Question: In a Multi-Standard Radio (MSR) Base Station (BS) setup, as per 3GPP specifications, which performance metric is used to assess uplink immunity for both E-UTRA and Narrowband Internet of Things (NB-IoT)?
Option 1: Block Error Rate (BLER)
Option 2: Bit Error Rate (BER)
Option 3: Signal-to-Noise Ratio (SNR)
Option 4: Throughput
Explanation: According to the specifications for assessing uplink performance in immunity tests, both E-UTRA and NB-IoT specifically require monitoring of "Throughput". This highlights the importance of maintaining effective data transfer rates under potentially interfering conditions for these technologies. In contrast, BLER is focused on UTRA (both FDD and TDD), BER is emphasized for GSM/EDGE, and SNR, while relevant in general RF contexts, is not explicitly mentioned for these specific uplink assessments.