Mobile communications system, control apparatus, policy supply system, state transition control method, and policy supply method

A radio base station that is arranged in a radio access network, the radio base station configured to:

• receive, from a supply unit arranged in a core network, a parameter which indicates an idle transition interval of a control target terminal that is subjected to control of a state transition between a CONNECTED state and an IDLE state;
• and
• perform the control of the state transition of the control target terminal based on the parameter, wherein
• the control target terminal is determined, from among at least one mobile terminal whose communication is monitored by the supply unit, based on the communication of the at least one mobile terminal.

A supply unit arranged in a core network, the supply unit configured to:

• monitor communication of at least one mobile terminal;
• determine, from among the at least one mobile terminal, a control target terminal that is subjected to control of a state transition between a CONNECTED state and an IDLE state, based on the communication of the at least one mobile terminal;
• determine a parameter which indicates an idle transition interval of the control target terminal;
• and
• supply a radio base station with the parameter,
• wherein the radio base station is arranged in a radio access network and is configured to:
• perform the control of the state transition of the control target terminal based on the parameter.