| 摘要 |
PROBLEM TO BE SOLVED: To enable a host system to simply and easily grasp an occurrence state of radio wave interference.SOLUTION: A radio network system comprises: mobile stations mounted on a plurality of moving vehicles; an instruction unit which performs call communication with the respective mobile stations; and a plurality of base stations which have predetermined communication areas for relaying communication between the respective mobile stations and the instruction unit. When the base station receives communication from the mobile station, the base station outputs an incoming call notification for notifying the instruction unit of reception of communication for the instruction unit. Then, for each incoming call time indicating the time when the instruction unit receives the incoming call notification, the instruction unit creates incoming call information including a selected base station indicating a base station selected for communicating with a specific mobile station and incoming call state information indicating that the base station has received communication from the specific mobile station, and creates interference information indicating a state of radio wave interference on the basis of the incoming call information to output the interference information. |
