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| Number | Title | Issue Date |
| 8068411 | Method and apparatus to compute local repair paths taking into account link resources and attributes A technique for calculating local repair paths through a computer network using one or more dynamically measured parameters in place of, or in addition to, statically assigned cost metrics. The dynamically measured parameters include various statistical measures of ... | 11/29/2011 |
| 8059528 | Method of estimating restoration capacity in a network A method for estimating restoration capacity for a communication network includes a specified number of restoration paths, which can be maximally diverse from each other. ... | 11/15/2011 |
| 8040797 | Sliced tunnels in a computer network In one embodiment, a sliced tunnel is signaled between a head-end node and a tail-end node. One or more fork nodes along the sliced tunnel are configured to furcate the sliced tunnel into a plurality of child tunnels of the sliced tunnel. Also, one or more merge nod... | 10/18/2011 |
| 8018844 | Reliable message transfer over an unreliable network In a communications network having a plurality of nodes adapted to communicate with each other, and more than one path available between most source-destination node-pairs, a network interface is associated with each node. Each network interface has a plurality of r... | 09/13/2011 |
| 7961602 | Method and device using a backup communication path to transmit excess traffic An extra traffic is transmitted in a redundant communication network using a backup path. A working communication path and the backup communication path connect two switching nodes. A switching control packet including information representing whether a first traffi... | 06/14/2011 |
| 7929429 | Optimal route selection in a content delivery network A routing mechanism, service or system operable in a distributed networking environment. One preferred environment is a content delivery network (CDN) wherein the present invention provides improved connectivity back to an origin server, especially for HTTP traffic.... | 04/19/2011 |
| 7796504 | Method for establishing an MPLS data network protection pathway Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly h... | 09/14/2010 |
| 7715311 | Point-to-multipoint data transmission The initial transmission of data packets in a point-to-multipoint communication network may often be delayed when retransmissions of erroneously decoded data packets are required. According to an aspect of the present invention, point-to-multipoint data transmission... | 05/11/2010 |
| 7668084 | Systems and methods for fault-tolerant high integrity data propagation using a half-duplex braided ring network In one embodiment, a network comprises a plurality of nodes that are communicatively coupled to one another using bidirectional, half-duplex links. The network has a logical first channel over which data is propagated along the network in a first direction and a log... | 02/23/2010 |
| 7609621 | Automatic protection network switching A method of protecting a protected link is disclosed. The method includes connecting traffic from a service module to a first physical module having a link layer framer that is connected to a protected egress link. The traffic is connected through the first physical... | 10/27/2009 |
| 7593324 | Graceful port shutdown protocol for fibre channel interfaces A port shutdown protocol coordinates among various components involved in the process of administratively bringing down a link at both ends of a link connecting two switches. Execution of the protocol avoids or reduces frame drops and/or reordering. In this protocol... | 09/22/2009 |
| 7535830 | Dynamic cable assignment on gigabit infrastructure A method and corresponding network interface device for communicating between devices connected to a LAN includes attempting to communicate between the network devices over an initial subset of the network media wires. If the communication fails, a subsequent subset... | 05/19/2009 |
| 7515532 | Method, system, and storage medium for preventing duplication and loss of exchanges, sequences, and frames A sequence identification number is added to a header in each Generic Framing Procedure (GFP) frame. The byte sequence identification number identifies frames, preventing duplication or loss of exchanges, sequences, and frames. When this feature is enabled, a remote... | 04/07/2009 |
| 7512064 | Avoiding micro-loop upon failure of fast reroute protected links A technique incorporates an efficient means for avoiding micro-loops on a backup path associated with a failed protected link. An intermediate node delays updating a forwarding database (FDB) contained in the intermediate node based on the intermediate node's distan... | 03/31/2009 |
| 7502314 | Label-switched path network with alternate routing control In a label-switched path communications network, each node of the network defines first and second label-switched paths between its first and second output ports and the input ports of downstream nodes. The output ports of each node are monitored. If the first outpu... | 03/10/2009 |
| 7489627 | Telecommunication network and upgrading method therefore For upgrading a section of a telecommunication network comprising two nodes, one of the data lines interconnecting the nodes is selected to be a carrier of redundant specimens of information units to be transmitted. An external condition is fulfilled, which is detec... | 02/10/2009 |
| 7443843 | Terminal relay device and relay method An apparatus has a cross connection circuit, first switching sections located on the input side of the cross connection circuit to switch a presently-used transmission path and a reserve transmission path, and second switching sections located on the output side of ... | 10/28/2008 |
| 7428214 | Methods and devices for high network availability Methods and devices are provided for simulating a direct failure between a network device and an end device. In some implementations, the network device is a gateway of a first network and the end device is a host or a storage device on the first network. In some im... | 09/23/2008 |
| 7406038 | System and method for expansion of computer network switching system without disruption thereof A switch fabric system comprises a first chassis for receiving a plurality of line cards each having a plurality of ports and at least two switch fabric cards wherein each line card comprises a plurality of link ports for linking the line card with the switch fabric... | 07/29/2008 |
| 7403474 | Redundant router set up Methods, systems, and devices are provided for redundant router set up. One embodiment of a network device having router functionality includes a processor, memory in communication with the processor, and program instructions. The program instructions can be stored ... | 07/22/2008 |
| 7397761 | Routing restorable service-level-guaranteed connections using maximum 2-route flows A packet network employs restorable routing with service level guarantees. Restorable routing generates two disjoint paths through a network of nodes interconnected by links for a connection request demand between and ingress-egress node pair. Restorable routing emp... | 07/08/2008 |
| 7394761 | System and method for delivering messages using alternate modes of communication There is provided a novel system and method for delivering messages using alternate modes of communication when a primary mode of communication is not available as may happen in emergent circumstances such as those that arise during a terrorist attack causing damage... | 07/01/2008 |
| 7382723 | Hitless switching system and transmission apparatus A hitless switching system includes a sending apparatus and a receiving apparatus. The sending apparatus includes: a distributing part for dividing an original signal into a plurality of signals; and a transmitting part for transmitting the divided signals over one ... | 06/03/2008 |
| 7373401 | Label switched path OAM wrapper Methods and devices for logically segmenting an LSP so that OAM DTUs may be used to determine the performance and/or the status of LSP segments. To segment a previously determined LSP, a dedicated subpath (a logical LSP) within that predetermined LSP is defined betw... | 05/13/2008 |
| 7372870 | Ethernet transmission apparatus with a quick protective and fair attribute and its method An Ethernet transmission apparatus having a quick protection and fair attribute as well as a corresponding method are disclosed. The apparatus comprises a sorter, MPLS processing module and a SDH processing module, wherein, the MPLS processing module includes a VC t... | 05/13/2008 |
| 7372803 | Apparatus and method for establishment and protection of connections within mesh networks A node within a mesh network includes an Optical Connection Controller (OCC) and a network element. When a connection path within the mesh network is required, an OCC determines if a particular connection path requires a network element to operate as a virtual gatew... | 05/13/2008 |
| 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 |
| 7369810 | Satellite transponder architecture with integral redundancy and beam selection capabilities A transponder system that integrates redundancy and beam selection capabilities is disclosed. The transponder system comprises an amplifier network having a plurality of amplifiers; an antenna network, comprising a plurality of antennae; an output switching network,... | 05/06/2008 |
| 7369977 | System and method for modeling timeouts in discrete event execution A system and method models regional timeout functionality in a discrete event execution environment. A timeout function is initiated associated with an entity upon occurrence of a start condition and terminated or reset upon reaching an end condition. The timeout fu... | 05/06/2008 |
| 7366108 | Network topologies The present invention provides a method for optimization of the configuration of a hierarchical network having a first hierarchy level (LEVEL(j−1)), a second hierarchy level (LEVEL(j)) next below the first level, and a third hierarchy level (LEVEL(j+1)) next below... | 04/29/2008 |
| 7362712 | SONET network outage impact measurement In accordance with the teachings of the present invention, a method and apparatus is presented for determining minutes of outage. Information associated with a facility hierarchy is acquired. In one embodiment, the facility hierarchy is a SONET facility hierarchy. O... | 04/22/2008 |
| 7355967 | Transmission device There is disclosed a transmission device performing NUT setting and its establishment efficiently and precisely. A setting information relay unit relays setting information that places a specific channel out of a channel used for restoration. A channel establishment... | 04/08/2008 |
| 7352966 | Method and apparatus for capacity-efficient restoration in an optical communication system A method and system provide capacity-efficient restoration within an optical fiber communication system. The system includes a plurality of nodes each interconnected by optical fibers. Each optical fiber connection between nodes includes at least three channel group... | 04/01/2008 |
| 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 |
| 7349380 | System and method for providing an addressing and proxy scheme for facilitating mobility of wireless nodes between wired access points on a core network of a communications network A communications network which is capable of effectively and efficiently handling mobility of wireless user terminals between access point nodes of a packet-switched network with minimal overhead and packet loss, and a method for using the same. The communications n... | 03/25/2008 |
| 7349983 | Receiver driven distribution of data using address data of a peer node The invention relates to a device for either generating or maintaining an organic data network having an dynamic topology, comprising a data processing unit at least one data connection to a data network to which s... | 03/25/2008 |
| 7349682 | Home gateway system for automation and security The home gateway system (60) for home automation and security has a wireless local loop transceiver (62). A home automation controller (64) is capable of sending and receiving a message with the wireless local loop transceiver (62). A hom... | 03/25/2008 |
| 7345992 | System and method for embedding a sub-channel in a block coded data stream The present invention relates in general to a method, apparatus, and article of manufacture for providing high-speed digital communications through a communications channel. In one aspect, the present invention employs a variable rate back channel, incorporated with... | 03/18/2008 |
| 7342890 | Data duplication for transmission over computer networks Techniques are described that increase the reliability and quality of data transmissions of computer networks. The techniques provide for the generation of at least two duplicate data flows for carrying data in a computer network. The duplicate data flows are transm... | 03/11/2008 |
| 7343170 | System and method for allowing nodes in a wireless communication network to access multiple channels A method for allowing a node in a wireless communication network to access time slot assignment information on multiple channels includes assigning the node to a first channel associated with a channelized neighborhood having a plurality of nodes. The node communica... | 03/11/2008 |
