Question: What is a primary purpose of an eNB sending an ENB CONFIGURATION UPDATE message to its neighbor eNBs when dynamically changing coverage configurations?
Option 1: To synchronize Active Antenna Systems functions across all eNBs in the network.
Option 2: To notify neighbors about modified cell coverage for optimizing Mobility Robustness Optimisation and minimizing connection failures.
Option 3: To initiate a network-wide update of all eNB configurations to match the new setup.
Option 4: To request neighbor eNBs to perform a manual restart after receiving the update.
Explanation: The correct answer, Option 2, highlights the key reason for sending an ENB CONFIGURATION UPDATE message in the context of dynamic coverage configuration changes. This notification enables neighboring eNBs to adjust their Mobility Robustness Optimisation settings and avoid potential connection or re-establishment failures by being informed about the coverage state changes (e.g., inactive cells). This demonstrates a nuanced understanding of inter-eNB communication for optimizing network performance during dynamic reconfigurations, as per 3GPP specifications for E-UTRAN.