A radio network controller can set up a connection with a mobile station
located in a specific cell under control of the radio network controller.
The radio network controller includes a connection setup request
transmitter configured to transmit a connection setup request for request
to set up the connection to the mobile station located in the specific
cell; and a judger configured to judge whether or not to need to acquire
information of the mobile station located in the specific cell. The
connection setup request transmitter is configured to transmit the
connection setup request to the mobile station located in the specific
cell, when the judger judges to need to acquire the information of the
mobile station.