System and method to support the transfer of data packets from the Internet when a mobile node performs roaming from a home network to a visited network

摘要

A gateway packet data of a data network of domestic packages operable to communicate internet packets to and from a mobile node using an internet protocol, and to provide a communications session to the mobile node when the mobile node is affiliated with the data network of domestic packet data network of domestic packages including a home agent of the mobile node, where after receiving an Internet package with a binding update providing a valid local address CoA of the mobile node after a change of affiliation from the data network of domestic packet to a network packet data accessed, the network packet data accessed being operable to communicate internet packets to and from the mobile node to provide the communications session, when the mobile node is affiliated with the packet data network accessed, the gateway packet data is operable to: - establish a rut A for Internet packets between the home agent and the mobile node through the gateway packet data, to get the gateway packet data to control the communication of internet packets from the network data domestic packet to the mobile node and communicating internet packets received from the mobile node via the data network accessed packets when the mobile node is affiliated with data network accessed packages, - establish a tunnel Mobile Internet protocol for communicating internet packets to the mobile node in the visited network. - establishing a secure tunnel internet protocol between the gateway packet data mobile node and the Internet Protocol tunnel is arranged to be inside the security tunnel Internet Protocol.