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.

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

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

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.

公开(公告)号：US20200350932A1

公开(公告)日：2020-11-05

申请号：US16929621

申请日：2020-07-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ying CHEN ,  Hejia LUO ,  Gongzheng ZHANG ,  Rong LI ,  Jun WANG

IPC: H03M13/00 ,  H03M13/13 ,  H04L1/00 ,  H04L5/00

Abstract: This application discloses a data transmission method, apparatus, and system. The method includes: generating a to-be-sent bit sequence, where the to-be-sent bit sequence includes one or more bits in a bit sequence having a length of (N−M), where N is a length of a mother code for polar encoding, M is a length of encoded bits obtained after rate matching is performed on a bit sequence having a length of N, N is m raised to the power of an integer, m is a positive integer greater than 1, M is a positive integer, and N

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

IPC: H03M13/39 ,  H03M13/13

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.

公开(公告)号：US20200266834A1

公开(公告)日：2020-08-20

申请号：US16796300

申请日：2020-02-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Gongzheng ZHANG ,  Ying CHEN ,  Yunfei QIAO ,  Yourui HUANGFU ,  Rong LI

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

Abstract: Embodiments of this application provide a method for processing information bits in a wireless communication network. A device obtains a Polar encoded bit sequence, then divide the Polar encoded bit sequence into g groups that are of equal length N/g, wherein g is 32. The device block interleaves the g groups to obtain an interleaved bit sequence according to a sequence S, wherein the sequence S comprises: group numbers of the g groups, wherein a group whose number is 0 is the first element in the sequence S, wherein a group whose number is 12 is the 17th element in the sequence S, wherein a group whose number is 31 is the 32nd element in the sequence S, wherein the S is an integer and output the interleaved bit sequence.

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

IPC: H03M13/27 ,  H03M13/13

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.

公开(公告)号：US20200028524A1

公开(公告)日：2020-01-23

申请号：US16556920

申请日：2019-08-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lingchen HUANG ,  Rong LI ,  Chen XU ,  Gongzheng ZHANG ,  Shengchen DAI

IPC: H03M13/27 ,  H03M13/13 ,  H03M13/09

Abstract: Embodiments of polar encoding/decoding methods and apparatuses are described. CRC encoding is performed on an information block to obtain a CRC encoded block with a length of B, where a CRC length is Lcrc, an information block length is K, and B=K+Lcrc. The CRC encoded block is interleaved. Lpc CRC bits in the interleaved encoded block are located between bits of the information block. Each CRC bit of the Lpc CRC bits is located after all bits checked by using the CRC bit. Lpc is an integer greater than 0 and less than Lcrc. The interleaved encoded block is mapped to information bits. A frozen bit is set to an agreed fixed value. Polar encoding is performed on the information bits and the frozen bit to obtain a polar encoded codeword to improve performance of a CA-polar code.

公开(公告)号：US20200008096A1

公开(公告)日：2020-01-02

申请号：US16566500

申请日：2019-09-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengchen DAI ,  Rong LI ,  Chaolong ZHANG ,  Lingchen HUANG ,  Hejia LUO

IPC: H04W28/04 ,  H04W72/04 ,  H04L27/26 ,  H04L1/00

Abstract: This application provides a wireless communication method and device. The method includes: scrambling, with each piece of configuration information of a plurality of pieces of configuration information for configuring a terminal device, bits that are included in a cyclic redundancy check (CRC) of downlink control information (DCI) and that correspond to each piece of configuration information, to obtain a scrambled sequence, where at least one bit of bits that correspond to each piece of configuration information does not correspond to another piece of configuration information of the plurality of pieces of configuration information; and sending the DCI and the scrambled sequence to the terminal device.

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

IPC: H04L1/00 ,  H03M13/13

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.

公开(公告)号：US20190296857A1

公开(公告)日：2019-09-26

申请号：US16423178

申请日：2019-05-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Vladimir GRITSENKO ,  Aleksei Eduardovich MAEVSKII ,  Hejia LUO ,  Rong LI ,  Jun WANG

IPC: H04L1/00

Abstract: Method and apparatus for transmission and reception with polar codes are provided to support up to 16 permutations or transformation mappings. For example, 16 versions of copies able to be soft-combined for PBCH or any other data channel or control channel are suggested if the mother code length is 256 or 512 or 1024. With the new design, up to 16 different versions can be used to soft combined to improve the performance. Some sequences are provided as examples to support 16 different permutation patterns. The inverse of these sequences also have the feature to support 16 different permutation patterns.