen bits, a quantity of information bits, locations of the information bits, a quantity of frozen bits, and locations of the frozen bits in each segment; then placing the information bits and the frozen bits at the corresponding locations; determining values of the parity check frozen bits; then performing polar code encoding on the to-be-encoded sequence; and sending an encoded sequence. According to this method, a process of determining the quantity of parity check frozen bits and the locations of the parity check frozen bits is simplified, thereby effectively improving processing efficiency.
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公开(公告)号：US20210194733A1
公开(公告)日：2021-06-24
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.
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