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公开(公告)号：US10574401B2
公开(公告)日：2020-02-25
申请号：US16298901
申请日：2019-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Rong Li , Guijie Wang , Gongzheng Zhang , Jian Wang , Jun Wang
Abstract: Embodiments of this application provide a polar code retransmission method and apparatus, to reduce retransmission complexity and improve transmission performance. The method includes: determining a first polar channel sequence including N polar channels and reliability of each of the N polar channels; determining, based on a coding parameter for an mth data transmission, a quantity Km of information bits that need to be transmitted during the mth data transmission, where the coding parameter includes at least one of the quantity of information bits and a code rate; determining Km polar channels with highest reliability in the first polar channel sequence; determining Km information bits based on locations, of information bits that need to be transmitted during first m−1 data transmissions, in the first polar channel sequence; and mapping the Km information bits to the Km polar channels for transmission.
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Patent Agency Ranking
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：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：US11025278B2
公开(公告)日：2021-06-01
申请号：US16519988
申请日：2019-07-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Gongzheng Zhang , Huazi Zhang , Yunfei Qiao , Rong Li , Jun Wang , Guijie Wang
Abstract: The present disclosure relates to polar encoding methods and apparatus. One example method includes obtaining locations of information bits and frozen bits based on a reliability order of polar channels, where reliability of a polar channel corresponding to the information bits is higher than reliability of a polar channel corresponding to the frozen bits, performing cyclic redundancy check (CRC) encoding on an information block, mapping bits obtained after the CRC encoding to the information bits, determining at least one bit of the frozen bits as a check frozen bit, where a value of the check frozen bit is determined based on values of P information bits that are in information bits prior to the check frozen bit and that meet a preset condition, and performing polar encoding on the information bits, the check frozen bit, and a frozen bit other than the check frozen bit.
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公开(公告)号：US20200213038A1
公开(公告)日：2020-07-02
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：US20190207720A1
公开(公告)日：2019-07-04
申请号：US16298901
申请日：2019-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Rong Li , Guijie Wang , Gongzheng Zhang , Jian Wang , Jun Wang
CPC classification number: H04L1/1825 , H03M13/13 , H04L1/0041 , H04L1/0057 , H04L1/1819 , H04L1/1867
Abstract: Embodiments of this application provide a polar code retransmission method and apparatus, to reduce retransmission complexity and improve transmission performance. The method includes: determining a first polar channel sequence including N polar channels and reliability of each of the N polar channels; determining, based on a coding parameter for an mth data transmission, a quantity Km of information bits that need to be transmitted during the mth data transmission, where the coding parameter includes at least one of the quantity of information bits and a code rate; determining Km polar channels with highest reliability in the first polar channel sequence; determining Km information bits based on locations, of information bits that need to be transmitted during first m−1 data transmissions, in the first polar channel sequence; and mapping the Km information bits to the Km polar channels for transmission.
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