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    Two-fiber optical ring network
    1.
    发明授权
    Two-fiber optical ring network 失效
    双光纤光环网

    公开(公告)号：US07280754B2

    公开(公告)日：2007-10-09

    申请号：US10632480

    申请日：2003-08-01

    申请人： Sang-Hyun Doh ,  Ki-Cheol Lee ,  Yun-Je Oh

    发明人： Sang-Hyun Doh ,  Ki-Cheol Lee ,  Yun-Je Oh

    IPC分类号： H04J14/02

    CPC分类号： H04J14/0297 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0283 ,  H04J14/0287 ,  H04J14/0291 ,  H04J14/0295

    摘要： Disclosed is a two-fiber optical ring network having a plurality of nodes linked by first and second fiber optic links, wherein each node comprises a first splitting section for splitting optical signals from optical signals traveling through the first fiber into the protection channels; a first add/drop section for performing adding and/or dropping optical signals passing through the first splitting section to a plurality of channels; a first switching section for combining optical signals in the protection channels to the first fiber when there is no link failure between adjacent nodes and for combining optical signals in the protection channels to the second fiber when there is a link failure between adjacent nodes; and, a controlling section for identifying whether or not the optical link failure occurs in the fibers and for generating a control signal to activate a restoration process according to the identified outcome.

    摘要翻译： 公开了具有由第一和第二光纤链路链接的多个节点的双光纤光环网络，其中每个节点包括第一分离部分，用于将从第一光纤传播的光信号的光信号分离成保护信道; 用于执行将通过所述第一分离部分的光信号添加和/或丢弃到多个信道的第一加/减部分; 第一切换部分，当相邻节点之间没有链路故障时，将保护信道中的光信号与第一光纤组合，并且当相邻节点之间存在链路故障时，将保护信道中的光信号组合到第二光纤; 以及控制部分，用于识别在光纤中是否发生光链路故障，并且根据所识别的结果产生用于激活恢复过程的控制信号。

    Optical multi-ring network for burst data communication
    2.
    发明授权
    Optical multi-ring network for burst data communication 有权
    用于突发数据通信的光多环网络

    公开(公告)号：US07280758B2

    公开(公告)日：2007-10-09

    申请号：US10456144

    申请日：2003-06-06

    申请人： Sang-Hyun Doh ,  Se-Kang Park ,  Ki-Cheol Lee ,  Yun-Je Oh ,  Byung-Chang Kang

    发明人： Sang-Hyun Doh ,  Se-Kang Park ,  Ki-Cheol Lee ,  Yun-Je Oh ,  Byung-Chang Kang

    IPC分类号： H04J14/02 ,  H04B10/20

    CPC分类号： H04Q11/0066 ,  H04Q2011/0016 ,  H04Q2011/0064 ,  H04Q2011/0084 ,  H04Q2011/0092

    摘要： An optical multi-ring network for burst data communication is disclosed. The multi-ring network includes a plurality of optical single-ring networks having a plurality of optical add/drop routers connected with each other through fiber links, and a core optical router for supporting communication between the optical single-ring networks. The core optical router includes a wavelength division demultiplexing section for demultiplexing optical signals received from the each single-ring network and outputting the demultiplexed optical signals as channels whose wavelengths are different from each other; a branching section for branching off and outputting a portion of each channel; and a switching section for switching each channel to a path directed to the destination of each channel according to a first control signal. The core optical router also includes a contention resolution block for aligning channels in a chronological order, which are output at the switching section and directed to identical destinations, according to a second control signal; a wavelength division multiplexing section for collecting channels which pass through the contention resolution block according to destination and outputting the collected channels as multiplexed optical signals; and a controller for recognizing a destination of each branched channel input from the branching section and outputting a third control signal to the switching section and the contention resolution block so as to a low each channel to be directed to the destination of each channel. A frame transmitted on the multi-ring network includes a burst datum consisting of a plurality of packet data, and a header datum indicating a destination of the burst datum.

    摘要翻译： 公开了一种用于突发数据通信的光多环网络。 多环网络包括具有通过光纤链路彼此连接的多个光分插路由器的多个光单环网络，以及用于支持光单环网络之间的通信的核心光路由器。 核心光路由器包括波分多路复用部分，用于对从每个单环网络接收的光信号进行解复用，并将解复用的光信号作为波长彼此不同的信道输出; 分支部分，用于分支和输出每个通道的一部分; 以及切换部分，用于根据第一控制信号将每个信道切换到指向每个信道的目的地的路径。 核心光路由器还包括用于根据第二控制信号按照时间顺序对准信道的竞争解决块，其在切换部分输出并被引导到相同的目的地; 波分复用部分，用于收集根据目的地通过竞争解决块的信道，并将所收集的信道作为复用的光信号输出; 以及控制器，用于识别从分支部分输入的每个分支信道的目的地，并将第三控制信号输出到切换部分和争用解决块，以便将每个信道的低通道指向每个信道的目的地。 在多环网络上发送的帧包括由多个分组数据组成的突发数据，以及指示突发数据的目的地的头部数据。

    Wavelength division multiplexing optical switching system
    3.
    发明授权
    Wavelength division multiplexing optical switching system 有权
    波分复用光交换系统

    公开(公告)号：US07228071B2

    公开(公告)日：2007-06-05

    申请号：US10446463

    申请日：2003-05-28

    申请人： Se-Kang Park ,  Ki-Cheol Lee ,  Sang-Hyun Doh ,  Yun-Je Oh

    发明人： Se-Kang Park ,  Ki-Cheol Lee ,  Sang-Hyun Doh ,  Yun-Je Oh

    IPC分类号： H04J14/02

    CPC分类号： H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/002 ,  H04Q2011/0024

    摘要： Disclosed is a wavelength division multiplexing optical switching system, which is connected with a plurality of nodes of an optical network and supports communication between the nodes. The optical switching system includes a wavelength division demultiplexing unit which demultiplexes optical signals received from each of the plurality of nodes and outputs them as channels with different wavelengths. A routing unit which classifies the channels in accordance with destinations thereof. A fixed wavelength converting unit which converts the classified channels into channels of a single wavelength, the single wavelength being allocated in accordance with corresponding starting places. A wavelength division multiplexing unit which collects the wavelength-converted channels in accordance with destinations and then outputs them as multiplexed optical signals.

    摘要翻译： 公开了一种波分复用光交换系统，其与光网络的多个节点连接并且支持节点之间的通信。 光交换系统包括波分多路复用单元，其对从多个节点中的每一个接收的光信号进行解复用，并将其作为具有不同波长的信道输出。 路由单元，其根据其目的地对信道进行分类。 固定波长转换单元，其将分类的信道转换成单个波长的信道，单个波长根据相应的起始位置被分配。 波分复用单元，根据目的地收集波长转换的信道，然后作为复用的光信号输出。

    Large-capacity optical router using electric buffer
    4.
    发明授权
    Large-capacity optical router using electric buffer 失效
    大容量光路由器采用电动缓冲器

    公开(公告)号：US07409158B2

    公开(公告)日：2008-08-05

    申请号：US10638983

    申请日：2003-08-12

    申请人： Ki-Cheol Lee ,  Yun-Je Oh ,  Sang-Hyun Doh ,  Jong-Kwon Kim

    发明人： Ki-Cheol Lee ,  Yun-Je Oh ,  Sang-Hyun Doh ,  Jong-Kwon Kim

    IPC分类号： H04J14/00

    CPC分类号： H04J14/0212 ,  H04J14/0209 ,  H04J14/0227 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/002 ,  H04Q2011/0024 ,  H04Q2011/0039

    摘要： A large-capacity optical router is disclosed that exchanges data traffic such as IP packets, Ethernet frames, etc., at high speed in units of optical frames. The large-capacity optical router uses an electric buffer including input ports, output ports, an add port for inputting data received from a lower IP router, a drop port for outputting data to the lower IP router, a wavelength division demultiplexing section for wavelength-division-demultiplexing wavelength signals input through the input ports and the add port, an input interface section for converting optical frames from the wavelength division demultiplexing section into electric signals, and an optical switch for performing a high-speed switching of the optical frames from the input interface section. The large-capacity optical router also includes an output interface section for processing the optical frames output from the optical switch, a wavelength division multiplexing section for wavelength-division-multiplexing outputs of the output interface section and transmitting the multiplexed outputs to another large-capacity optical router, a drop interface section for processing the optical frames from the wavelength division multiplexer to the lower IP router, a header processing section for recognizing header information, an optical switch control section for controlling a connection state of the optical switch, a header reinserting section for reinserting headers into outputs of the optical router, and an edge traffic aggregator including of an ingress part for converting IP packets input from the lower IP router into optical frames and an egress part for converting the optical frames into IP packets and transmitting the converted packets to the IP router.

    摘要翻译： 公开了以光学单元为单位高速交换诸如IP分组，以太网帧等的数据业务的大容量光路由器。 大容量光路由器使用电气缓冲器，包括输入端口，输出端口，用于输入从较低IP路由器接收的数据的添加端口，用于向较低IP路由器输出数据的丢弃端口，用于波分复用的波分复用部分， 通过输入端口和加法端口输入的除法分离波长信号，用于将来自波分解复用部分的光学帧转换为电信号的输入接口部分，以及用于执行光学帧的高速切换的光开关 输入接口部分。 大容量光路由器还包括用于处理从光开关输出的光帧的输出接口部分，用于对输出接口部分的输出进行波分复用的波分复用部分，并将多路复用输出发送到另一大容量 光路由器，用于处理从波分多路复用器到下IP路由器的光帧的分接口部分，用于识别头信息的报头处理部分，用于控制光开关的连接状态的光开关控制部分， 用于将标题重新插入到光路由器的输出中的边缘业务聚合器，以及包括用于将从下行IP路由器输入的IP分组转换为光帧的入口部分的边缘业务聚合器和用于将光帧转换成IP分组的出口部分， 数据包到IP路由器。

    Optical ring network for burst data communication
    5.
    发明授权
    Optical ring network for burst data communication 失效
    用于突发数据通信的光环网络

    公开(公告)号：US07272311B2

    公开(公告)日：2007-09-18

    申请号：US10456166

    申请日：2003-06-06

    申请人： Sang-Hyun Doh ,  Ki-Cheol Lee ,  Se-Kang Park ,  Yun-Je Oh

    发明人： Sang-Hyun Doh ,  Ki-Cheol Lee ,  Se-Kang Park ,  Yun-Je Oh

    IPC分类号： H04J14/02

    CPC分类号： H04Q11/0066 ,  H04Q2011/0092

    摘要： Disclosed is an optical ring network for burst data communication having a plurality of core nodes connected with each other through fiber links. Each core node comprises a demultiplexer for demultiplexing a received optical signal into a plurality of channels by wavelength, an add/drop section for dropping channels selected from the plurality of channels based on a control signal, a multiplexer for multiplexing and outputting the plurality of channels inputted through the add/drop section, a branching section arranged between the demultiplexer and the add/drop section for branching off channel portions from each channel, and a controller for recognizing destinations for frames with each channel modulated and outputting the control signal for dropping the selected channels to the add/drop section.

    摘要翻译： 公开了一种用于突发数据通信的光环网络，其具有通过光纤链路彼此连接的多个核心节点。 每个核心节点包括用于通过波长将接收的光信号解复用为多个信道的解复用器，用于基于控制信号丢弃从多个信道中选择的信道的加/减部分，用于复用和输出多个信道的多路复用器 通过加法/放置部分输入的分支部分，布置在解复用器和加法/分支部分之间用于从每个信道分支信道部分的分支部分，以及用于识别每个信道被调制的帧的目的地的控制器，并且输出用于丢弃的信道的控制信号 选择的频道到添加/删除部分。

    Method for assigning wavelengths in wavelength division multiplexing ring communication network
    7.
    发明授权
    Method for assigning wavelengths in wavelength division multiplexing ring communication network 失效
    在波分复用环通信网络中分配波长的方法

    公开(公告)号：US07277632B2

    公开(公告)日：2007-10-02

    申请号：US10619694

    申请日：2003-07-15

    申请人： Sang-Hyun Doh ,  Yun-Je Oh

    发明人： Sang-Hyun Doh ,  Yun-Je Oh

    IPC分类号： H04B10/00

    CPC分类号： H04J14/0283 ,  H04J14/0227 ,  H04J14/0241

    摘要： A method for assigning a predetermined wavelength between two different nodes in a wavelength division multiplexing (WDM) ring communication network that has an N number of nodes and at least one pair of optical fibers sequentially connecting the N number of nodes is disclosed. A matrix is formed by an algorithm representing optical-path configuration and wavelength assignment for nodes representing three cases: (1) when the number of nodes is an even number; (2) when the number of nodes is increased; and (3) for recovery from network-cut failures.

    摘要翻译： 公开了一种在具有N个节点的波分多路复用（WDM）环通信网络中的两个不同节点之间分配预定波长的方法，以及顺序连接N个节点的至少一对光纤。 通过表示用于表示三种情况的节点的光路配置和波长分配的算法形成矩阵：（1）当节点数是偶数时; （2）节点数量增加时; 和（3）从网络切断故障中恢复。

    Apparatus and method for controlling upstream traffic for use in ethernet passive optical network
    9.
    发明申请
    Apparatus and method for controlling upstream traffic for use in ethernet passive optical network 审中-公开
    用于以太网无源光网络的上行流量控制装置和方法

    公开(公告)号：US20050053085A1

    公开(公告)日：2005-03-10

    申请号：US10864017

    申请日：2004-06-09

    申请人： Sang-Hyun Doh ,  Young-Seok Kim ,  Yun-Je Oh

    发明人： Sang-Hyun Doh ,  Young-Seok Kim ,  Yun-Je Oh

    IPC分类号： H04L12/28 ,  H04L12/56 ,  H04Q11/00 ,  H04L12/413

    CPC分类号： H04Q11/0067 ,  H04Q11/0066 ,  H04Q2011/0064

    摘要： Apparatus and method for controlling upstream traffic for use in EPON (Ethernet Passive Optical Network) system. The method for controlling upstream data traffic transferred from an ONU (Optical Network Unit) to an OLT (Optical Line Termination) in an EPON (Ethernet Passive Optical Network) system including an ODN (Optical Distribution Network) connected to one OLT, and a plurality of ONUs connected to the ODN and also respectively connected to a plurality of subscribers, includes the steps of a) controlling the OLT to determine an ONU serving as an upstream transmission authority allocation target; b) controlling the OLT to insert information of a predetermined ONU serving as an upstream transmission authority allocation target ONU in a downstream data frame transferred to the ONU, and transmitting the downstream data frame having the inserted ONU information; and, c) controlling the upstream transmission authority allocation target ONU having received the downstream data frame to transmit upstream data. Therefore, limited traffic resources can be used equally by a plurality of ONUs, resulting in the prevention of data collision among upstream signals.

    摘要翻译： 用于EPON（以太网无源光网络）系统中控制上行业务的装置和方法。 在包括连接到一个OLT的ODN（光分配网络）的EPON（以太网无源光网络）系统中控制从ONU（光网络单元）传送到OLT（光线路终端）的上行数据业务的方法，以及多个 连接到ODN并且还分别连接到多个用户的ONU包括以下步骤：a）控制OLT以确定用作上游传输授权分配目标的ONU; b）控制OLT在传送到ONU的下游数据帧中插入用作上行传输权限分配目标ONU的预定ONU的信息，并发送具有插入的ONU信息的下游数据帧; 以及c）控制已经接收到下游数据帧的上行传输权限分配目标ONU以发送上行数据。 因此，有限的业务资源可以被多个ONU同等地使用，从而防止上游信号之间的数据冲突。