VISITED NETWORK, HOME NETWROK, SYSTEM AND CORRESPONDING METHOD FOR USING SERVICE OF VISITED NETWORK, AND TERMINAL

摘要

Embodiments of the present invention discloses a visited network, a home network, a visited network service using system, a terminal, and a method for activating a visited network service. An embodiment of method for activating a visited network service includes: registering a registration message of a home terminal in a visited network to a home network from the visited network; notifying, by a home virtual roaming management (HVRM) unit in the home network, the home terminal to register virtual terminal information thereof at the visited network after confirming that the virtual terminal information of the home terminal in the visited network is activated; selecting, by a virtual terminal, a required visited network service and sending a log-in application of visited network service subscription information to a visiting virtual roaming management (VVRM) unit in the visited network; and activating, by the VVRM unit in the visited network, the visited network service subscription information for the virtual terminal. By activating the virtual terminal information of a visiting terminal in the visited network, an identity of the virtual terminal is assigned to the visiting terminal, so that the visiting terminal enjoys the service provided by the visited network on behalf of the identity of the virtual terminal.