Patent application number | Description | Published |
20080298304 | ROUTING METHOD IN WIRELESS MULTI-HOP NETWORK AND COMMUNICATION TERMINAL - A wireless multi-hop network communication terminal | 12-04-2008 |
20090073910 | RADIO MULTI-HOP NETWORK, NODE, MULTICAST ROUTE CONTROL METHOD, AND PROGRAM THEREOF | 03-19-2009 |
20100002712 | PATH CONTROL METHOD ADAPTED TO AUTONOMOUS SYSTEM ROUTING PROTOCOL FOR COMMUNICATION NETWORK - A path control method includes a procedure for developing a path control message including regional information in transmission on the network. The regional information designates a path and/or a path length for transmitting the path control message. The path control message includes a regional property for instructing each node as to how to process the regional information either in a strict manner or in a flexible manner. With reference to the regional information and/or the regional property, each node is capable of selecting a destination node to which the path control message is to be transmitted, stopping the further transmission of the path control message, or discarding the path control message. | 01-07-2010 |
20100172240 | TRAFFIC ENGINEERING APPARATUS, NETWORK SYSTEM, AND TRAFFIC CONTROL METHOD AND PROGRAM - The present invention provides a traffic engineering apparatus which performs traffic engineering, including: an optimal branch point determination unit which determines an optimal branch point in a network to realize a predetermined policy; and a traffic flow regulation unit which regulates a traffic flow rate into the local node during reception of traffic based on the optimal branch point determined by the optimal branch point determination unit. | 07-08-2010 |
20100306574 | COMMUNICATION METHOD, COMMUNICATION SYSTEM, NODE, AND PROGRAM - The processing load of a path control message on a node due to a link fault is reduced, a normal routing operation is assured, and the stable continuity of a network is realized. The node having received the path control message transmits the path control message to the adjacent node having transmitted the path control message and at least one or more adjacent nodes on an alternate path. | 12-02-2010 |
20110173486 | COMMUNICATION APPARATUS, NETWORK, AND ROUTE CONTROL METHOD USED THEREFOR - Provided is a communication apparatus that is capable of enhancing fault resistance of a network. A communication apparatus includes, in a network where messages are exchanged among a plurality of communication apparatuses and route control is performed, a route summary processing means that creates route summary information obtained by summarizing route information of a local apparatus from a route table holding route information used for route control and traffic information between communication apparatuses, the route summary processing means further exchanging the route summary information that is created with other communication apparatuses; and a fault influence degree information processing means that calculates fault influence degree information indicating a degree of influences on traffic and the other communication apparatuses when the local apparatus is in a fault state, the fault influence degree information processing means further exchanging the fault influence degree information that is calculated with the other communication apparatuses; and a route adjustment processing means that adjusts the route table of the local apparatus using the route summary information and the fault influence degree information that are obtained by the local apparatus. | 07-14-2011 |
20130182621 | INFORMATION COLLECTION SYSTEM, TERMINAL AND SINK NODE USING WIRELESS MULTIHOP NETWORK, AND COMMUNICATION METHOD FOR THE SAME - In a wireless multihop network, collision between a routing control message and an information collection message is avoided, and information collection is completed within a predetermined time. A terminal includes: a transmission period control unit that calculates transmittable periods of a routing control message and an information collection message per hop, based on a hop count from the sink node and the number of terminals per hop, calculate a collision period during which the routing control message collides with the information collection message, based on both of the calculated transmittable periods, and recalculates the transmittable period of the routing control message so as to transmit the routing control message while avoiding the calculated collision period; a routing control unit that creates and transmits the routing control message within the transmittable period of the routing control message according to a hop count of the terminal; and an information transmission unit that creates and transmits the information collection message within the transmittable period of the information collection message according to a hop count of the terminal. | 07-18-2013 |
20130275619 | ROUTER, METHOD FOR USING CACHE WHEN CONTENT SERVER IS UNREACHABLE, AND PROGRAM - Provided is a router to acquire a content, even when accessibility to a server is impossible due to a network failure. The router comprises: a unit for storing content data included in a content reply message transmitted from a content server; a unit for, when the content server becomes unreachable, broadcasting, to other routers, an MBC setting request message configured to set guidance information in the other routers, the guidance information being used, when a content request message which requests the content server for the content data is transmitted from a content request node, to transfer the content request message to the own router; and a unit for replying a content reply message including the stored content data, when the content request message used to request the content server for the content data is transferred in accordance with the guidance information. | 10-17-2013 |