Patent ID: 8331304

Claim:
A mobile communication method comprising the steps of: transmitting, from a mobile station to a radio access network apparatus, an AS connection establishment response signal in a procedure for establishing an AS connection between the mobile station and the radio access network apparatus, the AS connection establishment response signal including a NAS connection establishment request signal, which is transmitted to a mobile switching center, for establishing a NAS connection for specific communication between the mobile station and a specific destination; transmitting, from the radio access network station to the mobile switching center, the NAS connection establishment request signal; transmitting, from the mobile switching center to the radio access network apparatus, a rejection signal in response to the NAS connection establishment request signal, the rejection signal including restriction time period and rejecting the establishment of the NAS connection; transmitting, from the radio access network apparatus to the mobile station, the rejection signal including the restriction time period; and restricting, at the mobile station, the transmission of the NAS connection establishment signal after the mobile station receives the rejection signal until expiry of the restriction time period.