In the disclosed registration and authentication scheme, in the case of carrying out the registration and authentication of a wireless terminal with respect to a wireless base station provided inside the home, for example, a user of the wireless terminal must directly operate the wireless base station. For this reason, it is possible to prevent the registration and authentication of a wireless terminal of an external user who cannot easily operate the wireless base station, and thereby it is possible to realize the secure and easy registration and authentication processing even when the wireless communications are used.