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公开(公告)号：US20240007220A1
公开(公告)日：2024-01-04
申请号：US18467782
申请日：2023-09-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huazi ZHANG , Rong LI , Jiajie TONG , Xianbin WANG , Jun WANG , Wen TONG
CPC classification number: H04L1/0041 , H04L1/0045 , H04L1/0057 , H03M13/13
Abstract: Embodiments of this application relate to the field of communications technologies, and provide an encoding and decoding method and apparatus, to reduce encoding/decoding complexity and improve encoding/decoding performance. In the method, a transmit device may obtain N to-be-encoded vectors. The transmit device may encode the N to-be-encoded vectors based on a polar code kernel matrix, to obtain N temporary code blocks. The transmit device may respectively perform a mask operation on target bit sequences in an (n+1)th temporary code block to an (n+M)th temporary code block and a source bit sequence segment of an nth temporary code block, to obtain M mask bit sequences. The transmit device may respectively encode the M mask bit sequences based on the polar kernel matrix, to obtain M encoded mask bit sequences. The transmit device may sum the M encoded mask bit sequences and M temporary code blocks, to obtain M first code blocks.
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公开(公告)号：US20230208442A1
公开(公告)日：2023-06-29
申请号：US18170763
申请日：2023-02-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jiajie TONG , Huazi ZHANG , Xianbin WANG , Shengchen DAI , Rong LI , Jun WANG
CPC classification number: H03M13/13 , H03M13/612
Abstract: An encoding method includes obtaining to-be-encoded information and a mother code length N. The to-be-encoded information includes K information bits. The method also includes determining, based on K and N, a set I corresponding to subchannels of the information bits and a set F corresponding to subchannels of frozen bits. Information bits corresponding to subchannel sequence numbers in the set I are distributed in X outer component codes, a code length of each outer component code is B, and the X outer component codes includes a first-type outer component code and a second-type outer component code or the X outer component codes include a first-type outer component code, a second-type outer component code, and one third-type outer component code. Different types of component codes have different code rates. The method additionally includes performing polarization encoding based on the set I and the set F.
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公开(公告)号：US20210185657A1
公开(公告)日：2021-06-17
申请号：US17187364
申请日：2021-02-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huazi ZHANG , Rong LI , Xianbin WANG , Shengchen DAI , Yiqun GE , Yan CHEN , Jun WANG , Jianglei MA
IPC: H04W72/04
Abstract: A resource mapping method and apparatus are described that reduce resource mapping complexity. The method includes an access network device obtaining resource mapping information of at least one terminal, and sending the resource mapping information to the at least one terminal respectively. The resource mapping information indicates a resource element RE to which each of the at least one terminal performs mapping in each RMB in a first resource mapping block RMB set. An RE to which a first terminal performs mapping in each RMB in the first RMB set is determined based on a first interleaved sequence, and the first interleaved sequence is determined based on a base sequence. The first terminal is any one of the at least one terminal, and the first RMB set includes at least one RMB.
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公开(公告)号：US20210021283A1
公开(公告)日：2021-01-21
申请号：US16914775
申请日：2020-06-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yue ZHOU , Rong LI , Hejia LUO , Huazi ZHANG , Ying CHEN
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.
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公开(公告)号：US20200321984A1
公开(公告)日：2020-10-08
申请号：US16855495
申请日：2020-04-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying CHEN , Gongzheng ZHANG , Yunfei QIAO , Rong LI , Huazi ZHANG , Hejia LUO
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. The method includes: pre-storing, by a computing device, at least one mother code sequence, wherein each mother code sequence comprises at least one subsequence and at least one subset, the at least one subsequence and the at least one subset each comprises one or more sequence numbers corresponding to one or more polarized channels, and wherein the one or more sequence numbers in each subsequence are arranged in an ascending order according to reliability of the corresponding one or more polarized channels; determining, by the computing device, a set of information bit sequence numbers from the at least one mother code sequence based on a code length of a target polar code; and performing, by the computing device, polar encoding on information bits based on the set of information bit sequence numbers.
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Patent Agency Ranking
公开(公告)号：US20200153459A1
公开(公告)日：2020-05-14
申请号：US16704859
申请日：2019-12-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Guijie WANG , Rong LI , Jun WANG , Gongzheng ZHANG , Huazi ZHANG
Abstract: This application discloses a polar code-based interleaving method and apparatus, to resolve a problem existing in the prior art that when a code length is relatively long, an implementation process of reading a sequence obtained after random interleaving is relatively complex. The method includes: determining an interleaving matrix based on a target code length M of a polar code; and interleaving, based on the interleaving matrix, encoded bits obtained after encoding of the polar code, to generate interleaved bits.
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公开(公告)号：US20190386778A1
公开(公告)日：2019-12-19
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：US20190326933A1
公开(公告)日：2019-10-24
申请号：US16459008
申请日：2019-07-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huazi ZHANG , Jun WANG , Rong Li , Lingchen HUANG , Jian WANG , Shengchen DAI , Jiajie TONG , Vladimir GRITSENKO , Oleg Feat'evich KURMAEV , Aleksei Eduardovich MAEVSKII
Abstract: A method comprises: obtaining a coded bit sequence by performing PC-polar coding on information bits based on first constructor parameters; and sending the coded bit sequence. A check equation of the first constructor parameters includes a first element representing a check-required information bit position and a second element representing a check bit position, the first element corresponds to a first vector (V1) in a generator matrix for PC-polar codes, the second element corresponds to a second vector (V2) in the generator matrix, and if a first Hamming weight (HW1) of V1 is the same as a second Hamming weight (HW2) of V2, then a third Hamming weight (HW3) of an addition modulo 2 vector is greater than HW1 and greater than HW2, or if HW1 is different from HW2, then HW3 is greater than a smaller one of the HW1 and HW2.
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公开(公告)号：US20190132084A1
公开(公告)日：2019-05-02
申请号：US16231521
申请日：2018-12-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huazi ZHANG , Jian WANG , Rong LI , Rongdao YU , Lu RONG
Abstract: This application discloses a user sequence transmission method, a network device, and a terminal device. The method includes: sending, by a network device, first signaling to a terminal device, where the first signaling includes first information indicating a quantity of user sequences in a first user sequence space, and the user sequences in the first user sequence space include a universal set of user sequences used by the terminal device served by the network device; receiving, by the network device, a first user sequence sent by the terminal device based on the first information; and performing, by the network device, user detection and/or communication parameter estimation based on the first user sequence.
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公开(公告)号：US20250047418A1
公开(公告)日：2025-02-06
申请号：US18926586
申请日：2024-10-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yu CAO , Ming JIA , Huazi ZHANG , Jianglei MA
IPC: H04L1/1607 , H04L1/00
Abstract: Methods and apparatuses for providing feedback in a HARQ scheme are described. A transmission-specific channel quality indicator (CQI) feedback scheme is described. A channel coding-related feedback scheme is also described.
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