| 摘要 |
<p>A node structure information management method in which a hub station integrally manages node structure information on a radio bus composed of the hub station and nodes, and all the nodes and the latest node structure information are shared. When node information on a node in a radio bus (11) is altered, the node creates an alteration notification packet for notifying the hub station of the alteration. Further, (1) the nodes and hub station stores node structure information on the nodes in a node structure information table, and the hub station has a counter for managing the update of the whole node structure information tables and transmits the count for each frame. (2) the hub station, on receiving the notification of alteration of the node structure from a node, updates the node structure information table in the hub station and broadcasts the update information to all the nodes in the radio bus. (3) Each node receives the update information from the hub station, updates the node structure information table of the node, receives the count transmitted for each frame, judges whether or not the node structure information in the hub station is altered, requests resending of difference information on the difference between the node structure information table in the node and the node structure information table in the hub station if necessary, and updates the node structure information table of the node. A radio network system is also disclosed.</p> |
