Patent ID: 8254873

Claim:
A mobile communication system in which a radio device configured to transmit notification information transmitted from a distribution server, to a mobile station by use of broadcast communication, wherein: the radio device comprises: a creation unit configured to create, on the basis of the notification information received from the distribution server, simplified information indicating content of the notification information, and detailed information indicating content of the notification information with a greater amount of information than that of the simplified information; a simplified information transmitter unit configured to transmit the simplified information to the mobile station by use of a PCCH (Paging Control Channel) for starting the broadcast communication; a system information update request transmitter unit configured to transmit a system information update request via a BCCH (Broadcast Control Channel), wherein the BCCH is a control channel for broadcast communication; and a detailed information transmitter unit configured to transmit the detailed information to the mobile station by use of a CTCH (Common Traffic Channel) after the system information update request transmitter unit transmits the system information update request via the BCCH, wherein the system information update request instructs the mobile station to refer to the CTCH for the broadcast communication, and the mobile station comprises a display unit configured to display the detailed information transmitted using the CTCH, after displaying the simplified information transmitted using the PCCH.