Method and apparatus for transmitting signal on basis of contention-based non-orthogonal multiple access scheme

A User Equipment (UE) for transmitting a signal based on a contention-based Non-Orthogonal Multiple Access (NOMA) scheme in a wireless communication system, the UE comprising:

• a receiving module configured to receive a signal;
• a transmitting module configured to transmit a signal;
• and
• a processor configured to control the receiving module and the transmitting module,
• wherein the processor is configured to:
• receive allocation of a resource pool for transmitting signals based on the contention-based NOMA scheme;
• and
• transmit data and a UE ID in the resource pool based on the contention-based NOMA scheme using the transmitting module,
• wherein there are a plurality of UE ID regions in the resource pool, and
• wherein the UE ID is allocated to a first region, which is one of the plurality of UE ID regions, and then transmitted.