Question: For a 1.28 Mcps TDD User Equipment (UE: User Equipment) supporting High-Speed Downlink Packet Access (HSDPA) and Enhanced Dedicated Channel (E-DCH), what is the key performance indicator for E-detection as specified in 3GPP standards from Release 7 onwards?
Option 1: Received Signal Strength Indication (RSSI) accuracy
Option 2: Bit Error Rate (BER) threshold
Option 3: Handover Success Rate
Option 4: Missed Detection Probability
Explanation: The correct answer is Option 4 because, according to the provided context, the performance of E-detection for a 1.28 Mcps TDD UE (supporting HSDPA and E-DCH from Release 7 onwards) is specifically determined by the missed detection probability. This highlights the importance of reliable detection in maintaining efficient communication in UTRA (Universal Terrestrial Radio Access) networks, especially when advanced services like HSDPA and E-DCH are involved. Missed detection can lead to errors or failures in data transmission, making this metric crucial for assessing E-detection performance.