Question: What is the primary benefit of the UE Context Resume function in E-UTRAN, particularly for UEs transitioning to RRC_IDLE state?
Option 1: Reduced signaling overhead during initial attach procedures
Option 2: Avoidance of re-establishing the UE Context in eNB upon resuming RRC connection
Option 3: Enhancement of QoS for real-time services during idle mode
Option 4: Improved security key management for dormant UEs
Explanation: The correct answer highlights the key advantage of the UE Context Resume function. By keeping the UE Context in the eNB even when a User Equipment (UE) is in RRC_IDLE state, the network can swiftly resume the RRC connection without the overhead of re-establishing the context, streamlining the process for UEs to regain active connectivity and enhancing overall network efficiency and user experience.