Question: In an MBMS (Multimedia Broadcast/Multicast Service) deployment over GERAN (GSM/EDGE Radio Access Network), what is the primary purpose of notifying UEs in READY or STANDBY states when an MBMS Session starts?
Option 1: To immediately allocate dedicated channels for each interested UE.
Option 2: To trigger detection/counting of UEs per cell for selecting the most appropriate MBMS radio bearer.
Option 3: To push MBMS content to all UEs in the specified Service Area without request.
Option 4: To prompt UEs to manually switch to a different network mode (e.g., from A/Gb to UMTS).
Explanation: The correct answer, Option 2, highlights the key reason for notifying interested UEs at the start of an MBMS Session: to facilitate the network's decision-making process regarding the optimal radio bearer configuration based on the number of potential receivers in each cell. This ensures efficient resource utilization and enhances the overall service quality. The other options misrepresent the primary purpose of this notification, focusing instead on resource allocation, content delivery, or network mode switching, which are not the immediate goals of the initial session start notification.