公开(公告)号：US20200351009A1

公开(公告)日：2020-11-05

申请号：US16885244

申请日：2020-05-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Gongzheng Zhang ,  Hejia Luo ,  Rong Li ,  Ying Chen ,  Yunfei Qiao

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

Abstract: Embodiments of the application provide a method for rate matching in a wireless communication network. A device obtains K information bits and a target code length M of a polar code, determines, according to a minimum value of a set of values, a mother code length N1, polar encodes the K information bits to obtain an encoded sequence of N1 bits, obtains a target sequence of M bits from the N1 bit encoded sequence, and outputs the M-bit target sequence. When the mother code length N1 is larger than the target code length M, (N1−M) bits of the encoded sequence are punctured or shortened from the N1 bit encoded sequence.

公开(公告)号：US10812215B2

公开(公告)日：2020-10-20

申请号：US16218719

申请日：2018-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ying Chen ,  Hejia Luo ,  Rong Li

IPC: H04W56/00 ,  H04L1/00 ,  H03M13/13 ,  H03M13/00 ,  H04L5/00 ,  H04L1/08 ,  H04L1/18

Abstract: Embodiments of the present disclosure provide a data transmission method, including: performing polar code coding on to-be-coded bits, to obtain a mother code, where a code length of the mother code is related to K and Mi, i=1, 2, . . . , K, K is a quantity of sending times, Mi is a length of bits sent at an ith time, and K and Mi are positive integers greater than 1; performing rate matching on the mother code, to obtain to-be-sent bits, where a quantity of the to-be-sent bits is a sum of lengths of bits sent at K times; and sending Mi to-be-sent bits at the ith time.

公开(公告)号：US10693590B2

公开(公告)日：2020-06-23

申请号：US16506765

申请日：2019-07-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hejia Luo ,  Yinggang Du ,  Rong Li ,  Lingchen Huang ,  Ying Chen

IPC: H04L1/00

Abstract: Embodiments of this application provide a method for coding in a wireless communication network. A communication device interleave a first bit sequence to obtain a first interleaved sequence having sequence number starting with a sequence number of 0, wherein the first bit sequence comprises bits for indicating timing, wherein the bits for indicating timing comprises a set of bits for indicating synchronization signal block index (SSBI); wherein the set of bits for indicating SSBI are placed in positions indicated by sequence numbers of 2, 3 and 5 in the first interleaved sequence. The devices add d first CRC bits on the first interleaved sequence to obtain a second bit sequence, interleave on the second bit sequence according to an interleave pattern to obtain a second interleaved sequence, and polar encode the second interleaved sequence to obtain the encoded sequence.

公开(公告)号：US20200028619A1

公开(公告)日：2020-01-23

申请号：US16585467

申请日：2019-09-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Aleksei Eduardovich Maevskii ,  Vladimir Gritsenko ,  Jian Wang ,  Hejia Luo ,  Gongzheng Zhang ,  Jie Jin

IPC: H04L1/00 ,  H04L12/18

Abstract: A polar code encoding/decoding method in a communications system is provided, including: determining an information bit location set or a frozen bit location set of a polar code based on an interleaving operation or a corresponding de-interleaving operation; and encoding or decoding the polar code based on the determined information bit location set or frozen bit location set.

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.

公开(公告)号：US12267162B2

公开(公告)日：2025-04-01

申请号：US18512912

申请日：2023-11-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hejia Luo ,  Yinggang Du ,  Rong Li ,  Lingchen Huang ,  Ying Chen

IPC: H04L1/00

Abstract: Embodiments of this application provide a method for coding in a wireless communication network. A communication device interleave a first bit sequence to obtain a first interleaved sequence having sequence number starting with a sequence number of 0, wherein the first bit sequence comprises bits for indicating timing, wherein the bits for indicating timing comprises a set of bits for indicating synchronization signal block index (SSBI); wherein the set of bits for indicating SSBI are placed in positions indicated by sequence numbers of 2, 3 and 5 in the first interleaved sequence. The devices add d first CRC bits on the first interleaved sequence to obtain a second bit sequence, interleave on the second bit sequence according to an interleave pattern to obtain a second interleaved sequence, and polar encode the second interleaved sequence to obtain the encoded sequence.

公开(公告)号：US20240389151A1

公开(公告)日：2024-11-21

申请号：US18787707

申请日：2024-07-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hejia Luo ,  Xiaolu Wang ,  Yu Wang ,  Jun Wang

IPC: H04W74/0816 ,  H04W8/22 ,  H04W56/00 ,  H04W74/08

Abstract: This application provides a communication method and a communication apparatus, to reduce TA error accumulation caused by an open-loop adjustment manner, reduce intersymbol interference of an uplink signal, and improve stability of a communication system. In the method, a terminal device receives and obtains first configuration information, where the first configuration information includes time domain information of a first transmission opportunity; the terminal device sends a first signal, where the first signal is used to determine TA information; the terminal device obtains the TA information; and the terminal device determines a TA between the terminal device and a network device based on the TA information, where the TA is used for data transmission after a time domain start location corresponding to the time domain information of the first transmission opportunity.

公开(公告)号：US20240365200A1

公开(公告)日：2024-10-31

申请号：US18767646

申请日：2024-07-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yu Wang ,  Hejia Luo ,  Rong Li ,  Jun Wang

IPC: H04W36/32 ,  H04W36/08

CPC classification number: H04W36/322 ,  H04W36/083

Abstract: A communication method and apparatus are provided. The method includes: A terminal device obtains first information, where the first information is used for mobility management of ascending-orbit and descending-orbit cells, and the first information is related to a latitude location. The terminal device performs the mobility management based on the first information. According to the method, in a scenario of ascending-orbit and descending-orbit cells in a satellite network, mobility management does not need to be frequently performed with frequency switching of ascending and descending orbits. In this way, efficiency of the mobility management of the terminal device can be improved, and system signaling overheads can also be reduced.

公开(公告)号：US12119972B2

公开(公告)日：2024-10-15

申请号：US17706291

申请日：2022-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianwei Zhou ,  Chenlei Xu ,  Hejia Luo ,  Jun Wang

IPC: H04L27/26 ,  H04W16/28 ,  H04W84/06

CPC classification number: H04L27/26025 ,  H04L27/2607 ,  H04W16/28 ,  H04W84/06

Abstract: Example signal transmission methods based on satellite communication and apparatus are described. One example method includes: obtaining, by a communication device, carrier attribute information corresponding to a target carrier used to transmit an orthogonal frequency division multiplexing (OFDM) symbol. The carrier attribute information of the target carrier includes subcarrier spacing. The communications device determines a cyclic prefix (CP) length of the OFDM symbol based on the carrier attribute information of the target carrier and a preset correspondence between carrier attribute information and the OFDM symbol. The CP is used to carry first data. The first data is data in the OFDM symbol.

公开(公告)号：US20240137111A1

公开(公告)日：2024-04-25

申请号：US18400101

申请日：2023-12-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingwei Zhang ,  Tianhang Yu ,  Hejia Luo ,  Shengchen Dai ,  Yunfei Qiao ,  Rong Li ,  Jun Wang

IPC: H04B7/185

CPC classification number: H04B7/18532

Abstract: This application discloses a NB-IoT-based communication method and an apparatus, to evolve a NB-IoT communication technology into an NTN. The method is as follows: A terminal device generates an uplink signal, including a superframe which includes a synchronization sequence located in first duration of the superframe and a data frame located in second duration which is after the first duration, the synchronization sequence successively includes a first sequence repeated Ni times and a second sequence repeated N2 times, the second sequence is obtained by multiplying the first sequence by −1, a part of consecutive sequences of the synchronization sequence are used as a first synchronization reference sequence that is obtained based on the second sequence repeated N2 times and one or more first sequences that are sorted from back to front in the first sequence repeated N1 times. The terminal device sends the uplink signal to a network device.