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公开(公告)号：US11502780B2
公开(公告)日：2022-11-15
申请号：US17232769
申请日：2021-04-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lingchen Huang , Shengchen Dai , Chen Xu , 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 cyclic redundancy check (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=11; and performing polar encoding on the first bit sequence.
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公开(公告)号：US11362760B2
公开(公告)日：2022-06-14
申请号：US17189834
申请日：2021-03-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jian Wang , Lingchen Huang , Yunfei Qiao , Rong Li
Abstract: Example Polar code rate matching methods and apparatus are described. One example method includes determining indexes of Z polarized channels on which forced frozen bits are placed, where the Z polarized channels are a subset of N polarized channels corresponding to N to-be-encoded bits, where N=2n, Z
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公开(公告)号：US11336301B2
公开(公告)日：2022-05-17
申请号：US17132597
申请日：2020-12-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yourui Huangfu , Jian Wang , Rong Li , Yunfei Qiao , Jun Wang
Abstract: Example polar coding methods and apparatus are described. One example method includes determining a sequence used to code to-be-coded bits. Polar coding is performed on the to-be-coded bits by using the sequence to obtain coded bits. The sequence is used to represent a reliability order of N polarized channels, N is a mother code length of a polar code, and N is a positive integer power of 2.
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公开(公告)号：US11277154B2
公开(公告)日：2022-03-15
申请号：US16704859
申请日：2019-12-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Guijie Wang , Rong Li , Jun Wang , Gongzheng Zhang , Huazi Zhang
Abstract: A polar code-based interleaving method and apparatus, to resolve a problem existing in the prior art that when a code length is relatively long, an implementation process of reading a sequence obtained after random interleaving is relatively complex, is provided. The method includes: determining an interleaving matrix based on a target code length M of a polar code; and interleaving, based on the interleaving matrix, encoded bits obtained after encoding of the polar code, to generate interleaved bits.
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公开(公告)号：US11251904B2
公开(公告)日：2022-02-15
申请号：US16778812
申请日：2020-01-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04L1/00
Abstract: This application relates to the field of communications technologies, and discloses a polar code encoding method and apparatus, to improve accuracy of reliability computation and sorting of polar channels. The method is: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polar channels, and the sequence numbers of the N polar channels are arranged in the first sequence based on corresponding reliabilities of the N polar channels, where K is a positive integer, N is a mother code length of a polar code, N is a positive integer that is a power of 2, and K≤N; selecting sequence numbers of K polar channels from the first sequence in descending order of the reliabilities; and placing the to-be-encoded bits based on the selected sequence numbers of the K polar channels, and performing polar code encoding on the to-be-encoded bits.
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Patent Agency Ranking
公开(公告)号：US20220022155A1
公开(公告)日：2022-01-20
申请号：US17487948
申请日：2021-09-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yu Wang , Rong Li , Xian Meng , Bin Wang , Rongdao Yu , Yinggang Du
Abstract: User equipment receives at least one TAC that is broadcast by a network device, where the TAC includes geographical location information, and the geographical location information is used to indicate a geographical location of a preset location point in a TA corresponding to the TAC. The user equipment determines, based on the TAC and a tracking area list (TAL), whether the TAL needs to be updated. If it is determined that the TAL needs to be updated, the user equipment sends a tracking area update request to the network device. The user equipment receives a response message, of the tracking area update request, returned by the network device.
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137.发明授权公开(公告)号：US11223371B2
公开(公告)日：2022-01-11
申请号：US16798916
申请日：2020-02-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hejia Luo , Rong Li , Vladimir Vitalievich Gritsenko , Aleksei Eduardovich Maevskii , Jun Wang
Abstract: A polar code encoder is configured to: map q bits to q positions of q sub-channels, where q is a positive integer, and the q bits are used to indicate a version of encoded codeword; map K-q information bits to K-q positions for the K-q information bits, K is an integer, K>q; and perform polar encoding over an input vector u0N-1, comprising the q bits and the K-q information bits, with the length of N, N is an integer, N>=K and scramble with scrambling vector over the polar encoded bits, where the scrambling vector is associated to the q sub-channels or the scrambling vector is associated to a special frozen bit which is corresponding to the q sub-channels.
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公开(公告)号：US20210344355A1
公开(公告)日：2021-11-04
申请号：US17378140
申请日：2021-07-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tianhang Yu , Gongzheng Zhang , Rong Li , Zhaoyang Zhang
Abstract: This application provides a polar coding method, a polar decoding method, and an apparatus. A transmit end obtains K to-be-coded bits and an index set including K polar channels, where a value set of K1 indexes in the set of the K indexes or a value set of K2 indexes in the set of the K indexes is determined based on a value set of K2 of the K to-be-coded bits, and the value set of the K1 indexes and the value set of the K2 indexes are complementary sets of each other; and performs polar coding on K1 to-be-coded bits. In comparison with a conventional polar coding method and a conventional polar decoding method, the polar coding method and the polar decoding method provided in this application can achieve an effect of reducing a bit rate. A simulation result indicates that the method has better performance.
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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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