Question: What is a requirement for Lawful Interception during an ongoing session (packet data or voice) involving a target UE, in the event of an S-GW/BBIFF relocation?
Option 1: The interception must restart with new correlation identifiers after the relocation.
Option 2: The lawful interception of voice calls involving the target shall continue uninterrupted and correlate IRI events and CC before and after the relocation.
Option 3: All ongoing sessions must be terminated during the S-GW/BBIFF relocation to ensure security.
Option 4: The target UE is temporarily excluded from interception during the relocation process for network stability.
Explanation: For seamless and effective lawful interception, continuity is crucial, especially during network adjustments like S-GW/BBIFF relocations. Correlating IRI (Interception Related Information) events and CC (Content of Communication) before and after such a relocation ensures that the integrity of the intercepted data is maintained, supporting uninterrupted surveillance as mandated by law enforcement requirements. This approach upholds both the continuity of service for the UE and the legal obligations for interception.