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公开(公告)号：US10972130B2
公开(公告)日：2021-04-06
申请号：US16521605
申请日：2019-07-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chaolong Zhang , Lingchen Huang , Hejia Luo , Rong Li , Jun Wang
Abstract: An encoding method, an encoding apparatus, a decoding method, and a decoding apparatus are provided. The encoding method includes: determining a size of a shift matrix based on a length of an information sequence and a length of an identifier sequence; constructing a check matrix based on the size of the shift matrix and a base matrix; and performing low-density parity-check LDPC encoding on the information sequence and the identifier sequence based on the check matrix. The identifier sequence is a non-all-zero sequence. Because the encoded codeword includes information of the identifier sequence, a receive device can identify whether information corresponding to the encoded codeword is addressed to the receive device, thereby improving information processing efficiency in the transmission.
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公开(公告)号：US10965322B2
公开(公告)日：2021-03-30
申请号：US16689816
申请日：2019-11-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jian Wang , Huazi Zhang , Rong Li
Abstract: A polar code encoding method and apparatus are provided, to improve accuracy of reliability sorting of polar channels. The method is: determining a sorted sequence used to encode to-be-encoded bits, where the sorted sequence is used to represent reliability sorting of N polar channels, N is a mother code length of a polar code, and N is a positive integer power of 2; and performing polar code encoding on the to-be-encoded bits by using the sorted sequence, to obtain encoded bits.
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公开(公告)号：US10951356B2
公开(公告)日：2021-03-16
申请号：US16586385
申请日：2019-09-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengchen Dai , Huazi Zhang , Rong Li , Yunfei Qiao , Yue Zhou
Abstract: Embodiments of this application provide a method for processing information bits. A communication device obtains K information bits and a code length M. The code length M is a length of an output sequence resulting from processing the information bits. The communication device generates an N-bit bit sequence that includes the K information bits and one or more parity check bits, encodes the bit sequence using a polar encoding formula to obtain an N-bit encoded sequence, rate matches the encoded sequence to obtain the output sequence, modulates the rate matched sequence to obtain output sequence and outputs the output sequence. When M−K>192, in the bit sequence, one of the parity check bits is placed in a bit position that is determined according to reliabilities of the bit positions in the bit sequence for placing the K information bits and the one or more parity check bits.
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公开(公告)号：US10924210B2
公开(公告)日：2021-02-16
申请号：US16558285
申请日：2019-09-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying Chen , Rong Li , Huazi Zhang , Hejia Luo , Gongzheng Zhang
Abstract: Embodiments provide a polar code encoding and decoding method in a communications system. Under the method, a basic quantized sequence can be obtained. The basic quantized sequence includes a quantized value used to represent reliability corresponding to a polarized subchannel. A target quantized sequence based on the basic quantized sequence can also be obtained. A relative magnitude relationship between elements in the target quantized sequence is nested with a relative magnitude relationship between elements in the basic quantized sequence. K largest quantized values in the target quantized sequence can be determined based on a non-fixed bit length K and polarized subchannels corresponding to the K largest quantized values can be used as a non-fixed bit position set. Polar code encoding or decoding can be performed based on the non-fixed bit position set.
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公开(公告)号：US10892850B2
公开(公告)日：2021-01-12
申请号：US16265224
申请日：2019-02-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: A method and an apparatus for carrying identification information are disclosed, to extend a quantity of bit positions that can represent identification information. The method includes determining, by a base station, bit locations that can be used to carry identification information in to-be-coded bits, where the bit locations that can be used to carry the identification information include locations of fixed bits, the identification information is used to identify a terminal, and the fixed bits are used by the terminal to perform error correction in a decoding process, adding, by the base station, the identification information to the bit locations, and encoding, by the base station in a polar code encoding mode, the to-be-coded bits that carry the identification information, and sending an encoded polar code to the terminal.
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Patent Agency Ranking
公开(公告)号：US20200351009A1
公开(公告)日：2020-11-05
申请号：US16885244
申请日：2020-05-27
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Gongzheng Zhang , Hejia Luo , Rong Li , Ying Chen , Yunfei Qiao
Abstract: Embodiments of the application provide a method for rate matching in a wireless communication network. A device obtains K information bits and a target code length M of a polar code, determines, according to a minimum value of a set of values, a mother code length N1, polar encodes the K information bits to obtain an encoded sequence of N1 bits, obtains a target sequence of M bits from the N1 bit encoded sequence, and outputs the M-bit target sequence. When the mother code length N1 is larger than the target code length M, (N1−M) bits of the encoded sequence are punctured or shortened from the N1 bit encoded sequence.
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公开(公告)号：US10812215B2
公开(公告)日：2020-10-20
申请号：US16218719
申请日：2018-12-13
Applicant: Huawei Technologies Co., Ltd.
Abstract: Embodiments of the present disclosure provide a data transmission method, including: performing polar code coding on to-be-coded bits, to obtain a mother code, where a code length of the mother code is related to K and Mi, i=1, 2, . . . , K, K is a quantity of sending times, Mi is a length of bits sent at an ith time, and K and Mi are positive integers greater than 1; performing rate matching on the mother code, to obtain to-be-sent bits, where a quantity of the to-be-sent bits is a sum of lengths of bits sent at K times; and sending Mi to-be-sent bits at the ith time.
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公开(公告)号：US20200322081A1
公开(公告)日：2020-10-08
申请号：US16824658
申请日：2020-03-19
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Jian Wang , Huangping Jin , Shengchen Dai , Rong Li , Yinggang Du , Jun Wang , Yiqun Ge
Abstract: The application provides method for communicating channel state information (CSI) in a communication network. The method is as follows: An apparatus determines whether a length of CSI is less than a preset length; and adds a padding bit to the CSI when determining that the length of the CSI is less than the preset length, where a length of CSI obtained by adding the padding bit is consistent with the predetermined length. The CSI obtained by adding the padding bit is communicated in the communication network.
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公开(公告)号：US20200295867A1
公开(公告)日：2020-09-17
申请号：US16892731
申请日：2020-06-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huazi Zhang , Jiajie Tong , Rong Li , Jun Wang , Wen Tong , Yiqun Ge , Xiaocheng Liu
Abstract: Embodiment techniques map parity bits to sub-channels based on their row weights. In one example, an embodiment technique includes polar encoding, with an encoder of the device, information bits and at least one parity bit using the polar code to obtain encoded data, and transmitting the encoded data to another device. The polar code comprises a plurality of sub-channels. The at least one parity bit being placed in at least one of the plurality of sub-channels. The at least one sub-channel is selected from the plurality of sub-channels based on a weight parameter.
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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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