 maximum value and therefore the preambles cannot be detected by the eNodeB. Message 2, the Random Access Response Message When the eNodeB receives the preamble, it prepares to send random access response within a window specified in the previous section. The eNodeB sends the random access response on PDSCH and corresponding capacity grant, that is, DCI, on PDCCH. The UE monitors the RA-RNTI on PDCCH and if correct RA-RNTI is detected the UE decodes the actual random access message from PDSCH based on the information given by the DCI. The random access response message contains information on the received preamble identity based on which the LTE Key Performance Indicator Optimization UE can detect if the random access response was for the preamble identity selected by it or not. If there is a match the UE decodes the rest of the random access response, otherwise the random access procedure is considered failure and UE starts the random access procedure from the beginning but with higher power (incrementing PREAMBLE_TRANSMISSION COUNTER). The random access response contains initial timing advance that is calculated by the eNodeB based on the received preamble. The eNodeB allocates the temporary cell-radio network temporary identifier (C-RNTI) and the uplink grant for message 3 transmission (and possible retransmissions) and includes those in the random access response message. Also the UE transmission power level for message 3 given as power increase compared to the last transmitted (by the UE) preamble transmission power is given to the UEs within the random access response message. In case the UE does not receive any response (as random access response) to the sent preamble with selected RA-RNTI or the preamble identity decoded from random access response does not match the one selected by the UE, the UE assumes that the eNodeB did not hear the preamble and increases the preamble transmission power (incrementing PREAMBLE TRANSMISSION_COUNTER). This can also happen in case the problem is in downlink direction (th