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| Number | Title | Issue Date |
| 8149693 | Method of implementing association in automatic switched optical network (ASON) A method of implementing association in an Automatic Switched Optical Network. When an initial node of the 1+1 protection service is outside the ASON, it associates the primary service and the slave service to realize 1+1 protection. This invention includes: a node ... | 04/03/2012 |
| 8089865 | Multicast path management and protection Provided is a multicast path management method for a connectionless communication. Also provided is a path protection function which is effective when a path has failed. A network is formed by a trunk and a branch path. The multicast path is managed by end-to-end an... | 01/03/2012 |
| 8072878 | Packet ring network system, packet transfer system, redundancy node, and packet transfer program In a ring network to which a plurality of nodes are connected, even though a failure occurs in a link between a node and a client apparatus (a user terminal) or a node itself, communication between the node and the client apparatus can be achieved. Nodes (105... | 12/06/2011 |
| 8018842 | Counter multi-failure system and common link terminal device used therein Arrangements dealing with multiple link failures occurring in a communication network including a first ring and a second ring connected to the first ring by sharing part of a link in the first ring as a common link. Included is stored link failure information inclu... | 09/13/2011 |
| 8014276 | Scheduling system and scheduling method for the same A scheduling system may include a read sequence management table that includes a group of positions for arranging data received from a group of lines and a schedule management table to store a group of peak rate values that are each associated with one of the group ... | 09/06/2011 |
| 8004967 | Ring network routing method and ring network node The present invention discloses a method for routing in a ring network, the ring network comprising multiple connected nodes, wherein, the method includes: each node in the ring network acquiring topology information of the ring network, obtaining under-ring routing... | 08/23/2011 |
| 7990851 | Method, apparatus and computer program product for redundant ring communication Sets of communication modules each have a pair of ring-channel ports for a ring-configured channel in a network, a peripheral device port for peripheral device data, and dual-ring ports for an inter-ring channel for the pair of modules. First and second ones of a se... | 08/02/2011 |
| 7974185 | Three fiber line switched ring A 3 fiber line switched ring (3FLSR) provides protection for (optical) transmission networking wherein N nodes are connected via 3 lines (or optical fibers) in a ring topology. Two of the three fibers form a main transmission line and may transmit in one direction i... | 07/05/2011 |
| 7929427 | Ring rapid spanning tree protocol In a method for enabling facilitation of re-convergence, designation information for a first port of each one of a plurality of bridges in a multi-bridge ring is received and designation information for a second port of each one of a plurality of bridges in a multi-... | 04/19/2011 |
| 7920465 | Method and apparatus for transmitting the control signal of resilient packet ring media access control The present invention provides a method and apparatus for transmitting control signal of Resilient Packet Ring (RPR) Medium Access Control (MAC), including: encapsulating a control signal of RPR MAC interface to be transmitted into an RPR data frame of predefined fo... | 04/05/2011 |
| 7843813 | Managing hierarchically organized subscriber profiles Apparatus are provided for managing hierarchically organized subscriber profiles. According to one embodiment, a router includes multiple virtual interfaces and a policy engine. The virtual interfaces define connections between the router and corresponding subscribe... | 11/30/2010 |
| 7778162 | Multiple service ring of N-ringlet structure based on multiple FE, GE and 10GE A data transmission apparatus used in a multiple service ring includes at least two nodes coupled to at least one aggregate pipe and at least one tributary. The data transmission apparatus includes a tributary RX framer coupled to a tributary for deframing data fram... | 08/17/2010 |
| 7668083 | Systems and methods for forwarding data in a communications network A communications network (100) includes at least one control station (160) and a group of network nodes (110, 120, 140). The at least one control station (160) generates batches of forwarding tables (300), where each batch of forwa... | 02/23/2010 |
| 7660238 | Mesh with protection channel access (MPCA) A method for a communications network with a protect channel transmitting protect channel data and working channel transmitting working channel data includes transmitting the working channel data via the protect channel upon a disruption in the working channel, and ... | 02/09/2010 |
| 7660237 | Synchronous clock supply system and synchronous clock supply method A switching unit (1011) receives video data (103) sent from a device (102), and sends an ATM cell synchronized with the clock to switching units (1012-1014) by a signal (including optical data) cont... | 02/09/2010 |
| 7649836 | Link state machine for the advanced switching (AS) architecture A link state machine for the Advanced Switching (AS) Architecture includes added transition sub-states. Transition events typically handled in AS link states are handled in the transition sub-states. Separating the transition events and flow from the link states int... | 01/19/2010 |
| 7633857 | Node and method of setting backup path A node in a first ring stores therein connection information about connecting nodes between a second ring and a third ring. Upon receiving a route of a working path by a signaling, the node determines any one of nodes composing the second ring as a branch node. If t... | 12/15/2009 |
| 7623446 | MPLS virtual rings A virtual ring representing a community of interest is constructed from an interconnected mesh of nodes in a packet network. The virtual ring instantiates ring labels in respective forwarding tables for each node in the virtual ring and then advertises the ring labe... | 11/24/2009 |
| 7616559 | Multi-link network architecture, including security, in seamless roaming communications systems and methods A communications system provides for secure communications of information over multiple communications links. The system includes a client device, a server device, and at least one, and typically multiple, available and usable communications channels, elements, mode... | 11/10/2009 |
| 7573814 | Method and apparatus for protection of an optical network A method and apparatus for mesh based protection of an optical network is described. A method comprises protecting a first set of one or more optical sub-channels with automatic protection switching, utilizing a second and third set of one or more optical sub-channe... | 08/11/2009 |
| 7564779 | Ring rapid spanning tree protocol In a method for enabling facilitation of re-convergence, designation information for a first port of each one of a plurality of bridges in a multi-bridge ring is received and designation information for a second port of each one of a plurality of bridges in a multi-... | 07/21/2009 |
| 7542414 | Computing a diverse path while providing optimal usage of line protected links Methods and apparatus for enabling line-protected links to be included in path-protected segments of a unidirectional path-switched ring are disclosed. According to one aspect of the present invention, a method for computing a circuit path that includes a primary pa... | 06/02/2009 |
| 7486614 | Implementation method on multi-service flow over RPR and apparatus therefor A data transmission apparatus for implementing multiple service flow in a multiple service ring is described. The apparatus includes a trunk pipe and at least two nodes each with at least one flow. The apparatus also includes a flow Rx framer for converting data rec... | 02/03/2009 |
| 7471625 | Fault recovery system and method for a communications network A source node of a network transmits a path setup message for requesting a traffic path to a destination node. First and second nodes, located between the source and destination nodes, establishes first and second parallel transport paths on a first fault recovery l... | 12/30/2008 |
| 7443788 | Method and apparatus for improving performance of a loop network A method and apparatus for improving performance of a loop network, in particular a Fiber Channel Arbitrated Loop. The loop network has two loops and a plurality of dual-ported devices each with one port on each loop. The method includes selectively bypassing redund... | 10/28/2008 |
| 7428211 | Transmission apparatus and method of multi-service tributaries over RPR A data transmission apparatus used in a multiple service ring is described. The apparatus includes at least two nodes coupled to at least one aggregate pipe and at least one tributary. The apparatus also includes a tributary TX framer for converting data received fr... | 09/23/2008 |
| 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 |
| 7400574 | Method and apparatus for managing a loop network A method and apparatus for managing a loop network, the loop network (200) including at least one loop (206, 208), a plurality of devices (210) connected to the at least one loop (206, 208) via ports (211, 212), wherein at least tw... | 07/15/2008 |
| 7376138 | Optical communications network In a communications network, a node receives a transit packet. The priority assigned to the transit packet is determined and when it has a low priority then the transit packet is removed and a higher priority packet is inserted in the resulting vacancy. ... | 05/20/2008 |
| 7372807 | Method and apparatus for multiplex transmission In a transmission network including multiplex transmission units A, F, G, D and E, when the line breakage has occurred on the OC-12 transmission path of the direction from unit A to unit F, the unit F detects the signal coming in from the OC-12 path indicative of th... | 05/13/2008 |
| 7372806 | Fault recovery system and method for a communications network In a communications network where first and second nodes are interconnected by communication links, a source node transmits a path setup message for requesting a traffic path to a destination node. Each of the first and second nodes includes routing control means fo... | 05/13/2008 |
| 7369769 | Ethernet passive optical network ring and its method of authorization and collision detection An Ethernet passive optical network (EPON) ring for providing protection against fiber failures. The optical network unit (ONU) is coupled to the ring fiber by a three-port passive optical splitting module that has three two-way optical passages. By the three two-wa... | 05/06/2008 |
| 7369780 | Remodulating channel selectors for WDM optical communication systems The present invention provides a remodulating channel selector for a wavelength division multiplexed optical communication system. The remodulating selector receives a WDM input signal, selects a particular optical channel from the WDM signal and places the informat... | 05/06/2008 |
| 7366115 | Multiplex transmission system with in-circuit addressing The present invention is related to a transmission system for sending digital data on a digital bus (1), to which are connected a number of master and slave modules. The system is characterized by the fact that a number of modules may comprise two connectors ... | 04/29/2008 |
| 7359329 | Device for detecting failure of communication network Of a plurality of segments of traffic inside monitor target equipment, a flow rate of abnormal traffic is computed using traffic flow rate information in each interface of the monitor target equipment disposed within a communication network, and a network failure is... | 04/15/2008 |
| 7355978 | Method for implementing an OAM function by exchanging request-reply packets between stations of a RPR network, and corresponding packet frames Described is a method extending the OAM functionality in the RPR networks through a new OAM loopback procedure of request-reply type together with the definition of a new RPR OAM loopback frame. The OAM loopback function allows any RPR station to check the reachabil... | 04/08/2008 |
| 7356628 | Packet switch with multiple addressable components An integrated circuit on which are implemented a number of devices that conform to the Rapidio network architecture. Included in the integrated circuit are two addressed RapidIO devices and switching devices which provide 24 switching ports. The devices have a packe... | 04/08/2008 |
| 7352692 | Resource reservation scheme for path restoration in an optical network A method for reserving resources for restoration of a failed virtual path in a mesh optical network is defined. The method in one embodiment, defines multiple classes of service for the virtual path by allocating certain path performance, path implementation and pat... | 04/01/2008 |
| 7352729 | Wireless communication system for multi-hop connection, source station, radio station and pilot signal used therein A destination station in a wireless communication system for a multi-hop connection selects a transmission path having a minimum total of required transmission power values of respective stations on the transmission path among candidates of the transmission path fro... | 04/01/2008 |
| 7349329 | Network system, data transmitter-receiver and failure location/compensation method A data transmitter-receiver 30 arranged on a ring network to form a node includes a normal-direction data transmit/receive unit 19, a reverse-direction data transmit/receive unit 20, a buffer control unit 13, a controller 14, and c... | 03/25/2008 |
