Question: In ETC2 testing for Contiguous CA occupied bandwidth, when selecting component carrier combinations with the same sum of channel bandwidth, what is the primary criterion for selection at the Base Station RF Bandwidth edges?
Option 1: Select based on the widest carrier at both the lower and upper Base Station RF Bandwidth edges.
Option 2: Prioritize the narrowest carrier at the lower edge, then the narrowest carrier at the upper edge if multiple combinations exist.
Option 3: Choose the combination with the largest number of component carriers at both edges.
Option 4: Select based on the smallest sum of channel bandwidth of the outermost carriers at both the lower and upper Base Station RF Bandwidth edges.
Explanation: According to ETC2 generation rules, when dealing with component carrier combinations having the same sum of channel bandwidth, selection prioritizes the narrowest carrier at the lower edge (minimizing lower-end bandwidth usage), then the narrowest at the upper edge if multiple combinations exist, ensuring efficient bandwidth use across the range.