Question: Which of the following accurately describes the purpose of the 'E-UTRA – NR CELL RESOURCE COORDINATION REQUEST' message in an EN-DC (Evolved Network Dual Connectivity) scenario?
Option 1: To request a handover of a UE from an eNB to an en-gNB or vice versa, based on load balancing.
Option 2: To coordinate and express the desired resource allocation for data traffic between E-UTRA and NR cells for efficient use of resources.
Option 3: To establish or modify a bearer for a UE connected to both E-UTRA and NR, focusing on QoS parameters.
Option 4: To provide neighboring node information for optimizing paging procedures in idle mode UEs.
Explanation: The 'E-UTRA – NR CELL RESOURCE COORDINATION REQUEST' message is used for coordinating resource allocation between E-UTRA (4G/LTE) and NR (5G) cells, ensuring efficient data traffic management and resource utilization in EN-DC scenarios where a UE utilizes resources from both cell types simultaneously.