Patent ID: 7912477

Claim:
A mobile communication system in which a visited network and a home network are connected with each other via a core network, comprising: a visited user plane device provided on the visited network, connected with a mobile terminal, providing a visited network bearer resource for an end-to-end service that goes through the visited network, the core network and the home network between the mobile terminal and a counterpart side device, and relaying data of the end-to-end service by the visited network bearer resource; a home gateway device provided on the home network, connected with the mobile terminal via the core network and the visited user plane device on the visited network, providing a core network bearer resource for the end-to-end service, and relaying data of the end-to-end service by the core network bearer resource; a visited policy controlling device provided on the visited network, and deciding the amount of the visited network bearer resource that is provided by the visited user plane device for the end-to-end service based on the amount of bearer service resource required for using in the end-to-end service; and a home policy controlling device provided on the home network, and deciding the amount of the core network bearer resource that is provided by the home gateway device for the end-to-end service based on the amount of the bearer service resource required for using in the end-to-end service, and performing processing to match the amount of the core network bearer resource decided by itself and the amount of the visited network bearer resource decided by the visited policy controlling device, if they do not match.