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    • 1. 发明申请
    • ALL-OPTICAL TIME SLICE SWITCHING METHOD AND SYSTEM BASED ON TIME SYNCHRONIZATION
    • 基于时间同步的全光时间切换方法和系统
    • WO2015067211A1
    • 2015-05-14
    • PCT/CN2014/090582
    • 2014-11-07
    • TSINGHUA UNIVERSITY
    • HUA, NanZHENG, Xiaoping
    • H04Q11/06H04J3/06H04L12/721
    • H04J14/08H04J14/083H04L7/0041H04L7/0075H04Q11/0005H04Q11/0066H04Q2011/0033H04Q2011/0039H04Q2011/0045
    • An all-optical time slice switching method based on time synchronization is provided. With the method, continuous data streams in an optical network are assembled to time domain periodic optical time slices and are transmitted in an asynchronous transmission mode. Network nodes obtain high precision synchronization time via a network and control optical switches to switch arriving optical time slices to a target port at precise time points periodically, therefore all-optical switching is implemented. When a connection request arrives, an available path, a wavelength and time slots to be occupied are calculated by a source node according to information on available time slots of the optical network, and the time slots are reserved by a connection management module. After the time slots are reserved, the source node send optical time slices carrying services periodically at reserved time slots. A destination node restores the optical time slices to the data streams. Compared with an existing switching technology, the all-optical time slice switching method has remarkable advantages that reliable and flexible all-optical switching at sub-wavelength granularity can be implemented without participation of all-optical buffers and all-optical logic apparatus.
    • 提供了基于时间同步的全光时分切换方法。 利用该方法,将光网络中的连续数据流组装到时域周期性光时间片上,并以异步传输模式传输。 网络节点通过网络获得高精度的同步时间,并控制光交换机,在周期性的精确时间点将到达的光时隙切换到目标端口,从而实现全光切换。 当连接请求到达时,根据光网络的可用时隙信息由源节点计算要占用的可用路径,波长和时隙,并且时隙由连接管理模块保留。 在保留时隙之后,源节点在保留的时隙周期性地发送承载业务的光时隙。 目的地节点将光学时间片恢复到数据流。 与现有的开关技术相比,全光时分切换方法具有显着的优点,可以在不涉及全光缓冲器和全光逻辑器件的情况下实现亚波长粒度下的可靠灵活的全光开关。
    • 4. 发明申请
    • METHOD OF OPTICAL DATA TRANSMISSION
    • 光数据传输方法
    • WO2014154512A1
    • 2014-10-02
    • PCT/EP2014/055272
    • 2014-03-17
    • ALCATEL LUCENT
    • ZAMI, ThierryVACONDIO, Francesco
    • H04B10/61
    • H04Q11/0066H04B10/613H04B10/614H04B10/616H04J14/0223H04J14/06H04L43/0835H04L49/552H04Q11/0005H04Q2011/0016H04Q2011/0033H04Q2011/0083
    • Data is transmitted using multiple phase-modulated optical wavelength division multiplexed signals carrying respective synchronous data packet sequences. The data packet sequences comprise data packets within respective data packet time slots. The data packet time slots are separated by guard band time slots. Within at least one of the optical WDM signals, a data packet is detected.A time-discrete electrical signal is derived from the one optical WDM signal, by down converting the one optical WDM signal using a local oscillator optical signal. A first discrete spectral component of the time-discrete electrical signal is determined, which corresponds to a direct current component of the time-discrete electrical signal.A second discrete spectral component of the time-discrete electrical signal is determined, which corresponds to a symbol rate of the one optical WDM signal. A data packet is detected, in the case that a fraction between the spectral components exceeds a predefined threshold.
    • 使用携带相应的同步数据分组序列的多个相位调制光波分复用信号来发送数据。 数据分组序列包括相应的数据分组时隙内的数据分组。 数据包时隙由保护带时隙分隔。 在至少一个光WDM信号中,检测到数据分组。通过使用本地振荡器光信号对一个光WDM信号进行下变频,从一个光WDM信号导出时间离散电信号。 确定时间离散电信号的第一离散频谱分量,其对应于时间离散电信号的直流分量。确定时间离散电信号的第二离散频谱分量,其对应于符号 一个光WDM信号的速率。 在频谱分量之间的分数超过预定阈值的情况下,检测数据分组。
    • 8. 发明申请
    • OPTISCHE SCHALTEINRICHTUNG FÜR DATENPAKETE
    • 光开关装置用于打包数据
    • WO2006061303A1
    • 2006-06-15
    • PCT/EP2005/055917
    • 2005-11-11
    • SIEMENS AKTIENGESELLSCHAFTPRÖBSTER, WalterRÜLL, Hartwig
    • PRÖBSTER, WalterRÜLL, Hartwig
    • H04Q11/00
    • H04Q11/0005H04Q2011/0016H04Q2011/002H04Q2011/0024H04Q2011/0033H04Q2011/0047
    • Die Schalteinrichtung (SW1) teilt zunächst ankommende WDM-Signale (WMR 1 bis WMR M ) wellenlängenmäßig in Einzelsignale (λl 1 - λN M ) auf, die über optische Verbindungen / Eingangsleitungen (LR1 1 - LRN M ) Schalt- und Verzögerungselementen (SD) zugeführt werden. Die Schalt- und Verzögerungselemente (SD) verbinden jeweils eine beliebige Eingangsleitung (LR1 1 - LRN M ) mit einer beliebigen Ausgangsleitung (LT1 1 bis LTN P ) . Jeweils eines dieser Elemente schaltet ein Datenpaket (DP) der gleichen Wellenlänge (λ1 - λN) auf eine Ausgangsleitung (LT1 1 - LTN P ) durch, wobei die Verzögerung der Datenpakete (DP) stufenlos einstellbar ist. Die durchgeschalteten Datenpakete werden zu abgehenden Einzelsignalen zusammengefasst, die wiederum zu abgehenden WDM-Signalen (WMT 1 bis WMT P ) zusammengefasst werden.
    • 开关装置(SW1)第一分割进入的WDM信号(WMR 1 到WMR 中号)以波长(在单个信号升 1 - N < SUB>中号),其(经由光学连接/输入线LR1 1 - LRN 中号)分别切换和延迟元件(SD)。 开关和延迟元件(SD)分别连接任何输入线(LR1 1 - LRN 中号)(具有任意输出线LT1 1 到LTN P )。 到输出线(LT1 1 - LTN P ) - 在同一波长(λN + 1)的数据分组(DP)这些元素中的每一个通过其中的延迟 数据分组(DP)是无限可调。 电路交换的数据分组合并成单个输出信号,反过来,传出WDM信号(WMT 1 到WMT P )概括。
    • 9. 发明申请
    • AUTOMATED ACCESS NETWORK CROSS-CONNECT SYSTEM
    • 自动访问网络交叉连接系统
    • WO2006050185A2
    • 2006-05-11
    • PCT/US2005039118
    • 2005-10-28
    • UTSTARCOM INCKELLIHER TIMOTHY
    • KELLIHER TIMOTHY
    • H04M3/00H04M1/00H04M5/00H04M7/00H04M9/00
    • H04Q3/5455H04Q11/0067H04Q2011/0033H04Q2011/0039H04Q2213/1302H04Q2213/1304H04Q2213/13076H04Q2213/13106H04Q2213/13141H04Q2213/13214H04Q2213/13292H04Q2213/13302H04Q2213/1332H04Q2213/13322H04Q2213/1336
    • A system for automating cross connections in an access network. The automated cross connect system comprises of a plurality of upstream line interface circuits adapted for connection to upstream communication links, and a plurality of downstream line interface circuits adapted for connection to downstream communication links. The upstream and downstream line interface circuits are interconnected by an automated cross connect switch that selectively couples particular upstream line interface circuits to particular downstream line interface circuits, in response to routing commands sent from a command center. Thus, the automated cross connect system selectively establishes a bi-directional communication path between the upstream line interface circuits and the downstream line interface circuits, thereby providing a communication path between a selected upstream communication link and downstream communication link. The automated cross connect switch may be implemented in either a space or time multiplexing devices, such as a physical layer router, which comprises an array of cross connected multiplexers, or a time domain multiplexer switch, which composes an array of serializers connected to a time division multiplexed bus.
    • 用于在接入网络中自动进行交叉连接的系统。 自动交叉连接系统包括适于连接到上游通信链路的多个上游线路接口电路,以及适于连接到下游通信链路的多个下游线路接口电路。 上游和下游线路接口电路通过自动交叉连接交换机互连,自动交叉连接交换机响应于从命令中心发送的路由命令,将特定的上游线路接口电路选择性地耦合到特定的下游线路接口电路。 因此,自动交叉连接系统选择性地在上游线路接口电路和下游线路接口电路之间建立双向通信路径,由此提供所选择的上游通信链路和下游通信链路之间的通信路径。 自动交叉连接开关可以在空间或时间复用设备中实现,例如物理层路由器,其包括交叉连接的多路复用器阵列或时域多路复用器开关,其构成连接到时间的串行器阵列 多路复用总线。
    • 10. 发明申请
    • NON-BLOCKING, SCALABLE OPTICAL ROUTER ARCHITECTURE AND METHOD
    • 非阻塞,可扩展的光学路由器架构和方法
    • WO0241663A3
    • 2004-02-26
    • PCT/US0151237
    • 2001-10-29
    • YOTTA NETWORKS INCMILES LARRY LTAMIL LAKSHMAN SROTHROCK SCOTT APOSEY NOLAN J JRAICKLEN GREGORY H
    • MILES LARRY LTAMIL LAKSHMAN SROTHROCK SCOTT APOSEY NOLAN J JRAICKLEN GREGORY H
    • H04L12/56H04Q11/00H04Q11/04
    • H04L45/00H04L45/302H04L45/62H04L47/10H04L47/2433H04L47/2441H04L47/33H04L49/101H04L49/1523H04L49/205H04L49/254H04L49/3009H04L49/3081H04L49/357H04L49/503H04L2012/5662H04Q11/0005H04Q11/0062H04Q11/0066H04Q11/0071H04Q2011/0024H04Q2011/0033H04Q2011/0039H04Q2011/005H04Q2011/0073H04Q2011/0079H04Q2011/0084
    • A system and method for providing non-blocking routing of optical data through a telecommunications router that allows full utilization of available capacity. The router includes a number of data links (20) that carry optical data packets to and from an optical router (50). The optical router (50) includes a number of ingress edge units (60) coupled to an optical switch core (30) coupled further to a number of egress edge units (160). The ingress edge units (60) receive the optical data packets from the data links (20) and aggregate the optical data packets into "super packets" where each super packet is to be routed to a particular destination egress edge unit (160). The super packets are sent from the ingress edge units (60) to an optical switch fabric (70) within the optical switch core (30) that routes each super packet through the optical switch fabric (70) to the super packet's particular destination egress edge unit (160) in a non-blocking manner (i.e., without contention or data loss through the optical switch fabric (70)). This routing is managed by a core controller (40) that monitors flow information at each ingress edge unit (60) to control the super packet generation and transmission to the optical switch fabric (70) and schedules each super packet to exit the optical switch fabric (70) so as to avoid contention among the plurality of super packets in the transmission between the optical switch fabric (70) and the egress edge units (160). The egress edge units (160) receive the super packets, de-aggregate the super packets into the original optical data packets, and transmit the optical data packets to the data lines (20).
    • 一种用于通过允许充分利用可用容量的电信路由器提供光学数据的非阻塞路由的系统和方法。 路由器包括向光路由器(50)携带光数据分组的多个数据链路(20)。 光路由器(50)包括耦合到进一步耦合到多个出口边缘单元(160)的光交换机核心(30)的多个入口边缘单元(60)。 入口边缘单元(60)从数据链路(20)接收光数据分组,并将光数据分组聚合成“超分组”,其中每个超分组将路由到特定的目的出口边缘单元(160)。 超级分组从入口边缘单元(60)发送到光交换机核心(30)内的光交换结构(70),其将每个超级分组通过光交换结构(70)路由到超分组的特定目的出口边缘 单元(160)以非阻塞方式(即,不通过光交换结构(70)的争用或数据丢失))。 该路由由核心控制器(40)管理,核心控制器(40)监视每个入口边缘单元(60)处的流信息,以控制超级分组生成和传输到光交换结构(70)并且调度每个超分组以退出光交换结构 (70),以避免在光交换结构(70)和出口边缘单元(160)之间的传输中的多个超级分组之间的争用。 出口边缘单元(160)接收超级分组,将超分组聚合成原始光数据分组,并将光数据分组发送到数据线(20)。