Question: Upon transitioning to RRC_CONNECTED mode in an NB-IoT scenario, if the neighCellMeasCriteria is present in SystemInformationBlockType3-NB, what action does the UE take regarding NRSRPRef and timer T326 if the relaxed monitoring criterion was not fulfilled?
Option 1: Sets NRSRPRef to the latest serving cell measurement result and starts T326 with the value t-MeasureDeltaP.
Option 2: Resets NRSRPRef without updating it from the latest measurements and stops any running T326 timer.
Option 3: Updates NRSRPRef based on neighboring cell measurements and restarts T326 if already running.
Option 4: Does not update NRSRPRef but starts T326 only if it's not already running.
Explanation: When transitioning to RRC_CONNECTED mode in NB-IoT, if neighCellMeasCriteria is present and the relaxed monitoring criterion was not met, the UE must set NRSRPRef to the latest result of the serving cell measurement used for cell selection/reselection evaluation. Additionally, it starts timer T326 with a predefined value, ensuring the UE is prepared for potential handovers or adjustments based on signal strength changes, aligning with efficient radio resource management in NB-IoT networks.