Method and device for fast fsk communication in wireless power transmission system

A wireless power transmitter, comprising:

• a converter related to transferring wireless power to a wireless power receiver;
• and
• a communicator/controller related to controlling the transfer of the wireless power,
• wherein the wireless power transmitter:
• enters a power transfer phase related to transferring the wireless power;
• and
• transmit an auxiliary data transport (ADT) packet to the wireless power receiver in the power transfer phase,
• wherein the wireless power transmitter communicates with the wireless power receiver based on Frequency Shift Keying (FSK), and
• wherein a size of the ADT packet is selected based on a number of cycles make up FSK bit.

A method for receiving wireless power from a wireless power transmitter in a wireless power transfer system, the method performed by a wireless power receiver and comprising:

• entering a power transfer phase related to receiving the wireless power;
• and
• receiving an auxiliary data transport (ADT) packet from the wireless power transmitter in the power transfer phase,
• wherein the wireless power receiver communicates with the wireless power transmitter based on Frequency Shift Keying (FSK), and
• wherein a size of the ADT packet is selected based on a number of cycles make up FSK bit.