公开(公告)号：US20170111717A1

公开(公告)日：2017-04-20

申请号：US15391971

申请日：2016-12-28

Applicant: SOLID, INC.

Inventor： Do Yoon KIM ,  Kwang Nam SEO ,  Hee Gon KIM

IPC: H04Q11/00 ,  H04B10/25 ,  H04B10/29 ,  H04B10/275

CPC classification number: H04Q11/0005 ,  H04B10/038 ,  H04B10/0771 ,  H04B10/25 ,  H04B10/275 ,  H04B10/2755 ,  H04B10/29 ,  H04Q2011/0045

Abstract: A master unit configured to manage a plurality of remote units connected in a ring topology, the master unit comprising: a network management section configured to transmit at least one of a path-state monitoring control signal and a delay measurement control signal to the plurality of remote units in a first direction and a second direction which is a reverse direction of the first direction, and receives an acknowledgement signal in response to the at least one of a path-state monitoring control signal and a delay measurement control signal; and switching control means for transmitting a forward signal received from a base station in the first direction, and transmitting a switching control signal in the second direction when a defect is detected in any remote unit among the plurality of remote units by the network management section.

公开(公告)号：US20170070284A1

公开(公告)日：2017-03-09

申请号：US15357050

申请日：2016-11-21

Applicant: FUJITSU LIMITED

Inventor： Seiji Meki

IPC: H04B10/038 ,  H04B10/29 ,  H04L12/437 ,  H04L12/46 ,  H04B10/079 ,  H04B10/275

CPC classification number: H04B10/038 ,  H04B10/0791 ,  H04B10/2755 ,  H04B10/29 ,  H04L12/437 ,  H04L12/4641

Abstract: A relay method includes transmitting, by a first apparatus in a ring network, a first control frame in which information of the first apparatus is stored, through a first port different from a second port where a communication failure is detected; receiving, by a second apparatus in the ring network, the first control frame through a third port, when the communication failure does not occur at a side of a fourth port different from the third port: storing information of the second apparatus in the first control frame; and transmitting the first control frame through the fourth port; and when the communication failure occurs at the side of the fourth port, determining whether a data frame flowing into the ring network is affected by the communication failure for every VLAN (virtual local area network) based on the first control frame; and switching a communication path set in an affected VLAN.

Abstract translation: 中继方法包括通过环网中的第一装置通过与检测到通信故障的第二端口不同的第一端口来发送第一控制帧，其中存储有第一装置的信息的第一控制帧; 当在与第三端口不同的第四端口的一侧没有发生通信故障时，通过第三端口，通过环形网络中的第二设备接收第一控制帧：在第一控制中存储第二设备的信息 帧; 以及通过所述第四端口发送所述第一控制帧; 并且当在第四端口侧发生通信故障时，确定流入环网的数据帧是否受到基于第一控制帧的每个VLAN（虚拟局域网）的通信故障的影响; 并切换在受影响的VLAN中设置的通信路径。

公开(公告)号：US07738789B2

公开(公告)日：2010-06-15

申请号：US11011216

申请日：2004-12-15

Applicant: Uwe Sulzberger ,  Keld Lange

Inventor： Uwe Sulzberger ,  Keld Lange

IPC: H04B10/20 ,  H04J14/00

CPC classification number: H04W88/085 ,  H04B10/25756 ,  H04B10/2755

Abstract: A radio base station has a baseband unit (BB) and multiple RF heads (RH1, RH2), which are interconnected by means of a bi-directional two-fiber optical ring (R). Each RF head (RH1, RH2) has a delay counter (31) for determining a propagation delay (tL) on the ring (R) and a variable delay circuit (16, 26) for compensating a difference between the propagation delay on the ring and a predefined target delay (tRR). The delay counter counts (31) the delay between a test signal sent on the first fiber (F1) of the ring to the baseband unit and a received test signal looped back by the baseband unit on the second fiber (F2) of the ring.

Abstract translation: 无线基站具有通过双向双光纤光环（R）互连的基带单元（BB）和多个RF头（RH1，RH2）。 每个RF头（RH1，RH2）具有用于确定环（R）上的传播延迟（tL）的延迟计数器（31）和用于补偿环上的传播延迟之间的差异的可变延迟电路（16,26） 和预定义的目标延迟（tRR）。 延迟计数器计数（31）在环的第一光纤（F1）发送到基带单元的测试信号与基带单元在环的第二光纤（F2）上循环的接收测试信号之间的延迟。

公开(公告)号：US07433594B2

公开(公告)日：2008-10-07

申请号：US11580568

申请日：2006-10-12

Applicant: Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

Inventor： Noboru Takachio ,  Katsumi Iwatsuki ,  Hitoshi Obara

IPC: H04B10/00

CPC classification number: H04J14/029 ,  H04B10/271 ,  H04B10/272 ,  H04B10/2755 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0286 ,  H04Q11/0062 ,  H04Q11/0067 ,  H04Q2011/0086

Abstract: An optical wavelength division multiplexing network has a multi-level structure where a plurality of optical network units (ONUs) are connected to a lowest-level network. A node apparatus connected to networks other than the lowest-level network includes (a) passive optical components to branch optical signals from a higher-level network to a lower-level network, and couple optical signals from the lower-level network to the higher-level network, and (b) optical amplifiers for the optical signals. A node apparatus connected to the lowest-level network includes (a) an optical multiplexer/de-multiplexer to de-multiplex optical signals from the higher-level network, selectively output an optical signal to each ONU, and multiplex wave-length specific optical signals from the ONUs into a multiplexed optical signal, and (b) optical amplifiers for the optical signals. The node apparatuses provide an optical communication path between the higher-level network and the lower-level (or lowest-level) network without converting the optical signals into electrical signals.

Abstract translation: 光波分复用网络具有多层结构，其中多个光网络单元（ONU）连接到最低级网络。 连接到除了最低级网络之外的网络的节点装置包括（a）无源光学部件，以将来自上级网络的光信号分支到较低级网络，以及将来自下级网络的光信号耦合到较高级网络 （b）用于光信号的光放大器。 连接到最低级网络的节点装置包括：（a）用于对来自上级网络的光信号进行解复用的光复用器/去多路复用器，选择性地向每个ONU输出光信号，并且复用波长特定光 从ONU到多路复用光信号的信号，以及（b）用于光信号的光放大器。 节点装置在高级网络和下级（或最低级别）网络之间提供光通信路径，而不将光信号转换成电信号。

公开(公告)号：US20060275035A1

公开(公告)日：2006-12-07

申请号：US11416796

申请日：2006-05-02

Applicant: Winston Way

Inventor： Winston Way

IPC: H04B10/20

CPC classification number: H04J14/0232 ,  H04B10/27 ,  H04B10/271 ,  H04B10/275 ,  H04B10/2755 ,  H04J14/0221 ,  H04J14/0235 ,  H04J14/0275 ,  H04J14/0283 ,  H04J14/0286 ,  H04J14/0291

Abstract: Optical communication networks having multiple interconnected optical rings and optical protection switching mechanism to reduce communication delays and improve optical signal-to-noise ratios. Optical ring networks using variable optical attenuators for protection switching are also described.

Abstract translation: 具有多个互连光环的光通信网络和光保护切换机制，以减少通信延迟并提高光信噪比。 还描述了使用可变光衰减器进行保护切换的光环网络。

公开(公告)号：US20050249499A1

公开(公告)日：2005-11-10

申请号：US10622701

申请日：2003-07-21

Applicant: Heinz-Georg Krimmel ,  Harald Schmuck ,  Martin Witte ,  Bernhard Deppisch ,  Thomas Pfeiffer

Inventor： Heinz-Georg Krimmel ,  Harald Schmuck ,  Martin Witte ,  Bernhard Deppisch ,  Thomas Pfeiffer

IPC: H04B10/27 ,  H04B10/275 ,  H04B10/12 ,  H04B10/24

CPC classification number: H04B10/27 ,  H04B10/2755

Abstract: For the special conditions of optical metro ring networks with entirely passive nodes, the invention proposes an optical splitting device in front of the optical transceivers, which has an asymmetrical splitting ratio. The excess attenuation caused by the beam splitting for the two paths can be adapted to the asymmetrical fiber link attenuation of the respective paths the device is connected to.

Abstract translation: 对于具有完全无源节点的光城域环网的特殊条件，本发明提出了在光收发器前面的光分路装置，其具有不对称分频比。 由两个路径的分束引起的过度衰减可以适应设备连接到的各个路径的不对称光纤链路衰减。

公开(公告)号：US20050152695A1

公开(公告)日：2005-07-14

申请号：US11011216

申请日：2004-12-15

Applicant: Uwe Sulzberger ,  Keld Lange

Inventor： Uwe Sulzberger ,  Keld Lange

IPC: H04B10/2575 ,  H04B10/275 ,  H04W88/08 ,  H04B10/20

CPC classification number: H04W88/085 ,  H04B10/25756 ,  H04B10/2755

Abstract: A radio base station has a baseband unit (BB) and multiple RF heads (RH1, RH2), which are interconnected by means of a bi-directional two-fiber optical ring (R). Each RF head (RH1, RH2) has a delay counter (31) for determining a propagation delay (tL) on the ring (R) and a variable delay circuit (16, 26) for compensating a difference between the propagation delay on the ring and a predefined target delay (tRR). The delay counter counts (31) the delay between a test signal sent on the first fiber (F1) of the ring to the baseband unit and a received test signal looped back by the baseband unit on the second fiber (F2) of the ring.

Abstract translation: 无线基站具有通过双向双纤维光环（R）互连的基带单元（BB）和多个RF头（RH 1，RH 2）。 每个RF头（RH 1，RH 2）具有用于确定环（R）上的传播延迟（tL）的延迟计数器（31）和用于补偿环上的传播延迟（tL）之间的差异的可变延迟电路（16,26） 环和预定义的目标延迟（tRR）。 延迟计数器对在第一光纤（F 1）发送到基带单元的测试信号与由基带单元在第二光纤（F 2）上回波的接收测试信号之间的延迟计数（31） 环。

公开(公告)号：US06501871B1

公开(公告)日：2002-12-31

申请号：US09658420

申请日：2000-09-08

Applicant: Guy Sucharczuk ,  Wanda Wolodkowicz ,  Krzysztof Pradzynski

Inventor： Guy Sucharczuk ,  Wanda Wolodkowicz ,  Krzysztof Pradzynski

IPC: G02B628

CPC classification number: H04B10/27 ,  H04B10/2755

Abstract: Systems and methods are described for communications networks. A method, includes deploying a communication link, at least a portion of which is protected against active equipment failure, that includes a splitter-combiner communicatively coupled between a data drop/add device and a headend. The systems and methods provide advantages because a communication network can be protected, at least in-part, against active equipment (e.g., data drop/add device) failure, passive equipment (e.g., optical fiber) failure, and/or equipped for non-intrusive expansion of the network.

Abstract translation: 为通信网络描述了系统和方法。 一种方法包括部署通信链路，其中至少一部分被保护以防止主动设备故障，该通信链路包括通信地耦合在数据丢弃/添加设备和前端之间的分离器组合器。 系统和方法提供了优点，因为通信网络至少部分地可以被保护以防止主动设备（例如数据丢弃/添加设备）故障，被动设备（例如，光纤）故障，和/或非专用设备 网络渗透扩张。

公开(公告)号：US5886801A

公开(公告)日：1999-03-23

申请号：US719389

申请日：1996-09-24

Applicant: Mattijs Oskar Van Deventer

Inventor： Mattijs Oskar Van Deventer

IPC: G02B6/28 ,  H04B10/02 ,  H04B10/20 ,  H04B10/213 ,  H04J14/02

CPC classification number: H04B10/27 ,  H04B10/2755

Abstract: In a ring-shaped optical distributive network, provided with a central node and a number (N) of network nodes, distribution signals DS are transmitted in two signal transport directions (F, B) by the central node. For the execution of a drop-and-continue function (DC function), each network node comprises a coupling arrangement (21) provided with an optical 2.times.2 switch (28) and a tapping device (33). The switch and the tapping device are mutually coupled in such a way that the DC function can be carried out in a switchable manner in only one of both signal transport directions simultaneously. The switch (28) is turned over when distribution signals from a signal transport direction in a related network node are no longer received. Such a network is self-healing for a single network failure.

Abstract translation: 在具有中央节点和数量（N）个网络节点的环形光分配网络中，分布信号DS由中央节点在两个信号传输方向（F，B）上发送。 为了执行下拉和继续功能（DC功能），每个网络节点包括设置有光学2x2开关（28）和分接装置（33）的耦合装置（21）。 开关和分接装置以这样的方式相互耦合，使得DC功能可以在两个信号传输方向中的一个同时以可切换的方式执行。 当不再接收到来自相关网络节点中的信号传送方向的分布信号时，开关（28）被切换。 这种网络对于单个网络故障是自愈的。

公开(公告)号：US4941206A

公开(公告)日：1990-07-10

申请号：US276514

申请日：1988-11-28

Applicant: Tsutomu Sakurai ,  Yoshifumi Hara ,  Yasumasa Dougakiuchi

Inventor： Tsutomu Sakurai ,  Yoshifumi Hara ,  Yasumasa Dougakiuchi

IPC: H04B10/07 ,  H04B10/035 ,  H04B10/077 ,  H04B10/079 ,  H04B10/2507 ,  H04B10/275 ,  H04L12/42 ,  H04Q9/00

CPC classification number: H04B10/27 ,  H04B10/2755 ,  H04L12/42

Abstract: In a loop-type optical fiber transmission system composed of a master apparatus (50) and a plurality of slave apparatus (54), when an intensity of incident light (6B, 6C, 6E) to a first slave apparatus (55) is insufficient, the first slave apparatus (55) sends a status signal (CS.sub.b) informing malfunction in the light intensity to the master apparatus (50), the master apparatus upon receipt of the status signal from the first slave apparatus (55) sends a command signal to increase an output light intensity of a second slave apparatus (54) which is positioned at the upper stream of the first slave apparatus (55), and thus the intensity of the output light from the second slave apparatus (54) is increased.

Abstract translation: 在由主设备（50）和多个从设备（54）组成的环路型光纤传输系统中，当对第一从设备（55）的入射光（6B，6C，6E）的强度不足时 ，第一从设备（55）向主设备（50）发送通知光强度故障的状态信号（CSb），主设备在接收到来自第一从设备（55）的状态信号时发送命令信号 以增加位于第一从设备（55）的上游的第二从属设备（54）的输出光强度，从而增加来自第二从设备（54）的输出光的强度。