As described above, the control device 10 according to Example Embodiment 1 can receive, via the service control device 20, information relating to a transmittable data amount determined in the application server 30. Further, the control device 10 can execute, by using the received information relating to the transmittable data amount, traffic control on data transmitted from the communication terminal 50. As a result, in a mobile network, traffic or a data amount transferred on a core network can be controlled, in consideration of a traffic characteristic of an application operating between the application server 30 and the communication terminal 50. By performing such control, the control device 10 according to Example Embodiment 1 can reduce a possibility of occurrence of a problem that a service itself provided by the application fails to operate. The problem that a service itself provided by the application fails to operate is caused by performing traffic control which does not consider a traffic characteristic of an application operating between the application server 30 and the communication terminal 50.

Furthermore, the function of the control device 10 described in FIG. 1 may be installed in the base station 40. In other words, the base station 40 may receive information relating to a transmittable data amount from the service control device 20, and perform traffic control, based on the received information relating to the transmittable data amount.