Question: What is the purpose of transmitting the X2AP message HANDOVER REQUEST from the source eNB to the target eNB in an inter-eNB handover preparation?
Option 1: To initiate a handover procedure between two eNBs.
Option 2: To release resources allocated for a UE in the source eNB.
Option 3: To update the MME with the new eNB identity.
Option 4: To acknowledge receipt of a HANDOVER REQUIRED message.
Explanation: The transmission of the X2AP message HANDOVER REQUEST from the source eNB to the target eNB is an attempt to initiate an outgoing inter-eNB handover preparation, indicating that the source eNB is trying to hand over a UE to the target eNB. This is a crucial step in the handover procedure, allowing the network to prepare for the transfer of the UE's connection from one eNB to another.