公开(公告)号：US20100309934A1

公开(公告)日：2010-12-09

申请号：US12678167

申请日：2008-09-12

申请人： Masaki Umayabashi ,  Hideo Yoshimi ,  Zhenlong Cui ,  Kazuo Takagi ,  Atsushi Iwata

发明人： Masaki Umayabashi ,  Hideo Yoshimi ,  Zhenlong Cui ,  Kazuo Takagi ,  Atsushi Iwata

IPC分类号： H04J3/06

CPC分类号： H04J3/0632 ,  H03L7/06 ,  H04L69/28

摘要： The clock synchronization accuracy between a master node and a slave node is stably measured. The slave node synchronizes its own clock with the clock of the master node by means of the packets transmitted from the master node. It reproduces the clock of the slave node by means of the transmitted packets, accumulates information on the transmitted packets and the clock of the slave node and performs clock synchronization on the basis of the accumulated information.

摘要翻译： 稳定地测量主节点和从节点之间的时钟同步精度。 从节点通过从主节点发送的分组将其自己的时钟与主节点的时钟同步。 它通过发送的分组再现从节点的时钟，累积关于发送的分组的信息和从节点的时钟，并根据累积的信息执行时钟同步。

公开(公告)号：US08675665B2

公开(公告)日：2014-03-18

申请号：US12678167

申请日：2008-09-12

申请人： Masaki Umayabashi ,  Hideo Yoshimi ,  Zhenlong Cui ,  Kazuo Takagi ,  Atsushi Iwata

发明人： Masaki Umayabashi ,  Hideo Yoshimi ,  Zhenlong Cui ,  Kazuo Takagi ,  Atsushi Iwata

IPC分类号： H04L12/28

CPC分类号： H04J3/0632 ,  H03L7/06 ,  H04L69/28

摘要： The clock synchronization accuracy between a master node and a slave node is stably measured. The slave node synchronizes its own clock with the clock of the master node by means of the packets transmitted from the master node. It reproduces the clock of the slave node by means of the transmitted packets, accumulates information on the transmitted packets and the clock of the slave node and performs clock synchronization on the basis of the accumulated information.

摘要翻译： 稳定地测量主节点和从节点之间的时钟同步精度。 从节点通过从主节点发送的分组将其自己的时钟与主节点的时钟同步。 它通过发送的分组再现从节点的时钟，累积关于发送的分组的信息和从节点的时钟，并根据累积的信息执行时钟同步。

公开(公告)号：US20120219003A1

公开(公告)日：2012-08-30

申请号：US13505546

申请日：2010-11-02

申请人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

发明人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

IPC分类号： H04L12/56

CPC分类号： H04L12/26 ,  H04L43/00 ,  H04L43/0817 ,  H04L45/50 ,  H04L47/286 ,  H04L49/30 ,  H04L49/555

摘要： [Issues] To provide a node (transfer device) which can process an OAM frame within an output line card.[Solution Method]A node according to the present invention is used in an MPLS (Multi Protocol Label Switching) network, and the node includes an input unit which receives an OAM (Operation Administration and Maintenance) frame including TTL (Time To Live) from outside of the node and an output unit which transmits an OAM frame to outside of the node, wherein the input unit sets the TTL to a specific value and transmits the received OAM frame to the output unit in case a termination destination which an OAM frame received from outside indicates is the node and the received OAM frame is to be transmitted to the output unit and the output unit terminates an OAM frame transmitted from the input unit.

摘要翻译： [问题]提供可以处理输出线卡内的OAM帧的节点（传送装置）。 [解决方案]根据本发明的节点在MPLS（多协议标签交换）网络中使用，并且节点包括输入单元，其接收包括TTL（生存时间）的OAM（操作管理和维护）帧， 在节点外部，以及将OAM帧发送到节点外部的输出单元，其中，输入单元将TTL设置为特定值，并且在接收到OAM帧的终止目的地的情况下将接收到的OAM帧发送到输出单元 从外部指示是节点，并且所接收的OAM帧将被发送到输出单元，并且输出单元终止从输入单元发送的OAM帧。

公开(公告)号：US08731036B2

公开(公告)日：2014-05-20

申请号：US13129755

申请日：2009-11-20

申请人： Masaki Umayabashi ,  Zhenlong Cui ,  Kazuo Takagi

发明人： Masaki Umayabashi ,  Zhenlong Cui ,  Kazuo Takagi

IPC分类号： H04L7/00

CPC分类号： H04J3/0664 ,  H03L7/08 ,  H04J3/0632

摘要： A clock synchronization system synchronizes a clock of a slave node with a clock of a master node. The master node includes a packet transmitting unit that transmits a packet including a time stamp (TS) to the slave node. The slave node includes: a packet receiving unit that receives the packet transmitted from the master node; a packet filter unit that calculates as a value of delay of the packet a difference between a TS on the clock of the slave node when the packet is received and the TS of the packet received, corrects the value of the delay of the packet or a threthold for the delay of the packet, and performs filter processing on the packet received from the packet receiving unit based on the value of the delay of the packet and the threshold for the delay of the packet; and a phase synchronization unit that outputs the clock of the slave node based on the TS included in the packet employed.

摘要翻译： 时钟同步系统将从节点的时钟与主节点的时钟同步。 主节点包括分组发送单元，该分组发送单元将包括时间戳（TS）的分组发送到从节点。 从节点包括：分组接收单元，接收从主节点发送的分组; 分组过滤器单元，当分组接收到从属节点的时钟上的TS与接收到的分组的TS之间的时间差时，计算分组的延迟值，校正分组的延迟的值或 考虑到分组的延迟，并且基于分组的延迟的值和分组的延迟的阈值对从分组接收单元接收的分组执行滤波处理; 以及相位同步单元，其基于包含在所使用的分组中的TS输出从节点的时钟。

公开(公告)号：US08897308B2

公开(公告)日：2014-11-25

申请号：US13505546

申请日：2010-11-02

申请人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

发明人： Zhenlong Cui ,  Hiroyuki Takagi ,  Masaki Umayabashi ,  Kazuo Takagi ,  Akira Sakurai ,  Hiroshi Tanaka

IPC分类号： H04L12/26 ,  H04L12/723

CPC分类号： H04L12/26 ,  H04L43/00 ,  H04L43/0817 ,  H04L45/50 ,  H04L47/286 ,  H04L49/30 ,  H04L49/555

摘要： A node according to the present invention is used in an MPLS (Multi Protocol Label Switching) network, and the node includes an input unit which receives an OAM (Operation Administration and Maintenance) frame including TTL (Time To Live) from outside of the node and an output unit which transmits an OAM frame to outside of the node, wherein the input unit sets the TTL to a specific value and transmits the received OAM frame to the output unit in case a termination destination which an OAM frame received from outside indicates is the node and the received OAM frame is to be transmitted to the output unit and the output unit terminates an OAM frame transmitted from the input unit.

摘要翻译： 根据本发明的节点用于MPLS（多协议标签交换）网络中，并且节点包括输入单元，其从节点外部接收包括TTL（生存时间）的OAM（操作管理和维护）帧 以及将OAM帧发送到节点外部的输出单元，其中，所述输入单元将所述TTL设置为特定值，并且在从外部指示的OAM帧指示的终止目的地为所述输出单元的情况下将所接收的OAM帧发送到所述输出单元 节点和接收的OAM帧将被发送到输出单元，并且输出单元终止从输入单元发送的OAM帧。

公开(公告)号：US20120113820A1

公开(公告)日：2012-05-10

申请号：US13377241

申请日：2010-06-11

申请人： Masaki Umayabashi ,  Zhenlong Cui ,  Hiroyuki Takagi ,  Kazuo Takagi

发明人： Masaki Umayabashi ,  Zhenlong Cui ,  Hiroyuki Takagi ,  Kazuo Takagi

IPC分类号： H04L12/26

CPC分类号： H04L12/26 ,  H04L12/54 ,  H04L43/00 ,  H04L43/0864 ,  H04L43/0882 ,  H04L43/10 ,  H04L45/26 ,  H04L47/10 ,  H04W28/02 ,  H04W72/10

摘要： An inspection signal to inspect forward-path or return-path communication, is transmitted from a reference node of a network. A response signal is transmitted in a priority class from a node of a forward path to the reference node. In the case of inspection of return-path communication, a replica of the response signal is transmitted in a non-priority class from the node of the forward path to the return path, and the node that receives the replica of the response signal transfers the replica in a priority class to the reference node. In the case of inspection of forward-path communication, a replica of the inspection signal is transmitted in a non-priority class from the node of the forward path to the forward path, and a replica of the response signal is transmitted in a priority class from the node that receives a replica of the inspection signal to the reference node.

摘要翻译： 从网络的参考节点发送检查前向路径或返回路径通信的检查信号。 响应信号在优先等级中从正向路径的节点发送到参考节点。 在检查返回路径通信的情况下，将响应信号的副本从正向路径的节点发送到非优先级类别到返回路径，并且接收响应信号的副本的节点将 在优先级类中的副本到引用节点。 在检查前向通信的情况下，将检查信号的副本从正向路径的节点向前向路径发送到非优先级等级，并且将响应信号的副本以优先级等级发送 从接收检查信号的副本的节点到参考节点。

公开(公告)号：US08711686B2

公开(公告)日：2014-04-29

申请号：US13219804

申请日：2011-08-29

申请人： Kazuo Takagi ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

发明人： Kazuo Takagi ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

IPC分类号： H04L12/26 ,  H04L12/56 ,  H04L1/22 ,  H04J14/02

CPC分类号： H04L45/28 ,  H04J14/0294 ,  H04J14/0295 ,  H04L1/22 ,  H04L41/0659 ,  H04L41/0663 ,  H04L45/22

摘要： Between a first pair of termination nodes, a first current-use packet transmission path and at least one first spare packet transmission path are defined. Between a second pair of termination nodes, a second current-use packet transmission path and at least one second spare packet transmission path are defined. When no network fault occurs, packets are transmitted between the pairs of nodes in a 1:1 transfer mode in which the pairs transfer packets via both current-use packet transmission paths only. When a network fault occurs in the first current-use packet transmission path, both transmissions are switched from a 1:1 transfer mode to a 1+1 transfer mode, in which the first pair of nodes transfer packets by using the first current-use packet transmission path and the first spare packet transmission path, and the second pair transfer packets by using the second current-use packet transmission path and the second spare packet transmission path.

摘要翻译： 在第一对终端节点之间，定义第一当前使用分组传输路径和至少一个第一备用分组传输路径。 在第二对终端节点之间，定义第二当前使用分组传输路径和至少一个第二备用分组传输路径。 当没有发生网络故障时，分组以1：1传输模式在两对节点之间传输，其中对只通过当前使用的分组传输路径传输分组。 当在第一当前使用分组传输路径中出现网络故障时，两个传输从1：1传输模式切换到1 + 1传输模式，其中第一对节点通过使用第一当前使用 分组传输路径和第一备用分组传输路径，并且第二对传输分组通过使用第二当前使用分组传输路径和第二备用分组传输路径。

公开(公告)号：US20130170390A1

公开(公告)日：2013-07-04

申请号：US13823534

申请日：2011-09-21

申请人： Masaki Umayabashi ,  Zhenlong Cui ,  Kazuo Takagi

发明人： Masaki Umayabashi ,  Zhenlong Cui ,  Kazuo Takagi

IPC分类号： H04L12/26

CPC分类号： H04L43/0852 ,  H04L47/28 ,  H04L47/32

摘要： The present invention measures 1-way delay without equipping all nodes with special functionality in a situation in which time has not been synchronized. The delay measurement system of the present invention has a transmission origin node and a transmission destination node which is connected to the transmission origin node through a network including relay nodes, and measures the delay time from the transmission origin node to the transmission destination node direction, wherein the transmission origin node generates a clock. On the basis of the generated clock, delay measurement packets are generated at regular periods. The generated delay measurement packets are transmitted to the transmission destination node. The transmission destination node selects the delay measurement packets from among the received frames. The delay received by the delay measurement packets in the network between the transmission origin node to the node itself is measured.

摘要翻译： 本发明在时间尚未同步的情况下测量单向延迟而不对具有特殊功能的所有节点进行装配。 本发明的延迟测量系统具有通过包括中继节点的网络连接到发送源节点的发送源节点和发送目的地节点，并且测量从发送起始节点到发送目的地节点方向的延迟时间， 其中发送源节点生成时钟。 在生成的时钟的基础上，定期生成延迟测量数据包。 生成的延迟测量分组被发送到发送目的地节点。 发送目的地节点从接收到的帧中选择延迟测量分组。 测量由发送源节点到节点本身之间的网络中的延迟测量分组所接收的延迟。

公开(公告)号：US20120051214A1

公开(公告)日：2012-03-01

申请号：US13219804

申请日：2011-08-29

申请人： KAZUO TAKAGI ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

发明人： KAZUO TAKAGI ,  Zhenlong Cui ,  Masaki Umayabashi ,  Akira Sakurai

IPC分类号： G06F11/00

CPC分类号： H04L45/28 ,  H04J14/0294 ,  H04J14/0295 ,  H04L1/22 ,  H04L41/0659 ,  H04L41/0663 ,  H04L45/22

摘要： A packet transmission system includes a plurality of nodes connected by a packet transmission path. A current-use packet transmission path is used as the packet transmission path when a fault does not occur, and a spare packet transmission path is used as the packet transmission path when the fault has occurred. Each of the plurality of nodes includes: a transfer mode switching section configured to switch a transfer mode when transferring a received packet to a destination node to a 1:1 transfer mode or a 1+1 transfer mode, wherein the packet is transferred by the current-use packet transmission path in the 1:1 transfer mode, but the spare packet transmission path is not used, and the packet is transferred by the current-use packet transmission path and the spare packet transmission path in the 1+1 transfer mode; a path controller configured to instruct the transfer mode switching section to switch the transfer mode; a packet transferring section configured to transfer the received packet in the 1:1 transfer mode when the fault does not occur in the packet transmission network; and a reception path selecting section configured to select one of the packets received from the current-use packet transmission path and the spare packet transmission path in the 1+1 transfer mode.

摘要翻译： 分组传输系统包括通过分组传输路径连接的多个节点。 当发生故障时，使用当前使用的分组传输路径作为分组传输路径，并且在发生故障时使用备用分组传输路径作为分组传输路径。 多个节点中的每一个包括：传送模式切换部，被配置为当将接收到的分组传送到目的地节点时转换为1：1传输模式或1 + 1传输模式，其中分组由 当前使用的分组传输路径为1：1传输模式，但是备用分组传输路径不被使用，分组由当前使用的分组传输路径和备用分组传输路径以1 + 1传输模式传输 ; 路径控制器，被配置为指示传送模式切换部切换传送模式; 分组传送部，被配置为当所述分组传输网络中不发生故障时以1：1传输模式传送所接收的分组; 以及接收路径选择部，被配置为在1 + 1传送模式中选择从当前使用分组传输路径接收的分组和备用分组传输路径。

公开(公告)号：US09300558B2

公开(公告)日：2016-03-29

申请号：US13823534

申请日：2011-09-21

申请人： Masaki Umayabashi ,  Zhenlong Cui ,  Kazuo Takagi

发明人： Masaki Umayabashi ,  Zhenlong Cui ,  Kazuo Takagi

IPC分类号： H04L12/70 ,  H04L12/26 ,  H04L12/823 ,  H04L12/841

CPC分类号： H04L43/0852 ,  H04L47/28 ,  H04L47/32

摘要： The present invention measures 1-way delay without equipping all nodes with special functionality in a situation in which time has not been synchronized. The delay measurement system of the present invention has a transmission origin node and a transmission destination node which is connected to the transmission origin node through a network including relay nodes, and measures the delay time from the transmission origin node to the transmission destination node direction, wherein the transmission origin node generates a clock. On the basis of the generated clock, delay measurement packets are generated at regular periods. The generated delay measurement packets are transmitted to the transmission destination node. The transmission destination node selects the delay measurement packets from among the received frames. The delay received by the delay measurement packets in the network between the transmission origin node to the node itself is measured.

摘要翻译： 本发明在时间尚未同步的情况下测量单向延迟而不对具有特殊功能的所有节点进行装配。 本发明的延迟测量系统具有通过包括中继节点的网络连接到发送源节点的发送源节点和发送目的地节点，并且测量从发送起始节点到发送目的地节点方向的延迟时间， 其中发送源节点生成时钟。 在生成的时钟的基础上，定期生成延迟测量数据包。 生成的延迟测量分组被发送到发送目的地节点。 发送目的地节点从接收到的帧中选择延迟测量分组。 测量由发送源节点到节点本身之间的网络中的延迟测量分组所接收的延迟。