Question: Upon receiving a Random Access Response, what action should a User Equipment (UE) take if the response contains a Random Access Preamble identifier matching its transmitted preamble?
Option 1: The UE shall re-select a new preamble and transmit with updated NPRACH transmission power immediately.
Option 2: The UE may stop monitoring for further Random Access Responses and proceed to transmit msg3.
Option 3: The UE should initiate a backoff timer before re-transmitting the same preamble at the current power level.
Option 4: The UE must discard the response and restart the entire random access procedure from the beginning.
Explanation: According to the specified behavior for receiving Random Access Response, if the response contains a Random Access Preamble identifier that corresponds to the transmitted Random Access Preamble, the UE is allowed to stop monitoring for additional responses and should proceed with transmitting msg3. This ensures efficient use of resources by moving forward in the process once a matching response is received.