公开(公告)号：US10601543B2

公开(公告)日：2020-03-24

申请号：US16540086

申请日：2019-08-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jian Wang ,  Huangping Jin ,  Shengchen Dai ,  Rong Li ,  Yinggang Du ,  Jun Wang ,  Yiqun Ge

IPC: H04L12/28 ,  H04L1/00 ,  H04B7/06 ,  H04J1/16

Abstract: The application provides manner for communicating channel state information (CSI) in a communication network. A preset length is used for equalizing lengths of CSI to be reported. The preset length is determined based on a quantity of CSI-reference signal (RS) ports. A communication device determines whether a total length of one or more indication information items to be included in the CSI is less than the preset length. If the total length of the one or more indication information items to be included in the CSI is less than the preset length, the communication device adds one or more padding bits, to obtain a CSI bit sequence including the one or more indication information items and the one or more padding bits. A total length of the CSI bit sequence is consistent with the preset length. The communication device then outputs the CSI bit sequence.

公开(公告)号：US10594439B2

公开(公告)日：2020-03-17

申请号：US16118740

申请日：2018-08-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lingchen Huang ,  Shengchen Dai ,  Chen Xu ,  Yunfei Qiao ,  Rong Li

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/09 ,  H03M13/13 ,  H03M13/29

Abstract: This application provides an encoding method and apparatus in wireless communications between a network device and a terminal. The method includes: performing CRC encoding on A to-be-encoded information bits based on a CRC polynomial, to obtain a first bit sequence, where the first bit sequence includes L CRC bits and A information bits, L=11; and performing polar encoding on the first bit sequence. Based on an improved CRC polynomial, encoding satisfying an FAR requirement is implemented.

公开(公告)号：US20200067536A1

公开(公告)日：2020-02-27

申请号：US16673581

申请日：2019-11-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hejia Luo ,  Gongzheng Zhang ,  Jian Wang ,  Rong Li ,  Yourui HuangFu ,  Huazi Zhang ,  Ying Chen ,  Jun Wang

IPC: H03M13/27 ,  H03M13/13 ,  H03M13/00

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.

公开(公告)号：US20200021392A1

公开(公告)日：2020-01-16

申请号：US16579867

申请日：2019-09-24

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Chen Xu ,  Rong Li ,  Gongzheng Zhang ,  Yue Zhou ,  Lingchen Huang

IPC: H04L1/00

Abstract: Embodiments of this application provide an information processing method and a coding apparatus. An information bit sequence includes a K-bit information block. The information bit sequence is to be processed into an encoded bit sequence with a target code length M, M>1024. For a given code rate R, when the length K of the information block is greater than a preset threshold, the information bit sequence is segmented into two or more segments. Each segment is polar encoded into an encoded subsequence. The encoded subsequence has a length that equals to a mother code length Ni, and i=1, 2, . . . , p. Each of the p encoded subsequences is rate matched to obtain a rate-matched encoded subsequence. A rate-matched encoded subsequence i of the p rate-matched encoded subsequences has a code length Mi. The p rate-matched encoded subsequences are concatenated into an encoded bit sequence which has a code length M.

公开(公告)号：US10484130B2

公开(公告)日：2019-11-19

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 ,  H03M13/13 ,  H03M13/09

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.

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

IPC: H03M13/13 ,  H04L1/00 ,  H03M13/00

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.

公开(公告)号：US10447432B2

公开(公告)日：2019-10-15

申请号：US16354194

申请日：2019-03-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengchen Dai ,  Huazi Zhang ,  Rong Li ,  Yunfei Qiao ,  Yue Zhou

IPC: H04L1/00 ,  H03M13/00

Abstract: Embodiments of this application provide a method for processing information bits in a wireless communication network. A communication device obtains K information bits and a code length M. The code length M is a length of an output sequence resulting from processing the information bits. The communication device generates an N-bit bit sequence that includes the K information bits and one or more parity check bits, encodes the bit sequence using a polar encoding formula to obtain an N-bit encoded sequence, rate matches the encoded sequence to obtain the output sequence, and outputs the output sequence. When M−K>192, in the bit sequence, one of the parity check bits is placed in a bit position that is determined according to reliabilities of the bit positions in the bit sequence for placing the K information bits and the one or more parity check bits.

公开(公告)号：US20190280814A1

公开(公告)日：2019-09-12

申请号：US16423197

申请日：2019-05-28

Applicant: HUAWEI TECHNOLOGIES CO.,LTD

Inventor： Chen Xu ,  Gongzheng Zhang ,  Rong Li ,  Huazi Zhang ,  Lingchen Huang

IPC: H04L1/00 ,  H04W72/12 ,  H04L29/08

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 obtains K information bits. The device generates a to-be-encoded sequence having a length N bits. The to-be-encoded sequence includes the K information bits and L frozen bits. The L frozen bits are placed in L bit positions of the to-be-encoded sequence. The L bit positions are determined according to a rate match manner which is either puncturing or shortening. The device polar encodes the to-be-encoded sequence to obtain the encoded sequence. The device interleaves the encoded sequence to obtain an interleaved sequence and then stores the interleaved sequence into a cyclic cache. The device sequentially outputs M bits of the interleaved sequence from the cyclic cache according to the rate matching manner.

公开(公告)号：US10389485B2

公开(公告)日：2019-08-20

申请号：US16110908

申请日：2018-08-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yue Zhou ,  Yinggang Du ,  Rong Li

IPC: H03M13/00 ,  H04L1/00 ,  H03M13/09 ,  H03M13/13 ,  H03M13/29

Abstract: Embodiments of this application provide an encoding and decoding method and device in wireless communications between network devices and user equipment. The encoding method includes: obtaining, by a transmit end, a post-polar-encoding data length corresponding to to-be-encoded data; segmenting, by the transmit end, the to-be-encoded data into at least one code block based on the post-encoding data length and a preset threshold; and performing, by the transmit end, polar encoding on each code block, and transmitting encoded data to a receive end. The embodiments of this application avoid a data transmission performance loss caused by an excessive quantity of segments.

公开(公告)号：US10341052B2

公开(公告)日：2019-07-02

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

IPC: H04L1/00 ,  H04L29/08 ,  H04W72/12

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.