Question: In a Lawful Interception scenario, as per 3GPP security standards, what is the triggering mechanism for generating a Packet Data Header Report on a per-packet basis?
Option 1: Periodic timer expiration in the PDN-GW
Option 2: Each packet sent or received by the target User Equipment (UE)
Option 3: Change in the UE's mobility state (e.g., handover, cell update)
Option 4: Receipt of a specific control plane message from the MME
Explanation: The correct answer is Option 2 because, according to the specified context, the Packet Data Header Report on a per-packet basis is triggered by each packet sent or received by the target UE. This implies a real-time, per-packet triggering mechanism, essential for detailed lawful interception requirements, ensuring all relevant data packets are reported without summarization.