Electronic device and method for transmission of reason wireless charging is stopping

A method performed by an electronic device, the method comprising:

• performing wireless charging by receiving power wirelessly from an external electronic device through a power reception circuit;
• alternatingly transmitting, to the external electronic device during the wireless charging, control error packet (CEP) data for controlling the power received from the external electronic device and received power packet (RPP) data for indicating the power received from the external electronic device;
• receiving data on one or more reasons to stop wireless charging from the external electronic device during the wireless charging;
• and
• a plurality of second values indicating different intervals of power loss caused by a foreign object between the external electronic device and the electronic device.

An electronic device comprising:

• a power transmission circuit;
• and
• a processor configured to:
• perform wireless power transfer by transmitting power wirelessly to an external electronic device through the power transmission circuit,
• alternatingly receive, from the external electronic device during the wireless power transfer, control error packet (CEP) data for controlling the power received by the external electronic device and received power packet (RPP) data for indicating the power received by the external electronic device,
• detect a reason to stop wireless charging during the wireless power transfer,
• transmit data on the reason to stop wireless charging to the external electronic device, and
• a plurality of second values indicating different intervals of power loss caused by a foreign object between the external electronic device and the electronic device.