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Methods for managing interoperation between a visited 3GPP network having a 3GPP and WLAN access network and a home 3GPP network for a roaming mobile station, as well as corresponding SGSN node and TTG gateway
Methods for managing interoperation between a visited 3GPP network having a 3GPP and WLAN access network and a home 3GPP network for a roaming mobile station, as well as corresponding SGSN node and TTG gateway
The method involves determining a communication identifier i.e. Internet protocol address, of a gateway general packet radio service support node (GGSN) (NG). An end-to-end tunnel (T2) i.e. gateway tunneling protocol type tunnel, is established between a tunnel termination gateway (TTG) and the node. The determination and the establishments are performed during transmission of an requirement of establishment of a communication session, to a visited wireless local area network (RW) e.g. Wireless fidelity (WiFi) network. Independent claims are also included for the following: (1) a tunnel termination gateway arranged for determining a communication identifier of a gateway general packet radio service support node (2) a serving general packet radio service support node arranged for transmitting a request to a tunnel termination gateway.
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