Radio communication system, server, and message notification method

A server comprising:

• an area information retrieving unit that retrieves, when a specified phenomenon occurs, information representing an area where the specified phenomenon occurs;
• a subscriber information retrieving unit that retrieves subscriber information of a second user terminal from a subscriber information management server, based on the information representing the area where the specified phenomenon occurs, wherein the subscriber information management server manages, for each of user terminals, the subscriber information and information representing a base station which serves for the user terminal while associating the subscriber information with the information representing the base station, wherein the information representing the area where the specified phenomenon occurs is retrieved by the area information retrieving unit, and wherein the second user terminal is served by the base station which is installed in the area where the specified phenomenon occurs;
• a personal information checking unit that checks the personal information against the subscriber information, and that identifies a first user terminal that includes the personal information including the subscriber information, wherein the personal information is managed by a personal information database that manages the personal information stored in the first user terminal, and the subscriber information is retrieved by the subscriber information retrieving unit;
• and
• a message transmitting unit that reports to the first user terminal which is identified by the personal information checking unit that there is a user of the second user terminal in the area where the specified phenomenon occurs, wherein the second user terminal includes the subscriber information, and wherein the subscriber information is included in the personal information of the first user terminal.

A message notification method comprising:

• an area information retrieving step of retrieving, when a specified phenomenon occurs, information representing an area where the specified phenomenon occurs;
• a subscriber information retrieving step of retrieving subscriber information of a second user terminal from a subscriber information management server, based on the information representing the area where the specified phenomenon occurs, wherein the subscriber information management server manages, for each of user terminals, the subscriber information and information representing a base station which serves for the user terminal while associating the subscriber information with the information representing the base station, wherein the information representing the area where the specified phenomenon occurs is retrieved by the area information retrieving step, and wherein the second user terminal is served by the base station which is installed in the area where the specified phenomenon occurs;
• a personal information checking step of checking the personal information against the subscriber information, and identifying a first user terminal that includes the personal information including the subscriber information, wherein the personal information is managed by a personal information database that manages the personal information stored in the first user terminal, and the subscriber information is retrieved by the subscriber information retrieving step;
• and
• a message transmitting step of reporting to the first user terminal which is identified by the personal information checking step that there is a user of the second user terminal in the area where the specified phenomenon occurs, wherein the second user terminal includes the subscriber information, and wherein the subscriber information is included in the personal information of the first user terminal.