Multiple upstream split support in a fiber-deep HFC network
Systems and methods for achieving full duplex bidirectional transmission across coaxial cable in a hybrid fiber-coaxial cable TV network. Some preferred systems and method will attenuate reflections propagated within the coaxial cable. Other preferred systems may echo-cancel reflections propagated within the coaxial cable.
1. A method for delivering broadband service to a plurality of subscribers each within a common service group, the method comprising the steps of:
Delivering broadband service to a first one of the plurality of subscribers using a first coaxial length from an Optical Network Unit (ONU) associated with the first subscriber, and over a first temporal interval;
delivering broadband service to a second one of the plurality of subscribers using a second coaxial length from an ONU associated with the second subscriber, and over the first temporal interval; and
delivering at least one of Fiber-to-the-Last-Amplifier (FTTLA), Fiber-to-the-Curb (FTTC), and Fiber-to-the-Home (FTTH) to the first one of the plurality of subscribers over a second temporal interval subsequent to the first temporal interval by replacing at least a portion of the first coaxial length with a fiber optic connection; where
during the second temporal interval, the second one of the plurality of subscribers continues to be delivered broadband service over the second coaxial length via a coaxial connection from the ONU associated with the second subscriber; where
during the second temporal interval, the first one of the plurality of subscribers receives upstream service in a frequency range that overlaps with that of downstream service provided to the second one of the plurality of subscribers; and where the FTTH connection delivers Data over Cable Service Internet Specification (DOCSIS) 3.1 content and the coaxial connection delivers DOCSIS 3.0 content.
2. The method of claim 1 where the first one of the plurality of subscribers receives upstream service and downstream service at a first frequency split, and the second one of the plurality of subscribers receives upstream and downstream service at a second frequency split different than the first split.
3. The method of claim 2 where the ONU associated with the first subscriber is the same ONU associated with the second subscriber, and the first frequency split and the second frequency split are both configured at the ONU.
4. The method of claim 2 where the first and second subscribers receive broadband service from different ONUs and the first frequency split is configured at the ONU associated with the first subscriber and the second frequency split is configured at the ONU associated with the second subscriber.
5. A method for delivering Data over Cable Service Internet Specification (DOCSIS) content to a plurality of subscribers each within a common service group, the method comprising the steps of:
delivering content to a first one of the plurality of subscribers using a first coaxial length from an Optical Network Unit (ONU) associated with the first subscriber, and over a first temporal interval;
delivering content to a second one of the plurality of subscribers using a second coaxial length from an ONU associated with the second subscriber, and over the first temporal interval; and
delivering Fiber-to-the-Home (FTTH) service to the first one of the plurality of subscribers over a second temporal interval subsequent to the first temporal interval by replacing at least a portion of the first coaxial length with a fiber optic connection; where
during the second temporal interval, the second one of the plurality of subscribers continues to be delivered content over the second coaxial length from the ONU associated with the second subscriber via a coaxial connection, and the fiber optic connection delivers DOC SIS 3.1 content while the coaxial connection delivers DOC SIS 3.0 content.