Question: In a conformance testing setup for an NB-IoT UE, as per 3GPP specifications, what is the required state of the NB-IoT UE when performing tests under ideal radio conditions in a single cell environment?
Option 1: NB-IoT UE Idle Mode (State N/A)
Option 2: NB-IoT UE Connected mode, with Test Mode Activated (State 2A-NB)
Option 3: NB-IoT UE Power Saving Mode (State Not Defined in Context)
Option 4: NB-IoT UE Detached State (No Active Connection)
Explanation: For conformance testing of an NB-IoT UE under specified conditions (ideal radio, single cell environment), the device needs to be in a state that allows for active communication and testing of its connected mode functionalities. The "Connected mode" with "Test Mode Activated" (State 2A-NB) is specifically tailored for such comprehensive testing, ensuring the UE can respond as expected under test scenarios while being actively connected to the network. This state facilitates the evaluation of the UE's performance in a controlled, yet operational, environment.