Mobile communication method, radio access network apparatus and mobile station

A mobile station wherein

• the mobile station transmits a start request signal for circuit-switched type of communications to a mobility management node via a radio access network apparatus of a first communication system that does not support circuit-switched type of communications after a receipt notification signal or a paging signal is received by the mobile station, and
• when priority call information is contained in a handover request signal received from the radio access network apparatus of the first communication system after the start request signal for circuit-switched type of communications is transmitted, the mobile station transmits a signal containing the priority call information to a radio access network apparatus of the second communication system.

4-5. (canceled)