Question: In a scenario where a UE (User Equipment) does not receive a Random Access Response, what action is taken after the backoff time expires, assuming the first two preamble transmission attempts were ignored by the System Simulator?
Option 1: The UE maintains the current preamble and transmits at the same power level as the previous attempt.
Option 2: The UE selects a new Random Access Preamble but transmits with reduced power to avoid interference.
Option 3: The UE re-selects a preamble and transmits with the calculated NPRACH transmission power.
Option 4: The UE enters idle mode, awaiting manual re-initiation of the random access process.
Explanation: According to the specified behavior for handling no Random Access Response reception, after the backoff time expires (following ignored initial attempts), the UE is required to re-select a preamble. Additionally, it must transmit this new preamble using the calculated NPRACH transmission power, ensuring adherence to power control specifications for efficient and non-disruptive network access.