METHOD AND DEVICE RELATING TO TIME REQUIREMENT FOR APPLICATION MESSAGE IN WIRELESS POWER TRANSMISSION SYSTEM

The present disclosure relates to a method for transmitting a response message in a wireless power transmission system, the method being performed by a data stream responder, wherein the data stream responder enters a power transfer phase related to transferring or receiving wireless power, and transmits a response message to a data stream initiator in the power transfer phase. The response message is transmitted within a first time out period. A value of the first time out period is configured on the basis of an ADT packet of 1 byte, a time interval related to a DSR packet, and a communication error.