| 摘要 |
<p>In a radio ad hoc communication system, when no alternative route can be found in a node, restoration at an intermediate node is tried without deleting all the routes reaching the transmission source. For this, if a corresponding route is not set upon a data communication request (10), route finding process (20) finds and sets a route. A link state management process (40) monitors the state of a link (30) on the route set by the route finding process (20) and updates the link state in the route table of each radio terminal. A route information notification process (50) notifies the link state when the link quality is deteriorated, thereby prompting the maintenance of the transmission data. An alternative route search process (60) searches an alternative route when the link quality is deteriorated. If it cannot find any, it continues search by going back to the terminal of the transmission side. A route switching process (70) switches the alternative route candidate as a normal route.</p> |
