Patent application number | Description | Published |
20080240710 | OPTICAL COMMUNICATION SYSTEM, OPTICAL COMMUNICATION APPARATUS, AND METHOD OF MONITORING FAULT ALARM IN PATH SECTION DETOUR - The optical communication system of the present invention is constructed with a data plane and a control plane, and includes a first monitor for monitoring a path alarm on the data plane, a second monitor for monitoring a path alarm on the control plane, and an alarm comparator for comparing alarm statuses of the optical paths that the first monitor and the second monitor preserve, wherein an optical communication apparatus, of which the first monitor and the second monitor both are in a status of having detected the alarm, operate so as to start an operation of avoiding a fault. Such a configuration makes it possible to make a detour only around an appropriate section including a fault location without performing an erroneous operation when a fault has occurred in an optical path, in which a plurality of detour sections, in an all-optical communication system. | 10-02-2008 |
20090116392 | Communication network, path setting method, network management system and node - A hierarchized path setting system in a communication network efficiently contains lower order paths in higher order path. The communication network has a plurality of nodes capable to perform switching process and demultiplexing process not only for lower order paths in a predetermined hierarchical level among hierarchized paths but also for higher order paths in a hierarchical level higher than the predetermined hierarchical level, and a plurality of links connecting these nodes. The system is responsive to a new path setting demand for setting the lower order path, for setting the lower order path in the higher order path when a single higher order path is set from a predetermined transmitter node group, in which a transmitter node of the lower order path belongs, to a predetermined receiver node group including a receiver node. | 05-07-2009 |
20100208722 | NETWORK SYSTEM, PATH CALCULATION METHOD, AND PATH CALCULATION PROGRAM - A route decision system is arranged in each domain of a multi-domain network. The route decision system comprises a topology information collecting unit which collects topology information, a route calculation request responding unit which receives a route calculation request requesting route calculation of a redundant path from a start node to an end node, and a route calculating unit which performs route calculation in response to the route calculation request using the topology information in consideration of a restriction. After a domain from a starting point domain where the start node is present to an end point domain where the end node is present is set, route calculation of the redundant path is sequentially performed at each domain from the end point domain toward the starting point domain through an intermediate domain. | 08-19-2010 |
20100290778 | COMMUNICATION APPARATUS, APPARATUS ACTIVATION CONTROL METHOD, COMMUNICATION CONTROL METHOD, AND COMMUNICATION CONTROL PROGRAM - [PROBLEMS] To certainly restore path information to its original status when a trouble occurs on a network. [MEANS FOR SOLVING PROBLEMS] After reactivation, an apparatus control part ( | 11-18-2010 |
20110044163 | COMMUNICATION NETWORK SYSTEM, COMMUNICATION DEVICE, ROUTE DESIGN DEVICE, AND FAILURE RECOVERY METHOD - A communication network system including a plurality of communication devices each including a switching unit which switches traffic routes, and transmission links which connects the plurality of communication devices, wherein a start-point communication device of the plurality of communication devices including: a storage unit which previously stores information of a plurality of detour paths corresponding to but having routes different from a working path that is transferring traffic between the start-point communication device and an endpoint communication device; and a setting unit which receives a failure notification when a failure occurs in the working path, selects a detour path that is switchable and has the highest priority from among the plurality of detour paths stored in the detour path information storage unit, and then sets relevant communication devices among the plurality of communication devices along the route of the detour path to recover from the failure. | 02-24-2011 |
20110116790 | WAVELENGTH PATH COMMUNICATION NODE APPARATUS, WAVELENGTH PATH COMMUNICATION CONTROL METHOD, PROGRAM, AND RECORDING MEDIUM - A wavelength path communication node apparatus includes a wavelength path demultiplexer ( | 05-19-2011 |
20110317681 | NETWORK COMMUNICATION SYSTEM, COMMUNICATION DEVICE, NETWORK LINKAGE METHOD AND PROGRAM THEREOF - A communication network system including a connectionless type communication network and a connection type communication network, wherein a communication device forming the communication network comprises a unit which transfers in-band control information to be exchanged on an in-band of the connectionless type communication network to other communication device through a virtual control link generated on an IP control network for controlling the connection type communication network and exchanges the in-band control information with other communication device, a unit which determines whether to generate a new connection for the connection type communication network based on the in-band control information to be exchanged, and a unit which generates a new connection for the connection type communication network in response to an instruction from the determination unit. | 12-29-2011 |
20130138793 | NETWORK INFORMATION PROCESSING SYSTEM, A NETWORK INFORMATION PROCESSING APPARATUS AND A DATA PROCESSING METHOD - Provided is a network information processing system, wherein the construction of an information processing system of the whole network is simplified, and network control intended by a user is able to be implemented, and which is provided with: a first network information processing apparatus for managing and controlling a first communication network; and a second network information processing apparatus for managing and controlling a second communication network that contains at least a portion of the first communication network therein. The first network information processing apparatus comprises: a converting means for converting the network connection construction of the construction section of the second communication network, which is related to the first communication network, into the form of a user provided network that is specialized to meet the second communication network under a prescribed conversion rule; and a transmitting means for transmitting the user provided network to the second network information processing apparatus. The second network information processing apparatus comprises a managing means for managing the second communication network on the basis of the user provided network. | 05-30-2013 |
20130339530 | SHARED BANDWIDTH CONTROL METHOD AND DEVICE IN BANDWIDTH SHARING NETWORK AMONG USER GROUPS, AND SHARED BANDWIDTH CONTROL SYSTEM - A shared bandwidth control method, device, and system are provided that can accommodate burst traffic between multiple locations and enhance usage efficiency of a communication link without performing complicated control. In a bandwidth sharing network | 12-19-2013 |
20140112655 | CONTROLLER, A COMMUNICATION SYSTEM, A COMMUNICATION METHOD, AND A STORAGE MEDIUM FOR STORING A COMMUNICATION PROGRAM - [Technical Problem] | 04-24-2014 |
20140219285 | NETWORK SYSTEM - A network system includes a signaling network configured to perform signaling information exchange with client nodes, determine a data information transfer route, and generate setting information, and a data network configured to construct the data information transfer route according to the setting information from the signaling network and perform data exchange between the client nodes. | 08-07-2014 |
20140297038 | NETWORK, CONTROL SYSTEM FOR CONTROLLING THE NETWORK, NETWORK APPARATUS FOR THE NETWORK, AND METHOD OF CONTROLLING THE NETWORK - A control system for controlling a network including a plurality of network apparatuses, includes a network site controller for controlling a cooling system in the network and extracting network resource and ambient information from the plurality of network apparatuses into topological information, and a network controller for controlling the plurality of network apparatuses based on the topological information. | 10-02-2014 |