METHOD AND DEVICE FOR PROVIDING COMPATIBILITY WITH MPP IN WIRELESS POWER TRANSMISSION SYSTEM

The present specification (present disclosure) provides a method for receiving wireless power, performed by a wireless power receiver supporting a magnetic power profile (MPP), in a wireless power transmission system, and a device using same, the method comprising: transmitting a first identification (ID) packet to a wireless power transmitter on a first operating frequency, wherein the first ID packet includes information indicating the presence or absence of a first extended ID (XID) packet; transmitting the first XID packet to the wireless power transmitter on the first operating frequency, wherein the first XID packet includes information indicating that the first XID packet is a packet related to the MPP; and after transmission of the first XID packet, detecting whether the wireless power transmitter is operating on the first operating frequency or operating on a second operating frequency.