Question: In a TDD radio resource management test scenario for verifying SFN-SFN observed time difference type 2 measurement accuracy, how are Cell 1 and Cell 2 synchronized in terms of frame timing?
Option 1: They operate with independent frame timings to simulate real-world asynchrony.
Option 2: Cell 2's frame timing is offset by a fixed 216 chips from Cell 1's timing.
Option 3: They are fully synchronized, sharing the same frame timing, but can have a configurable timing difference in chip values.
Option 4: The synchronization method varies based on the specific SFN-SFN measurement type being tested.
Explanation: In testing SFN-SFN observed time difference type 2 measurement accuracy in TDD, both cells share the same base frame timing for controlled measurement. A configurable timing difference (e.g., -432 to 432 chips) between cells can be introduced while maintaining fundamental synchronization, allowing precise testing of measurement accuracy under specified limits.