公开(公告)号：US12047158B2

公开(公告)日：2024-07-23

申请号：US17707558

申请日：2022-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04B7/185 ,  H04L27/26 ,  H04W74/08 ,  H04W74/0833

CPC classification number: H04B7/18513 ,  H04L27/2607 ,  H04W74/0833

Abstract: The disclosure provides satellite communication methods and related devices. One example method includes generating a random access preamble sequence which includes a cyclic prefix, a sequence part, and a guard interval. The sequence part includes a subsequence A and a subsequence B, or the sequence part includes a subsequence C, and the subsequence C is a time domain superimposed sequence of a subsequence A and a subsequence B. The subsequence A includes at least one preamble symbol, the subsequence B includes at least one preamble symbol, and the subsequence A and the subsequence B are respectively generated by using ZC sequences of different root indexes, a quantity of subsequences A is m, a quantity of subsequences B is m or m−1, and m is a positive integer. The method further includes outputting the random access preamble sequence.

公开(公告)号：US11968640B2

公开(公告)日：2024-04-23

申请号：US17407526

申请日：2021-08-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenlei Xu ,  Jianwei Zhou ,  Zhenjun Jiang ,  Hejia Luo

IPC: H04W56/00 ,  H04W84/06

CPC classification number: H04W56/005 ,  H04W56/0035 ,  H04W56/009 ,  H04W84/06

Abstract: This application provides an example timing advance update method, an example terminal, and an example base station. One example method includes receiving, by a terminal, an updated timing advance TA value and a beam cell identity of a beam cell in which the terminal is located that are sent by a base station. The example method also includes obtaining, by the terminal, corresponding TA compensation information based on the beam cell identity. The example method further includes performing, by the terminal, TA compensation in a TA update period based on the updated TA value and the TA compensation information. The example method also includes sending, by the terminal, uplink data by using a TA value obtained after TA compensation is performed.

公开(公告)号：US20230208514A1

公开(公告)日：2023-06-29

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

CPC classification number: H04B7/2041 ,  H04B7/0639 ,  H04W52/0235

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.