Information-collecting device, information-collection method, and program-recording medium

An information-collecting method comprising:

• receiving state information including a position and a speed from a plurality of moving bodies that transmit the state information at a notified time interval, and calculating a distance and a relative speed between two moving bodies;
• calculating an interval that is shortened depending on the relative speed with respect to the distance;
• and for each respective moving body of the plurality of moving bodies:
• acquiring an available communication band of a base station being used by the respective moving body;
• calculating a lower interval limit by dividing a product of a size of the state information and a number of moving bodies that are using the base station being used by the respective moving body by the available communication band of the base station being used by the respective moving body, and when the calculated interval is lower than the lower interval limit, sending the lower interval limit to the respective moving body in place of the calculated interval.

A non-transitory recording medium recording thereon a program that causes a computer to:

• receive state information including a position and a speed from a plurality of moving bodies that transmit the state information at a notified time interval, and calculate a distance and a relative speed between two moving bodies;
• calculate an interval that is shortened depending on the relative speed with respect to the distance;
• and for each respective moving body of the plurality of moving bodies:
• acquire an available communication band of a base station being used by the respective moving body, calculate a lower interval limit by dividing a product of a size of the state information and a number of moving bodies that are using the base station being used by the respective moving body by the available communication band of the base station being used by the respective moving body, and when the calculated interval is lower than the lower interval limit, send the lower interval limit to the respective moving body in place of the calculated interval.