Abstract: A wireless communication device used in a wireless network includes: a storage configured to store information that identifies an adjacent wireless communication device; an obtaining unit configured to obtain, from a first wireless communication device among the adjacent wireless communication devices, information that identifies a second wireless communication device that is adjacent to the first wireless communication device; a selector configured to select an adjacent wireless communication device in accordance with a destination of data; and a transmitter configured to transmit the data to the adjacent wireless communication device selected by the selector. The selector decreases a priority of the first wireless communication device in selecting the adjacent wireless communication device when the information that identifies the second wireless communication device is not stored in the storage.

Abstract: A first mobile terminal requests a device to transmit data, on the basis of a processing request transmitted from a management server. The device transmits the requested data to the first mobile terminal. The first mobile terminal generates processed data by using the data received from the device. The first mobile terminal assigns an identifier to the processed data. The first mobile terminal transmits the processed data in association with the identifier to the management server. The first mobile terminal transmits an association relationship between the identifier and the data used for generating the processed data to the device. The device stores the identifier in association with the transmitted data. A second mobile terminal transmits to the device an identifier transmitted from the management server as an identifier associated with data to be deleted. The device identifies data associated with the identifier received from the second mobile terminal.

Abstract: A wireless communication device comprising: a storage configured to store identification information identifying a particular adjacent device from among the plurality of wireless communication devices that is adjacent to the wireless communication device and that transmits, to the wireless communication device, data addressed to a final destination device; a generator configured to generate search data that includes information indicating a search of a route to the final destination device; a transmitter configured to broadcast the search data to adjacent devices; and a decision unit configured to determine that a bypass route from the particular adjacent device to the final destination device is not present when data that includes information indicating that the search data does not reach the final destination device is received from all particular adjacent devices for which identification information is stored in the storage.

Abstract: Each node connected to an ad hoc network receives route information from an adjacent node. Each node obtains quality information indicating quality of a route indicated by the route information with respect to the received route information. Each node determines whether a plurality of route information items whose packet destination nodes are the same are received at a predetermined frequency. When it is determined that a plurality of route information items whose packet destination nodes are the same are received, each node compares quality information items of the plurality of received route information items, and selects a route information item corresponding to a quality information item indicating a highest quality as a comparison result. Each node relays the selected route information item to an adjacent node.

Abstract: When receiving a hello packet, a node registers information on a control header of the hello packet in a work table. The information on the control header of the hello packet includes a plurality of sets of an address, a destination, and ?Pav of a node. The node stores information, in which a set of an address, a destination, and ?Pav of the own node from the own node to the destination is added to the information on the control header, in the control header of the hello packet and transmits the hello packet. These processes are performed by each node included in an ad-hoc network.

Abstract: A first mobile terminal requests a device to transmit data, on the basis of a processing request transmitted from a management server. The device transmits the requested data to the first mobile terminal. The first mobile terminal generates processed data by using the data received from the device. The first mobile terminal assigns an identifier to the processed data. The first mobile terminal transmits the processed data in association with the identifier to the management server. The first mobile terminal transmits an association relationship between the identifier and the data used for generating the processed data to the device. The device stores the identifier in association with the transmitted data. A second mobile terminal transmits to the device an identifier transmitted from the management server as an identifier associated with data to be deleted. The device identifies data associated with the identifier received from the second mobile terminal.

Abstract: A first mobile terminal requests a device to transmit data, on the basis of a processing request transmitted from a management server. The device transmits the requested data to the first mobile terminal. The first mobile terminal generates processed data by using the data received from the device. The first mobile terminal assigns an identifier to the processed data. The first mobile terminal transmits the processed data in association with the identifier to the management server. The first mobile terminal transmits an association relationship between the identifier and the data used for generating the processed data to the device. The device stores the identifier in association with the transmitted data. A second mobile terminal transmits to the device an identifier transmitted from the management server as an identifier associated with data to be deleted. The device identifies data associated with the identifier received from the second mobile terminal.

Abstract: In a node device 1 in a communication network, an FID management table 5 stores an FID for unique identification of a frame and the information about a destination node of the frame, and a weighting table 7 stores weighting information about another node as a destination for relay of the frame for each final destination node of the frame. When a frame transmitted to a local node is received, and if the FID of the received frame is stored in the FID management table 5, the data about the destination node associated with the FID is updated. If the FID of the frame received from the frame reception device is not stored in the FID management table 5, the FID management table 5 corresponding to the destination node of the frame is referred to, and another node as a destination for relay of the frame is determined.

Abstract: A first mobile terminal requests a device to transmit data, on the basis of a processing request transmitted from a management server. The device transmits the requested data to the first mobile terminal. The first mobile terminal generates processed data by using the data received from the device. The first mobile terminal assigns an identifier to the processed data. The first mobile terminal transmits the processed data in association with the identifier to the management server. The first mobile terminal transmits an association relationship between the identifier and the data used for generating the processed data to the device. The device stores the identifier in association with the transmitted data. A second mobile terminal transmits to the device an identifier transmitted from the management server as an identifier associated with data to be deleted. The device identifies data associated with the identifier received from the second mobile terminal.

Abstract: A wireless communication device used in a wireless network includes: a storage configured to store information that identifies an adjacent wireless communication device; an obtaining unit configured to obtain, from a first wireless communication device among the adjacent wireless communication devices, information that identifies a second wireless communication device that is adjacent to the first wireless communication device; a selector configured to select an adjacent wireless communication device in accordance with a destination of data; and a transmitter configured to transmit the data to the adjacent wireless communication device selected by the selector. The selector decreases a priority of the first wireless communication device in selecting the adjacent wireless communication device when the information that identifies the second wireless communication device is not stored in the storage.

Abstract: A wireless communication device comprising: a storage configured to store identification information identifying a particular adjacent device from among the plurality of wireless communication devices that is adjacent to the wireless communication device and that transmits, to the wireless communication device, data addressed to a final destination device; a generator configured to generate search data that includes information indicating a search of a route to the final destination device; a transmitter configured to broadcast the search data to adjacent devices; and a decision unit configured to determine that a bypass route from the particular adjacent device to the final destination device is not present when data that includes information indicating that the search data does not reach the final destination device is received from all particular adjacent devices for which identification information is stored in the storage.

Abstract: A node apparatus changes a first access key unique to itself; changes a shared key same for node apparatuses; encrypts, using the shared key, the first access key and transmits it; receives an access key notification frame; decrypts it using the shared key, thereby obtaining a second access key; attaches, to a first plaintext frame, first signature data obtained by encrypting, using the shared key, data including a first value calculated from the first plaintext frame; encrypts the first plaintext frame using the second access key and transmits thus encrypted frame; receives a second encrypted frame; decrypts it by the first access key to obtain a second plaintext frame; obtains a second value by decrypting, using the shared key, a second signature data attached to the second plaintext frame; calculates a third value from the second plaintext frame; and confirms whether the second and third values are consistent.

Abstract: In a node device 1 in a communication network, an FID management table 5 stores an FID for unique identification of a frame and the information about a destination node of the frame, and a weighting table 7 stores weighting information about another node as a destination for relay of the frame for each final destination node of the frame. When a frame transmitted to a local node is received, and if the FID of the received frame is stored in the FID management table 5, the data about the destination node associated with the FID is updated. If the FID of the frame received from the frame reception device is not stored in the FID management table 5, the FID management table 5 corresponding to the destination node of the frame is referred to, and another node as a destination for relay of the frame is determined.

Abstract: A node apparatus changes a first access key unique to itself; changes a shared key same for node apparatuses; encrypts, using the shared key, the first access key and transmits it; receives an access key notification frame; decrypts it using the shared key, thereby obtaining a second access key; attaches, to a first plaintext frame, first signature data obtained by encrypting, using the shared key, data including a first value calculated from the first plaintext frame; encrypts the first plaintext frame using the second access key and transmits thus encrypted frame; receives a second encrypted frame; decrypts it by the first access key to obtain a second plaintext frame; obtains a second value by decrypting, using the shared key, a second signature data attached to the second plaintext frame; calculates a third value from the second plaintext frame; and confirms whether the second and third values are consistent.

Abstract: Each node connected to an ad hoc network receives route information from an adjacent node. Each node obtains quality information indicating quality of a route indicated by the route information with respect to the received route information. Each node determines whether a plurality of route information items whose packet destination nodes are the same are received at a predetermined frequency. When it is determined that a plurality of route information items whose packet destination nodes are the same are received, each node compares quality information items of the plurality of received route information items, and selects a route information item corresponding to a quality information item indicating a highest quality as a comparison result. Each node relays the selected route information item to an adjacent node.