公开(公告)号：US20230344450A1

公开(公告)日：2023-10-26

申请号：US18138702

申请日：2023-04-24

Applicant: ZTE Corporation

Inventor： Liguang LI ,  Jun XU ,  Jin XU

IPC: H03M13/11 ,  H03M13/03 ,  H03M13/00 ,  H04L1/00

CPC classification number: H03M13/1168 ,  H03M13/036 ,  H03M13/618 ,  H03M13/6516 ,  H04L1/0003

Abstract: A quasi-cyclic LDPC coding and decoding method and apparatus, and an LDPC coder and decoder. The method includes: determining from a mother basis matrix set a basis matrix used for low density parity check (LDPC) coding (S202), wherein the basis matrix used for LDPC coding includes a first-type element and a second-type element, the first-type element corresponds to an all-zero square matrix, the second-type element corresponds to a matrix obtained by means of a cyclic shift of a unit matrix according to a value of the second-type element, and dimensions of the all-zero square matrix and the unit matrix are equal; and performing LDPC coding on an information sequence to be coded according to the basis matrix used for LDPC coding, and/or performing LDPC decoding on a data sequence to be decoded according to the basis matrix used for LDPC coding (S204).

公开(公告)号：US20220158758A1

公开(公告)日：2022-05-19

申请号：US17588056

申请日：2022-01-28

Applicant: ZTE Corporation

Inventor： Liguang LI ,  Jun XU ,  Jin XU

IPC: H04L1/00

Abstract: Provided are a data encoding method and device, a storage medium, and a processor. The method includes: obtaining data to be sent; performing quasi-cyclic low-density parity check (LDPC) encoding on the data to be sent to obtain an LDPC codeword sequence, and interleaving the LDPC codeword sequence to obtain an interleaved LDPC codeword sequence; performing cyclic bit selection on the interleaved LDPC codeword sequence from a starting position to obtain a rate-matched codeword sequence, where the starting position is determined according to a predetermined parameter; and sending the rate-matched codeword sequence. The solution above resolves the problem in the related art of unstable transmission after performing quasi-cyclic LDPC encoding on data to be transmitted, and achieves stable transmission after the quasi-cyclic LDPC encoding.

公开(公告)号：US20220085830A1

公开(公告)日：2022-03-17

申请号：US17486652

申请日：2021-09-27

Applicant: ZTE Corporation

Inventor： Liguang LI ,  Jun XU ,  Jin XU

IPC: H03M13/11 ,  H03M13/03 ,  H03M13/00 ,  H04L1/00

Abstract: A quasi-cyclic LDPC coding and decoding method and apparatus, and an LDPC coder and decoder. The method includes: determining from a mother basis matrix set a basis matrix used for low density parity check (LDPC) coding (S202), wherein the basis matrix used for LDPC coding includes a first-type element and a second-type element, the first-type element corresponds to an all-zero square matrix, the second-type element corresponds to a matrix obtained by means of a cyclic shift of a unit matrix according to a value of the second-type element, and dimensions of the all-zero square matrix and the unit matrix are equal; and performing LDPC coding on an information sequence to be coded according to the basis matrix used for LDPC coding, and/or performing LDPC decoding on a data sequence to be decoded according to the basis matrix used for LDPC coding (S204).

公开(公告)号：US20210050930A1

公开(公告)日：2021-02-18

申请号：US16989761

申请日：2020-08-10

Applicant: ZTE Corporation

Inventor： Liguang LI ,  Jun XU ,  Zhisong ZUO ,  Hao WU ,  Yu XIN ,  Luanjian BIAN ,  Jin XU

IPC: H04L1/00 ,  H04W28/06

Abstract: Provided are a data communication processing method and device. The method includes: acquiring a modulation order and a target code rate; calculating an intermediate number Ninfo of information bits at least according to a total number of resource elements, the modulation order and the target code rate; quantizing the intermediate number Ninfo of the information bits to obtain the quantized intermediate number N′info; determining a transport block size (TBS) according to the quantized intermediate number N′info.

公开(公告)号：US20170366299A1

公开(公告)日：2017-12-21

申请号：US15541031

申请日：2015-07-30

Applicant: ZTE CORPORATION

Inventor： Liguang LI ,  Jun XU ,  Jin XU

IPC: H04L1/00 ,  H04L27/26 ,  H04W28/04

CPC classification number: H04L1/0041 ,  H04L1/004 ,  H04L1/0061 ,  H04L5/00 ,  H04L27/2602 ,  H04W28/04

Abstract: Disclosed are a data packet processing method and apparatus in an OFDMA system, and a storage medium. The method includes: performing code block segmentation on a source data packet to obtain d data blocks; respectively adding a CRC sequence to the d data blocks; respectively performing error correction coding; grouping the d data blocks on which the error correction coding is performed to obtain a information data packets; performing packet coding on the a information data packets to obtain b check data packets; performing constellation mapping modulation to obtain a first modulation symbol sequence with a length of k1 corresponding to the a information data packets and a second modulation symbol sequence with a length of k2 corresponding to the b check data packets; mapping the first and the second modulation symbol sequences to Mofdm1 continuous OFDM symbols and Mofdm2 continuous OFDM symbols according to time orders respectively for sending.

公开(公告)号：US20240389094A1

公开(公告)日：2024-11-21

申请号：US18787778

申请日：2024-07-29

Applicant: ZTE Corporation

Inventor： Mengzhu CHEN ,  Liguang LI ,  Jun XU ,  Jin XU

IPC: H04W72/1263 ,  H04W52/02 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/23 ,  H04W76/28

Abstract: Methods, systems, and devices for an adaptive parameter configuration in wireless communication are described. A wireless communication method is provided to comprise updating configuration parameters of a user device based on one or more messages including at least one of a parameter update indication, a parameter update inquiry, a parameter set, or a parameter index set.

公开(公告)号：US20230081469A1

公开(公告)日：2023-03-16

申请号：US17971006

申请日：2022-10-21

Applicant: ZTE Corporation

Inventor： Liguang LI ,  Jun Xu ,  Zhisong Zuo ,  Hao Wu ,  Yu Xin ,  Luanjian Bian ,  Jin Xu

IPC: H04L1/00 ,  H04W28/06

Abstract: Provided are a data communication processing method and device. The method includes: acquiring a modulation order and a target code rate; calculating an intermediate number Ninfo of information bits at least according to a total number of resource elements, the modulation order and the target code rate; quantizing the intermediate number Ninfo of the information bits to obtain the quantized intermediate number N′info; determining a transport block size (TBS) according to the quantized intermediate number N′info.

公开(公告)号：US20220158658A1

公开(公告)日：2022-05-19

申请号：US17566846

申请日：2021-12-31

Applicant: ZTE CORPORATION

Inventor： Liguang LI ,  Jun XU ,  Jin XU

IPC: H03M13/25 ,  H03M13/11 ,  H03M13/27 ,  H03M13/00

Abstract: Methods and Apparatus for processing data encoded by low density parity check (LDPC) in a communication system are disclosed herein. In one embodiment, a method performed by a first node is disclosed. The method comprises: encoding an information bit sequence based on an LDPC coding scheme to obtain an encoded bit sequence; generating a master bit sequence based on the encoded bit sequence; selecting a subset of the master bit sequence according to a rate matching rule to obtain a rate matched bit sequence; interleaving the rate matched bit sequence according to a predetermined index sequence to obtain a to-be-transmitted bit sequence; and transmitting the to-be-transmitted bit sequence to a second node.

公开(公告)号：US20170324428A1

公开(公告)日：2017-11-09

申请号：US15509489

申请日：2015-03-30

Applicant: ZTE CORPORATION

Inventor： Liguang LI ,  Jun XU ,  Jin XU ,  Zhifeng YUAN

IPC: H03M13/29 ,  H04L1/00 ,  H03M13/11 ,  H03M13/15 ,  H04L1/20

CPC classification number: H03M13/2906 ,  H03M13/1102 ,  H03M13/1515 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/0066 ,  H04L1/0076 ,  H04L1/0083 ,  H04L1/203

Abstract: A packet processing method and device are disclosed. The method includes: performing code block segmentation on a source packet to obtain a sub-packets; performing error correction encoding on each sub-packet respectively, or performing error correction encoding after respectively adding a CRC sequence to each sub-packet to obtain a error correction encoding sub-packets; performing network encoding on the a error correction encoding sub-packet to obtain b check sub-packets; and performing bit selection operation on the a error correction encoding sub-packets and the b check sub-packets respectively to collectively form an encoded packet; herein a and b are integers greater than 0.

公开(公告)号：US20170230058A1

公开(公告)日：2017-08-10

申请号：US15120126

申请日：2014-08-25

Applicant: ZTE CORPORATION

Inventor： Jun XU ,  Liguang LI ,  Zhifeng YUAN ,  Jin XU ,  Kaibo TIAN

IPC: H03M13/11 ,  H03M13/00

CPC classification number: H03M13/116 ,  H03M13/036 ,  H03M13/1137 ,  H03M13/114 ,  H03M13/118 ,  H03M13/616 ,  H03M13/6502 ,  H03M13/6566

Abstract: An encoding method, decoding method, encoding device and decoding device for structured LDPC codes. The method includes: determining a basic matrix used for encoding, which includes K0 up-and-down adjacent pairs; and according to the basic matrix and an expansion factor corresponding to the basic matrix, performing an LDPC encoding operation of obtaining a codeword of Nb×z bits according to source data of (Nb−Mb)×z bits, herein z is the expansion factor, and z is a positive integer which is greater than or equal to 1. The provided technical solution is applicable to the encoding and decoding of the structured LDPC, thereby realizing the encoding and decoding of LDPC at the high pipeline speed.