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公开(公告)号：US11743854B2
公开(公告)日：2023-08-29
申请号：US17671335
申请日：2022-02-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xiaolu Wang , Hejia Luo , Chenlei Xu , Rong Li , Jun Wang
CPC classification number: H04W56/0045 , H04B7/18513 , H04W56/006
Abstract: Example methods and apparatus for determining a timing advance are described. One example method includes obtaining ephemeris information of a satellite, where the ephemeris information includes coordinates of the satellite and an ephemeris error of the satellite. A timing advance is determined according to a preset rule based on the ephemeris information and location information of a terminal device, where the location information includes coordinates of the terminal device and a positioning error of the terminal device. The preset rule is determined by using a first horizontal distance, a first vertical distance, the ephemeris error, and the positioning error.
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公开(公告)号：US20230262677A1
公开(公告)日：2023-08-17
申请号：US18301521
申请日：2023-04-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianwei Zhou , Yu Wang , Ying Chen , Hejia Luo , Chenlei Xu , Jun Wang
IPC: H04W72/044 , H04W48/08
CPC classification number: H04W72/046 , H04W48/08
Abstract: A bandwidth part switching method, is applicable to a non-terrestrial network (NTN) to implement BWP switching based on multi-color frequency-division multiplexing. In the method, a terminal device may report, in a second BWP to a network device, an index of a first SSB whose signal quality is greater than or equal to a first threshold in one or more SSBs in a first BWP, and switch from the second BWP to a third BWP. The one or more SSBs correspond to at least one BWP other than the first BWP, and the third BWP is in the at least one BWP and corresponds to the first SSB. After receiving the index of the first SSB in the second BWP, the network device determines the third BWP, and performs service data transmission with the terminal device in the third BWP.
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公开(公告)号：US11496238B2
公开(公告)日：2022-11-08
申请号：US17356837
申请日：2021-06-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ying Chen , Rongdao Yu , Yunfei Qiao , Hejia Luo , Rong Li
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.
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公开(公告)号：US11245423B2
公开(公告)日：2022-02-08
申请号：US16787045
申请日：2020-02-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying Chen , Gongzheng Zhang , Hejia Luo , Yunfei Qiao , Rong Li
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.
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公开(公告)号：US11184028B2
公开(公告)日：2021-11-23
申请号：US16569745
申请日：2019-09-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yue Zhou , Huazi Zhang , Rong Li , Hejia Luo , Yunfei Qiao , Jun Wang
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.
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Patent Agency Ranking
公开(公告)号：US11171741B2
公开(公告)日：2021-11-09
申请号：US16685366
申请日：2019-11-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zukang Shen , Yunfei Qiao , Rong Li , Hejia Luo , Shengchen Dai
IPC: H04L1/00
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.
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公开(公告)号：US20210250990A1
公开(公告)日：2021-08-12
申请号：US17244487
申请日：2021-04-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chuili Kong , Gongzheng Zhang , Yunfei Qiao , Hejia Luo
Abstract: A random access method includes sending a random access preamble to a base station on a first time domain resource, obtaining an index value of the first time domain resource, obtaining an index difference between the first time domain resource and a second time domain resource, obtaining an index value of the second time domain resource by adding the index value of the first time domain resource and the index difference, obtaining a random access radio network temporary identifier (RA-RNTI) based on the index value of the second time domain resource, receiving a random access response (RAR) from the base station, and descrambling a cyclic redundancy check (CRC) code of the RAR using the RA-RNTI.
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公开(公告)号：US11075652B2
公开(公告)日：2021-07-27
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：US10892849B2
公开(公告)日：2021-01-12
申请号：US16291921
申请日：2019-03-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ying Chen , Rong Li , Jun Wang , Hejia Luo , Yunfei Qiao
Abstract: A polar code coding method and apparatus are provided. The method includes: determining, based on a target code length corresponding to an information bit sequence, a first mother code length corresponding to the information bit sequence; and performing polar code coding on the information bit sequence based on the first mother code length and mapping relationship information, where the mapping relationship information includes a correspondence between a mother code length and at least one of the following: a transport block size, a construction work point, or a construction sequence. In the method provided in the embodiments of the present invention, polar code coding may be directly performed on the information bit sequence based on at least one of a first transport block size, a first construction work point, or a first construction sequence, so as to reduce coding overheads in a polar code coding process.
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公开(公告)号：US10797826B2
公开(公告)日：2020-10-06
申请号：US16186437
申请日：2018-11-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: A polar encoding and rate matching method is provided, including: determining one or more to-be-deleted rows of a generator matrix, where the generator matrix is determined based on a preset mother code length, and a column in which 1 in the one or more to-be-deleted rows is located includes at least one column with a column weight being 1; deleting, from the one or more to-be-deleted rows, a row corresponding to a polarized channel with lowest reliability, and deleting, from a column in which 1 in the row is located, a column with a column weight being 1, to obtain an after-deletion generator matrix; using the after-deletion generator matrix as a generator matrix to repeat the foregoing steps, until an order of a final generator matrix is equal to a target code length; and performing encoding and rate matching on a to-be-encoded bit based on the final generator matrix.
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