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公开(公告)号：US20220158659A1
公开(公告)日：2022-05-19
申请号：US17587425
申请日：2022-01-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengchen DAI , Huazi ZHANG , Xianbin WANG , Lingchen HUANG , Rong LI , Yunfei QIAO
IPC: H03M13/00
Abstract: An encoding method is provided. The method includes: when a first code rate K/Nmax is less than or equal to a code rate threshold Rt, reading a second matrix from a preset code table based on a first matrix, where the first matrix includes a matrix that is read from the preset code table and that corresponds to a maximum supported code length Nmax and Rt; reading K rows and (N−K) columns starting from a preset first location in the second matrix to obtain a third matrix; adding a unit matrix with K rows and K columns to a left side of the third matrix to obtain a generator matrix of an (N, K) linear block code, where K rows and (Nmax−Nmax×Rt) columns of the first matrix in a first direction are consistent with K rows and (Nmax−Nmax×Rt) columns of the second matrix in a second direction.
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公开(公告)号：US20200220648A1
公开(公告)日：2020-07-09
申请号：US16822712
申请日：2020-03-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jian WANG , Lingchen HUANG , Yunfei QIAO , Rong LI
IPC: H04L1/00
Abstract: Example Polar code rate matching methods and apparatus are described. One example method includes determining a first index set corresponding to N to-be-encoded bits. The first index set includes indexes of Z polarized channels on which forced frozen bits are placed. The Z polarized channels are a subset of N polarized channels corresponding to the N to-be-encoded bits, N=2n, Z
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公开(公告)号：US20200092042A1
公开(公告)日：2020-03-19
申请号：US16579532
申请日：2019-09-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lingchen HUANG , Gongzheng ZHANG , Ying CHEN , Yunfei QIAO , Rong LI
Abstract: Embodiments of this application provide a method and an apparatus for constructing a coding sequence. The method includes: storing a reliability sequence corresponding to a basic sequence, where a length of the reliability sequence corresponding to the basic sequence is less than or equal to a length of a reliability sequence corresponding to a mother code sequence; storing a reliability reference sequence, where the reliability reference sequence includes at least one element remaining after the reliability sequence corresponding to the basic sequence is excluded from the reliability sequence corresponding to the mother code sequence; and constructing a coding sequence by using the reliability sequence corresponding to the basic sequence and an element in the reliability reference sequence. During implementation of this application, during storage, only the reliability sequence corresponding to the basic sequence and the reliability reference sequence are stored. Because a sum of the length of the reliability sequence corresponding to the basic sequence and a length of the reliability reference sequence is far less than the length of the original reliability sequence, storage overheads can be reduced.
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公开(公告)号：US20240171307A1
公开(公告)日：2024-05-23
申请号：US18512912
申请日：2023-11-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hejia LUO , Yinggang DU , Rong LI , Lingchen HUANG , Ying CHEN
IPC: H04L1/00
CPC classification number: H04L1/0057 , H04L1/0071
Abstract: Embodiments of this application provide a method for coding in a wireless communication network. A communication device interleave a first bit sequence to obtain a first interleaved sequence having sequence number starting with a sequence number of 0, wherein the first bit sequence comprises bits for indicating timing, wherein the bits for indicating timing comprises a set of bits for indicating synchronization signal block index (SSBI); wherein the set of bits for indicating SSBI are placed in positions indicated by sequence numbers of 2, 3 and 5 in the first interleaved sequence. The devices add d first CRC bits on the first interleaved sequence to obtain a second bit sequence, interleave on the second bit sequence according to an interleave pattern to obtain a second interleaved sequence, and polar encode the second interleaved sequence to obtain the encoded sequence.
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公开(公告)号：US20230056892A1
公开(公告)日：2023-02-23
申请号：US17896298
申请日：2022-08-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Gongzheng ZHANG , Yourui HuangFu , Lingchen HUANG , Ying CHEN , Yunfei QIAO , Rong LI
Abstract: Embodiments of the application provide a method for transmitting data in a wireless communication network. A device of the network receives a bit sequence of K information bits. The device polar codes the bit sequence to obtain a first encoded sequence, wherein a length of the first encoded sequence is N, and N is greater than or equal to K. The device block interleaves the first encoded sequence to obtain an interleaved bit sequence. The device determines a transmission code rate R. When the transmission code rate R is less than the code rate threshold, the device outputs a second bit sequence. The length of the second bit sequence is M, M is smaller than N. The second bit sequence is punctured from the interleaved bit sequence by removing (N-M) bits from beginning of the interleaved bit sequence.
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Patent Agency Ranking
公开(公告)号：US20200059246A1
公开(公告)日：2020-02-20
申请号：US16661931
申请日：2019-10-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying CHEN , Xiaocheng LIU , Lingchen HUANG , Yue ZHOU , Rong LI , Hejia LUO , Jun WANG
Abstract: A polar code coding/decoding method, a sending device, and a receiving device are disclosed. The method includes: selecting, by a sending device, K non-punctured-position sequence numbers as a reference sequence number set based on a quantity K of information bits and a reliability-based order of N polarized channels of a polar code whose code length is N, where a reliability of a polarized channel corresponding to any sequence number in the reference sequence number set is greater than or equal to reliabilities of polarized channels corresponding to remaining (N−K) sequence numbers; determining, by the sending device, an information-bit sequence number set based on a determining condition and the reference sequence number set; and performing, by the sending device, polar coding on to-be-coded bits based on the information-bit sequence number set.
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公开(公告)号：US20200021394A1
公开(公告)日：2020-01-16
申请号：US16582746
申请日：2019-09-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying CHEN , Gongzheng ZHANG , Lingchen HUANG , Rong LI , Huazi ZHANG , Hejia LUO
Abstract: Embodiments of this application provides a communication method in a wireless communication network. A communication device obtains an information bit sequence and obtain a first sequence, wherein the first sequence comprises sequence numbers of N channels ordered in ascending order of channel reliability, wherein N is 1024 and wherein a channel whose sequence number is 0, a channel whose sequence number is 1, and a channel whose sequence number is 2 are ordered in ascending order of channel reliability; then polar encode the information bits based on the first sequence to obtain an encoded bit sequence and output the encoded bit sequence.
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公开(公告)号：US20190334654A1
公开(公告)日：2019-10-31
申请号：US16506765
申请日：2019-07-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hejia LUO , Yinggang DU , Rong LI , Lingchen HUANG , Ying CHEN
IPC: H04L1/00
Abstract: Embodiments of this application provide a method for coding in a wireless communication network. A communication device interleave a first bit sequence to obtain a first interleaved sequence having sequence number starting with a sequence number of 0, wherein the first bit sequence comprises bits for indicating timing, wherein the bits for indicating timing comprises a set of bits for indicating synchronization signal block index (SSBI); wherein the set of bits for indicating SSBI are placed in positions indicated by sequence numbers of 2, 3 and 5 in the first interleaved sequence. The devices add d first CRC bits on the first interleaved sequence to obtain a second bit sequence, interleave on the second bit sequence according to an interleave pattern to obtain a second interleaved sequence, and polar encode the second interleaved sequence to obtain the encoded 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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公开(公告)号：US20210314087A1
公开(公告)日：2021-10-07
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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