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公开(公告)号：US20210328659A1
公开(公告)日：2021-10-21
申请号：US17360529
申请日：2021-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04B7/185
Abstract: A data broadcast method includes obtaining, by a satellite base station, a plurality of pieces of data that are to be broadcast. The plurality of pieces of data are a same type of data including compensation values of Doppler frequency shifts, change rates of Doppler frequency shifts, transmission delays, change rates of transmission delays, timing advances TAs, change rates of TAs, or angles of a plurality of beams that respectively correspond to a plurality of beams generated by the satellite base station. The satellite base station determines reference data and a difference between each piece of data in the plurality of pieces of data and the reference data. The satellite base station sends first indication information and a plurality of pieces of second indication information to a terminal device. The first indication information indicates the reference data.
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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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23.发明申请公开(公告)号：US20210227553A1
公开(公告)日：2021-07-22
申请号：US17215243
申请日：2021-03-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huazi ZHANG , Ming JIA , Rong LI , Jian WANG , Xianbin WANG , Shengchen DAI , Jun WANG , Yiqun GE , Yan CHEN , Jianglei MA
Abstract: A resource mapping method and apparatus and a resource mapping indication method and apparatus are provided to adapt to an interference cancellation function of a receiver. The method is: A network device obtains a mapping mode used for resource mapping during uplink transmission. The network device sends, to a terminal, information indicating the mapping mode. The mapping mode is used to indicate mapping locations of a plurality of modulation symbols in a resource mapping block RMB, the RMB comprises a plurality of resource elements REs, and at least one RE carries at least two modulation symbols.
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公开(公告)号：US20210184786A1
公开(公告)日：2021-06-17
申请号：US17189834
申请日：2021-03-02
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 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：US20210184695A1
公开(公告)日：2021-06-17
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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Patent Agency Ranking
公开(公告)号：US20200244291A1
公开(公告)日：2020-07-30
申请号：US16849643
申请日：2020-04-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Mingmin ZHAO , Gongzheng ZHANG , Chen XU , Rong LI
Abstract: This disclosure provides a data retransmission method and apparatus. The method includes: A transmitting device obtains information to be transmitted for a tth time, where the information to be transmitted for the tth time includes Rt extension locations and information to be transmitted for a (t−1)th time, and the extension locations include Mt information bits and Lt check bits corresponding to the Mt information bits. The transmitting device then performs Polar encoding on the information to be transmitted for the tth time, to obtain a codeword after the Polar encoding, obtains a codeword for (t−1)th retransmission based on the codeword after the Polar encoding, and transmits the codeword for (t−1)th retransmission. A receiving device performs polar decoding after receiving the codeword for (t−1)th retransmission, to obtain a decoding result of codewords for t times of transmission. By performing, on an encoding side, check encoding on the information bits in an extension part, a decoding path can be reduced in a decoding process, thereby greatly reducing decoding complexity, and reducing storage overheads and calculation overheads.
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公开(公告)号：US20200235853A1
公开(公告)日：2020-07-23
申请号：US16749848
申请日：2020-01-22
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：US20200212933A1
公开(公告)日：2020-07-02
申请号：US16811934
申请日：2020-03-06
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shengchen DAI , Lingchen HUANG , Gongzheng ZHANG , Yunfei QIAO , Chen XU , Jun WANG , Rong LI
Abstract: This application provides an encoding method and apparatus in a wireless communications system. 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 the A information bits; and performing polar encoding on the first bit sequence, where L has a value of one of 3, 4, 5, 8, and 16. Based on an improved CRC polynomial, coding satisfying a false alarm rate (FAR) requirement is implemented.
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公开(公告)号：US20200059245A1
公开(公告)日：2020-02-20
申请号：US16661832
申请日：2019-10-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Gongzheng ZHANG , Hejia LUO , Rong LI , Jian WANG , Jun WANG
Abstract: This application provides a polar code transmission method and apparatus. The method includes: transforming a to-be-processed bit sequence at two or more different granularities, where each specific manner at a first granularity is used to implicitly indicate one value in one level of time sequence information, and each specific manner at a second granularity is used to implicitly indicate one value in another level of time sequence information; and sending the transformed (processed) bit sequence, so that different encoded bit sequences can be obtained, and more versions of time sequence information can be implemented, thereby meeting a requirement of transmission in a plurality of levels of time sequences.
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公开(公告)号：US20200014403A1
公开(公告)日：2020-01-09
申请号：US16572163
申请日：2019-09-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying CHEN , Rong LI , Huazi ZHANG , Jian WANG , Jun WANG
Abstract: An encoding method, an encoding apparatus, and a communications apparatus are disclosed. Specifically, the encoding method includes: obtaining a first sequence corresponding to a basic code length N0; determining N to-be-encoded bits, where the N to-be-encoded bits include N2 fixed bits, and N is greater than the basic code length N0; extending the first sequence to obtain a second sequence; determining locations of the N2 fixed bits in the N to-be-encoded bits based on polar channel serial numbers indicated by first N2 elements in the second sequence; and performing polar encoding on the N to-be-encoded bits to obtain encoded bits. The locations of the fixed bits in the N to-be-encoded bits are determined based on the second sequence, and the second sequence is obtained by extending the first sequence corresponding to the basic code length N0.
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