The present invention provides a service that uses a flyable terminal device such as a drone in a three-dimensionally formed network in which, in fifth-generation mobile communication and the like, the propagation delay of wireless communication with terminal devices including a device for IoT is low, simultaneous connection with a wide range of multiple terminal devices and high-speed communication are possible, and the system capacity per unit area is large. A service provision system for providing a service that uses one or more terminal devices is provided with: a wireless relay device having a wireless relay station for relaying wireless communication with the terminal device; and a server device for communicating with the terminal device via the wireless relay station of the wireless relay device. The wireless relay station is provided in a floating body that is controlled so as to be located in a floating airspace at an altitude of 100 [km] or less by autonomous control or control from outside such that a three-dimensional cell is formed in a predetermined cell formation target airspace between the wireless delay station and the ground or the sea surface. The terminal device is controlled so as to be located in the three-dimensional cell by autonomous control or control from outside.
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