公开(公告)号：US09143311B2

公开(公告)日：2015-09-22

申请号：US13739783

申请日：2013-01-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jinrong Yin ,  Sulin Yang ,  Shouwen Liu

IPC: H04J3/06 ,  H04L7/00

CPC classification number: H04L7/0075 ,  H04J3/0638 ,  H04J3/0667

Abstract: The present disclosure provides a time synchronization method, including: acquiring, by a slave device, a first optical fiber transmission delay from a master device to the slave device, and a second optical fiber transmission delay from the slave device to the master device; exchanging a time synchronization signal with the master device, and calculating an initial time offset; adjusting the initial time offset by using the first optical fiber transmission delay and the second optical fiber transmission delay to obtain a corrected time offset; and adjusting a local clock according to the corrected time offset. Embodiments of the present disclosure further provide a corresponding device and system.

Abstract translation: 本公开提供了一种时间同步方法，包括：由从设备获取从主设备到从设备的第一光纤传输延迟，以及从从设备到主设备的第二光纤传输延迟; 与主设备交换时间同步信号，并计算初始时间偏移量; 通过使用第一光纤传输延迟和第二光纤传输延迟来调整初始时间偏移以获得校正的时间偏移; 以及根据校正的时间偏移来调整本地时钟。 本公开的实施例还提供了相应的设备和系统。

公开(公告)号：US20130195443A1

公开(公告)日：2013-08-01

申请号：US13739783

申请日：2013-01-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jinrong Yin ,  Sulin Yang ,  Shouwen Liu

IPC: H04L7/00

CPC classification number: H04L7/0075 ,  H04J3/0638 ,  H04J3/0667

Abstract: The present disclosure provides a time synchronization method, including: acquiring, by a slave device, a first optical fiber transmission delay from a master device to the slave device, and a second optical fiber transmission delay from the slave device to the master device; exchanging a time synchronization signal with the master device, and calculating an initial time offset; adjusting the initial time offset by using the first optical fiber transmission delay and the second optical fiber transmission delay to obtain a corrected time offset; and adjusting a local clock according to the corrected time offset. Embodiments of the present disclosure further provide a corresponding device and system.

Abstract translation: 本公开提供了一种时间同步方法，包括：由从设备获取从主设备到从设备的第一光纤传输延迟，以及从从设备到主设备的第二光纤传输延迟; 与主设备交换时间同步信号，并计算初始时间偏移量; 通过使用第一光纤传输延迟和第二光纤传输延迟来调整初始时间偏移以获得校正的时间偏移; 以及根据校正的时间偏移来调整本地时钟。 本公开的实施例还提供了相应的设备和系统。