公开(公告)号：US4896317A

公开(公告)日：1990-01-23

申请号：US155139

申请日：1988-02-11

申请人： Noboru Nakama ,  Hideyuki Motoori ,  Atsushi Suzuki ,  Eiji Sugawara ,  Naoyuki Kato

发明人： Noboru Nakama ,  Hideyuki Motoori ,  Atsushi Suzuki ,  Eiji Sugawara ,  Naoyuki Kato

IPC分类号： H04B17/40

CPC分类号： H04B17/406

摘要： A supervisory system for a primary group digital transmission line wherein a terminal repeater transmits, over a supervisory line, address information designating an intermediate repeater and line within the intermediate repeater to be monitored while the line is in a normal, in-service condition. The terminal repeater and intermediate repeaters are cascade connected by way of the supervisory line. The terminal repeater and each of the intermediate repeaters include amplifiers that receive and send information along the transmission line, and have a monitor output. The monitor output is processed by an error monitor within the terminal repeater and in each of the intermediate repeaters and the results of the error monitoring provided to the supervisory line in response to polling by the terminal repeater.

公开(公告)号：US08705373B2

公开(公告)日：2014-04-22

申请号：US13315690

申请日：2011-12-09

申请人： Katsuya Kitamori ,  Eiji Sugawara

发明人： Katsuya Kitamori ,  Eiji Sugawara

IPC分类号： H04L12/26

CPC分类号： H04L43/0805 ,  H04L43/50

摘要： A method for packet forwarding, including receiving packets; extracting a test packet containing information indicating a path to be verified from the received packets; and forwarding the test packet to the path to be verified, rather than to a first path to which the received packets are forwarded, based on the information indicating the path to be verified contained in the test packet.

摘要翻译： 一种分组转发方法，包括接收分组; 从接收到的分组提取包含指示要验证的路径的信息的测试分组; 并且基于指示包含在测试分组中的要被验证的路径的信息，将测试分组转发到待验证的路径，而不是转发到所接收的分组被转发到的第一路径。

公开(公告)号：US20100209106A1

公开(公告)日：2010-08-19

申请号：US12698497

申请日：2010-02-02

申请人： Eiji Sugawara

发明人： Eiji Sugawara

IPC分类号： H04B10/20

CPC分类号： H04B10/275 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0283 ,  H04J14/0295

摘要： An optical transmission apparatus connected to an optical ring network stores identification information of an optical transmission apparatus as a communication partner predetermined on a communication path. Each optical transmission apparatus includes self identification information in header information of an optical signal having a working wavelength used in normal operation, and transmits the optical signal to one of the two optical ring networks transferring optical signals in mutually opposite directions. The optical transmission apparatus determines whether the identification information included in the header information of the received optical signal having the working wavelength matches pre-stored identification information. The optical transmission apparatus thus detects a fault that occurs by the communication path. The optical transmission apparatus having detected the fault requests the communication partner to transmit the optical signal on a backup wavelength in the optical ring network opposite in direction to the optical ring network in the normal operation.

摘要翻译： 连接到光环网的光传输装置存储作为在通信路径上预定的通信对象的光传输装置的识别信息。 每个光传输装置包括在正常操作中使用的具有工作波长的光信号的标题信息中的自身识别信息，并将光信号发送到相互相反方向传送光信号的两个光环网之一。 光发送装置判定包含在具有工作波长的接收光信号的标题信息中的识别信息是否与预先存储的识别信息相匹配。 因此，光传输装置检测通信路径发生的故障。 检测到故障的光传输装置要求通信对方在正常操作中在与光环网方向相反的光环网中发送备份波长的光信号。

公开(公告)号：US08971172B2

公开(公告)日：2015-03-03

申请号：US13434743

申请日：2012-03-29

申请人： Eiji Sugawara

发明人： Eiji Sugawara

IPC分类号： G01R31/08 ,  H04L12/437

CPC分类号： H04L12/437

摘要： A ring network of a multicast label switch path scheme includes a transmitting node and receiving nodes connected to form a ring. A signal input to the transmitting node is branched to be transmitted in first and second different directions to first and second receiving nodes through first and second working paths, respectively, in the ring network. The first and second receiving nodes define terminal points of the first and second working paths, respectively, from the transmitting node. A first backup path is set from the first receiving node to the transmitting node, and a second backup path is set from the second receiving node to the transmitting node. The first backup path is in an opposite direction to the first working path and the second backup path is in an opposite direction to the second working path.

摘要翻译： 组播标签交换路径方案的环网包括发送节点和连接形成环的接收节点。 输入到发送节点的信号被分支以在第一和第二不同方向上分别通过环形网络中的第一和第二工作路径发送到第一和第二接收节点。 第一和第二接收节点分别从发送节点定义第一和第二工作路径的终端点。 从第一接收节点到发送节点设置第一备份路径，并且从第二接收节点到发送节点设置第二备份路径。 第一备用路径与第一工作路径相反，第二备用路径与第二工作路径相反。

公开(公告)号：US6021112A

公开(公告)日：2000-02-01

申请号：US780694

申请日：1997-01-08

申请人： Eiji Sugawara

发明人： Eiji Sugawara

IPC分类号： H04L1/22 ,  H04J3/00 ,  H04J3/08 ,  H04Q11/04 ,  H04J1/16 ,  G01R31/28

CPC分类号： H04J3/085 ,  H04J2203/006

摘要： A path switching ring control apparatus is provided for use in a synchronous (SDH) network, and in particular for the purpose of repairing a fault which occurs in an asynchronous (PDH) subnetwork contained therein, this apparatus having a transmission alarm detection section which monitors the input PDH signal and generates a transmission alarm signal when a degradation of the quality thereof is detected, a path overhead generation section which generates the path overhead information of the transmission alarm signal from the transmission alarm detection section, and a path overhead insertion section which inserts the overhead information generated by the path overhead generation section into an SDH signal after the mapping thereof.

摘要翻译： 提供了一种在同步（SDH）网络中使用的路径切换环控制装置，特别是为了修复发生在其中包含的异步（PDH）子网中的故障的目的，该装置具有传输报警检测部分，其监视 输入PDH信号，并且当检测到其质量劣化时产生传输报警信号，生成来自传输报警检测部分的传输报警信号的路径开销信息的路径开销生成部分和路径开销插入部分， 在路径开销产生部分生成的开销信息在其映射之后插入SDH信号。

公开(公告)号：US5313456A

公开(公告)日：1994-05-17

申请号：US860118

申请日：1992-03-31

申请人： Eiji Sugawara

发明人： Eiji Sugawara

IPC分类号： H04J3/14 ,  H04L1/22 ,  H04J1/16

CPC分类号： H04L1/22 ,  H04J3/14

摘要： A line interface circuit on the receiving side detects communication failure in terms of an error rate and informs the supervisory and control unit on the receiving side of the occurrence of the failure. The supervisory and control unit on the receiving side in turn switches the line data communications from the receiving side to the transmitting side to another line unused for data communications to inform the supervisory and control unit on the transmitting side of the occurrence of the failure. The supervisory and control unit on the transmitting side switches the line for data communications from the transmitting side to the receiving side to the other line. The switching circuit on the receiving side comprises buffers each inserted in a line and a buffer connected to the common outputs of the buffers so that the supervisory and control unit on the receiving side automatically receives a transmit signal transmitted over a line switched on the transmitting side.

摘要翻译： 接收侧的线路接口电路根据误码率检测通信故障，并通知接收侧的监控单元发生故障。 接收侧的监控单元又将从接收侧到发送侧的线路数据通信切换到不用于数据通信的另一线路，以将发送侧的监控单元通知发生故障。 发送侧的监控单元将从发送侧到接收侧的数据通信用线切换到另一行。 接收侧的开关电路包括各自插入线路中的缓冲器和连接到缓冲器的公共输出端的缓冲器，使得接收侧的监控单元自动接收通过在发送侧切换的线路发送的发送信号 。

公开(公告)号：US08605576B2

公开(公告)日：2013-12-10

申请号：US13118584

申请日：2011-05-31

申请人： Kenya Takuwa ,  Eiji Sugawara

发明人： Kenya Takuwa ,  Eiji Sugawara

IPC分类号： G01R31/08 ,  G06F11/00 ,  G06F15/16 ,  H04L1/00 ,  H04L12/28 ,  G08B25/00

CPC分类号： H04L41/0654 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L45/62

摘要： A communication network system includes a processor, and a plurality of node apparatuses using a protocol to establish paths therebetween, wherein the processor determines each of the node apparatuses to be a packet source or a packet destination, and operates to detect an occurrence of failure in two paths being established between the packet source and the packet destination in the communication network system, and wherein the processor transmits packet data including user data through one of the two paths, and when one of the node apparatuses detects an occurrence of a failure in one of the two paths, the processor changes the path to the other path.

摘要翻译： 通信网络系统包括处理器和使用协议在其间建立路径的多个节点装置，其中处理器将每个节点装置确定为分组源或分组目的地，并且操作以检测故障的发生 在通信网络系统中在分组源和分组目的地之间建立两条路径，并且其中处理器通过两条路径之一发送包括用户数据的分组数据，并且当其中一个节点设备检测到一个故障发生时 的两个路径，处理器将路径更改为另一路径。

公开(公告)号：US20120140679A1

公开(公告)日：2012-06-07

申请号：US13289171

申请日：2011-11-04

申请人： Toru INABA ,  Eiji Sugawara

发明人： Toru INABA ,  Eiji Sugawara

IPC分类号： H04L12/28

CPC分类号： H04L12/437 ,  H04L45/28 ,  H04L45/50

摘要： A path setting method for setting a backup path corresponding to a currently used path in a ring network using a label switching method includes setting an unused first label as a transmitting label of the backup path corresponding to the currently used path in a first direction; reporting the first label to a adjoining transmission device in the first direction; setting the first label as a receiving label of the backup path in the first direction; setting an unused second label as the transmitting label of the backup path in a second direction; reporting the second label to a adjoining transmission device in the second direction; and setting the second label as the receiving label of the backup path in the second direction, in which the backup path is set when the currently used path is set between two transmission devices.

摘要翻译： 用于使用标签切换方法设置与环网中当前使用的路径相对应的备份路径的路径设置方法包括：将未使用的第一标签设置为与第一方向上的当前使用路径相对应的备份路径的发送标签; 在第一方向向相邻的传输设备报告第一标签; 将第一个标签设置为第一个方向的备份路径的接收标签; 将未使用的第二标签作为第二方向的备份路径的发送标签设置; 将所述第二标签以第二方向报告给相邻的传输设备; 并且在第二方向上将第二标签设置为备用路径的接收标签，当在两个传输设备之间设置当前使用的路径时，设置备份路径。

公开(公告)号：US20090003199A1

公开(公告)日：2009-01-01

申请号：US12149376

申请日：2008-04-30

申请人： Eiji Sugawara

发明人： Eiji Sugawara

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04L12/58

CPC分类号： H04L12/4637 ,  H04L41/0803 ,  H04L41/0809

摘要： A system enabling inter-ring network connection when a plurality of ring networks are connected via a redundancy network, that is, a packet network system configured by a plurality of ring networks and redundancy networks linking the plurality of ring networks. This system virtually defines a plurality of virtual resilient packet ring networks among all of these packet networks and transfers packets on a designated virtual resilient packet ring network. Here, each virtual resilient packet ring network is identified by a virtual resilient packet ring network identifier allocated to each.

摘要翻译： 当多个环形网络经由冗余网络连接时，即由多个环形网络配置的分组网络系统和链接多个环形网络的冗余网络，能够实现环网间连接的系统。 该系统虚拟地定义了所有这些分组网络中的多个虚拟弹性分组环网络，并且在指定的虚拟弹性分组环网络上传送分组。 这里，通过分配给每个虚拟弹性分组环网络标识符来识别每个虚拟弹性分组环网络。

公开(公告)号：US08280244B2

公开(公告)日：2012-10-02

申请号：US12698497

申请日：2010-02-02

申请人： Eiji Sugawara

发明人： Eiji Sugawara

IPC分类号： G02F1/00 ,  G01R31/08

CPC分类号： H04B10/275 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0283 ,  H04J14/0295

摘要： An optical transmission apparatus connected to an optical ring network stores identification information of an optical transmission apparatus as a communication partner predetermined on a communication path. Each optical transmission apparatus includes self identification information in header information of an optical signal having a working wavelength used in normal operation, and transmits the optical signal to one of the two optical ring networks transferring optical signals in mutually opposite directions. The optical transmission apparatus determines whether the identification information included in the header information of the received optical signal having the working wavelength matches pre-stored identification information. The optical transmission apparatus thus detects a fault that occurs by the communication path. The optical transmission apparatus having detected the fault requests the communication partner to transmit the optical signal on a backup wavelength in the optical ring network opposite in direction to the optical ring network in the normal operation.

摘要翻译： 连接到光环网的光传输装置存储作为在通信路径上预定的通信对象的光传输装置的识别信息。 每个光传输装置包括在正常操作中使用的具有工作波长的光信号的标题信息中的自身识别信息，并将光信号发送到相互相反方向传送光信号的两个光环网之一。 光发送装置判定包含在具有工作波长的接收光信号的标题信息中的识别信息是否与预先存储的识别信息相匹配。 因此，光传输装置检测通信路径发生的故障。 检测到故障的光传输装置要求通信对方在正常操作中在与光环网方向相反的光环网中发送备份波长的光信号。