公开(公告)号：US20250088988A1

公开(公告)日：2025-03-13

申请号：US18960651

申请日：2024-11-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xin ZANG ,  Runze ZHOU ,  Yuan WANG

IPC: H04W56/00

Abstract: Embodiments of this application provide a time synchronization method and a communication apparatus. The method includes: An access network device obtains first round-trip time information between the access network device and a terminal device, second round-trip time information between the access network device and a benchmark device, and third round-trip time information between the benchmark device and the terminal device; determines a delay from the access network device to the terminal device based on the obtained t round-trip time information; and sends the delay or an offset between the access network device and the terminal device to the terminal device, where the delay or the offset is used for time synchronization of the terminal device. In this solution, the access network device may accurately determine the offset or the delay, and the terminal device performs time synchronization based on the offset or the delay.

公开(公告)号：US20240389042A1

公开(公告)日：2024-11-21

申请号：US18785607

申请日：2024-07-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xin ZANG ,  Runze ZHOU ,  Yuan WANG

IPC: H04W56/00

Abstract: Embodiments of this application provide a timing method and a communication apparatus. The method includes: A clock management network element receives a clock request message from at least one terminal device. The clock request message includes an identifier of the terminal device and timing precision requested by the terminal device, and the at least one terminal device includes a second terminal device that requests first timing precision. The clock management network element determines that a first clock deployed on a first terminal device meets the first timing precision. The clock management network element sends first timing configuration information to the first terminal device. The first timing configuration information includes an identifier of the second terminal device. This application can optimize a manner in which the first terminal device performs timing for the second terminal device, to implement timing information isolation.