Techniques for Roaming Between Heterogeneous Wireless Networks

A method comprising:

• receiving, at a computing device, a request for authorization of user equipment (UE) to access a visited wireless local area network (WLAN);
• interworking the request for authorization of the UE to access the visited WLAN via an authentication, authorization and accounting (AAA) interworking function (AIF), interworking via the AIF to authenticate and authorize the UE for access to the visited WLAN via information received from a visited AAA server and received from a home AAA server, the visited AAA server associated with the visited WLAN and the home AAA server associated with a wireless wide area network (WWAN);
• and
• forwarding the interworked request for authorization to the visited AAA server.

At least one machine readable medium comprising a plurality of instructions that in response to being executed on a system cause the system to:

• receive an authorization request for user equipment (UE) to access a visited wireless local area network (WLAN), the authorization request received using a first remote authentication dial in user service (RADIUS) protocol for a wireless roaming intermediary exchange-interconnect WRIX-i or international roaming.61 (IR.61) interface;
• interwork the authorization request for the UE to access the visited WLAN via an authentication, authorization and accounting (AAA) interworking function (AIF), interworking via the AIF to authenticate and authorize the UE for access to the visited WLAN via information exchanged between a visited AAA server and a home AAA server, the visited AAA server associated with the visited WLAN and also associated with a wireless wide area network (WWAN) and the home AAA server associated with a different WLAN;
• and
• forward an authorization request to the visited AAA server.