Power providing equipment, mobile device, operating method of mobile device

A power providing equipment comprises,

• a wireless power transmitter configured for transmitting a wireless power signal to a mobile device;
• a communication receiver;
• and
• a processor electrically connected with the wireless power transmitter and the communication receiver, wherein the processor is configured for:
• determining whether a first end power transfer message from the mobile device is received, wherein the first end power transfer message indicates a power of a battery of the mobile device is full at a beginning of the wireless power transmitter transmitting the wireless power signal to the mobile device;
• controlling the wireless power transmitter to stop transmitting the wireless power signal to the mobile device under a condition that the first end power transfer message is received;
• receiving, through the communication receiver, a second end power transfer message from the mobile device under a condition that the battery is fully charged by utilizing the wireless power signal transmitted from the wireless power transmitter;
• and
• controlling the wireless power transmitter to stop the power signal corresponding to the second end power transfer message;
• wherein the first end power transfer message and the second end power transfer message are different.

An operating method of a mobile device, the operating method comprising:

• receiving a power signal from a power providing equipment;
• transmit a first end power transfer message to the power providing equipment under a condition that the power of the battery is full at a beginning of receiving the wireless power signal from the power providing equipment, so that the power providing equipment stops providing the wireless power signal according to the first end power transfer message;
• charging the battery by utilizing the wireless power signal received from the power providing equipment under a condition that the power of the battery is not full;
• and
• transmitting a second end power transfer message to the power providing equipment under a condition that the battery is fully charged by the charging module, so that the power providing equipment stops providing the wireless power signal according to the second end power transfer message;
• wherein the first end power transfer message and the second end power transfer message are different.