Broadband digital access (BDA) architecture for extending digital broadband communications in an HFC network
AssigneeApplied Optoelectronics, Inc.
InventorsGeorge Goncalves, Rafael Celedon, Mark Siejka
Life of this patent
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Abstract
A broadband digital access (BDA) architecture includes a BDA hub device in a headend/hub and one or more BDA node modules in one or more HFC nodes to enable digital communications between the headend/hub and the HFC node(s) in a CATV/HFC network. The BDA hub device and the BDA node module(s) are connected by one or more downstream optical fibers and one or more upstream optical fibers to enable digital optical communications therebetween. The BDA hub device provides an analog RF interface with equipment in the headend/hub and the BDA node module provides an analog RF interface with subscriber locations via one or more coaxial cables.
Claims17
A broadband digital access (BDA) architecture for providing digital broadband communications between a headend/hub and at least one optical node coupled to the headend/hub with optical fibers in a hybrid fiber-coaxial (HFC) network, the BDA architecture comprising:
- a BDA hub device for use in the headend/hub, the BDA hub device being configured to convert at least one hub downstream analog radio frequency (RF) signal from the headend/hub to a downstream digital optical signal transmitted over a downstream optical fiber and configured to convert an upstream digital optical signal received from an upstream optical fiber to at least one hub upstream analog radio frequency (RF) signal for the headend/hub;
- and
- at least one BDA node module for use in the at least one optical node and configured to be coupled to the BDA hub device via the downstream optical fiber and the upstream optical fiber, the BDA node module being configured to convert the downstream digital optical signal received from the downstream optical fiber to at least one node downstream analog radio frequency (RF) signal transmitted over a plurality of coaxial cables and configured to convert a plurality of node upstream analog radio frequency (RF) signals received from respective ones of the plurality of coaxial cables to the upstream digital optical signal for transmission over the upstream optical fiber.
Dependencies are inferred from the claim text.