Question: What functionality should Ta be able to provide before a NWt connection is established between the UE (User Equipment) and the TNGF (Trusted Non-3GPP Gateway Function)?
Option 1: Carry EAP-5G traffic, user location information, and allow IP traffic exchange between the UE and the TNGF.
Option 2: Only carry EAP-5G traffic and user location information, but not allow IP traffic exchange.
Option 3: Allow the UE to request and receive IP configuration from the TNAN (Trusted Non-3GPP Access Network), but not carry EAP-5G traffic or user location information.
Option 4: Only provide local IP address allocation to the UE.
Explanation: According to the requirements, Ta should be able to carry both EAP-5G traffic and user location information before the NWt connection is established. Additionally, it should allow the UE and the TNGF to exchange IP traffic, enabling communication between them. This ensures that the UE can establish a connection with the TNGF using its IP stack.