Question: For UTRA FDD UEs capable of receiving HS-DSCH and HS-SCCH in CELL_FACH state, what metric determines the detection performance of the HS-SCCH?
Option 1: BLER (Block Error Rate) of the physical layer
Option 2: RLC SDU error rate (RLC SDU ER)
Option 3: Throughput of the HS-DSCH channel
Option 4: Signal-to-Noise Ratio (SNR) of the received HS-SCCH
Explanation: The detection performance of the High-Speed Shared Control Channel (HS-SCCH) is linked to the reliability of data transmission at the Radio Link Control (RLC) layer. The RLC SDU error rate (RLC SDU ER) indicates how accurately and reliably data packets are delivered, reflecting the efficacy of error detection and correction mechanisms for HS-SCCH, especially in CELL_FACH state where efficient resource allocation is crucial.