Ring overlay network dedicated to carry broadcast traffic to DSLAMs
First Claim
1. A system comprising:
- a first network that is a broadcast overlay network comprising a ring topology, wherein the broadcast overlay network is associated with a service provider and dedicated to carrying broadcast traffic of a plurality of channels from a head-end network to egress add-drop multiplexers;
a digital subscriber line access multiplexer (DSLAM) having a line interfaced-and a network interface, and coupled to a particular egress add-drop multiplexer of the broadcast overlay network, wherein the particular egress add-drop multiplexer is a routing device for the plurality of channels for the digital subscriber line multiplexer, wherein the digital subscriber line access multiplexer functions as a routing point that receives a request for a particular video channel from a customer premise via the line interface and delivers the particular video channel, acquired from the particular egress add-drop multiplexer, via the network interface to the line interface without propagation of the request to other routing devices;
a second network coupled to the digital subscriber line access multiplexer to accommodate unicast traffic to and from the customer premise and a computer network, wherein the second network is associated with the service provider; and
a third network coupled to the digital subscriber line access multiplexer to accommodate unicast traffic to and from the customer premise and the head-end network, wherein the third network is associated with the service provider.
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Accused Products
Abstract
A system includes a broadcast overlay network including a ring topology. The ring topology includes a first network ring and a second network ring that is coupled to the first network ring via at least one cross-connect element. The ring topology is adapted to carry broadcast traffic from a network. The system also includes a digital subscriber line access multiplexer (DSLAM) having a line interface and a network interface. The network interface is in communication with the broadcast overlay network via the second network ring. The DSLAM is adapted to receive a request for a particular video channel from a customer premise via the line interface and to deliver the particular video channel from the network interface to the line interface.
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Citations
20 Claims
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1. A system comprising:
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a first network that is a broadcast overlay network comprising a ring topology, wherein the broadcast overlay network is associated with a service provider and dedicated to carrying broadcast traffic of a plurality of channels from a head-end network to egress add-drop multiplexers; a digital subscriber line access multiplexer (DSLAM) having a line interfaced-and a network interface, and coupled to a particular egress add-drop multiplexer of the broadcast overlay network, wherein the particular egress add-drop multiplexer is a routing device for the plurality of channels for the digital subscriber line multiplexer, wherein the digital subscriber line access multiplexer functions as a routing point that receives a request for a particular video channel from a customer premise via the line interface and delivers the particular video channel, acquired from the particular egress add-drop multiplexer, via the network interface to the line interface without propagation of the request to other routing devices; a second network coupled to the digital subscriber line access multiplexer to accommodate unicast traffic to and from the customer premise and a computer network, wherein the second network is associated with the service provider; and a third network coupled to the digital subscriber line access multiplexer to accommodate unicast traffic to and from the customer premise and the head-end network, wherein the third network is associated with the service provider. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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receiving, via a line interface of a digital subscriber line access multiplexer, a request for a particular video channel from a customer premise equipment, wherein a particular egress add-drop multiplexer of a first network that is a broadcast overlay network that carries a plurality of channels from a video head-end to a plurality of egress add-drop multiplexers is a routing device for the digital subscriber line access multiplexer; receiving particular media content associated with the particular video channel from the particular egress add-drop multiplexer at the digital subscriber line access multiplexer without propagation of the request to other routing devices; sending the particular media content associated with the particular video channel received at the digital subscriber line access multiplexer to the customer premise equipment via the line interface; transmitting unicast traffic between the customer premise equipment and a computer network via the digital subscriber line access multiplexer and a second network associated with a service provider; and transmitting unicast traffic between the customer premise equipment and the video head- end via the digital subscriber line access multiplexer and a third network associated with the service provider. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification