公开(公告)号：US20140314400A1

公开(公告)日：2014-10-23

申请号：US14164999

申请日：2014-01-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Won-Kyoung LEE

IPC: H04L12/703 ,  H04B10/03

CPC classification number: H04L45/28

Abstract: A multi-layer link management device, a multi-layer integrated network transport system, and a multi-layer link management method are provided. The multi-layer link management device according to an embodiment of the present invention establishes a traffic engineering link stack integrated into one control plane in a multi-layer network, performs real-time monitoring and integrative management on link failure and performance for each layer, and notifies a neighbor node of failure and performance degradation states of a multi-layer link and integratedly manages the failure and performance degradation states. Thus, it is possible to enhance reliability of a multi-layer network and monitor failure and performance degradation in real time, thereby allowing quick performance diagnosis and management of a system and shortening a path protection switching time.

Abstract translation: 提供了多层链路管理装置，多层集成网络传输系统和多层链路管理方法。 根据本发明实施例的多层链路管理装置建立了集成在多层网络中的一个控制平面中的流量工程链路堆栈，对每层的链路故障和性能执行实时监控和综合管理， 并向相邻节点通知多层链路的故障和性能退化状态，并综合管理故障和性能降级状态。 因此，可以提高多层网络的可靠性，并实时监控故障和性能下降，从而允许系统的快速性能诊断和管理，并缩短路径保护切换时间。

公开(公告)号：US20150280813A1

公开(公告)日：2015-10-01

申请号：US14578681

申请日：2014-12-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Won-Kyoung LEE

IPC: H04B10/071

CPC classification number: H04B10/071

Abstract: A method of analyzing an optical link fault includes: determining whether a peak is present on an optical time domain reflectometry (OTDR) trace; in response to a determination that there is the peak on the OTDR trace, determining a fault as a reflective fault; in response to a determination that there is no peak on the OTDR trace, determining that the fault is a non-reflective fault; and reporting the optical link fault analysis result.

Abstract translation: 分析光链路故障的方法包括：确定光时域反射（OTDR）迹线上是否存在峰值; 响应于确定OTDR轨迹上的峰值，确定故障为反射故障; 响应于确定OTDR轨迹上没有峰值，确定故障是非反射故障; 并报告光链路故障分析结果。

公开(公告)号：US20140104599A1

公开(公告)日：2014-04-17

申请号：US14049595

申请日：2013-10-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Won-Kyoung LEE ,  Jyung-Chan LEE ,  Seung-Il MYONG

IPC: G01M11/00

CPC classification number: G01M11/3145

Abstract: A method of improving the performance of an optical time domain reflectometer (OTDR) is provided. The method according to an embodiment of the present invention can increase accuracy of a distance of the OTDR through an initial calibration method with respect to the refractive index of an optical fiber, and can accurately detect a fault position and accurately analyze a fault cause through a real-time calibration method with respect to the refractive index of the optical fiber when faults and performance degradation occur.

Abstract translation: 提供了一种提高光时域反射计（OTDR）性能的方法。 根据本发明的实施例的方法可以通过初始校准方法提高OTDR的距离相对于光纤的折射率的精度，并且可以精确地检测故障位置并且通过以下方式准确地分析故障原因 当发生故障和性能下降时，相对于光纤的折射率的实时校准方法。

公开(公告)号：US20140205279A1

公开(公告)日：2014-07-24

申请号：US14054209

申请日：2013-10-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Won-Kyoung LEE ,  Seung-Il MYONG

IPC: H04B10/071

CPC classification number: H04B10/071

Abstract: There are provided a device for monitoring an optical link fault and a method thereof. According to an embodiment of the invention, the device for monitoring an optical link fault and the method thereof apply an optical link fault monitoring signal to an optical link and precisely identify a type of the fault using waveforms of a reflected signal returned from the optical link or a wavelength dependence of reflected signal intensity.

Abstract translation: 提供了一种用于监视光链路故障的装置及其方法。 根据本发明的实施例，用于监视光链路故障的装置及其方法将光链路故障监视信号应用于光链路，并使用从光链路返回的反射信号的波形来精确地识别故障类型 或反射信号强度的波长依赖性。