Mobile terminals, and earthquake and tsunami warning system

A mobile terminal for use in a network comprising a macro base station and a home base station, comprising:

• a paging receiving section for receiving paging transmitted from the macro base station;
• an ETWS receiving section for receiving ETWS information transmitted from the macro base station when the paging includes a start signal of the ETWS information;
• a detecting section for detecting a home base station when the ETWS information is received;
• and
• an ETWS transmitting section for, when the detecting section detects a home base station, transmitting the ETWS information to the detected home base station.

An Earthquake and Tsunami Warning System, comprising:

• a macro base station;
• a home base station;
• and
• a mobile terminal,
• wherein the mobile terminal comprises:
• a paging receiving section for receiving paging transmitted from the macro base station or the home base station;
• a control section for controlling the paging receiving section to receive paging from the macro base station even when the mobile terminal is in connection with the home base station and in an idle state;
• an ETWS receiving section for receiving ETWS information transmitted from the macro base station when the received paging indicates that the ETWS information is present;
• and
• an ETWS transmitting section for transmitting the ETWS information to the home base station, and
• wherein the home base station comprises:
• an ETWS receiving section for receiving the ETWS information transmitted from the mobile terminal;
• an ETWS transmitting section for, when the ETWS receiving section receives the ETWS information, transmitting system information that includes the ETWS information received from the mobile terminal.

A control method for a mobile terminal for use in a network comprising a macro base station and a home base station, the method comprising:

• in the mobile terminal,
• receiving paging from the macro base station even when the mobile terminal is in connection with the home base station and in an idle state;
• receiving ETWS information transmitted from the macro base station when the received paging indicates that the ETWS information is present;
• and
• transmitting the ETWS information to the home base station.

A control method for a home base station for use in a network comprising a macro base station and a home base station, the method comprising:

• in the home base station,
• receiving ETWS information transmitted from a mobile terminal in response to the ETWS information being received from a macro base station;
• and
• when the ETWS information is received, transmitting system information that includes the ETWS information received from the mobile terminal.