公开(公告)号：US20220263701A1

公开(公告)日：2022-08-18

申请号：US17738863

申请日：2022-05-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianwei ZHOU ,  Chenlei XU ,  Hejia LUO ,  Xiaolu WANG

IPC: H04L27/26 ,  H04W74/08 ,  H04W56/00

Abstract: This application discloses a beam establishment method. A terminal apparatus obtains synchronization signal and PBCH blocks SSBs in a plurality of beams; then determines a target beam in the plurality of beams based on an association relationship between an SSB index and a first random access preamble, where the first random access preamble is determined based on a cyclic shift and/or an order of symbols; and finally sends the random access preamble by using the target beam, to initiate a random access request. A communication device receives the first random access preamble in the random access request sent by the terminal apparatus, and then determines, based on the association relationship, the target beam accessed by the terminal apparatus. According to embodiments of this application, the first random access preamble is determined based on the cyclic shift and/or the order of symbols.

公开(公告)号：US20220263570A1

公开(公告)日：2022-08-18

申请号：US17737840

申请日：2022-05-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu WANG ,  Hejia LUO ,  Chenlei XU ,  Jianwei ZHOU ,  Xueliang SHI

IPC: H04B7/185 ,  H04W56/00 ,  H04J3/06 ,  H04W74/08

Abstract: The disclosure provides satellite communication methods and related devices. One example method includes that a device receives a first common timing advance (TA) parameter and a first common TA change amount calculation parameter, where the first common TA parameter is used to obtain a first common TA, and the first common TA change amount calculation parameter is used to update the first common TA to obtain an updated common TA. The device sends a random access preamble by using the updated common TA.

公开(公告)号：US20220224405A1

公开(公告)日：2022-07-14

申请号：US17707642

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianwei ZHOU ,  Yunfei QIAO ,  Hejia LUO ,  Chenlei XU

IPC: H04B7/185

Abstract: The present disclosure relates to beam handover methods, apparatuses, and communications devices. In one example method, a terminal device receives first indication information sent by a network device, where the first indication information includes a first parameter value of a first beam, and the first parameter value is a compensation amount of a frequency offset of the first beam generated by relative motion between the terminal device and the network device. The terminal device calculates a receive frequency or a transmit frequency of the first beam based on the first parameter value.

公开(公告)号：US20220217600A1

公开(公告)日：2022-07-07

申请号：US17704733

申请日：2022-03-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianwei ZHOU ,  Hejia LUO ,  Chenlei XU ,  Xiaolu WANG

IPC: H04W36/06 ,  H04W56/00 ,  H04W72/04

Abstract: This application provides a satellite communication method and an apparatus. The method includes: receiving, by a terminal device, first information sent by a satellite, where the first information is used to indicate a first timing change rate range; measuring and obtaining, by the terminal device, a first downlink timing change rate; determining a first uplink timing change rate based on the first downlink timing change rate and the first timing change rate range; and performing uplink communication with the satellite based on the first uplink timing change rate. The method can effectively resolve a problem of uplink timing drift and improve uplink performance.

公开(公告)号：US20220217589A1

公开(公告)日：2022-07-07

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

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：US20240031966A1

公开(公告)日：2024-01-25

申请号：US18480124

申请日：2023-10-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ying CHEN ,  Yunfei QIAO ,  Jianwei ZHOU ,  Xiaolu WANG ,  Jun WANG

IPC: H04W56/00

CPC classification number: H04W56/0045 ,  H04W56/009

Abstract: A communication parameter indication method and apparatus is provided. The method includes: obtaining first information, where the first information requests a first parameter of a terminal device, and the first parameter includes at least one of: location information of the terminal device and a parameter related to a timing advance TA that is determined based on a round-trip transmission delay between a first reference point and the terminal device, or a round-trip transmission delay between a network device and the terminal device; sending second information based on the first information, where the second information indicates the first parameter; and obtaining third information indicating a timing offset, the timing offset is for determining a scheduling delay degree of sending information by the terminal device, and is related to at least one of a communication parameter corresponding to a cell in which the terminal device is located and the first parameter.

公开(公告)号：US20230232391A1

公开(公告)日：2023-07-20

申请号：US18187223

申请日：2023-03-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianwei ZHOU ,  Hejia LUO ,  Chenlei XU ,  Xiaolu WANG ,  Jun WANG

IPC: H04W72/044 ,  H04L5/00 ,  H04B7/06

CPC classification number: H04W72/046 ,  H04L5/0091 ,  H04B7/0695

Abstract: This application provides example beam management methods, apparatus, and systems. In one example method, a terminal device can receive indication information from a network device. The terminal device can perform beam switching according to an arrangement order of transmission configuration indicator (TCI) states (TCI-states) in a second TCI list when the indication information is first indication information. Alternatively, the terminal device can perform beam switching according to a first TCI-state in a first TCI list when the indication information is second indication information, wherein the first TCI list comprises a plurality of TCI-states comprising the first TCI-state, and in the first TCI list, beams corresponding to TCI-states after the first TCI-state are to sequentially provide a service for the terminal device.

公开(公告)号：US20230037135A1

公开(公告)日：2023-02-02

申请号：US17961812

申请日：2022-10-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hejia LUO ,  Xiaolu WANG ,  Ying CHEN ,  Jianwei ZHOU ,  Yinggang DU

IPC: H04B7/185 ,  H04W74/08 ,  H04W36/32 ,  H04W12/037

Abstract: A communication method and apparatus are provided, and relate to the field of wireless communication technologies, to resolve a problem in a conventional technology that communication quality during communication between a satellite and a communication apparatus cannot be ensured, and to ensure security of high-accuracy location information of the satellite. In the method, the communication apparatus may perform random access to the satellite based on first location information. The communication apparatus may perform uplink communication with the satellite based on obtained second location information. Accuracy of a location obtained based on the second location information is higher than accuracy of a location obtained based on the first location information. Based on this solution, required accuracy of location information of the satellite is different.

公开(公告)号：US20220377687A1

公开(公告)日：2022-11-24

申请号：US17882060

申请日：2022-08-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yu WANG ,  Jianwei ZHOU ,  Hejia LUO ,  Yunfei QIAO

IPC: H04W56/00

Abstract: A terminal determines a first frequency for accessing the network device Then, the terminal determines at least one second frequency based on the first frequency, where any second frequency is different from the first frequency, and at least two second frequencies are also different. The terminal selects at least two different second frequencies from the first frequency and the at least one second frequency. The terminal separately receives, in a time unit in a period by using the at least two different frequencies, an SSB from the network device. The terminal accesses the network device based on received one or more different SSBs.

公开(公告)号：US20220225332A1

公开(公告)日：2022-07-14

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: H04W72/04

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.