公开(公告)号：US09490926B2

公开(公告)日：2016-11-08

申请号：US14083561

申请日：2013-11-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bup-Joong Kim ,  Tae-Sik Cheung ,  Bheom-Soon Joo ,  Jong-Hyun Lee

IPC: G06F1/12 ,  H04J3/06 ,  H04N21/43

CPC classification number: H04J3/0697 ,  H04J3/0667 ,  H04N21/4302

Abstract: A processor time synchronization apparatus and method in a data communication system which includes a plurality of processors and line interfaces. The processor time synchronization apparatus includes a first local processor configured to recognize a time difference between an external device and the system based on a time message exchanged with the external device, and synchronize time between the external device and the system, and a second local processor configured to receive time information from the first local processor that has been time-synchronized with the external device, the time information containing the time difference between the external device and the system, and synchronize the first local processor with a system's internal time using the received time information.

Abstract translation: 一种包括多个处理器和线路接口的数据通信系统中的处理器时间同步装置和方法。 处理器时间同步装置包括：第一本地处理器，被配置为基于与外部设备交换的时间消息来识别外部设备与系统之间的时间差，并且同步外部设备与系统之间的时间;以及第二本地处理器 被配置为从与所述外部设备时间同步的所述第一本地处理器接收时间信息，所述时间信息包含所述外部设备和所述系统之间的时间差，并且使用所接收到的所述第一本地处理器与系统的内部时间同步 时间信息。

公开(公告)号：US09515871B2

公开(公告)日：2016-12-06

申请号：US14013617

申请日：2013-08-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae-Ub Kim ,  Tae-Sik Cheung ,  Jeong-Dong Ryoo

IPC: H04L12/24 ,  H04L12/703

CPC classification number: H04L41/0659 ,  H04L45/28

Abstract: An apparatus and method for protection switching are disclosed. The protection switching method in accordance with an example of the present disclosure is capable of smoothly processing a protection switching while preventing a data path mismatch occurring in the protection switching in a case in which a forced switching command (FS), which is a passive command, and a signal failure (SF) of a protection path occur at both end nodes, respectively, when a linear protection switching is performed by use of a protection state coordination message in a packet network or a packet transport network.

Abstract translation: 公开了一种用于保护切换的装置和方法。 在作为被动命令的强制切换命令（FS）的情况下，根据本公开的示例的保护切换方法能够平滑地处理保护切换，同时防止在保护切换中发生的数据路径不匹配 并且当通过在分组网络或分组传输网络中使用保护状态协调消息来执行线性保护切换时，分别在两端节点处发生保护路径的信号故障（SF）。