Question: In a 5G network, when the primary timing reference (e.g., GNSS) is degraded or lost, what is expected of the system regarding time synchronization for supported applications?
Option 1: The system will automatically switch to an asynchronous mode until the primary reference is restored.
Option 2: Time synchronization accuracy may be compromised but will be restored once the primary reference is available again.
Option 3: The system will only support real-time applications if an alternative timing source (e.g., Sync over Fiber) is immediately available.
Option 4: The system shall maintain accurate time synchronization by collaborating with different types of alternative time sources (e.g., TBS/MBS, Sync over Fiber).
Explanation: This option aligns with the requirement for enhanced timing resiliency in 5G systems. Maintaining accurate time synchronization, even in the event of primary timing reference degradation or loss, is crucial for supporting various applications. Collaborating with alternative time sources ensures robustness and continuity of service, reflecting a nuanced understanding of 5G's service requirements for timing resiliency.