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公开(公告)号：EP3588786A1
公开(公告)日：2020-01-01
申请号：EP17913431.7
申请日：2017-07-13
发明人： JIN, Jie , TONG, Wen , WANG, Jun , PETYUSHKO, Alexander , MAZURENKO, Ivan Leonidovich , ZHANG, Chaolong
IPC分类号： H03M13/11
摘要： This application discloses an encoding method, an apparatus, a communication device, and a communication system. The method includes: encoding an input bit sequence by using a low density parity check LDPC matrix, where the LDPC matrix is obtained based on a base graph, and the base graph includes submatrices A, B, C, D, and E, where the submatrix A is a matrix including m A rows and n A columns, m A and n A are positive integers, 4≤ m A ≤ 7, and n A =10; the submatrix B is a matrix including m A rows and m A columns, and the submatrix B includes a column whose weight is 3 and a submatrix B' having a double diagonal structure; the submatrix D includes m D rows in a matrix F, the matrix F is a matrix including m F rows and ( m A + n A ) columns, m D and m F are positive integers, 0≤ m D ≤ m F , and 35 ≤ m F ≤ 38; the submatrix C is an all zero matrix including m A rows and m D columns; and the submatrix E is an identity matrix including m D rows and m D columns. The encoding method, the apparatus, the communication device, and the communication system in this application can support a requirement for encoding information bit sequences of various lengths.
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公开(公告)号：EP3565151A1
公开(公告)日：2019-11-06
申请号：EP18735983.1
申请日：2018-01-04
发明人： WANG, Jian , WANG, Jun , LI, Rong , ZHANG, Huazi , ZHANG, Chaolong
IPC分类号： H04L1/00
摘要： Embodiments of the present invention provide a control information transmission method and apparatus. The control information transmission method includes: determining, by a network device, N pieces of to-be-jointly-coded downlink control information DCI, where N is an integer greater than or equal to 2; coding, by the network device, the N pieces of DCI in a polar polar coding manner, to obtain one codeword; and mapping, by the network device, the codeword to a time-frequency resource of a downlink control channel for sending. According to the embodiments of the present invention, not only a relatively high coding gain can be obtained, but a relatively low average processing latency on a decoder side can also be obtained.
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公开(公告)号：EP3637647A1
公开(公告)日：2020-04-15
申请号：EP18794478.0
申请日：2018-05-04
发明人： WANG, Jian , ZHANG, Gongzheng , LUO, Hejia , ZHANG, Chaolong , LI, Rong
摘要： This application provides a coding method and apparatus, and a device. The method includes: dividing, by a sending device, a subchannel location sequence number set into at least two mutually exclusive subsets based on an interleaving operation, where a subchannel location in each subset still belongs to the subset and does not belong to another subset after any quantity of interleaving operations are performed; determining, by the sending device, an information bit location set and a frozen bit location set of a to-be-coded polar polar code based on the at least two mutually exclusive subsets; and coding, by the sending device, the to-be-coded polar code based on the information bit location set and the frozen bit location set. The coding method and apparatus, and the device provided in this application can improve communication performance of polar coding.
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公开(公告)号：EP3627710A1
公开(公告)日：2020-03-25
申请号：EP18840500.5
申请日：2018-06-01
发明人： QIAO, Yunfei , ZHANG, Gongzheng , ZHANG, Chaolong , WANG, Jian
摘要： This application provides a polar code encoding method and apparatus, a polar code decoding method and apparatus, and a device. The encoding method includes: sequentially configuring, by a sending device, information bits and first check bits on subchannels in a first subchannel set, and configuring frozen bits on subchannels in a second subchannel set, where the subchannels in the first subchannel set are sorted according to a natural order of serial numbers of the subchannels, and reliability of the subchannels in the first subchannel set is higher than reliability of the subchannels in the second subchannel set; and performing, by the sending device, polarization encoding on bits on the subchannels to obtain an encoded sequence. According to this application, the information bits and the first check bits can be configured on the subchannels that are sorted according to a natural order, without a need to skip one or more subchannels during configuration. In this way, encoding efficiency and decoding efficiency are improved.
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公开(公告)号：EP3595205A1
公开(公告)日：2020-01-15
申请号：EP18763078.5
申请日：2018-03-09
发明人： DAI, Shengchen , LI, Rong , ZHANG, Chaolong , HUANG, Lingchen , LUO, Hejia
IPC分类号： H04L1/00
摘要： This application provides a wireless communication method and device, so as to reduce a probability that a terminal device obtains incorrect configuration information. 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：EP3484054A1
公开(公告)日：2019-05-15
申请号：EP17838465.7
申请日：2017-06-30
发明人： ZHANG, Gongzheng , CHEN, Ying , LI, Rong , ZHANG, Chaolong , HUANGFU, Yourui , ZHANG, Huazi
IPC分类号： H03M13/13
摘要： A rate matching method for a polar code is provided, to improve performance of the polar code. The method includes: encoding, based on an N*N encoding matrix of a polar code, a sequence including N first bits, to generate a mother code including N second bits, where the N first bits are in a one-to-one correspondence with N rows in the encoding matrix in sequence, and the N second bits are in a one-to-one correspondence with N columns in the encoding matrix in sequence; determining N-M to-be-punctured second bits from the N second bits, where at least one first bit in N-M first bits participating in encoding of the N-M second bits belongs to the first M first bits in the N first bits, and the N-M first bits are fixed bits; and puncturing the N-M second bits, to obtain a target polar code including M second bits.
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公开(公告)号：EP3340722A1
公开(公告)日：2018-06-27
申请号：EP16843615.2
申请日：2016-09-05
发明人： ZHANG, Chaolong , WANG, Jian , QIAO, Yunfei
IPC分类号： H04W74/00
摘要： The present invention discloses a data transmission method and apparatus. The method includes: determining a target CTU from multiple candidate CTUs according to a first partial identifier in a terminal device identifier, where the terminal device identifier includes the first partial identifier and a second partial identifier; and sending an uplink data packet to a network device by using the target CTU, where the uplink data packet carries the second partial identifier. According to the data transmission method and apparatus disclosed in the present invention, the first partial identifier in the terminal device identifier can be implicitly indicated, reducing signaling overheads of a system.
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公开(公告)号：EP4376337A2
公开(公告)日：2024-05-29
申请号：EP23210956.1
申请日：2018-04-12
IPC分类号： H04L1/00
CPC分类号： H04L1/0057 , H03M13/116 , H03M13/1185 , H03M13/6362 , H03M13/6516 , H03M13/618 , H03M13/616
摘要： This application discloses an encoding method, an apparatus, a communications device, and a communications system. The method includes: encoding an input bit sequence by using a low density parity check (LDPC) matrix, where the LDPC matrix is obtained based on a lifting factor Z and a base matrix, and the base matrix includes row 0 to row 6 and column 0 to column 16 in one of matrices shown in FIG. 3b-1 to FIG. 3b-8, or the base matrix includes row 0 to row 6 and some columns of column 0 to column 16 in any matrix shown in FIG. 3b-1 to FIG. 3b-8. The encoding method, the apparatus, the communications device, and the communications system in this application can support an encoding requirement for information bit sequences with a plurality of lengths.
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公开(公告)号：EP4064573A1
公开(公告)日：2022-09-28
申请号：EP22150629.8
申请日：2018-04-12
摘要： The application concerns decoding of quasi-cyclic LDPC codes on the basis of a parity check matrix of the code, which is obtained from a base matrix in combination with what is known as modulo-lifting using a set of lifting factors Z being {5, 10, 20, 40, 80, 160, 320}, wherein the base matrix and its associated shift coefficients are as shown in Fig. 3b-3.
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公开(公告)号：EP3605917A1
公开(公告)日：2020-02-05
申请号：EP18787799.8
申请日：2018-04-09
发明人： MA, Liang , ZENG, Xin , WEI, Yuejun , ZHANG, Chaolong , ZHANG, Gongzheng
IPC分类号： H04L1/22
摘要： This application discloses an information processing method and apparatus, a communications device, and a communications system. The method may be used in a communications system in which channel encoding is performed through LDPC encoding, and includes: adding redundancy check bits to a bit sequence A corresponding to first information to obtain a bit sequence C; performing cyclic shift on the bit sequence C based on a shift t and a lifting factor z to obtain a bit sequence C t , where t is an integer greater than or equal to 0, and the shift t is obtained based on second information; and performing low-density parity-check LDPC encoding on the bit sequence C t to obtain a bit sequence D t . In this method, an LDPC code word sequence obtained after processing can reduce a system bandwidth and a resource that are occupied, to meet a performance requirement of a system.
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