Mobile terminal, mobile communication system, base station searching method, and storage medium storing base station searching program

1. A mobile terminal comprising:

an acquisition unit that acquires unique information of a base station using a first wireless communication method and capable of being connected by its own mobile terminal, from a different mobile terminal being connected to the base station, by communication with the different mobile terminal by using a second wireless communication method; and

a search unit that searches a transmission frequency of the base station included in the unique information.

2. The mobile terminal according to claim 1 , wherein a transmission distance by the second wireless communication method is shorter than a transmission distance by the first wireless communication method.

3. The mobile terminal according to claim 2 , wherein the second wireless communication method is a wireless LAN (Local Area Network) method prescribed by IEEE (Institute of Electrical and Electronics Engineers) 802.11.

4. The mobile terminal according to claim 1 , wherein the search unit searches all transmission frequencies that can be used by the base station when the unique information is not acquired by the acquisition unit.

5. A mobile terminal comprising:

a connection unit that connects to a base station by using a first wireless communication method; and

a notification unit that notifies unique information including a transmission frequency of the base station to a different mobile terminal requiring the unique information, by communication with the different mobile terminal by using a second wireless communication method.

6. The mobile terminal according to claim 5 , wherein a transmission distance by the second wireless communication method is shorter than a transmission distance by the first wireless communication method.

7. The mobile terminal according to claim 6 , wherein the second wireless communication method is a wireless LAN method prescribed by IEEE 802.11.

8. A mobile communication system comprising:

a base station;

a first mobile terminal that connects to the base station by using a first wireless communication method; and

a second mobile terminal that acquires unique information of the base station from the first mobile terminal by communication with the first mobile terminal by using a second wireless communication method, and searches a transmission frequency of the base station included in the unique information.

9. A base station searching method in a mobile terminal, comprising:

acquiring unique information of a base station using a first wireless communication method and capable of being connected by the mobile terminal, from a different mobile terminal being connected to the base station, by communication with the different mobile terminal by using a second wireless communication method; and

searching a transmission frequency of the base station included in the unique information.

10. The base station searching method according to claim 9 , wherein as the second wireless communication method, a wireless communication method where a transmission distance is shorter than a transmission distance by the first wireless communication method is used.

11. The base station searching method according to claim 10 , wherein as the second wireless communication method, a wireless LAN method prescribed by IEEE 802.11 is used.

12. The base station searching method according to claim 9 , wherein all transmission frequencies that can be used by the base station are searched when the unique information cannot be acquired from the different mobile terminal.

13. A storage medium that stores a base station searching program for causing a mobile terminal to execute:

a process to acquire unique information of a base station using a first wireless communication method and capable of being connected by the mobile terminal, from a different mobile terminal being connected to the base station, by communication with the different mobile terminal by using a second wireless communication method; and

a process to search a transmission frequency of the base station included in the unique information.