Question: What protocol/service is utilized for terminating a session when ending an MBMS Streaming or combined MBMS Streaming and Download delivery method via Unicast Bearer Service?
Option 1: OMA-PUSH Protocol
Option 2: BM-SC Deregistration alone
Option 3: Packet Switched Streaming Service (PSS) as per 3GPP specifications
Option 4: Direct EPS Bearer Deactivation
Explanation: When terminating MBMS Streaming or a combined MBMS Streaming and Download delivery method, the focus is on ending the streaming aspect efficiently. The Packet Switched Streaming Service (PSS) is specifically designed for managing end-to-end packet-switched streaming services, making it the appropriate choice for terminating such sessions. This aligns with telecom best practices for service termination in multimedia broadcast scenarios, ensuring a structured conclusion to the streaming service without affecting other network operations.