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：US20230224843A1

公开(公告)日：2023-07-13

申请号：US18182885

申请日：2023-03-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04W56/00

CPC classification number: H04W56/005 ,  H04W56/0015

Abstract: Embodiments of this application provide a timing offset parameter update method, a device, and a system, and relate to the field of communication technologies, to help reduce signaling overheads generated when a network device updates a value of a timing offset parameter. The method includes: A terminal device obtains first information that includes a first reference value and first indication information, where the first indication information indicates an update rule of a timing offset parameter, and the first reference value is an initial value of the timing offset parameter. The terminal device updates a value of the timing offset parameter based on the first information and a timing offset variation, to obtain an updated value of the timing offset parameter, where an absolute value of the timing offset variation is equal to an absolute value of a difference between any two consecutively updated values of the timing offset parameter.

公开(公告)号：US12199804B2

公开(公告)日：2025-01-14

申请号：US17704444

申请日：2022-03-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Rong Li ,  Hejia Luo ,  Bin Wang ,  Jun Wang

IPC: H04L27/26 ,  H04L5/00 ,  H04W4/06

Abstract: Example communication methods and apparatus are described. One example method includes generating a first signal and sending a first signal, where the first signal includes an orthogonal frequency division multiplexing (OFDM) symbol, a first-type cyclic prefix (CP), and a second-type CP. CP resources of the first-type CP include two types of CP resources: a first CP resource and a second CP resource. CP resources of the second-type CP include one type of CP resource, that is, the second CP resource. The first CP resource may be used to carry data that is different from data carried on the OFDM symbol. The second CP resource may be used to carry data that is the same as the data carried on the OFDM symbol.

公开(公告)号：US12166569B2

公开(公告)日：2024-12-10

申请号：US18176642

申请日：2023-03-01

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04B7/204 ,  H04B7/06 ,  H04W52/02

Abstract: This application provides a satellite communication method and apparatus. A terminal obtains a level-1 broadcast signal from a satellite, where a beam status corresponding to the level-1 broadcast signal is an energy saving state, and the level-1 broadcast signal includes synchronization information. The terminal obtains a level-2 broadcast signal from the satellite, where a beam status corresponding to the level-2 broadcast signal is a broadband communication state. The terminal communicates with the satellite based on the level-2 broadcast signal.

公开(公告)号：US12143956B2

公开(公告)日：2024-11-12

申请号：US17825817

申请日：2022-05-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Chenlei Xu ,  Jianwei Zhou ,  Rong Li

IPC: H04W56/00 ,  H04W16/28 ,  H04W36/00 ,  H04W84/06

Abstract: Example communication methods and apparatus are described. In one example method, a terminal receives a first information by using a serving beam, where the first information indicates a delay compensation parameter corresponding to a target beam. The target beam and the serving beam are different beams. The terminal determines, based on a full timing advance and the delay compensation parameter corresponding to the target beam, a differential timing advance corresponding to the target beam.

公开(公告)号：US12108375B2

公开(公告)日：2024-10-01

申请号：US17704555

申请日：2022-03-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04W72/0453 ,  H04W72/20

CPC classification number: H04W72/0453 ,  H04W72/20

Abstract: The disclosure provides transmission methods and apparatuses. One example includes sending control signaling to a terminal device, to indicate the terminal device to send a physical uplink shared channel (PUSCH) on a first frequency band; and receiving the PUSCH sent by the terminal device on the first frequency band. The first frequency band includes at least one guard subcarrier. A quantity of the at least one guard subcarrier is determined based on a Doppler frequency shift of a beam covering the terminal device. The first frequency band is located on a frequency band corresponding to the beam.

公开(公告)号：US12063695B2

公开(公告)日：2024-08-13

申请号：US17706202

申请日：2022-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04W74/0833 ,  H04B7/01 ,  H04W56/00 ,  H04W72/044 ,  H04W74/08 ,  H04W84/06

CPC classification number: H04W74/0841 ,  H04B7/01 ,  H04W56/001 ,  H04W72/046 ,  H04W74/0866 ,  H04W84/06

Abstract: The disclosure provides beam indication methods and apparatuses One example method includes that a terminal device determines first random access information associated with a first synchronization broadcast block (SSB) and associated with a beam parameter of a satellite beam, where the beam parameter is used to distinguish the satellite beam. The terminal sends a preamble to a satellite based on the first random access information. The satellite receives the preamble from the terminal, and determines the first random access information. The satellite determines the first SSB and the beam parameter of the satellite beam that are associated with the first random access information.

公开(公告)号：US20230189200A1

公开(公告)日：2023-06-15

申请号：US18165103

申请日：2023-02-06

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04W64/00 ,  H04B7/185

CPC classification number: H04W64/003 ,  H04B7/1855 ,  H04W84/06

Abstract: This application provides a communication method and apparatus, and relates to the field of communication technologies. According to the method, the terminal device determines a location of an NTN device in an NTN. The method includes: A network device sends system information to the terminal device. The system information includes a location parameter of a non-terrestrial network NTN device, and the system information is used to indicate time information of the location parameter.

公开(公告)号：US20220255620A1

公开(公告)日：2022-08-11

申请号：US17729253

申请日：2022-04-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Rong Li ,  Bin Wang ,  Jun Wang

IPC: H04B7/185 ,  H04W74/08 ,  H04W56/00

Abstract: This disclosure provides satellite communication methods and apparatuses. One example method includes that a terminal device determines a first time offset of a first random access response window based on a distance information between a satellite base station and the ground. Based on the first time offset and the first random access response window, the terminal device receives a random access response sent by the satellite base station.

公开(公告)号：US12218816B2

公开(公告)日：2025-02-04

申请号：US17886739

申请日：2022-08-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Wang ,  Hejia Luo ,  Ying Chen ,  Rong Li ,  Bin Wang

IPC: H04W4/00 ,  H04L43/0864

Abstract: Embodiments of this application provide a timing advance determining method and a communication apparatus, to improve precision of calculating a timing advance (TA) by a terminal, and reduce inter-symbol interference (ISI). The method includes: A first network device determines a first parameter based on a first delay compensation value, where the first delay compensation value is a delay compensation made by the first network device for receiving a signal sent by a terminal, the first parameter indicates a difference between a round-trip delay of a feeder link in a non-terrestrial network NTN and the first delay compensation value, and the difference is used to determine a TA used by the terminal for signal sending; and the first network device sends the first parameter.