Question: In the context of Multimedia Broadcast/Multicast Service (MBMS) Streaming utilizing the Forward Error Correction (FEC) framework, what is the primary focus of methods aimed at reducing channel tune-in and switch times?
Option 1: Enhancing FEC decoding efficiency for improved error correction
Option 2: Optimizing IP layer protocols for faster packet routing
Option 3: Minimizing delay for MBMS senders and receivers during initial tune-in and channel switching
Option 4: Upgrading physical layer transmission rates for all MBMS transmissions
Explanation: The correct answer, Option 3, aligns with the objective of reducing the time it takes for MBMS senders and receivers to switch channels or initially tune in, as outlined in the context. This focus on minimizing delay during these specific events highlights the importance of efficient channel management in maintaining a seamless user experience for MBMS Streaming services. Options 1, 2, and 4, while potentially beneficial for overall system performance, do not directly address the primary concern of reducing tune-in and switch times as specified.