Power line communication system using hybrid-fiber coaxial and communication device used in the system
First Claim
1. A power line communication (PLC) optical network unit of a hybrid fiber coaxial (HFC) communication system, the PLC optical network unit comprising:
- a first communication port unit connecting with a predetermined optical fiber, and receiving a predetermined optical Ethernet signal from a predetermined optical Ethernet device via the optical fiber;
a second communication port unit connecting with at least one coaxial cable;
a medium converter converting the received optical Ethernet signal into an Ethernet signal;
a PLC converter converting the Ethernet signal into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and
a transmission control unit controlling the PLC Ethernet signal to be transmitted to a subscriber location via the at least one coaxial cable that connects with the second communication port unit,wherein the PLC converter comprises;
a Media Access Control (MAC) address converter converting a MAC address of the Ethernet signal into a MAC address corresponding to the PLC protocol; and
a physical layer converter modulating the Ethernet signal into a PLC Ethernet signal that has a physical layer corresponding to the PLC protocol, the Ethernet signal including the converted MAC address.
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Accused Products
Abstract
A communication equipment which is utilized in a power line communication (PLC) system utilizing a hybrid fiber coax (HFC) which includes a PLC optical network unit, a PLC trunk bridge amplifier, a PLC distribution amplifier, and a PLC coupling device. In this instance, the PLC optical network unit does not require a PLC protocol conversion of an Ethernet signal by a cable modem and a PLC modem in each subscriber location, and enables a PLC communication between the each subscriber location and a communication terminal utilizing a PLC Ethernet signal as is, by receiving an optical signal from an optical transmitter via an optical fiber, converting the optical signal into the PLC Ethernet signal corresponding to a predetermined PLC protocol, and transmitting the PLC Ethernet signal to at least one subscriber location via a coaxial cable.
15 Citations
5 Claims
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1. A power line communication (PLC) optical network unit of a hybrid fiber coaxial (HFC) communication system, the PLC optical network unit comprising:
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a first communication port unit connecting with a predetermined optical fiber, and receiving a predetermined optical Ethernet signal from a predetermined optical Ethernet device via the optical fiber; a second communication port unit connecting with at least one coaxial cable; a medium converter converting the received optical Ethernet signal into an Ethernet signal; a PLC converter converting the Ethernet signal into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a transmission control unit controlling the PLC Ethernet signal to be transmitted to a subscriber location via the at least one coaxial cable that connects with the second communication port unit, wherein the PLC converter comprises; a Media Access Control (MAC) address converter converting a MAC address of the Ethernet signal into a MAC address corresponding to the PLC protocol; and a physical layer converter modulating the Ethernet signal into a PLC Ethernet signal that has a physical layer corresponding to the PLC protocol, the Ethernet signal including the converted MAC address. - View Dependent Claims (2, 3, 4)
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5. A PLC system using a hybrid fiber coaxial (HFC) comprising:
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an optical Ethernet device converting a first Ethernet signal, which is received from a predetermined IP network, into an optical Ethernet signal; an optical transmitter converting a CATV signal, which is received from a predetermined CATV system, into a CATV optical signal; an optical network unit converting the CATV optical signal, which is received from the optical transmitter via an optical fiber, into a CATV signal and converting the optical Ethernet signal, which is received from the optical Ethernet device, into a PLC Ethernet signal corresponding to a predetermined PLC protocol; and a PLC coupling device receiving the CATV signal or the PLC Ethernet signal from the optical network unit, and controlling the CATV signal to be transmitted to at least one display terminal which is installed in a subscriber location and controlling the PLC Ethernet signal to be transmitted to at least one communication terminal, which is installed in a subscriber location, via a power line, wherein the optical network unit comprises; a medium converter converting the received optical Ethernet signal into a second Ethernet signal; a Media Access Control (MAC) address converter converting a MAC address of the second Ethernet signal into a MAC address corresponding to the PLC protocol; and a physical layer converter modulating the second Ethernet signal into a PLC Ethernet signal that has a physical layer corresponding to the PLC protocol, the Ethernet signal including the converted MAC address.
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Specification