Apparatus and Method for Transmitting/Receiving Power Transmitting Unit Presence Information in Wireless Charging Network

A method for transmitting power transmitting unit (PTU) presence information in a wireless charging network, the method comprising:

• receiving an advertisement message from a power receiving unit (PRU);
• determining whether a current state is a state that power is not supplied to a resonator;
• determining whether a received signal strength of the advertisement message received from the PRU is greater than or equal to a threshold received signal strength if the current state is the state that the power is supplied to the resonator;
• and
• outputting PTU presence information indicating that a PTU exists if the received signal strength of the advertisement message received from the PRU is greater than or equal to the threshold received signal strength.

A method for receiving power transmitting unit (PTU) presence information in a wireless charging network, the method comprising:

• transmitting an advertisement message to a PTU;
• and
• receiving PTU presence information from a management server,
• wherein the PTU presence information is transmitted to the management server if a state of the PTU is a state that power is supplied to a resonator when the PTU corresponding to the PTU presence information receives the advertisement message from a power receiving unit (PRU).

A method for receiving power transmitting unit (PTU) presence information in a wireless charging network, the method comprising:

• transmitting an advertisement message to a PTU;
• and
• receiving PTU presence information from a management server,
• wherein the PTU presence information is transmitted to the management server if a state of the PTU is a state that power is supplied to a resonator and received signal strength which is received in the PTU is less than threshold received signal strength when the PTU corresponding to the PTU presence information receives the advertisement message from a power receiving unit (PRU).

A method for transmitting/receiving power transmitting unit (PTU) presence information in a wireless charging network, the method comprising:

• receiving PTU presence information from a PTU;
• and
• transmitting the PTU presence information to a power receiving unit (PRU),
• wherein the PTU presence information is transmitted to a management server if a state of the PTU is a state that power is supplied to a resonator when the PTU corresponding to the PTU presence information receives an advertisement message from the PRU.

A method for transmitting/receiving power transmitting unit (PTU) presence information in a wireless charging network, the method comprising:

• receiving PTU presence information from a PTU;
• and
• transmitting the PTU presence information to a power receiving unit (PRU),
• wherein the PTU presence information is transmitted to a management server if a state of the PTU is a state that power is supplied to a resonator and received signal strength of an advertisement message which the PTU receives is less than threshold received signal strength when the PTU corresponding to the PTU presence information receives the advertisement message from the PRU.

A power receiving unit (PRU) in a wireless charging network, the PRU comprising:

• a transmitter configured to perform an operation of transmitting an advertisement message to a power transmitting unit (PTU);
• and
• a receiver configured to perform an operation of receiving PTU presence information from a management server,
• wherein the PTU presence information is transmitted to the management server if a state of the PTU is a state that power is supplied to a resonator when the PTU corresponding to the PTU presence information receives the advertisement message from the PRU.

A power receiving unit (PRU) in a wireless charging network, the PRU comprising:

• a transmitter configured to perform an operation of transmitting an advertisement message to a power transmitting unit (PTU);
• and
• a receiver configured to perform an operation of receiving PTU presence information from a management server,
• wherein the PTU presence information is transmitted to the management server if a state of the PTU is a state that power is supplied to a resonator and received signal strength which is received in the PTU is less than threshold received signal strength when the PTU corresponding to the PTU presence information receives the advertisement message from the PRU.

A management server in a wireless charging network, the management server comprising:

• a receiver configured to perform an operation of receiving power transmitting unit (PTU) presence information from a PTU;
• and
• a transmitter configured to perform an operation of transmitting the PTU presence information to a power receiving unit (PRU),
• wherein the PTU presence information is transmitted to a management server if a state of the PTU is a state that power is supplied to a resonator when the PTU corresponding to the PTU presence information receives an advertisement message from the PRU.

A management server in a wireless charging network, the management server comprising:

• a receiver configured to perform an operation of receiving power transmitting unit (PTU) presence information from a PTU;
• and
• a transmitter configured to perform an operation of transmitting the PTU presence information to a power receiving unit (PRU),
• wherein the PTU presence information is transmitted to a management server if a state of the PTU is a state that power is supplied to a resonator and received signal strength of an advertisement message which the PTU receives is less than threshold received signal strength when the PTU corresponding to the PTU presence information receives the advertisement message from the PRU.