Question: In a Random Access procedure, if a UE does not receive a Random Access Response after initial attempts, how should it proceed with re-transmitting the preamble?
Option 1: The UE should immediately switch to a different PRACH configuration.
Option 2: The UE must reduce its PRACH transmission power by a fixed step for each re-transmission.
Option 3: The UE will wait for a predefined backoff period before re-transmitting at the same power level as the first attempt.
Option 4: The UE shall re-transmit the preamble with the calculated PRACH transmission power, adhering to specified accuracy standards for additional preambles.
Explanation: This option correctly reflects the behavior for a UE not receiving a Random Access Response. The UE re-transmits the preamble using calculated PRACH transmission power, adjusting its transmission power for each attempt, crucial for managing radio resources efficiently and reducing interference in the network.