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公开(公告)号：US20200067534A1
公开(公告)日：2020-02-27
申请号：US16673118
申请日：2019-11-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lingchen Huang , Huazi Zhang , Rong Li , Gongzheng Zhang , Chen Xu
Abstract: An encoding method and apparatus are provided. The method by a transmit end includes: performing check encoding on to-be-encoded information to obtain a check encoding codeword that comprises K information bits and J check bits; performing an interleaving operation on the check encoding codeword with an interleaving sequence including J subsequences, and an ith subsequence includes a position index of an element 1 in an intermediate result vector Ti and a value of (K+i), where 1≤i≤J, i is an integer, Ti=(˜M)&(Vi), M=M|(Vi), M is a masked vector, Vi is a column vector of a checking part matrix P, P is a submatrix of a generator matrix G for check encoding, ˜ represents a bit-by-bit NOT operation, & represents a bit-by-bit AND operation, and | represents a bit-by-bit OR operation; and performing polar encoding on a check encoding codeword obtained after the interleaving operation.
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公开(公告)号：US20190260392A1
公开(公告)日：2019-08-22
申请号：US16391327
申请日：2019-04-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huazi Zhang , Rong Li , Gongzheng Zhang , Chen Xu
Abstract: Embodiments of the application provide a polar coding method for communicating information in a wireless network. Information bits are encoded using a polar code process to obtain a polar-coded bit sequence. A rate matched bit sequence is output based on the polar-coded bit sequence. The rate matched bit sequence includes a quantity M of bits from the polar-coded bit sequence, and the M bits from the polar-coded bit sequence correspond to M channel indexes in a channel index sequence S. The channel index sequence S is obtained based on a puncturing/shortening proportion P′ and a prestored channel index sequence S′. Channel indexes in the prestored channel index sequence S′ are sorted by channel reliability or channel capacity, and a sorting order of the M channel indexes in the channel index sequence S is the same as a sorting order of the channel indexes in the prestored channel index sequence S′.
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公开(公告)号：US20190215720A1
公开(公告)日：2019-07-11
申请号：US16352796
申请日：2019-03-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Rong Li , Yunpei Qiao , Huazi Zhang
CPC classification number: H04W28/06 , H03M13/09 , H03M13/13 , H04L1/00 , H04L1/0009 , H04L1/001 , H04L69/22 , H04W72/046
Abstract: Embodiments of this application provide a channel encoding method for use by a communication device. The communication device obtains a quantity K of information bits, and determines a load size of a channel for transmitting the K information bits. The load size of the channel is N bits, where N≥K, N=2n, and n is a positive integer. The communication device performs a polar encoding process on the K information bits, to obtain a polar code sequence that includes N bits. The N-bit polar code sequence is transmitted using the channel, without rate matching. Because a quantity of coded bits obtained after the polar encoding is equal to a load size of a channel, no rate matching process is required. This reduces encoding overheads of a channel. Complexity and latency of channel encoding are greatly reduced, and performance loss associated with the rate matching operation is avoided.
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公开(公告)号：US20190207720A1
公开(公告)日：2019-07-04
申请号：US16298901
申请日：2019-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Rong Li , Guijie Wang , Gongzheng Zhang , Jian Wang , Jun Wang
CPC classification number: H04L1/1825 , H03M13/13 , H04L1/0041 , H04L1/0057 , H04L1/1819 , H04L1/1867
Abstract: Embodiments of this application provide a polar code retransmission method and apparatus, to reduce retransmission complexity and improve transmission performance. The method includes: determining a first polar channel sequence including N polar channels and reliability of each of the N polar channels; determining, based on a coding parameter for an mth data transmission, a quantity Km of information bits that need to be transmitted during the mth data transmission, where the coding parameter includes at least one of the quantity of information bits and a code rate; determining Km polar channels with highest reliability in the first polar channel sequence; determining Km information bits based on locations, of information bits that need to be transmitted during first m−1 data transmissions, in the first polar channel sequence; and mapping the Km information bits to the Km polar channels for transmission.
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公开(公告)号：US20190116002A1
公开(公告)日：2019-04-18
申请号：US16214147
申请日：2018-12-10
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Chen Xu , Gongzheng Zhang , Rong Li , Huazi Zhang , Lingchen Huang
CPC classification number: H04L1/0043 , H04L1/0068 , H04L1/0071 , H04L1/0072 , H04L67/2842 , H04W72/1231
Abstract: Embodiments of the application provide a method and device for polar code rate matching in a wireless communication network. A device of the network receives a bit sequence of K information bits. The device polar codes the bit sequence to obtain N encoded bits. The device interleaves the encoded bits to obtain N interleaved bits and then stores the N interleaved bits into cyclic cache. The device sequentially outputs M bits of the N interleaved bits from the cyclic cache according to a rate matching manner, wherein the rate matching manner is one of shortening, puncturing or repetition. When the rate matching manner is puncturing, the (N−M+1)th bit to the Nth bit of the interleaved bit sequence are output from the cyclic cache.
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Patent Agency Ranking
公开(公告)号：US20180146474A1
公开(公告)日：2018-05-24
申请号：US15860512
申请日：2018-01-02
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Hejia Luo , Rong Li , Guangzhu Zeng
IPC: H04W72/04
CPC classification number: H04W72/0413 , H04W72/044
Abstract: The present invention discloses an uplink data transmission method and device. The method includes: receiving, by a network device, a control symbol sent by a terminal device by using a control time-frequency resource, where the control symbol carries control information, the control information is used to indicate a data encoding scheme used by the terminal device, the control time-frequency resource belongs to a transmission resource including a data time-frequency resource, and the control time-frequency resource and the data time-frequency resource are different; performing demodulation and decoding processing on the control symbol to obtain the control information; and performing, according to the control information, decoding processing on a data symbol sent by the terminal device by using the data time-frequency resource, to obtain uplink data.
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公开(公告)号：US20180097580A1
公开(公告)日：2018-04-05
申请号：US15717745
申请日：2017-09-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huazi Zhang , Gongzheng Zhang , Rong Li , Jun Wang , Wen Tong , Yiqun Ge
IPC: H04L1/00
Abstract: Embodiments of this disclosure enhance the error detection performance of parallel polar encoding by cross-concatenating parity bits between segments of information bits transmitted over different sets of sub-channels. In one embodiment, a first segment of information bits is transmitted over a first set of sub-channels, and at least a second segment of information bits, and a masked parity bit, are transmitted over a second set of sub-channels. A value of the masked parity bit is equal to a bitwise combination of a first parity bit computed from the first segment of information bits and a second parity bit computed from the second segment of information bits. The bitwise combination may be a bitwise AND, a bitwise OR, or a bitwise XOR of the respective parity bits.
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公开(公告)号：US12279215B2
公开(公告)日：2025-04-15
申请号：US17736501
申请日：2022-05-04
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying Chen , Yunfei Qiao , Hejia Luo , Yinggang Du , Rongdao Yu , Rong Li , Jun Wang
Abstract: The present disclosure relates to power control methods and apparatuses. In one example method, a first uplink transmit power for a terminal device communicating with a source network device is adjusted, based on a first parameter, to obtain a second uplink transmit power, where the second uplink transmit power is used to communicate with a target network device in a handover process.
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公开(公告)号：US20250088311A1
公开(公告)日：2025-03-13
申请号：US18957049
申请日：2024-11-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xianbin Wang , Huazi Zhang , Kangjian Qin , Jiajie Tong , Rong Li , Jun Wang
IPC: H04L1/00
Abstract: This application relates to the field of communication technologies, and discloses an encoding method, a decoding method, and an apparatus. The method includes: performing polar encoding on an information bit sequence based on a target code length E, to determine an encoded bit sequence, where the polar encoding includes N first bit positions and N second bit positions that correspond to a polarization transformation matrix; the N second bit positions include a system bit position set A and a non-system bit position set MA, and the N first bit positions include a frozen bit position set B and a non-frozen bit position set MB.
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公开(公告)号：US20250080268A1
公开(公告)日：2025-03-06
申请号：US18951683
申请日：2024-11-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Kangjian Qin , Huazi Zhang , Xianbin Wang , Xiaoyan Bi , Rong Li , Jun Wang
IPC: H04L1/00
Abstract: A communication method and a communication apparatus are provided. The method includes: a first device first checks a first bit sequence based on a cyclic redundancy check (CRC) code, to obtain a second bit sequence; then divides the second bit sequence into P bit sequences; and generates Q codewords based on the P bit sequences, and sends the Q codewords to a second device through P transport layers. P represents a quantity of transport layers of the first device, P is greater than or equal to 2, and Q is an integer greater than or equal to 2. The first device first checks the first bit sequence based on the CRC code, and then divides the second bit sequence into the P bit sequences, that is, performs code rate allocation.
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