公开(公告)号：US20230024329A1

公开(公告)日：2023-01-26

申请号：US17836563

申请日：2022-06-09

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Pusik PARK

IPC: H04J3/06 ,  H04W56/00

Abstract: An apparatus and method for supporting a precision time synchronization protocol of a stealth clock type are provided. The method may be performed by a stealth clock follower device and may include transmitting a sync message received from a neighbor device to an end-follower device, receiving a delay-request message from the end-follower device, and updating a residence time in a correction field of the received delay-request message. The method may also include transmitting the updated delay-request message to a leader device, receiving a delay-response message from the leader device, and performing time synchronization based on a time of the leader device by using an ingress time of the sync message, an egress time of the updated delay-request message, and time information contained in the sync message and the delay response-message. The method may further include transmitting the delay-response message to the end-follower device for time-synchronization.