| 摘要 |
The present invention reconstructs a route composition to detour a defect route and reduces the load of a control unit. A relay device which relaying the communication between information communication devices comprises a child device, a detection unit, a communication state obtainment unit, and a route connection unit. The detection unit detects the change of a first communication state between a first relay device and the detection unit. The communication state obtainment unit obtains a second communication state between a second relay device and a third relay device from the second relay device. The route connection unit is effective to a logical route between the child device and the second relay device according to a combination between the first communication state and the second communication state when the detection unit detects the change of the first communication state. [Reference numerals] (1) Relay device;(2) Detection unit;(3) Communication state obtainment unit;(4) Route connection unit;(5) Processing part;(6) Information collection request issuing unit;(AA) one embodiment of the relay device |
