公开(公告)号：US12101669B2

公开(公告)日：2024-09-24

申请号：US17702958

申请日：2022-03-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yu Wang ,  Yunfei Qiao ,  Rong Li ,  Jianwei Zhou ,  Hejia Luo

IPC: H04W36/00 ,  H04B7/185 ,  H04W48/12

CPC classification number: H04W36/0055 ,  H04B7/18513 ,  H04W36/0061 ,  H04W48/12

Abstract: The technology of this application relates to an information transmission method, an apparatus, and a system. The method includes user equipment receives first indication information sent by a first network device, where the first indication information includes a polarization method of a target cell, and the user equipment performs cell measurement on the target cell based on the polarization method of the target cell. According to the method, the user equipment can obtain the polarization method of the target cell before entering the target cell. In this way, when performing cell handover and reselection, the user equipment can enable, based on the polarization method of the target cell, only a port corresponding to the polarization method of the target cell, to receive a satellite signal, and perform cell measurement on the target cell, to complete cell handover and reselection procedures.

公开(公告)号：US20240235662A9

公开(公告)日：2024-07-11

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.

公开(公告)号：US20240205962A1

公开(公告)日：2024-06-20

申请号：US18540088

申请日：2023-12-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chuili Kong ,  Gongzheng Zhang ,  Yunfei Qiao ,  Hejia Luo

IPC: H04W74/00 ,  H04L1/00 ,  H04W56/00 ,  H04W74/0833 ,  H04W76/11

CPC classification number: H04W74/008 ,  H04L1/0061 ,  H04W56/0045 ,  H04W56/009 ,  H04W74/0833 ,  H04W76/11

Abstract: A random access method includes sending a random access preamble to a base station on a first time domain resource, obtaining an index value of the first time domain resource, obtaining an index difference between the first time domain resource and a second time domain resource, obtaining an index value of the second time domain resource by adding the index value of the first time domain resource and the index difference, obtaining a random access radio network temporary identifier (RA-RNTI) based on the index value of the second time domain resource, receiving a random access response (RAR) from the base station, and descrambling a cyclic redundancy check (CRC) code of the RAR using the RA-RNTI.

公开(公告)号：US20230403069A1

公开(公告)日：2023-12-14

申请号：US18458161

申请日：2023-08-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yu Wang ,  Hejia Luo ,  Yunfei Qiao ,  Ying Chen ,  Xiaolu Wang ,  Rong Li

IPC: H04B7/185 ,  H04W64/00 ,  H04W72/0446

CPC classification number: H04B7/18513 ,  H04B7/18519 ,  H04W64/00 ,  H04W72/0446

Abstract: In a communication method, to meet a requirement of a positioning service, a first communication apparatus obtains data to be processed, and determines a first frame structure that includes a communication time period and a positioning time period. A first switching time period is included between the communication time period and the positioning time period, a 1st time-domain symbol occupied by the first switching time period is consecutive to a last time-domain symbol occupied by the communication time period, and a last time-domain symbol occupied by the first switching time is consecutive to a 1st time-domain symbol occupied by the positioning time period. The first communication apparatus then processes the data based on the first frame structure.

公开(公告)号：US11770159B2

公开(公告)日：2023-09-26

申请号：US17882200

申请日：2022-08-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ying Chen ,  Jianwei Zhou ,  Hejia Luo ,  Xiaolu Wang ,  Rong Li ,  Jun Wang

IPC: H04W56/00 ,  H04B7/01 ,  H04L5/00

CPC classification number: H04B7/01 ,  H04L5/0051 ,  H04W56/0035 ,  H04W56/0045

Abstract: This application discloses a frequency compensation method and apparatus, to improve performance of frequency compensation. The method includes: determining a change rate of a Doppler frequency shift value based on a weighted change rate of a change rate of a timing advance TA, determining the Doppler frequency shift value based on the change rate of the Doppler frequency shift value, and performing frequency compensation based on the determined Doppler frequency shift value; or determining a frequency offset value based on the Doppler frequency shift value with reference to pre-compensation and based on a reference signal, to further determine a frequency offset value, and performing frequency compensation based on the frequency offset value.

公开(公告)号：US11743854B2

公开(公告)日：2023-08-29

申请号：US17671335

申请日：2022-02-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Chenlei Xu ,  Rong Li ,  Jun Wang

IPC: H04W56/00 ,  H04B7/185

CPC classification number: H04W56/0045 ,  H04B7/18513 ,  H04W56/006

Abstract: Example methods and apparatus for determining a timing advance are described. One example method includes obtaining ephemeris information of a satellite, where the ephemeris information includes coordinates of the satellite and an ephemeris error of the satellite. A timing advance is determined according to a preset rule based on the ephemeris information and location information of a terminal device, where the location information includes coordinates of the terminal device and a positioning error of the terminal device. The preset rule is determined by using a first horizontal distance, a first vertical distance, the ephemeris error, and the positioning error.

公开(公告)号：US20230262677A1

公开(公告)日：2023-08-17

申请号：US18301521

申请日：2023-04-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianwei Zhou ,  Yu Wang ,  Ying Chen ,  Hejia Luo ,  Chenlei Xu ,  Jun Wang

IPC: H04W72/044 ,  H04W48/08

CPC classification number: H04W72/046 ,  H04W48/08

Abstract: A bandwidth part switching method, is applicable to a non-terrestrial network (NTN) to implement BWP switching based on multi-color frequency-division multiplexing. In the method, a terminal device may report, in a second BWP to a network device, an index of a first SSB whose signal quality is greater than or equal to a first threshold in one or more SSBs in a first BWP, and switch from the second BWP to a third BWP. The one or more SSBs correspond to at least one BWP other than the first BWP, and the third BWP is in the at least one BWP and corresponds to the first SSB. After receiving the index of the first SSB in the second BWP, the network device determines the third BWP, and performs service data transmission with the terminal device in the third BWP.

公开(公告)号：US11496238B2

公开(公告)日：2022-11-08

申请号：US17356837

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ying Chen ,  Rongdao Yu ,  Yunfei Qiao ,  Hejia Luo ,  Rong Li

IPC: H04L1/00 ,  H04B7/185

Abstract: A data transmission method and a communications device, the method including: determining, by a first communications device, a target data transmission mode, where the target data transmission mode is used to indicate a quantity of times that the first communications device transmits an encoded-bit combination to a second communications device and an encoded-bit combination transmitted each time, the encoded-bit combination transmitted each time may include one encoded bit sequence or a plurality of encoded bit sequences, where the encoded bit sequence is obtained by encoding all or some of K information bits, and K is a positive integer, and sending, by the first communications device, the encoded-bit combination to the second communications device in the target data transmission mode, and receiving, by the second communications device, the encoded-bit combination sent by the first communications device, and decoding the encoded bit sequence included in the encoded-bit combination.

公开(公告)号：US11245423B2

公开(公告)日：2022-02-08

申请号：US16787045

申请日：2020-02-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: An interleaving method and apparatus are provided, to reduce complexity of implementation processes of polar code interleaving and rate matching. The method includes: obtaining encoded bits after polar code encoding, and sorting the encoded bits based on a priority order of performing a rate matching operation, to obtain a first bit sequence. The first bit sequence includes j subsequences, and j is a positive integer. The method further includes writing the first bit sequence into an interleaver of i rows and j columns. Bits in a column in the interleaver include one of the j subsequences; and reading out bits from the interleaver column by column, until M bits are read. At least two adjacent columns have opposite readout directions, and M is a target code length.

公开(公告)号：US11184028B2

公开(公告)日：2021-11-23

申请号：US16569745

申请日：2019-09-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yue Zhou ,  Huazi Zhang ,  Rong Li ,  Hejia Luo ,  Yunfei Qiao ,  Jun Wang

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

Abstract: A coding method, a decoding method, an apparatus, and a device are provided. The method includes: coding, by a sending device, an information bit sequence to obtain a coded bit sequence, where the coded bit sequence includes an information bit, a frozen bit, a CRC check bit, and a frozen check bit; and a value of the frozen check bit and a value of the CRC check bit are obtained by using a same cyclic shift register; performing, by the sending device, polar coding and rate matching on the coded bit sequence to obtain a to-be-sent rate-matched sequence; and sending, by the sending device, the rate-matched sequence. According to the method, time and space for coding calculation and decoding calculation can be effectively reduced, and calculation complexity is reduced.