Question: What is the primary purpose of the Np reference point between the RCAF (RAN Congestion Awareness Function) and the PCRF (Policy and Charging Rules Function) in a telecom network?
Option 1: To manage Quality of Service (QoS) parameters for individual subscribers.
Option 2: To facilitate direct communication between User Equipment (UE) and the Core Network.
Option 3: To transport RAN User Plane Congestion Information (RUCI) for congestion mitigation policy enforcement.
Option 4: To handle billing and charging data for all network services.
Explanation: The Np reference point is specifically defined to enable the transport of RAN User Plane Congestion Information (RUCI) from the RCAF to the PCRF, crucial for implementing effective congestion mitigation policies, ensuring optimal network performance and user experience.