MOBILE COMMUNICATION METHOD AND MOBILE STATION

摘要

The present invention relates to a mobile station configured to transmit a first service related signal addressed to a first exchange (SGSN) or a second service related signal addressed to a second exchange (MSC/VLR) to a radio network controller (RNC) so as to use a predetermined service. The mobile station comprises a transmission and reception unit (11) configured to set a radio channel to transmit signals to the radio network controller (RNC) and to receive at least an access restriction signal which restricts access to the first exchange (SGNSN) or the second exchange (MSC/VLR) from the radio network controller (RNC), and a determination unit (14) configured to transmit a first service related signal addressed to the first exchange (SGSN) and/or a second service related signal addressed to the second exchange (MSC/VLR) to the radio network controller (RNC) when using predetermined services. In the case where an access restriction signal is received from the radio network controller (RNC) with respect to the first exchange (SGSN) or the second exchange (MSC/VLR), the determination unit (14) is configured to transmit a service related signal addressed to the second exchange (MSC/VLR) or the first exchange (SGSN) being different from the first exchange (SGSN) or the second exchange (MSC/VLR) as notified with the access restriction signal.