Method and user equipment for performing random access procedure

A user equipment (UE) for performing a random access (RA) procedure in a wireless communication system, the user equipment comprising:

• a radio frequency (RF) unit, and
• a processor configured to control the (RF) unit, the processor configured to:
• control the RF unit to receive physical random access channel (PRACH) configuration information;
• determine a part of PRACH resources among PRACH resources configured based on the PRACH configuration information, if a RA procedure is triggered;
• and
• control the RF unit to perform the RA procedure using only the determined part of the PRACH resources,
• wherein the PRACH configuration information includes a periodicity value N, expressed in number of configured PRACH resources, and
• wherein the determined part of PRACH resources are every N-th configured PRACH resource, starting from a specific PRACH resource for the RA procedure, among the PRACH resources configured based on the PRACH configuration information.