Question: In a 3GPP-compliant 3.84 Mcps TDD network, what metric is primarily used to determine the receive characteristic of User Equipment (UE) for each individual data rate, particularly in relation to Multimedia Broadcast Multicast Services (MBMS)?
Option 1: Throughput Measurement
Option 2: Signal-to-Noise Ratio (SNR)
Option 3: RLC SDU Error Rate (SDU ER)
Option 4: Round-Trip Time (RTT) Variance
Explanation: The RLC SDU Error Rate is a key performance indicator for assessing the reliability of data transmission in wireless networks. For MBMS services, measuring the SDU ER at each data rate ensures that the UE can maintain service quality across varying network conditions, highlighting the importance of error rate in determining receive characteristics under such service requirements.