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| Number | Title | Issue Date |
| 7925160 | Optical swapping of digitally-encoded optical labels A method and a device are provided for swapping optical labels in an optical communication network. Optical information, including payload data and label data digitally encoded into the optical information, is received. At least one group of bits within the optical ... | 04/12/2011 |
| 7848649 | Method and system to frame and format optical control and data bursts in WDM-based photonic burst switched networks A wavelength-division-multiplexed based photonic burst switched (PBS) network, which includes edge and switching nodes, optically communicate information formatted into PBS control and data burst frames. Each PBS data burst frame is associated with a PBS control bur... | 12/07/2010 |
| 7817919 | Method for transmission of data packets by means of an optical burst switching network and network nodes for an optical burst switching network There is described a transmission in a burst switching network, whereby data packets are collected to form a burst which is provided with a header. A loop-free common control channel is provided in the optical burst switching network to which all network nodes have ... | 10/19/2010 |
| 7769293 | Apparatus and method for label transmission in optical packet data switching network An apparatus and method for effectively transmitting a packet data and a control data of path information about the packet data in an optical packet data switching network. The method includes grouping a plurality of wavelengths into at least two wavelength bandwidt... | 08/03/2010 |
| 7664396 | 1+1 protection method of services in OBS networks, intersection node apparatus and service protection system A 1+1 protection method of service in optical burst switching (OBS) networks, an intersection node apparatus, and protection system of service are provided. The method discloses that burst packets bearing service are transferred through two risk-independent routes, ... | 02/16/2010 |
| RE41063 | Optical layer multicasting using a multiple sub-carrier header and multicast switch with active header insertion via reflective single sideband optical processing An optical signaling header technique applicable to optical networks wherein packet routing information is embedded in the same channel or wavelength as the data payload so that both the header and data payload propagate through network elements with the same path a... | 12/29/2009 |
| 7630636 | Optical swapping of digitally-encoded optical labels A method and a device are provided for swapping optical labels in an optical communication network. Optical information, including payload data and label data digitally encoded into the optical information, is received. At least one group of bits within the optical ... | 12/08/2009 |
| 7599620 | Communications network for a metropolitan area A communications network for a metropolitan area is disclosed. The network is comprised of three basic types of nodes: an access multiplexer, a photonic switch, and a core node. The access multiplexer provides multiplexing of data packets from end-users onto at leas... | 10/06/2009 |
| 7526202 | Architecture and method for framing optical control and data bursts within optical transport unit structures in photonic burst-switched networks An optical network, which includes edge and switching nodes, optically communicate information formatted into bursts that are included in one or more optical channel transport unit (OTU) frames that are based on ITU-T recommendation G.709. The overhead portion of th... | 04/28/2009 |
| 7474853 | Non-blocking all-optical switching network dynamic data scheduling system and implementation method A non-blocking optical matrix core switching method that includes maintaining a schedule for routing data through an optical matrix core and receiving and analyzing reports from peripheral devices. The method determines whether the schedule is adequate for the curre... | 01/06/2009 |
| 7442912 | Optical logic device responsive to pulsed signals An optical logic device performs a logic operation on a plurality of input light signals. The optical logic device has a photoelectric conversion portion, in which photoreceivers for receiving input light signals are provided in parallel, that outputs an electric si... | 10/28/2008 |
| 7440696 | Data multiplexing network, wavelength multiplexer, and data multiplexing transmission method In a data multiplexing network system, a first wavelength multiplexing function unit sets a plurality of different wavelengths which correspond to a plurality of different service classes, respectively, and maps each packet into each correspondent-wavelength which c... | 10/21/2008 |
| 7433597 | Deflection routing address method for all-optical packet-switched networks with arbitrary topologies A method of deflection routing a packet in an all-optical communication network is described. Routing and destination information is contained in the address header of the packet and is generated by the originating node while still in the electrical domain before co... | 10/07/2008 |
| 7428383 | Architecture, method and system of WDM-based photonic burst switched networks An intelligent photonic burst switched (PBS) network includes edge nodes and switching nodes. The PBS edge node includes a flow classifier, flow manager, and ingress/egress PBS MAC layer components. The flow classifier classifies information received from outside th... | 09/23/2008 |
| 7424222 | Optical packet exchanger An optical packet exchanger is provided which prevents a transmittable capacity of an information signal from decreasing, and which facilitates the extracting an address signal even if a modulation speed for the information signal becomes high. An optical modulation... | 09/09/2008 |
| 7421203 | Method for transmitting packet in wireless access network based on wavelength identification code scheme A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network Controllers) to one sub-ring where the “n” is a positive integer, and a... | 09/02/2008 |
| 7415207 | Digital cross-connect A digital cross-connect (DXC) (10) comprises: a plurality of ports (30-100) for receiving/outputting signals and switching and switching means (20) for selectively cross-connecting signals applied to one port to one or more other ports. T... | 08/19/2008 |
| 7412168 | MPLS application to optical cross-connect using wavelength as a label A label switching routing protocol for establishing a datapath as a sequence of locally unique labels in an optical communications network, is provided. A wavelength on an optical cross-connect is considered as a label, or one portion of a label. Timeslots may be as... | 08/12/2008 |
| 7409158 | Large-capacity optical router using electric buffer 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 f... | 08/05/2008 |
| 7397792 | Virtual burst-switching networks A time-shared network comprising edge nodes and optical core nodes may be dynamically divided into several embedded networks, each of which covering selected edge nodes. At least one of the edge nodes may host an embedded-network controller operable to form multiple... | 07/08/2008 |
| 7394985 | Wavelength access server (WAS) architecture A wavelength access server (WAS) architecture provides aggregation of traffic streams of diverse data communication protocols as well as provision of wavelength resources in an optical transport network. The WAS provides functions such as service traffic adaptation,... | 07/01/2008 |
| 7382980 | Optical communication apparatus, optical communication information decoding method, optical switching system, and driving method for optical switching system An optical switching system is disclosed which can achieve high-speed optical switching with a simple configuration. Light from a light irradiation section is irradiated into an optical transmission line made of a material having a non-linear optical effect and disp... | 06/03/2008 |
| 7373037 | Compact wavelength-selective optical crossconnect A system and method of optically routing wavelength channels from within a plurality of optical inputs to any of a plurality of optical outputs. An optical wavelength-selective cross connect (WSXC) switch is described with a first stage of wavelength division multip... | 05/13/2008 |
| 7368700 | Optical switch apparatus and optical switching system In an optical switch apparatus which continuously carries out the route switching on frame signal light inputted from various routes while eliminating differences in output power value, a first delaying unit, which is interposed between a first branching unit and an... | 05/06/2008 |
| 7369766 | Optically boosted router Systems and techniques to optically boost a router. In general, in one implementation, the technique includes: receiving an optical signal defining a packet of data, initiating electronic routing of the optical packet, and initiating optical routing of the optical p... | 05/06/2008 |
| 7369768 | Optical access system An optical access system capable of avoiding cutoffs or interruption in the periodically transmitted signals that occur during the ranging time is provided. A first method to avoid signal cutoffs is to stop periodic transmit signals at the transmitter during the ran... | 05/06/2008 |
| 7369765 | Optical network with selective mode switching A method for communicating optical traffic in a network comprising a plurality of network nodes includes receiving traffic to be added to the network at a network node. The network is operable to communicate received traffic in an optical signal comprising one or mo... | 05/06/2008 |
| 7366413 | Modular cross connect system with 3D-MEMS for optical telecommunication networks A modular cross connect system for optical telecommunication networks has the optical unit divided in at least two main bodies with one section for connection comprising the collimators and a main commutation section with MEMS devices. The first section is a fixed p... | 04/29/2008 |
| 7356042 | Distributed ethernet hub A technique for multiplexing high speed computed data with digitized voice signals onto a fiber optic cable for transfer to a local central office. The data packets of a number of computers are networked by way of a distributed hub that extends to residences, office... | 04/08/2008 |
| 7349393 | Method and system for implementing an improved universal packet switching capability in a data switch A system and method for moving voice telephone calls through a data network. More particularly, the system and method are directed to the efficient operation of using identification numbers to route data packets through a communications node without reformatting ind... | 03/25/2008 |
| 7340168 | System and method for optically labeled packet transmission A system and method for transmitting optically labeled packets using DPSK/ASK modulation. The system comprises a transmitter including at least two modulators adapted to provide DPSK modulation of a payload portion of optically labeled packets and ASK modulation for... | 03/04/2008 |
| 7337316 | Packet authentication A data packet is conveyed between servers connected to a packet network. A first server securely distributes a list of distinct numbers to one or more authorized receiving servers. Subsequently, upon receiving a packet to be transferred, the first server selects an ... | 02/26/2008 |
| 7332234 | Optoelectronic device capable of participating in in-band traffic An optoelectronic device that has a network address (e.g., IF address) and participates in in-band traffic for purposes of performing functions (e.g., network diagnostics, network control, network provisioning, fault isolation, etc.) that are traditionally performed... | 02/19/2008 |
| 7333737 | Optical receiver There is provided an optical receiver in which a time gate can be realized with a simple, low-cost configuration, and which has few aspects that require adjustment. The optical receiver of the present invention comprises a decoding circuit in which optical signals w... | 02/19/2008 |
| 7327955 | Device and method for switching optical data for optical communication networks The field of the invention is that of switching optical signals with carrier wavelength conversion capacity, comprising a set of input ports (PE1-PEn), a set of output ports (PS1-PSn) functionally connected to the input ports so that an input signal pr... | 02/05/2008 |
| 7324647 | Quantum cryptographic key distribution networks with untrusted switches Methods and systems are disclosed in which information is securely transmitted in a network comprising untrusted network devices. Setup messages are sent to a networking device, and based on the setup messages, light directing devices are configured to direct light ... | 01/29/2008 |
| 7324752 | Optical packet switching apparatus and methods An optical packet switch switches optical packets according to bit-rates at which the optical packets are provided. For example, optical packets that are received at similar bit-rates may be routed to a destination at separate time slots over a single channel wavele... | 01/29/2008 |
| 7321558 | Method and apparatus in a computer network A method and the corresponding apparatus for multi-plexing data flows from a number of transmission units. In the method signals are sent from the transmission units and the signals are detected at inputs of a switching unit. Signals, which are detected at a point o... | 01/22/2008 |
| 7321597 | Method and apparatus for remote network management over ethernet connections One embodiment of the present invention provides a system that performs remote network management over an Ethernet connection between a local node and a remote node, wherein the Ethernet connection uses x-bit/y-bit (xB/yB) encoding. During operation, the system acce... | 01/22/2008 |
| 7317873 | Optical packet switching system An optical packet switching system in which transmission quality, reliability, and system management in optical packet switching control are improved. An optical packet switch section includes semiconductor optical amplifiers as gate switches multistage-connected on... | 01/08/2008 |
