Information-collecting device, information-collection method, and program-recording medium
First Claim
1. An information-collecting device comprising:
- memory storing program instructions; and
at least one processor to execute the instructions 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.
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Accused Products
Abstract
Information regarding moving bodies (00) that are in danger of colliding is collected at an appropriate frequency in accordance with the degree of danger. This information-collecting device has a risk calculation unit and a transmission-interval determination unit. The risk calculation unit receives, from a plurality of moving bodies, state information that includes locations and velocities and is transmitted at provided time intervals. The risk calculation unit also computes the distance between and relative velocities of two moving bodies. The transmission-interval determination unit computes an interval such that the higher the relative velocities of two moving bodies are relative to the distance therebetween, the shorter the interval is, and provides the computed interval to the moving bodies.
23 Citations
8 Claims
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1. An information-collecting device comprising:
- memory storing program instructions; and
at least one processor to execute the instructions 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. - View Dependent Claims (2, 3, 4)
- memory storing program instructions; and
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5. 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. - View Dependent Claims (6, 7)
- 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;
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8. 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.
- 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;
Specification