Fujitsu Corporation

Mitsuharu Amano

Ryuichi Takechi

Hideaki Ono

Tsuguo Kato

Yutaka Ezaki

Takayuki Okamasu

Yayoi Nomura

Yasuhiro Kurogi

Kenji Yamada

Kenji Maeda

Makoto Kawatoko

Syouichi Urata

Kenji c/o Fujitsu Limited Yamada

A node apparatus that establishes a wireless communication network through wireless communication with other node apparatuses adjacent to the node apparatus includes a memory configured to store node alive-or-dead information, which represents whether or not a node apparatus is in an abnormal state, a controller configured to perform processes including receiving a data frame, performing determination regarding an alive-or-dead state for a transmission destination node apparatus obtained from the data frame on the basis of the node alive-or-dead information stored in the memory, and determining a destination of the data frame from a transmission destination node apparatus obtained from the data frame and a transmission source node apparatus obtained from the data frame on the basis of a result of the determination, and a transmission unit configured to transmit the data frame in which the determined destination is set.

Node apparatus, recording medium that has stored control program therein, and method of operating node apparatus

Each of the nodes included in an ad-hoc network determines whether an identifier indicative of high-priority data is included in data received from another node. When the identifier is included in the received data, each of the nodes determines whether the subject node is a device that relays the received data to a destination. When determining that the subject node is a device that relays the received data to the destination, each of the nodes transmits the received data to the destination. When determining that the subject node is not a device that relays the received data to the destination, each of the nodes suppresses data transmission to the nodes included in the ad-hoc network.

Transmission control method and node

In a system including a plurality of node devices that form an ad hoc network (), a node device (N) receives, from another node device (N; N), first frame data including identification information of a source node device and a destination node device. If node related information of only the node device can be additionally stored in the received first frame data, the node device generates second frame data including the identification information of the source node device (N; N) or the destination node device (N; N) as destination identification information, node related information within the first frame data, and the node related information of the node device, also generates third frame data that does not include the node related information within the first frame data, and transfers the generated second and third frame data to another node device (N, N; N).

Node related information collecting system, node device and frame processing method

A storage unit includes an alarm state/timer table, an alarm state table, an alarm state OR-representation table, an alarm state change OR-representation table, an alarm state latch circuit, and a statistical information memory. A collection unit extracts the identifier and data from a cell that passes through a switching unit. An update unit updates associated data in the storage unit. A readout unit reads the updated data and sends it to a call processing processor. An address generation section selectively generates the address for data needing to be updated. An adjustment section forces the readout unit to wait until a cell slot arrives in which no data is updated.

Information collection device and method for use with communications

Growing community of inventors

Fukuoka, Japan

Mitsuharu Amano