Key technologies of WLAN accessing 3GPP PS based services

As a part of the mobile data network, WLAN offers a high-speed Internet access service. Scenario 3 defined in 3GPP TR 22.934 proposes that WLAN can access 3GPP PS based services that attracts interests for WLAN and 3GPP interoperability. The paper proposes the interworking network reference model which support roaming and non-roaming, and discusses some key technologies introduced in scenario 3.