Question: In E-UTRAN, what is the primary purpose of the Correlation ID information element in the context of user plane transport between eNB and L-GW?
Option 1: To authenticate User Equipment (UE) for security procedures
Option 2: To manage Quality of Service (QoS) parameters for bearer services
Option 3: To identify the GTP Tunnel Endpoint or GRE key for user plane transport
Option 4: To synchronize handover procedures between eNBs
Explanation: The Correlation ID's role is to specify the GTP Tunnel Endpoint Identifier or GRE key, crucial for directing and managing user plane data traffic efficiently between the evolved Node Base station (eNB) and the Local Gateway (L-GW) in an E-UTRAN setup, ensuring proper routing and tunneling of packets.