Question: What is the primary objective of the MBMS UE Linking procedure in the UTRAN Iu interface Radio Access Network Application Part (RANAP) signalling?
Option 1: To establish a new Iu-ps signalling connection for a UE requesting Multicast Services.
Option 2: To inform the RNC about changes in a UE's subscription to one or multiple Multicast Services, utilizing an existing Iu-ps signalling connection.
Option 3: To manage resource allocation for dedicated channels in MBMS transmissions.
Option 4: To handle handover procedures for UEs receiving Multicast Services.
Explanation: The correct answer is Option 2 because the MBMS UE Linking procedure specifically aims to update the RNC on changes (joins or leaves) in a UE's Multicast Service subscriptions, leveraging an already established Iu-ps signalling connection. This ensures efficient management of multicast groups without requiring new connections for each service change.