公开(公告)号：US20140328165A1

公开(公告)日：2014-11-06

申请号：US14269538

申请日：2014-05-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jeong Dong RYOO ,  Tae Sik CHEUNG ,  Dae Ub KIM

IPC: H04L12/703 ,  H04W40/24

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/48 ,  H04L45/62

Abstract: A method of operating a root node in which the root node transmits/receives traffic with a plurality of leaf nodes through a plurality of working paths is disclosed, the method including receiving, from a first leaf node, a first signal failure (SF) message indicating an occurrence of a failure on a first working path of the first leaf node, receiving traffic from the first leaf node by switching the first working path to a first protection path, and receiving traffic from remaining leaf nodes aside from the first leaf node while maintaining the working path.

Abstract translation: 公开了一种操作根节点的方法，其中根节点通过多个工作路径发送/接收具有多个叶节点的业务，该方法包括从第一叶节点接收第一信号故障（SF）消息 指示在第一叶节点的第一工作路径上出现故障，通过将第一工作路径切换到第一保护路径来接收来自第一叶节点的业务，以及从除第一叶节点之外的剩余叶节点接收业务， 维护工作路径。

公开(公告)号：US20160344630A1

公开(公告)日：2016-11-24

申请号：US15160445

申请日：2016-05-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Won Kyoung LEE ,  Jeong Dong RYOO ,  Tae Sik CHEUNG

IPC: H04L12/741 ,  H04L29/12 ,  H04L12/713 ,  H04L12/723 ,  H04L29/06

CPC classification number: H04L45/745 ,  H04L41/0668 ,  H04L43/0811 ,  H04L45/22 ,  H04L45/50 ,  H04L45/586 ,  H04L49/00

Abstract: Provided is a packet transmission apparatus including at least one user network interface (UNI) line card configured to receive traffic including a client signal, a fabric switch configured to perform switching on the traffic based on a unit of line card, a network-to-network interface working (NNI-W) line card configured to generate a multiprotocol label switching-transport profile (MPLS-TP) working tunnel to transmit the traffic transferred through the fabric switch, and a network-to-network interface protection (NNI-P) line card configured to generate a MPLS-TP protection tunnel to transmit the traffic transferred through the fabric switch when a fault occurs on a path of the NNI-W line card.

Abstract translation: 提供了一种分组传输装置，包括：至少一个用户网络接口（UNI）线路卡，被配置为接收包括客户端信号的业务，配置为基于线卡单元对业务进行交换的网络交换机， 网络接口工作（NNI-W）线路卡，用于生成多协议标签交换传输配置文件（MPLS-TP）工作隧道，传输通过Fabric交换机传输的流量，以及网络到网络接口保护（NNI-P ）线卡，用于生成MPLS-TP保护隧道，以在NNI-W线路卡的路径上发生故障时传输通过Fabric交换机传输的流量。

公开(公告)号：US20160142286A1

公开(公告)日：2016-05-19

申请号：US14945945

申请日：2015-11-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dae Ub KIM ,  Jeong Dong RYOO ,  Tae Sik CHEUNG

IPC: H04L12/707

CPC classification number: H04L45/22 ,  H04L45/28

Abstract: Provided is an operation method of a node, the method including recognizing multiple failures occurring in a protected domain, transmitting a message including failure information, multiple-failure information, and used path information to a second node when the multiple failures are recognized, and performing a protection switching to a used path determined based on a priority for each of the multiple failures.

Abstract translation: 提供了一种节点的操作方法，该方法包括识别在受保护域中发生的多个故障，当识别出多个故障时，将包括故障信息，多故障信息和所使用的路径信息的消息发送到第二节点，并且执行 基于针对每个多个故障的优先级确定的对所使用路径的保护切换。

公开(公告)号：US20150109900A1

公开(公告)日：2015-04-23

申请号：US14514822

申请日：2014-10-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dae Ub KIM ,  Jeong Dong RYOO ,  Tae Sik CHEUNG

IPC: H04L12/24 ,  H04L12/703 ,  H04L12/707

CPC classification number: H04L41/0663 ,  H04L45/22 ,  H04L45/28

Abstract: Provided is a linear protection switching method of a node, wherein the method includes selecting a local request based on a priority of at least one local request, determining a global request based on a priority between the selected local request and a remote message, and performing a state transition based on the global request.

Abstract translation: 提供了一种节点的线性保护切换方法，其中所述方法包括基于至少一个本地请求的优先级来选择本地请求，基于所选择的本地请求和远程消息之间的优先级来确定全局请求，并且执行 基于全局请求的状态转换。

公开(公告)号：US20250150372A1

公开(公告)日：2025-05-08

申请号：US18937322

申请日：2024-11-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jinoo JOUNG ,  Ju Hyeok KWON ,  Jeong Dong RYOO ,  Tae Sik CHEUNG

IPC: H04L43/0876 ,  H04L47/2441

Abstract: According to an aspect of the present disclosure, there is provided a method for estimating a total link service rate using packet metadata, the method comprising: extracting a packet satisfying a predetermined condition from each flow; extracting a link service rate from metadata of the extracted packet; and estimating a total link service rate based on the extracted link service rate, wherein the packet satisfying the predetermined condition is determined based on an estimation reference time and finish times of consecutive packets, and wherein the finish times indicates ideal transmission finish times of the packets.

公开(公告)号：US20160149802A1

公开(公告)日：2016-05-26

申请号：US14926273

申请日：2015-10-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Ji Wook YOUN ,  Jeong Dong RYOO ,  Tae Sik CHEUNG ,  Ho Geon KIM ,  Seung Woo LEE

IPC: H04L12/707 ,  H04Q11/00

CPC classification number: H04L45/22 ,  H04J3/14 ,  H04J3/1652 ,  H04J2203/006 ,  H04L45/28

Abstract: A communication terminal performing protection switching in a shared mesh network is provided. The communication terminal configured to transmit and receive data traffic associated with a first working path may include a processor configured to encode, in an optical channel data unit (ODU) including the data traffic, a first operation command message to be received from a first end node, and a communicator configured to transmit the ODU to a neighboring node, in which the first end node is present in a second working path.

Abstract translation: 提供了在共享网状网络中执行保护倒换的通信终端。 被配置为发送和接收与第一工作路径相关联的数据业务的通信终端可以包括处理器，其被配置为在包括数据业务的光信道数据单元（ODU）中对从第一端接收的第一操作命令消息进行编码 节点和通信器，其被配置为将ODU发送到相邻节点，其中第一端节点存在于第二工作路径中。

公开(公告)号：US20150098317A1

公开(公告)日：2015-04-09

申请号：US14507056

申请日：2014-10-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Tae Sik CHEUNG ,  Jeong Dong RYOO ,  Dae Ub KIM

IPC: H04L12/703 ,  H04L12/707

CPC classification number: H04L45/28 ,  H04L45/22

Abstract: Provided is a protection end node located at an end of a protection path, wherein the protection end node includes a receiver to receive, from a working end node located at an end of a working path, path defect information indicating whether a defect occurs on the working path, a processor to perform protection switching in response to reception of the path defect information and generate path control information used for the working end node to control a connection of the working path based on the protection switching, and a transmitter to transmit the path control information to the working end node.

Abstract translation: 提供了一种保护端节点，其位于保护路径的末端，其中保护端节点包括接收器，用于从位于工作路径的端部的工作端节点接收指示是否发生缺陷的路径缺陷信息 工作路径，响应于路径缺陷信息的接收而执行保护切换的处理器，并且生成用于工作端节点的路径控制信息，以基于保护切换来控制工作路径的连接;以及发送器，用于发送路径 控制信息到工作端节点。

公开(公告)号：US20190104073A1

公开(公告)日：2019-04-04

申请号：US16143966

申请日：2018-09-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chang Ho CHOI ,  Tae Kyu KANG ,  Jeong Dong RYOO ,  Tae Sik CHEUNG

IPC: H04L12/851 ,  H04W28/06 ,  H04W72/04 ,  H04L12/841

Abstract: A frame transmission controlling apparatus includes: a list configuration unit managing a parameter related to a gate control; a cycle timer unit managing a start timing of a cycle; a list executing unit performing the gate control based on the parameter, wherein the list executing unit includes: a cycle executing state machine setting an expiration time of at least one section included in the cycle, checking gate operation information corresponding to a list pointer indicating the at least one section, and performing a control corresponding to the gate operation information; a delaying state machine deducting and updating the expiration time by a predetermined unit; a cycle holding state machine generating a control signal indicating stopping transmission in MAC; and a cycle releasing state machine generating a control signal indicating resuming the transmission in MAC.

公开(公告)号：US20150271107A1

公开(公告)日：2015-09-24

申请号：US14657344

申请日：2015-03-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Wook RA ,  Jeong Dong RYOO

IPC: H04L12/939 ,  H04L12/707

CPC classification number: H04L49/557 ,  H04L45/22 ,  H04L45/28

Abstract: A protection switching method and apparatus based on a memory control in a packet transport system are provided. The protection switching method may perform hardware-based protection switching based on a type of path failures that occur. The protection switching method may perform protection switching for each of an Automatic Protection Switching (APS) frame or a Loss of Continuity (LoC)/Clear Loss of Continuity (CLoC) message received via an interface unit from a packet processor, a LoC/CLoC message received via a local bus interface from a host processor, an APS frame generation command input via the local bus interface from protection software (SW) of the host processor, and an APS frame generation command input via another interface unit from the protection SW.

Abstract translation: 提供了一种基于分组传送系统中的存储器控​​制的保护切换方法和装置。 保护倒换方法可以基于发生的路径故障类型执行基于硬件的保护切换。 保护切换方法可以执行自动保护倒换（APS）帧或者通过接口单元从分组处理器接收的连续性丢失（LoC）/清除连续丢失（CLoC）消息中的每一个的保护倒换，LoC / CLoC 通过本地总线接口从主处理器接收的消息，经由本地总线接口从主处理器的保护软件（SW）输入的APS帧生成命令，以及经由另一个接口单元从保护SW输入的APS帧生成命令。

公开(公告)号：US20140328164A1

公开(公告)日：2014-11-06

申请号：US14263256

申请日：2014-04-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae Ub KIM ,  Jeong Dong RYOO ,  Tae Sik CHEUNG

IPC: H04L12/24 ,  H04L12/707

CPC classification number: H04L45/22 ,  H04L41/0663 ,  H04L45/02 ,  H04L45/28 ,  H04L45/48

Abstract: A method of operating a root node in a multipoint-connection with a plurality of leaf nodes, the method including transmitting/receiving traffic with the plurality of leaf nodes via a working path, receiving, from a leaf node, a message indicating an occurrence of a failure on a path of the leaf node from among the plurality of leaf nodes, recognizing an occurrence of a local failure on the path connected to the leaf node, and transmitting information about the failure to the leaf node.

Abstract translation: 一种操作与多个叶节点的多点连接中的根节点的方法，所述方法包括经由工作路径与所述多个叶节点发送/接收业务，从叶节点接收指示发生 在多个叶节点之间的叶节点的路径上的故障，识别在连接到叶节点的路径上发生本地故障，并将关于故障的信息发送到叶节点。