Question: In UTRAN Iub interface NBAP signalling, what is the primary purpose of the Reference Received Total Wide Band Power value when reported by the Node B to the CRNC?
Option 1: To optimize E-DCH scheduling for enhanced user throughput
Option 2: To facilitate handover decisions between different cell portions
Option 3: To adjust transmission power for reducing interference in neighboring cells
Option 4: To support admission or congestion control in the CRNC for resource management
Explanation: The correct answer is Option 4 because when the Node B reports the Reference Received Total Wide Band Power, it provides an estimate of the noise floor (UL interference level), crucial for the CRNC to make informed decisions regarding admission of new users or managing congestion within the network.