Method of transmitting and receiving signal to user equipment at base station supporting full duplex in wireless communication system

A method of transmitting and receiving a signal of a user equipment (UE) supporting full duplex to a base station in a wireless communication system, the method comprising:

• receiving, from the base station, a first resource element (RE) set including two REs, to which different precoders are applied;
• and
• transmitting, to the base station, a second RE set including two REs while the first RE set is transmitted,
• wherein code division multiplexing (CDM) codes are respectively applied to the first RE set transmitted from the base station to the UE in downlink and the second RE set transmitted from the UE to the base station in uplink.

A base station apparatus supporting full duplex in a wireless communication system, the base station apparatus comprising:

• a memory;
• and
• a processor connected to the memory,
• wherein the processor is configured to
• transmit a first resource element (RE) set including two REs to the UE based on different precoders to the two REs of the first RE set, and
• receive a second RE set including two REs from a plurality of UEs including the UE while the first RE set is transmitted based on different post-coders to the two REs of the second RE set,
• wherein code division multiplexing (CDM) codes are respectively applied to the first RE set transmitted from the base station to the UE in downlink and the second RE set transmitted from the UE to the base station in uplink.