Question: What is the condition for determining the wideband CQI index for codeword #1 in a UE Category ≥5, using the reported offset level of the wideband spatial differential CQI?
Option 1: The wideband CQI1 shall be within the set {median CQI1 -2, median CQI1, median CQI1 +2} for more than 80% of the time.
Option 2: The wideband CQI1 shall be equal to the median CQI1 for more than 90% of the time.
Option 3: The wideband CQI1 shall be within the set {median CQI1 -1, median CQI1, median CQI1 +1} for more than 90% of the time.
Option 4: The wideband CQI1 shall be greater than or equal to the median CQI1 for more than 95% of the time.
Explanation: According to the requirements specified in table 9.9.1.4.1-1, the wideband CQI index for codeword #1 is determined using the reported offset level of the wideband spatial differential CQI, and it shall be within the set {median CQI1 -1, median CQI1, median CQI1 +1} for more than 90% of the time. This ensures that the UE can accurately report the channel quality to the eNodeB, which is essential for efficient resource allocation and link adaptation in LTE networks.