| 摘要 |
A method for serving visitor subscribers in a mobile communication system has been disclosed. The method, which is performed by a virtual visitor subsystem, VSS, included in the mobile communication system, comprises the following steps: detecting a roaming event on an MSISDN of a mobile station, MS, operating in the mobile communication system; determining a mobile network operator in the mobile communication system, having an HPLMN which covers a geographic area of the MS, to be a visitor mobile network operator of the MS; receiving a visitor IMSI from the visitor mobile network operator; assigning the visitor IMSI to the MSISDN of the MS; transmitting the visitor IMSI to the MS; intercepting an authentication initiation towards the visitor mobile network operator; authenticating the MS towards a home mobile network operator of the MS; and activating a visitor subscription identified by the visitor IMSI based on an authentication response received from the home mobile network operator. |
