Question: In NB-IoT operations within an E-UTRA carrier, what is the key difference in calculating the NB-IoT RB power dynamic range between in-band and guard band operations?
Option 1: The frequency band used for NB-IoT transmission (e.g., LTE band).
Option 2: The reference point for power comparison (Resource Elements (REs) vs. Resource Blocks (RBs)).
Option 3: The type of antenna configuration at the Base Station (BS).
Option 4: The modulation scheme employed by NB-IoT signals.
Explanation: For in-band operation, the NB-IoT RB power dynamic range is calculated based on the difference in average power between specific NB-IoT Resource Elements (REs) and all REs within the E-UTRA carrier. In contrast, for guard band operation, the calculation references the power of an entire NB-IoT Resource Block (RB, occupying 180kHz) against the average power over all RBs in the E-UTRA carrier. Thus, the key difference lies in the reference point for power comparison: REs for in-band vs. RBs for guard band operations.