Random access method and signaling method for the same

A Node-B for performing a random access procedure with a specific user equipment (UE) within a cell in which a plurality of UEs are located together, the Node-B comprising:

• a radio frequency (RF) unit;
• and
• a processor,
• wherein the processor is configured to:
• transmit, via the RF unit, a random access procedure configuration including a basic sequence index related with a random access channel and zero correlation zone (ZCZ) configuration;
• and
• receive, via the RF unit, a random access preamble corresponding to the random access procedure configuration from the UE over the random access channel, wherein a length of a cyclic part and a length of a sequence part of the random access preamble are differently given based on the random access procedure configuration,
• wherein the random access preamble is generated from Constant Amplitude Zero Auto-Correlation (CAZAC) sequences based on the basic sequence index by applying a length of a cyclic shift according to the ZCZ configuration.