Question: In E-UTRA, what is the primary purpose of defining specific subcarrier spacings (e.g., 0.37 kHz and 2.5 kHz) for a User Equipment (UE) in a particular band?
Option 1: To enable UE to switch between FDD and TDD modes seamlessly.
Option 2: To support MBMS reception with additional subcarrier spacings in FeMBMS/Unicast mixed cells or MBMS-Dedicated cells, beyond the standard spacing.
Option 3: To enhance UE's capability for carrier aggregation across different E-UTRA bands.
Option 4: To improve handover success rates between different eNodeBs.
Explanation: The correct answer highlights the purpose of these parameters in the context of MBMS operations, indicating UEs can support additional subcarrier spacings (0.37 kHz and 2.5 kHz) for receiving MBMS transmissions in mixed or dedicated cells, enhancing broadcast/multicast efficiency and flexibility in E-UTRA networks.