Method and system for user roaming and service roaming in a digital broadcasting system

A method of providing a roaming service to a terminal in a mobile broadcasting system, comprising:

• receiving a roaming proposal message from a terminal that has entered from a home network operated by a home service provider to a foreign network operated by a foreign service provider, and determining whether a roaming type indicated by the roaming proposal message is user roaming or service roaming;
• providing an intended service to the terminal from the foreign service provider, if the roaming type is the user roaming;
• and
• receiving the intended service from the home service provider and providing the intended service to the terminal, if the roaming type is the service roaming.

A terminal apparatus for receiving a roaming service in a mobile broadcasting system, comprising:

• a broadcasting receiver for accessing a broadcasting network and receiving data and signaling of a broadcasting service;
• an interactive adaptor for accessing an interactive network connected to the broadcasting network and sending and receiving signals associated with the roaming service;
• and
• a mobility manager (MM) for
• selecting a roaming type between user roaming and service roaming by determining if an intended broadcasting service is provided from a foreign network operated by a foreign service provider based on an Electronic Service Guide (ESG) received from the foreign service provider after entering into the foreign network,
• controlling the broadcasting receiver to receive the intended service from the foreign service provider, if the roaming type is the user roaming, and controlling the interactive adaptor to receive the intended service from a home service provider over the interactive network, if the roaming type is the service roaming.

A network apparatus for providing a roaming service to a terminal in a mobile broadcasting system, comprising:

• a home service provider to which a terminal capable of receiving a broadcasting service has subscribed to;
• and
• a foreign service provider for
• receiving a roaming proposal message from the terminal when the terminal enters from a home network operated by the home service provider into a foreign network,
• determining if a roaming type indicated by the roaming proposal message is user roaming or service roaming,
• providing an intended service to the terminal from the foreign service provider, if the roaming type is the user roaming, and
• receiving the intended service from the home service provider and providing the intended service to the terminal, if the roaming type is the service roaming.