公开(公告)号：US08929201B2

公开(公告)日：2015-01-06

申请号：US13625308

申请日：2012-09-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jeong-dong Ryoo ,  Taesik Cheung

IPC: G01R31/08 ,  H04L29/14 ,  H04L12/707 ,  H04L12/703 ,  H04L12/939 ,  H04L1/22

CPC classification number: H04L69/40 ,  H04L1/22 ,  H04L45/22 ,  H04L45/28 ,  H04L49/557

Abstract: A protection switching unit and a method of performing protection switching of the protection switching unit are provided. The method includes steps of detecting a fault that has occurred at a working path of a network; opening a first switch that is connected to the working path and closing a second switch that is connected to the protection path of the network; and maintaining a connection state of the first switch and the working path and a connection state of the second switch and the protection path, when a fault that has occurred at the working path is restored.

Abstract translation: 提供保护切换单元和执行保护切换单元的保护切换的方法。 该方法包括检测在网络的工作路径上发生的故障的步骤; 打开连接到工作路径并关闭连接到网络的保护路径的第二交换机的第一交换机; 并且当恢复在工作路径发生的故障时，保持第一交换机和工作路径的连接状态以及第二交换机和保护路径的连接状态。

公开(公告)号：US11171874B2

公开(公告)日：2021-11-09

申请号：US16570404

申请日：2019-09-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yeoncheol Ryoo ,  Jeong-dong Ryoo ,  Taesik Cheung

IPC: H04L12/841 ,  H04L12/947 ,  H04L12/911 ,  H04L12/835 ,  H04L12/823

Abstract: Disclosed are methods lossless traffic forwarding using distributed delay offset matching. The lossless traffic forwarding method includes calculating a delay offset between a first forwarding path between a transmitting node and a receiving node and a second forwarding path between the transmitting node and the receiving node, and controlling a buffer resource by an extent of the delay offset to delay packets to be forwarded on the first forwarding path.

公开(公告)号：US10237121B2

公开(公告)日：2019-03-19

申请号：US15294705

申请日：2016-10-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeong-dong Ryoo ,  Taesik Cheung ,  Kyung Gyu Chun

IPC: H04L12/46 ,  H04L29/08 ,  H04L12/701 ,  H04L12/725 ,  H04L12/24 ,  H04L12/703 ,  H04L12/721 ,  H04L12/26

Abstract: A linear protection switching-based domain connecting method includes determining, by a protection interconnecting node, a user traffic transceiving path based on information on a presence or absence of defect in working paths and protection paths, generating working path control information and protection path control information based on information on the determined user traffic transceiving path and the information on the presence or absence of the defect in the protection paths, and transmitting the generated working path information to the working interconnecting node, and connecting two paths among the protection paths, and the connection path based on the protection path control information.

公开(公告)号：US08988982B2

公开(公告)日：2015-03-24

申请号：US13649708

申请日：2012-10-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Daeub Kim ,  Jeong-dong Ryoo ,  Taesik Cheung

IPC: H04L12/24 ,  H04L12/707 ,  H04L12/26 ,  H04L12/703 ,  H04L12/753 ,  H04L12/761

CPC classification number: H04L45/22 ,  H04L43/0817 ,  H04L45/16 ,  H04L45/28 ,  H04L45/48

Abstract: A method of performing protection switching in a network including a first node and a plurality of second nodes that are connected to the first node is provided. The first node counts the number of obstacles that have occurred in a plurality of paths that are connected between the plurality of second nodes, and if the counted number is smaller than a predetermined threshold value, the first node performs protection switching per leaf. Alternatively, if the counted number is equal to or larger than a predetermined threshold value, the first node performs protection switching per tree.

Abstract translation: 提供了一种在包括连接到第一节点的第一节点和多个第二节点的网络中执行保护倒换的方法。 第一节点对连接在多个第二节点之间的多个路径中发生的障碍物的数量进行计数，并且如果计数的数量小于预定的阈值，则第一节点对每个叶片执行保护切换。 或者，如果计数的数量等于或大于预定阈值，则第一节点对每个树进行保护切换。

公开(公告)号：US09124502B2

公开(公告)日：2015-09-01

申请号：US13755788

申请日：2013-01-31

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwang-Koog Lee ,  Jeong-dong Ryoo

IPC: H04L12/22 ,  H04L12/801 ,  H04L12/729 ,  H04L12/733 ,  H04L12/721 ,  H04L12/437 ,  H04L12/42

CPC classification number: H04L47/12 ,  H04L12/437 ,  H04L45/122 ,  H04L45/124 ,  H04L45/125 ,  H04L2012/421

Abstract: An apparatus of determining blocking in an Ethernet ring network sets blocking with respect to each of the plurality of links in an Ethernet ring network, and determines one of the plurality of links as a link to be blocked by using traffic request amounts of a plurality of service flows with respect to the respective links set to be blocked.

Abstract translation: 以太网环网中确定​​阻塞的装置针对以太网环网中的多个链路中的每一个设置阻塞，并且通过使用多个链路中的业务请求量来确定多个链路中的一个链路被阻塞 服务流程相对于设置为被阻止的各个链接。