Control device, program, system, and control method

A program which causes a computer to function as:

• a feeder link determination unit which determines a state of a feeder link established between one flight vehicle, which functions as a stratospheric platform, forms a wireless communication area by emitting a beam, and provides a wireless communication service to a user terminal in the wireless communication area, and one gateway;
• and
• a flight vehicle control unit which controls the one flight vehicle such that, when the feeder link determination unit determines that the state of the feeder link satisfies a predetermined switching condition, the one flight vehicle switches a data communication via the one gateway to a data communication via a communication device in the wireless communication area in which the one flight vehicle has established a service link.

A control method which is executed by a computer, comprising:

• determining a state of a feeder link established between one flight vehicle, which functions as a stratospheric platform, forms a wireless communication area by emitting a beam, and provides a wireless communication service to a user terminal in the wireless communication area, and one gateway;
• and
• controlling the one flight vehicle such that, when it is determined in the determining the state of the feeder link that the state of the feeder link satisfies a predetermined switching condition, the one flight vehicle switches a data communication via the one gateway to a data communication via a communication device in the wireless communication area in which the one flight vehicle has established a service link.