Question: For a Base Station (BS) that supports multiple channel bandwidths, which of the following statements is true regarding the applicability of PUCCH format 2 for CQI performance testing?
Option 1: Tests are required for all supported channel bandwidths.
Option 2: Only the test for the median channel bandwidth supported by the BS is applicable.
Option 3: The test is only applicable if the BS supports a single channel bandwidth.
Option 4: Tests are only required for the lowest and the highest channel bandwidths supported by the BS.
Explanation: This answer reflects the efficient testing approach, ensuring the BS's performance is validated across its entire operational spectrum range (from the narrowest to the widest bandwidth it supports), without unnecessarily testing every single bandwidth configuration, verifying the BS's capability to handle varying channel conditions effectively.