Patents by Inventor Hejia Luo

Hejia Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11303298
    Abstract: Embodiments of this application disclose encoding and decoding methods and apparatus related to the communications. One of the methods includes: obtaining, based on polar code rate matching, a subchannel corresponding to a punctured bit or a shortened bit; determine subchannels corresponding to an information bit and a check frozen bit that are different from the subchannel corresponding to the punctured bit or the shortened bit; determining that a subchannel corresponding to a frozen bit that is different from the subchannels corresponding to the information bit and the check frozen bit and the subchannel corresponding to the punctured bit or the shortened bit; performing, according to the subchannels corresponding to the information bit and the check frozen bit and the subchannel corresponding to the frozen bit, parity check encoding and polar encoding based on the information bit to obtain encoded information; and sending the encoded information.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: April 12, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yue Zhou, Rong Li, Hejia Luo, Huazi Zhang, Ying Chen
  • Patent number: 11303388
    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.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: April 12, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hejia Luo, Yinggang Du, Rong Li, Lingchen Huang, Ying Chen
  • Publication number: 20220109524
    Abstract: This application relates to the field of wireless communications technologies, and discloses an encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the first sequence is same as a second sequence or a subset of the second sequence, the second sequence comprises sequence numbers of Nmax polarized channels, and the second sequence is the sequence shown in Sequence Q11 or Table Q11, K is a positive integer, N is a positive integer power of 2, n is equal to or greater than 5, K?N, Nmax=1024; selecting sequence numbers of K polarized channels from the first sequence; and performing polar code encoding on K the to-be-encoded bits based on the selected sequence numbers of the K polarized channels.
    Type: Application
    Filed: October 1, 2021
    Publication date: April 7, 2022
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Jun Wang, Gongzheng Zhang, Huazi Zhang, Chen Xu, Lingchen Huang, Shengchen Dai, Hejia Luo, Yunfei Qiao, Rong Li, Jian Wang, Ying Chen, Nikita Polianskii, Mikhail Kamenev, Zukang Shen, Yourui HuangFu, Yinggang Du
  • Patent number: 11265101
    Abstract: Embodiments of the present disclosure provide a rate matching method and an apparatus. The method includes performing, by a sending apparatus, encoding using a polar code to obtain a first encoded sequence whose length is N. A sequence number of a polarization channel may range from 0 to N?1. The method includes determining, by the sending apparatus, P1 to-be-punctured bit positions. The method includes performing puncturing at the P1 bit positions in the first encoded sequence to obtain rate-matched encoded bits. The P1 to-be-punctured bit positions are bit positions corresponding to polarization channels 0 to PT1?1, PT1 to 3N/8?1, and/or N/2 to 5N/8?1, PT1 is a threshold of a quantity of to-be-punctured bit positions, and PT1?N/4. The method includes sending the rate-matched encoded bits.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: March 1, 2022
    Assignee: Huawei Technologies Co., Ltd
    Inventors: Ying Chen, Gongzheng Zhang, Hejia Luo, Rong Li, Yue Zhou
  • Patent number: 11258463
    Abstract: A polar code transmission method and apparatus, the method including performing, by a transmit end, polar code encoding on at least one of to-be-encoded bit sequences U to generate an encoded sequence, wherein a length of U is N, and scrambling and interleaving, by the transmit end, the encoded sequence by using a scrambling sequence SX and an interleaving matrix PX.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 22, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hejia Luo, Gongzheng Zhang, Jian Wang, Rong Li, Yourui HuangFu, Huazi Zhang, Ying Chen, Jun Wang
  • Publication number: 20220052896
    Abstract: Embodiments of this application provide a side information transmission method and apparatus. Data to be transmitted by a transmit end includes at least one first data sub-block and at least one second data sub-block. A first modulated signal is obtained based on a first phase rotation factor. A second modulated signal is obtained based on a second phase rotation factor. Side information is generated based on the first phase rotation factor and the second phase rotation factor. The first data sub-block is carried on a first subcarrier, and the side information is also mapped to the first carrier. The first modulated signal corresponding to the at least one first data sub-block, the second modulated signal corresponding to the at least one second data sub-block, and a modulated signal corresponding to the side information are superposed to obtain a to-be-transmitted signal.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Xiaolu Wang, Hejia Luo, Rong Li, Bin Wang, Jun Wang
  • Publication number: 20220053555
    Abstract: This application provides a TA determining method and apparatus for a terminal device. After receiving a TA adjustment parameter sent by an access network device and determining that a TA of the terminal device needs to be adjusted, the terminal device determines a TA scaling factor, a subcarrier spacing parameter, and a first TA, to jointly adjust the first TA to obtain a second TA. A TA adjustment parameter k is added when the terminal device determines the second TA, so that an adjustable range of the TA is larger. Therefore, the TA may be applied to determining the TA of the terminal device when the terminal device communicates with a satellite base station. In this way, the terminal device can adjust the TA when movement of a device is caused by both the terminal device and the satellite base station.
    Type: Application
    Filed: October 28, 2021
    Publication date: February 17, 2022
    Inventors: Ying CHEN, Hejia LUO, Rong LI, Jun WANG
  • Patent number: 11245423
    Abstract: An interleaving method and apparatus are provided, to reduce complexity of implementation processes of polar code interleaving and rate matching. The method includes: obtaining encoded bits after polar code encoding, and sorting the encoded bits based on a priority order of performing a rate matching operation, to obtain a first bit sequence. The first bit sequence includes j subsequences, and j is a positive integer. The method further includes writing the first bit sequence into an interleaver of i rows and j columns. Bits in a column in the interleaver include one of the j subsequences; and reading out bits from the interleaver column by column, until M bits are read. At least two adjacent columns have opposite readout directions, and M is a target code length.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: February 8, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ying Chen, Gongzheng Zhang, Hejia Luo, Yunfei Qiao, Rong Li
  • Publication number: 20220038964
    Abstract: Embodiments of this application disclose cell handover measurement indication methods, a network device, and a terminal, to improve reliability and real-time performance of cell handover. A cell handover measurement indication method includes: A network device calculates a measurement moment of cell handover based on a measurement event and sends a measurement indication. The measurement event is a location relationship between a terminal and the network device, and the measurement indication is used to indicate the terminal to perform cell handover measurement. The measurement indication sent by the network device may be used to notify the measurement moment of cell handover to the terminal.
    Type: Application
    Filed: October 18, 2021
    Publication date: February 3, 2022
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Yu Wang, Hejia Luo, Xian Meng, Yunfei Qiao
  • Patent number: 11239945
    Abstract: A polar code encoding/decoding method in a communications system is provided, including: determining an information bit location set or a frozen bit location set of a polar code based on an interleaving operation or a corresponding de-interleaving operation; and encoding or decoding the polar code based on the determined information bit location set or frozen bit location set.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: February 1, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Aleksei Eduardovich Maevskii, Vladimir Gritsenko, Jian Wang, Hejia Luo, Gongzheng Zhang, Jie Jin
  • Patent number: 11223371
    Abstract: A polar code encoder is configured to: map q bits to q positions of q sub-channels, where q is a positive integer, and the q bits are used to indicate a version of encoded codeword; map K-q information bits to K-q positions for the K-q information bits, K is an integer, K>q; and perform polar encoding over an input vector u0N-1, comprising the q bits and the K-q information bits, with the length of N, N is an integer, N>=K and scramble with scrambling vector over the polar encoded bits, where the scrambling vector is associated to the q sub-channels or the scrambling vector is associated to a special frozen bit which is corresponding to the q sub-channels.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: January 11, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hejia Luo, Rong Li, Vladimir Vitalievich Gritsenko, Aleksei Eduardovich Maevskii, Jun Wang
  • Patent number: 11206048
    Abstract: This application provides a polar encoding and decoding method, a sending device, and a receiving device, to help overcome disadvantages in transmission of medium and small packets, a code rate, reliability, and complexity in the prior art.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: December 21, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ying Chen, Gongzheng Zhang, Yunfei Qiao, Rong Li, Huazi Zhang, Hejia Luo
  • Publication number: 20210392703
    Abstract: This application provides a random access method and an apparatus. The method includes: receiving, by a terminal device, a broadcast signal; and sending, by the terminal device, a random access signal, where a preamble sequence in the random access signal includes K first symbols and Q second symbols, the first symbol and the second symbol are different from each other, K and Q are integers greater than or equal to 1, K+Q=NSEQ, and NSEQ is a quantity of symbols included in the preamble sequence.
    Type: Application
    Filed: August 27, 2021
    Publication date: December 16, 2021
    Inventors: Chenlei Xu, Jianwei Zhou, Hejia Luo, Jun Wang
  • Publication number: 20210392597
    Abstract: This application provides an example timing advance update method, an example terminal, and an example base station. One example method includes receiving, by a terminal, an updated timing advance TA value and a beam cell identity of a beam cell in which the terminal is located that are sent by a base station. The example method also includes obtaining, by the terminal, corresponding TA compensation information based on the beam cell identity. The example method further includes performing, by the terminal, TA compensation in a TA update period based on the updated TA value and the TA compensation information. The example method also includes sending, by the terminal, uplink data by using a TA value obtained after TA compensation is performed.
    Type: Application
    Filed: August 20, 2021
    Publication date: December 16, 2021
    Inventors: Chenlei XU, Jianwei ZHOU, Zhenjun JIANG, Hejia LUO
  • Patent number: 11184028
    Abstract: A coding method, a decoding method, an apparatus, and a device are provided. The method includes: coding, by a sending device, an information bit sequence to obtain a coded bit sequence, where the coded bit sequence includes an information bit, a frozen bit, a CRC check bit, and a frozen check bit; and a value of the frozen check bit and a value of the CRC check bit are obtained by using a same cyclic shift register; performing, by the sending device, polar coding and rate matching on the coded bit sequence to obtain a to-be-sent rate-matched sequence; and sending, by the sending device, the rate-matched sequence. According to the method, time and space for coding calculation and decoding calculation can be effectively reduced, and calculation complexity is reduced.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: November 23, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yue Zhou, Huazi Zhang, Rong Li, Hejia Luo, Yunfei Qiao, Jun Wang
  • Publication number: 20210352524
    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.
    Type: Application
    Filed: July 26, 2021
    Publication date: November 11, 2021
    Inventors: Shengchen DAI, Rong LI, Chaolong ZHANG, Lingchen HUANG, Hejia LUO
  • Patent number: 11171741
    Abstract: Example polar code-based transmission methods and apparatus are provided, to apply polar encoding to a physical broadcast channel (PBCH). One example method includes performing polar encoding on a to-be-encoded first bit sequence by a transmit end to generate an encoded sequence. The transmit end performs a transformation operation on the encoded sequence to obtain a second bit sequence, where the transformation operation includes at least one of scrambling, interleaving, or reordering. The transmit end sends the second bit sequence in M inconsecutive time units, where at least two time intervals between the time units in the M inconsecutive time units are unequal.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: November 9, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zukang Shen, Yunfei Qiao, Rong Li, Hejia Luo, Shengchen Dai
  • Patent number: 11165535
    Abstract: This application relates to the field of wireless communications technologies, and discloses an encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the first sequence is same as a second sequence or a subset of the second sequence, the second sequence comprises sequence numbers of Nmax, polarized channels, and the second sequence is the sequence shown in Sequence Q11 or Table Q11, K is a positive integer, N is a positive integer power of 2, n is equal to or greater than 5, K?N, Nmax=1024; selecting sequence numbers of K polarized channels from the first sequence; and performing polar code encoding on K the to-be-encoded bits based on the selected sequence numbers of the K polarized channels.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: November 2, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jun Wang, Gongzheng Zhang, Huazi Zhang, Chen Xu, Lingchen Huang, Shengchen Dai, Hejia Luo, Yunfei Qiao, Rong Li, Jian Wang, Ying Chen, Nikita Polianskii, Mikhail Kamenev, Zukang Shen, Yourui HuangFu, Yinggang Du
  • Publication number: 20210328659
    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.
    Type: Application
    Filed: June 28, 2021
    Publication date: October 21, 2021
    Inventors: Hejia LUO, Ying CHEN, Jie SHENG, Rong LI
  • Publication number: 20210320748
    Abstract: A data transmission method and a communications device, the method including: determining, by a first communications device, a target data transmission mode, where the target data transmission mode is used to indicate a quantity of times that the first communications device transmits an encoded-bit combination to a second communications device and an encoded-bit combination transmitted each time, the encoded-bit combination transmitted each time may include one encoded bit sequence or a plurality of encoded bit sequences, where the encoded bit sequence is obtained by encoding all or some of K information bits, and K is a positive integer, and sending, by the first communications device, the encoded-bit combination to the second communications device in the target data transmission mode, and receiving, by the second communications device, the encoded-bit combination sent by the first communications device, and decoding the encoded bit sequence included in the encoded-bit combination.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 14, 2021
    Inventors: Ying Chen, Rongdao Yu, Yunfei Qiao, Hejia Luo, Rong Li