| 摘要 |
PROBLEM TO BE SOLVED: To provide a system and a control method capable of automatically relaying and restoring a mobile slave station as needed. SOLUTION: When a master station composed of a fixed station or a mobile station performs bidirectional long distance radio data communication in a time division manner with plural slave stations positioned in the almost same area in a long distance by using a directional antenna, in the case that communication can not be directly performed with a certain slave station due to the presence of a shielding object or distance extension, etc., corresponding to the relative position relation of the master station and the respective slave stations, the optimum other slave station among the slave stations communicable with the master station relays the communication between the master station and the slave station which becomes incommunicable and thus, the communication is made possible between the master station and the slave station which becomes incommunicable. |
