Patent ID: 7386311

Claim:
A communication system comprising: a home mobile communication network for providing to a mobile unit of a user under a contractual agreement with said home mobile communication network a roaming service via a foreign mobile communication network; and a contents server for transmitting to said mobile unit contents via said home mobile communication network, or via said mobile communication network and said foreign mobile communication network, wherein said contents include transmittable contents that are accessible via the home mobile communication network and the foreign mobile communication network, and non-transmittable contents accessible via the home mobile communication network, wherein said home mobile communication network comprises: data relaying means for receiving a data signal addressed to said contents server and transmitted from said mobile unit, and transmitting to said contents server the received data signal; storage means for storing contents identification information identifying said non-transmittable contents which are designated not to be transmitted to said mobile unit in said foreign mobile communication network among said transmittable contents that can be transmitted from said contents server; and rejection means for determining presence of roaming identification information added to said data signal received from said home mobile unit in said foreign mobile communication network and transmitted to said contents server, and for rejecting a request for any one of said non-transmittable contents denoted by said contents identification information stored in said storage means, contained in said data signal which is received by said data relaying means, addresses to said contents server and transmitted from said mobile unit in said foreign mobile communication network, if the roaming identification information is determined to be present.