Method for transmitting or receiving signal in wireless communication system and apparatus therefor

A method of transmitting a downlink signal by a base station in a wireless communication system, the method comprising:

• transmitting, to a user equipment (UE), information on a reference point of a system band and an operating band of the UE corresponding to a part of the system band;
• determining a reference signal sequence for the operating band of the UE with respect to the reference point of the system band;
• and
• transmitting the downlink signal in the operating band of the UE based on the determined reference signal sequence,
• wherein the information on the operating band of the UE comprises an offset between the operating band of the UE and the reference point of the system band.

A user equipment (UE) for receiving a downlink signal in a wireless communication system, the UE comprising:

• a receiver;
• and
• a processor configured to:
• receive information on a reference point of a system band and an operating band of the UE corresponding to a part of the system band from a base station through the receiver;
• determine a reference signal sequence for the operating band of the UE with respect to the reference point of the system band;
• and
• receive the downlink signal in the operating band of the UE based on the determined reference signal sequence through the receiver,
• wherein the information on the operating band of the UE comprises an offset between the operating band of the UE and the reference point of the system band.