Question: What is the purpose of the "DL Total PRB Usage" measurement in E-UTRAN?
Option 1: To measure the uplink resource block usage for UE-specific traffic.
Option 2: To provide the total usage percentage of physical resource blocks on the downlink for any purpose, including transmissions to/from RNs and UEs directly connected to the eNodeB.
Option 3: To calculate the average throughput of packet switched traffic in EPS.
Option 4: To monitor the number of active UEs in a cell.
Explanation: The "DL Total PRB Usage" measurement is used to determine the total usage percentage of physical resource blocks on the downlink for any purpose, including transmissions to/from RNs and UEs directly connected to the eNodeB. This measurement provides valuable insights into the overall resource utilization in E-UTRAN, enabling network operators to optimize their resources and improve network performance.