Question: Upon receiving an LWIP (Lightweight IP) release command in an E-UTRA (Evolved Universal Terrestrial Radio Access) network, what action does the User Equipment (UE) take regarding the DRBs (Data Radio Bearers) using LWIP resources?
Option 1: The UE indicates to higher layers to **suspend** all DRBs from using the LWIP resources temporarily.
Option 2: The UE **modifies** the existing DRBs to utilize alternative resources instead of LWIP.
Option 3: The UE **continues** to allow all DRBs to use the LWIP resources without interruption.
Option 4: The UE indicates to higher layers to **stop** all DRBs from using the LWIP resources.
Explanation: When an LWIP release is initiated, the UE must free up resources associated with LWIP. Stopping all DRBs from utilizing LWIP resources is necessary for fully releasing the LWIP configuration and tunnel, ensuring resource allocation integrity and security in wireless communications.