Question: In E-UTRAN, when a UE applies access network selection and traffic steering rules as per 3GPP specifications, what is the responsibility of the UE's higher layers regarding traffic routing between E-UTRAN and WLAN?
Option 1: Higher layers perform traffic steering between E-UTRAN and WLAN based on predefined rules.
Option 2: The UE's higher layers solely manage E-UTRAN connections, ignoring WLAN traffic.
Option 3: Higher layers prioritize WLAN over E-UTRAN for all data transmissions automatically.
Option 4: The decision to steer traffic is delegated to the E-UTRAN network, not the UE's higher layers.
Explanation: According to the telecom concept of access network selection and traffic steering in E-UTRAN (Evolved Universal Terrestrial Radio Access Network), when a User Equipment (UE) applies these rules, its higher layers are responsible for dynamically deciding how to distribute (steer) traffic between the cellular network (E-UTRAN) and Wi-Fi (WLAN) networks. This ensures efficient use of available networks based on predefined criteria such as network congestion, signal strength, or service requirements. Thus, the correct answer reflects this technical capability in telecom networks for optimizing user experience through intelligent traffic management.