| 摘要 |
To improve probability of successfully performing origination processing by a priority terminal and origination processing of an emergency call even during congestion. In a mobile station UE according to the present invention, an AS function unit 11 is configured to receive SSAC information from a radio base station eNB and transmit the SSAC information to the NAS function unit 12 at a predetermined timing, and a NAS function unit 12 is configured to perform SSAC on transmission of "RA Preamble" in a RA procedure for the mobile station UE in the DRX state to transmit an uplink signal, or on transmission of an uplink signal from the mobile station UE in the Non-DRX state. |
