Question: In 3GPP-compliant TDD mode, when testing a User Equipment's (UE) conformance to supported frequency bands as declared by the manufacturer, what determines the selection of UARFCN values for testing across different frequency ranges?
Option 1: The UE's maximum transmission power capability
Option 2: The number of frequency bands supported by the UE
Option 3: Definitions outlined in 3GPP specifications for low, mid, and high range of the operating frequency band
Option 4: The type of antenna used in the UE
Explanation: When testing a UE's conformance to its declared supported frequency bands in TDD mode, the selection of UARFCN values for testing across low, mid, and high ranges of the operating frequency band is crucial. According to 3GPP specifications, these specific UARFCN values are predefined to ensure standardized testing conditions. This approach ensures that UEs are tested under uniform conditions, facilitating accurate assessment of their performance and compliance with 3GPP standards.