Patent ID: 8849236

Claim:
An emergency-information receiving method in which a plurality of mobile stations receives emergency information in a mobile communication system in which a radio base station is configured to transmit a plurality of types of system information repeatedly within a modification period to the mobile stations via a broadcast channel, and to notify the mobile stations of a predetermined trigger via the broadcast channel regardless of the modification period, the method comprising the steps of: (A) starting, at the mobile stations, receiving scheduling-information-notification system information at a current modification period without waiting until a next modification period starts, when detecting the predetermined trigger; and (B) receiving, at the mobile stations, emergency-information-notification system information on the basis of scheduling information notified by the received scheduling-information-notification system information, wherein, when an emergency-information-notification system information receiver unit of the mobile station detects a predetermined indicator included in a paging message, as the predetermined trigger, the mobile station starts receiving the scheduling-information-notification system information at the current modification period.