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| Number | Title | Issue Date |
| 7907530 | Determining link costs Embodiments of a system with a first network device and at least first and second links connecting the first network device and one or more other network devices are disclosed. The first network device determines the costs of the first and the second links using the... | 03/15/2011 |
| 7606161 | Distributing information across equal-cost paths in a network A method of distributing data across a network having a plurality of equal-cost paths. Also, a device for distributing data over a network according to the method. The data, which is typically contained in data packets, may be distributed based on at least one attri... | 10/20/2009 |
| 7453813 | Methods for constructing PNNI networks with optimized architecture The specification describes techniques for evaluating important network performance parameters, for example, call set-up time, for private network-to-network (PNNI) interfaces. These performance parameters are used to determine the optimum size of the peer groups in... | 11/18/2008 |
| 7403484 | Switching fabrics and control protocols for them A network unit for use in a switching fabric stores for each network unit in the switching fabric a respective change identification number. In each unit this number is incremented on each change of state. The unit broadcasts protocol packets which indicates increme... | 07/22/2008 |
| 7403485 | Optimum construction of a private network-to-network interface The number of nodes in a private network-to-network interface may be very large. These nodes can be organized in two or more hierarchical levels. Network performance parameters, for example, call set-up time, may be used to determine the optimum number of hie... | 07/22/2008 |
| 7366184 | SVC/SPVC with L3 IP forwarding In a multi-service network, layer 2 traffic such as IP traffic according to the invention is carried over ATM SVCs or SPVCs. Methods of setting up such connections using the PNNI protocol are also discussed. Using enhancements to the standard ATM SPVC/SVC signaling ... | 04/29/2008 |
| 7353294 | Method for estimating a traffic matrix in a communication network using stationary data The present invention comprises methods for increasing the rank of the routing matrix of an IP network by systematically altering link weights in the IP network. A full rank routing matrix may be used with further methods in accordance with the present invention to ... | 04/01/2008 |
| 7330436 | Method of selecting transmission paths and a communication network using the method The present invention provides a method of determining or selecting a path for transmitting data in packets in an Internet Protocol communication network and a communication network using the method. The method comprises predetermining a limited number of paths by r... | 02/12/2008 |
| 7327695 | Centralized link-scope configuration of an internet protocol (IP) network A method of configuring link-scope-type managed objects in IP-based networks from a centralized management node. An IP-based network includes at least one management station, a set of network nodes, and communication links between the network nodes and between the m... | 02/05/2008 |
| 7310310 | Multi-link SAR for bonding ATM cell-streams Systems and methods are described for bonding asynchronous transfer mode permanent virtual circuits using a multi-link segmentation and reassembly sublayer. A method includes: transforming a plurality of streams of asynchronous transfer mode cells into a stream of b... | 12/18/2007 |
| 7289430 | Equipment monitoring system line swap fast recovery method An equipment monitoring system line swap fast recovery method by installing a link detection mechanism in an Ethernet switch of an equipment monitoring system in an Ethernet between equipments at respective terminals of the Ethernet and a monitor equipment for enabl... | 10/30/2007 |
| 7263360 | System and method for multi-platform, multimedia information and communication network-independent servers The inventive system and method provide an integrated information and communication network to any number of associated communication terminals. The invention includes at least one home system or server containing a plurality of applications for performing communica... | 08/28/2007 |
| 7230950 | MPOA system and its shortcut communication control method, and shortcut communication control program An MPOA system for establishing communication by using layer 3 protocol on an ATM network, in which data about the layer 3 address of a source of data packets is added to an address resolution request packet which is transmitted in order to establish a... | 06/12/2007 |
| 7212493 | Controlling network traffic In an ATM exchange, a cell transmission control section transmits an ATM cell to a transmission path of an ATM network A traffic monitor monitors traffic of the cell transmissions. A statistical process section performs a temporal statistical process on the result o... | 05/01/2007 |
| 7206281 | Calculating physical routes in a communication network A system operating on a communication network for mapping service-level information comprising logical connections to physical-level information comprising working physical paths of the logical connections, where the physical-level information is obscured by activat... | 04/17/2007 |
| 7200117 | Method of optimizing network capacity and fault tolerance in deadlock-free routing A system for selecting routing information from a routing table describing alternative routes between end nodes. The routing table represents a set of minimum cost, deadlock-free routes between end nodes. The selected routing information is included in forwarding ta... | 04/03/2007 |
| 7194002 | Peer-to-peer based network performance measurement and analysis system and method for large scale networks A network performance (e.g., latency and bandwidth) measurement infrastructure for large scale networks based on self-organized probing groups of devices. Each group of devices has a lead device that measures network characteristics, and then shares the measurement ... | 03/20/2007 |
| 7181540 | Secure segregation of data of two or more domains or trust realms transmitted through a common data channel A system for transporting data comprising a first domain comprising a first plurality of filters in a first communication channel, the first communications channel including a common portion, the first plurality of filters employing a first plurality of filtering cr... | 02/20/2007 |
| 7165115 | Method for controlling the disposition of an incoming call based on the loading status of a route and on a test of each link along the route Disclosed are network management procedures that apply measurements of traffic load to achieve greater efficiency in the operation of the network. In a method for deciding whether to route an incoming call on a selected potential service route, the potential service... | 01/16/2007 |
| 7155215 | System and method for upgrading service class of a connection in a wireless network A system and method for upgrading service class of a connection in a wireless network includes identifying a congested CoS in a sector of a wireless network. Bandwidth availability in the sector is determined at an enhanced CoS in relation to the congested CoS. A co... | 12/26/2006 |
| 7149794 | Tracing layer-2 route in networks based on broadcast medium Tracing the layer-2 devices present between any two systems in a network implemented using broadcast medium A device (receiving device) receives a command including a source and destination system identifiers. If the receiving device is not connected directly to the... | 12/12/2006 |
| 7120118 | Multi-path analysis for managing machine communications in a network Multiple traffic management nodes may be coupled with separate networks and with a connecting network. The traffic management nodes monitor and classify traffic passing through the connecting network. Current paths through the connecting network are identified and u... | 10/10/2006 |
| 7120119 | Management of protocol information in PNNI hierarchical networks Methods and apparatus are provided for managing protocol information in a PNNI hierarchical network. In a PAR-enabled device (1) of the network, topology indicators (HC, LC) are assigned to protocol information encapsulated in PAR PTSEs received by the PAR-en... | 10/10/2006 |
| 7103041 | Optimization of number of transceivers used in a switch A switch. The switch includes a port card. The switch includes a network connected to the port cards. The network having transmitters and receivers that communicate with each other and have assignments between each other. The switch includes a fabric connected to th... | 09/05/2006 |
| 7065079 | VC sharing for multicast in a computer network Only one point to multipoint virtual circuit (p2mp VC) is used within a router to handle all of the sources for a particular multicast group when other particulars of the multicast group are identical within that router. The router receiving a multicast packet for a... | 06/20/2006 |
| 7050447 | Multi-level expedited forwarding per hop behavior A method and system utilizing a multi-level expedited forwarding per hop behavior (MLEF PHB) which manages buffer space to provide priority to calls based on a predefined priority scheme. The MLEF PHB defines a set of configurable parameters that define how much buf... | 05/23/2006 |
| 7035207 | System and method for forming, maintaining and dynamic reconfigurable routing in an ad-hoc network A network comprises a plurality of network nodes. Each network node has a unique node identifier within the context of the network and stores a table of nodes. The table of nodes includes at least one table entry. The table entry includes three fields—a destinatio... | 04/25/2006 |
| 7003311 | Method of selecting base station, and mobile station, base station, and recording medium recording program The invention provides a method of selecting a base station according to which optimal quality can be achieved in the communication between a mobile station and a communication destination by efficiently using resources of the entire wireless network, as well as a m... | 02/21/2006 |
| 6980530 | Spot beam hopping packet scheduler system in satellite communication A spot beam hopping packet scheduler system performs efficient switching over links such as hopped spot beams which compete with each other for physical properties and resources. The spot beam hopping packet scheduler system provides statistical weighting and priori... | 12/27/2005 |
| 6977898 | Method for supporting high priority calls on a congested WAN link A network node is configured to negotiate for connections for high priority calls (e.g., voice calls) received at the node in the face of otherwise congested outbound communication links. The negotiation is conducted in a fashion that will preserve connections for e... | 12/20/2005 |
| 6975594 | System and method for providing controlled broadband access bandwidth A system and method for providing controlled broadband access bandwidth allocation adjustment service are disclosed. A broadband bandwidth allocation service manager is established which is accessible via the broadband network. When a broadband bandwidth allocation ... | 12/13/2005 |
| 6970466 | Packet switching apparatus A packet switching apparatus for simplifying and reducing the size of a packet switching circuit which is to perform at high speed. The packet switching apparatus is provided with a first packet switching unit for sorting a data packet from one of a plurality of inp... | 11/29/2005 |
| 6967952 | Method and apparatus for providing high capacity, long loop broadband ADSL service Method and apparatus for providing a long loop broadband service which allows data from different ADSL users to be shared and transported across a group (possibly a group of one) of line-powered, repeatered copper pairs utilizing a symmetric transmission approach is... | 11/22/2005 |
| 6956819 | Method, apparatus and system for evaluating quality-of-service in packet switching network A method for evaluating quality-of-service in packet switching network uses an evaluation signal with a frequency component that changes continuously with a lapse of time. The evaluation signal is a time stretched pulse, and wherein the method includes a step of tra... | 10/18/2005 |
| 6954433 | IP processor This invention relates to an IP processor, and more particularly, provides an IP processor that reduces network load when a plurality of IP processors connected to ATM switches are used in edge portion of an IP network. The IP processor is comprised of a line interf... | 10/11/2005 |
| 6944131 | State information and routing table updates in large scale data networks In a communication network comprising nodes and links between the nodes, a controller node disseminates link state information. A nodal routing table exists at each node comprising routes between pairs of nodes. The nodal routing table is either populated by the giv... | 09/13/2005 |
| 6944130 | Method and apparatus for determining a layer 2 path in a switched network A method and apparatus that provide for a Layer 2 path determination are disclosed. In one embodiment of the invention, a Layer 3 path between a source device and destination device is first determined in order to identify contiguous pairs of Layer ... | 09/13/2005 |
| 6941327 | Apparatus and method for database synchronization in a duplex system An improved duplex system is disclosed having a primary system with a primary database and a redundant system with redundant database. The improvement includes a Change List Table (CLT) that records key information regarding each transaction performed on the primary... | 09/06/2005 |
| 6914912 | Route selection for alternate paths in connection-oriented networks A process for selecting the best possible route for an alternate communications path in connection-oriented networks takes into account the reserved network resources and the set of links and/or nodes used by a current communications path. Whenever a request for rou... | 07/05/2005 |
| 6810009 | Connection setting method in ATM network In an ATM network in which an SPVC is realized and in which in order to carry out speedily the detection of failures on a line, a software PVC realized by a P-NNI, i.e., a PVC is established between a source private network and a destination private network, and the... | 10/26/2004 |
