Question: Under AWGN conditions, what is the primary basis for determining the reporting accuracy of Channel Quality Indicator (CQI) in E-UTRA?
Option 1: Reporting variance and BLER performance using the transport format indicated by the reported CQI mean.
Option 2: Input SNR levels only, with a focus on sensitivity at a single SNR value.
Option 3: The consistency of CQI values across all possible SNR levels without any offset consideration.
Option 4: Reporting variance and BLER performance using the transport format indicated by the reported CQI median.
Explanation: This answer highlights that both reporting variance and BLER performance are crucial, specifically using the transport format indicated by the reported CQI median. This emphasizes the importance of median CQI values in assessing reporting accuracy across varying SNR conditions.