Question: In a carrier aggregation scenario, where are E-RAB related measurements solely performed?
Option 1: On all aggregated Secondary Cells (SCells)
Option 2: Across both Primary Cell (PCell) and Secondary Cells (SCells) equally
Option 3: Only on the cell with the strongest signal at the time of measurement
Option 4: Exclusively on the Primary Cell (PCell)
Explanation: In carrier aggregation, a key aspect of advanced LTE and 5G networks, the Primary Cell (PCell) plays a crucial role as the anchor point for control signaling. For E-RAB related measurements, focusing solely on the PCell ensures consistency and reliability in performance management, given the PCell's central role in managing connections and bearers across aggregated carriers. This approach simplifies measurement collection and analysis, aligning with efficient network operations principles.