Question: What is the primary objective of the UE Radio Capability ID Mapping procedure in E-UTRAN, as utilized between eNB and gNB?
Option 1: To establish UE-associated signaling for handover preparation.
Option 2: To optimize radio resource allocation based on real-time traffic.
Option 3: To retrieve UE Radio Capability information from a connected eNB using non-UE-associated signaling.
Option 4: To initiate a security context transfer between different eNBs.
Explanation: The correct answer, Option 3, aligns with the procedure's purpose as described. The UE Radio Capability ID Mapping procedure is specifically designed to allow an en-gNB (evolved Node B) to request and obtain UE (User Equipment) Radio Capability information from a connected eNB (eNode B), utilizing non-UE-associated signaling. This process enhances the network's ability to manage and optimize connections without directly involving the UE in the signaling exchange, which is crucial for efficient network operation and planning.