Abstract: A first collecting device is connected to a first network to which a first sensor is connected, and to an external network. A second collecting device is connected to a second network to which a plurality of second sensors for measuring a second amount of observation are connected, and to the external network, and collects second sensor data. When the first collecting device cannot collect first sensor data through the first network, an adapter transfers the first sensor data to the second collecting device through the second network, and transmits the first sensor data to the first collecting device from the second collecting device through the external network.

Abstract: Disclosed is a method of accepting a QoS request for utilizing resources of a network in a predetermined quality. The method receives from a terminal connected to the network a resource unnecessity notification indicating that resource allocated to the terminal has become unnecessary, and holds, as a free resource information, information on a free resource which is a resource notified by the resource unnecessity notification as unnecessary resource. Then, the method receives the QoS request from the terminal, and determines whether the free resource meets the received QoS request or not on the basis of the free resource information. The method allocates the free resource to the terminal when the free resource meets the received QoS request, and transmits information on the allocated free resource to the terminal.

Abstract: Disclosed is a method of accepting a QoS request for utilizing resources of a network in a predetermined quality. The method receives from a terminal connected to the network a resource unnecessity notification indicating that resource allocated to the terminal has become unnecessary, and holds, as a free resource information, information on a free resource which is a resource notified by the resource unnecessity notification as unnecessary resource. Then, the method receives the QoS request from the terminal, and determines whether the free resource meets the received QoS request or not on the basis of the free resource information. The method allocates the free resource to the terminal when the free resource meets the received QoS request, and transmits information on the allocated free resource to the terminal.

Abstract: Communication terminals are provided with a short range wireless communication interface. Some communication terminals are also provided with a long range wireless communication interface. A communication terminal having both interfaces is determined to become a segment manager by a plurality of communication terminals. A segment manager and its neighboring communication terminals constitute a segment and communicate with each other via the short range wireless communication interface. A segment manager distributes segment information and collects terminal information from communication terminals that belong to its own segment. The segment managers communicate with each other via the long range wireless communication interface. The segment managers exchange the terminal information related to each segment. Communication within a segment is performed through that segment alone via the short range wireless communication interface.

Abstract: A policy control device for reflecting a policy rule defined by a condition and an action corresponding to the condition for operation setting of respective network devices present in a network to be managed, according to a transition of operation states of the network, including a storage unit for storing a plurality of multi-policy rules generated in units of combination of at least two single policy rules having different actions on the same condition, together with particular information of a network device to be applied, in such a manner that the plurality of multi-policy rules and the particular information can be updated; and a control unit for applying one of the plurality of multi-policy rules stored in the storage unit for the operation setting of the network device identified, based on the particular information.

Abstract: A peer node according to the present invention relates to a peer node for constructing a peer-to-peer (P2P) network allowing P2P type communication. The peer node includes a unit dividing a share target file for information sharing through the P2P network into a plurality of divided files in a form where contents of each divided file makes no sense by itself; a unit distributing and arranging the plurality of divided files to and in a plurality of peer nodes including the own peer node and at least one other peer node constituting the P2P network; and a unit moving each of the divided files of distribution and arrangement between the plurality of peer nodes at a certain period of time.

Abstract: A policy rule scenario control apparatus comprises a scenario data storing unit storing one or more scenario data produced by combinations of a plurality of types of policy rules and applying conditions of these policy rules, a monitoring unit monitoring an operating state of a network device, a scenario selecting unit selecting the scenario data having the applying condition suitable to the monitor result, and a scenario implementing unit implementing policy control on the network device on the basis of, in the selected scenario data, the policy rule having the applying condition suitable to the monitor result, and implementing the policy control on the network device on the basis of a result of the implementation and another policy rule having the applying condition suitable to a subsequent monitor result. This enables automatically applying the policy rule validly according to the network state varying at all times.