Home gateway system for providing optical communication packet data interface function and home broadcast service providing method using the same
First Claim
1. A home gateway system providing an optical communication packet data interface function, the system comprising:
- an optical coupler for dividing an optical signal received from an access network into an IP (Internet protocol) network'"'"'s packet data signal and a broadcast network'"'"'s broadcast stream signal;
an ONU (optical network unit) module for packetizing the IP network'"'"'s packet data signal;
a broadcast packet/IP muticast packet module for converting the broadcast network'"'"'s broadcast stream signal into an IP multicast packet;
an Ethernet switch for processing the IP network'"'"'s IP multicast packet and the IP multicast packet into which the broadcast stream is converted according to a L2 multicast MAC (medium access channel) table to then transmit the processed packets to a destination port, and transmitting an unicast packet from the IP network to a control processor; and
the control processor for controlling and managing the unicast packet and the L2 multicast MAC table.
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Accused Products
Abstract
There are provided a home gateway system providing an optical communication packet data interface function and a home broadcast service providing method using the same. The home gateway system is constructed to include a network processor having two Ethernet interfaces connected to a system control processor of a home gateway and an Ethernet switch having an Ethernet multicast traffic processing/IGMP snooping function based on an Ethernet L2 multicast MAC table to thereby simultaneously provide a broadcast service such as a CATV broadcast service, and an Internet data service to a plurality of hosts in a home. In case of a broadcast service, the home gateway system converts a broadcast stream into an IP multicast packet and then processes the broadcast IP multicast packet by an L2 multicast function of an Ethernet switch, thereby making it possible to directly transmit the broadcast IP multicast packet to a host without the help of the control processor.
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Citations
12 Claims
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1. A home gateway system providing an optical communication packet data interface function, the system comprising:
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an optical coupler for dividing an optical signal received from an access network into an IP (Internet protocol) network'"'"'s packet data signal and a broadcast network'"'"'s broadcast stream signal;
an ONU (optical network unit) module for packetizing the IP network'"'"'s packet data signal;
a broadcast packet/IP muticast packet module for converting the broadcast network'"'"'s broadcast stream signal into an IP multicast packet;
an Ethernet switch for processing the IP network'"'"'s IP multicast packet and the IP multicast packet into which the broadcast stream is converted according to a L2 multicast MAC (medium access channel) table to then transmit the processed packets to a destination port, and transmitting an unicast packet from the IP network to a control processor; and
the control processor for controlling and managing the unicast packet and the L2 multicast MAC table. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A home broadcast service providing method by using a home gateway system providing an optical communication packet data interface function, the method comprising the steps of:
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(a) dividing an optical signal received from an access network into an IP network'"'"'s packet data signal and a broadcast network'"'"'s broadcast stream signal;
(b) transmitting the IP network'"'"' packet data signal to an ONU module and packetizing the IP network'"'"' packet data signal, and then transmitting the packetized IP network'"'"' packet data signal to an Ethernet switch through an IP WAN port of a home gateway;
(c) transmitting the broadcast network'"'"'s broadcast stream signal to a broadcast packet/IP muticast packet module, converting the broadcast network'"'"'s broadcast stream signal into an IP multicast packet, and then transmitting the resulting IP multicast packet to the Ethernet switch;
(d) processing the IP network'"'"'s IP multicast packet and the IP multicast packet into which the broadcast stream signal is converted according to a L2 multicast MAC table to then transmit the processed packets to a destination port, and transmitting an unicast packet received from the IP network to a control processor through a CPU port of the Ethernet switch; and
(e) performing required functions of a control processor, including a NAT/PAT (network address translation/port address translation) function with respect to the unicast packet received from the Ethernet switch, and then retransmitting the resulting packet to the Ethernet switch to then transmit the retransmitted packet to a destination port. - View Dependent Claims (9, 10, 11, 12)
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Specification