Interference cancellation method and base station apparatus therefor

A method of operating a base station for interference cancellation in a wireless communication system, the method comprising:

• receiving, from a target terminal, an uplink data signal comprising at least one interference signal generated by at least one interference terminal;
• performing primary decoding for the uplink data signal;
• generating a cancelling signal corresponding to an interference signal of the at least one interference terminal, according to decoding errors;
• performing a cancellation by applying the cancelling signal to the uplink data signal;
• and
• performing secondary decoding for the uplink data signal to which the cancelling signal has been applied.

A method of operating a scheduling apparatus for interference cancellation in a wireless communication system, the method comprising:

• receiving at least one piece of uplink resource allocation information for each terminal and information related to channel estimation from a plurality of base stations;
• identifying at least one candidate interference terminal for each base station using the uplink resource allocation information;
• and
• transmitting information on the at least one identified candidate interference terminal to a corresponding base station.

An apparatus of a base station for interference cancellation in a wireless communication system, the apparatus comprising:

• a transceiver;
• and
• at least one processor, operatively connected to the transceiver, configured to:
• receive, from a target terminal, an uplink data signal comprising at least one interference signal generated by at least one interference terminal,
• perform a primary decoding for the uplink data signal,
• generate a cancelling signal corresponding to the at least one interference signal of the at least one interference terminal, according to decoding errors,
• perform a cancellation by applying the cancelling signal to the uplink data signal, and
• perform a secondary decoding for the uplink data signal to which the cancelling signal has been applied.