Question: What is the primary purpose of the MBMS (Multimedia Broadcast Multicast Service) Service Counting procedure in an E-UTRAN (Evolved Universal Terrestrial Radio Access Network)?
Option 1: To count all UEs (User Equipment) in idle mode interested in MBMS services within a cell.
Option 2: To trigger the eNB (evolved Node B) to count connected mode UEs either receiving or interested in receiving MBMS service(s).
Option 3: To manage resource allocation for unicast transmissions in congested cells.
Option 4: To monitor the overall network load for voice calls only.
Explanation: The correct answer, Option 2, accurately reflects the purpose of the MBMS Service Counting procedure as described. It is specifically designed to count UEs that are in connected mode and have either an active reception or a declared interest in one or more MBMS services. This information is crucial for efficient resource management and service delivery by the eNB. The other options are incorrect because they either refer to idle mode UEs (Option 1), unrelated network management tasks (Option 3), or a different type of service altogether (Option 4).