Question: In UTRAN Iub interface NBAP signalling, what is the primary distinction between Type 1 and Type 2 Timing Adjustment Value (TAV) in the context of TDD Frame timing correction for Node B synchronization?
Option 1: Type 1 is for steady-state phase with finer granularity, while Type 2 is for initial phase with coarser adjustment.
Option 2: Type 1 and Type 2 differ in the direction of timing adjustment (advance vs. delay).
Option 3: The types are interchangeable based on Node B configuration preferences.
Option 4: Type 1 is used for the initial phase of Node B synchronization, while Type 2 is used for the steady-state phase.
Explanation: The correct answer highlights that the key distinction lies in the phase of synchronization they serve: Type 1 for setting up initial synchronization and Type 2 for maintaining steady-state synchronization. This differentiation is crucial for efficient network operation, ensuring precise timing adjustments during different stages of Node B setup and ongoing operation.