Control method for vehicle, information processing device, and vehicle control system

A vehicle control server comprising:

• a processor for executing programs stored in memory;
• a communication unit configured to perform wire or wireless data communication with the at least one vehicle control server;
• and
• circuitry configured to
• determine a communication data amount such that a fuel consumption reduction effect with respect to a communication cost is large, the fuel consumption reduction effect being a fuel consumption reduction effect in the vehicle configured to receive a fuel reduction command to reduce fuel consumption of the vehicle, the communication cost being a communication cost of a communication with the vehicle through the communication unit;
• collect vehicle information from a vehicle collecting vehicle information from the vehicle indicating a state of the vehicle, wherein the amount of collected vehicle information is based on the communication data amount, the communication data amount being acquired through the communication unit;
• calculate an accuracy of control of the vehicle, based on the communication data amount using a previously determined relationship between the communication data amount and accuracy of vehicle control, wherein the accuracy of vehicle control increases with an increase in the communication data amount;
• derive the fuel consumption for a route, based on a vehicle speed and a fuel consumption amount of other vehicles on the route, the route being a route where the vehicle plans to travel;
• generate the fuel reduction command based on the derived fuel consumption, and based on the calculated accuracy, the fuel reduction command being a command to reduce fuel consumption of the vehicle on the route;
• send the fuel reduction command to the vehicle through the communication unit;
• and
• control the vehicle based on the fuel reduction command.

A vehicle control system comprising:

• a vehicle;
• and
• a vehicle control server including a processor for executing programs stored in memory, the vehicle control server configured to communicate with the vehicle, the vehicle control server including a communication unit configured to perform wire or wireless data communication with the at least one vehicle control server and circuitry, the circuitry being configured to
• determine a communication data amount such that a fuel consumption reduction effect with respect to a communication cost is large, the fuel consumption reduction effect being a fuel consumption reduction effect in the vehicle configured to receive a fuel reduction command to reduce fuel consumption of the vehicle, the communication cost being a communication cost of a communication with the vehicle through the communication unit;
• collect vehicle information from the vehicle collecting vehicle information from the vehicle indicating a state of the vehicle, wherein the amount of collected vehicle information is based on the communication data amount, the communication data amount being acquired through the communication unit
• calculate an accuracy of control of the vehicle, based on the communication data amount using a previously determined relationship between the communication data amount and accuracy of vehicle control, wherein the accuracy of vehicle control increases with an increase in the communication data amount;
• derive the fuel consumption for a route, based on a vehicle speed and a fuel consumption amount of other vehicles on the route, the route being a route where the vehicle plans to travel;
• generate the fuel reduction command based on the derived fuel consumption, and based on the calculated accuracy, the fuel reduction command being a command to reduce the fuel consumption of the vehicle on the route;
• send the fuel reduction command to the vehicle through the communication unit;
• and
• control the vehicle based on the fuel reduction command.