Question: In a 1.28 Mcps TDD network (Release 9 and later), what is the primary metric used to determine the performance requirement for a Dedicated Channel (DCH) in high-speed train conditions, specifically for User Equipment (UE) conformance testing?
Option 1: Signal-to-Noise Ratio (SNR)
Option 2: Throughput
Option 3: Latency
Option 4: Block Error Ratio (BLER)
Explanation: The correct answer is Option 4 because the performance requirement of a Dedicated Channel (DCH) under high-speed train conditions is determined by the maximum Block Error Ratio (BLER), reflecting the reliability and robustness of data transmission, especially in challenging environments like high-speed trains.