Power supply method, apparatus, and system

A power supply device, comprising:

• a computer;
• and
• a non-transitory computer readable storage medium storing instructions that, when executed by the computer, cause the computer to perform steps comprising:
• detecting a working state of a terminal in a home network, wherein the terminal accesses the home network through a coaxial cable;
• controlling power supply to an optical access equipment according to the working state, wherein the optical access equipment is arranged to implement access of a passive optical fiber network to the home network;
• and
• separating a Radio Frequency communication signal from a voltage signal for power supply to the optical access equipment and/or the terminal by high-pass filtering, wherein the Radio Frequency communication signal is a data communication signal for the optical access equipment and the terminal;
• wherein the power supply device is capable of providing forward power supply to the terminal and providing reverse power supply to the optical access equipment;
• wherein the steps further comprise:
• when the working state indicates power-on of the terminal or registration of the terminal, starting reverse power supply to the optical access equipment;
• and
• when the working state indicates dormancy of the terminal or power-off of the terminal, terminating reverse power supply to the optical access equipment.

A power supply system, comprising optical access equipment and a home network terminal, and further comprising:

• a reverse power supply device, connected between the optical access equipment and the home network terminal and arranged to detect a working state of the home network terminal in a home network and control power supply to the optical access equipment according to the working state, wherein the home network terminal accesses the home network through a coaxial cable, and the optical access equipment is arranged to implement access of a passive optical fiber network to the home network;
• wherein the reverse power supply device separates a Radio Frequency communication signal from a voltage signal for power supply to the optical access equipment and/or the home network terminal by high-pass filtering, wherein the Radio Frequency communication signal is a data communication signal for the optical access equipment and the home network terminal;
• wherein the reverse power supply device is capable of providing forward power supply to the home network terminal and providing reverse power supply to the optical access equipment;
• wherein when the working state indicates power-on of the home network terminal or registration of the home network terminal, the reverse power supply device starts reverse power supply to the optical access equipment;
• and
• when the working state indicates dormancy of the home network terminal or power-off of the home network terminal, the reverse power supply device terminates reverse power supply to the optical access equipment.