METHOD AND APPARATUS FOR NFC COMMUNICATION AND DETECTION DURING CHARGING IN WIRELESS POWER TRANSMISSION SYSTEM

The present disclosure provides a method for transferring wireless power, performed by a wireless power transmitter in a wireless power transmission system, and an apparatus using same, the method being characterized by: entering a power transfer phase related to transferring the wireless power; and receiving a first near field communication (NFC) signal from a wireless power receiver on a slot during the power transfer phase, wherein the slot is a duration in which a power signal has decreased or a duration in which an operation frequency has increased.