IP Library Granted Patent US 8,270,419
Granted Patent B2
US 8,270,419 · App. 12/576,958 · Granted Sep 18, 2012

Enhanced fiber nodes with CMTS capability

Assignee: Juniper Networks, Inc.
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Quick Facts
Patent No.
US 8,270,419
App. No.
12/576,958
Granted
Sep 18, 2012
Kind
B2
Abstract

A fiber node may include a cable modem termination system (CMTS) that includes a first receiver to receive first signals from a plurality of cable modems over a plurality of upstream channels, and extract data from the first signals; a second receiver to receive second signals, the second signals being in a different format than the first signals; and a processor, connected to the first receiver and the second receiver, to receive the extracted data from the first receiver, receive the second signals from the second receiver, compress the extracted data and the second signals, merge the extracted data and the second signals, and transmit, to an upstream facility, the merged extracted data and the second signals over a common network path.

Claims (54)

1. A fiber node comprising:

a cable modem termination system (CMTS) comprising:

a first receiver to:

receive first signals from a plurality of cable modems over a plurality of upstream channels, and

extract data from the first signals,

a second receiver to receive second signals, the second signals being in a different format than the first signals, the second signals including legacy analog signals,

a processor, connected to the first receiver and the second receiver, to:

receive the extracted data from the first receiver,

receive the second signals from the second receiver,

digitize the second signals;

compress the extracted data and the digitized second signals,

merge the compressed extracted data and the compressed digitized second signals to form a merged data stream, and

transmit, to an upstream facility, the merged data stream over a common network path.

2. The fiber node of claim 1 , the CMTS further comprising:

a transmitter to transmit data to the plurality of cable modems as downstream signals over a plurality of downstream channels.

3. The fiber node of claim 2 , where the receiver includes a plurality of demodulators, each of the demodulators corresponding to one of the plurality of upstream channels and where the transmitter includes a plurality of modulators, each of the modulators corresponding to one of the plurality of downstream channels.

4. The fiber node of claim 2 , where the CMTS is to determine that there is a problem associated with one of the upstream channels or one of the downstream channels.

5. The fiber node of claim 4 , where the CMTS is further to scan a spectrum associated with the one upstream channel or the one downstream channel in real time to identify a part of the spectrum that is free of the problem.

6. The fiber node of claim 4 , where the CMTS is further to resize the one upstream channel or the one downstream channel based on determining the problem.

7. The fiber node of claim 4 , where the CMTS is further to dynamically increase or decrease bandwidth associated with the one upstream channel or the one downstream channel based on determining the problem.

8. The fiber node of claim 4 , where the CMTS is further to move the one upstream channel or the one downstream channel to a new frequency based on determining the problem.

9. The fiber node of claim 4 , where the CMTS is further to allocate an additional upstream channel or an additional downstream channel based on determining the problem.

10. A fiber node comprising:

a cable modem termination system (CMTS) to:

receive first signals from a plurality of cable modems over a plurality of upstream channels,

extract data from the first signals,

receive second signals, the second signals being in a different format than the first signals, the second signals including legacy analog signals,

digitize the second signals;

compress the extracted data and the digitized second signals,

merge the compressed extracted data and the compressed digitized second signals to form a merged data stream, and

transmit, to an upstream facility, the merged data stream over a common network path.

11. The fiber node of claim 10 , where the CMTS includes a plurality of modulators and a plurality of demodulators, each of the plurality of demodulators corresponding to one of the upstream channels.

12. The fiber node of claim 10 , where the CMTS is further to communicate with the upstream facility via a packet network.

13. The fiber node of claim 10 , where the CMTS is further to send data associated with one of the upstream channels to the upstream facility without extracting the data associated with the one upstream channel.

14. The fiber node of claim 10 , where the CMTS is further to determine that there is a problem associated with one of the upstream channels.

15. The fiber node of claim 14 , where the CMTS is further to scan a spectrum associated with the one of the upstream channels in real time to identify a part of the spectrum that is free of the problem.

16. The fiber node of claim 14 , where the CMTS is further to dynamically increase or decrease bandwidth associated with the one of the upstream channels based on determining the problem.

17. The fiber node of claim 14 , where the CMTS is further to at least one of:

move the one of the upstream channels to a new frequency based on determining the problem or allocate an additional upstream channel based on determining the problem.

18. The fiber node of claim 14 , where the CMTS is further to move one or more of the cable modems associated with the one of the upstream channels to another one of the upstream channels without registering the moved one or more cable modems based on determining the problem.

19. A hybrid fiber-coax network comprising:

a plurality of fiber nodes connected between a plurality of cable modems and a cable system head end, at least one of the fiber nodes comprising:

a first receiver to:

receive first upstream signals from the plurality of cable modems over a plurality of upstream channels, and

extract data from the upstream signals,

a second receiver to receive second signals, the second signals being in a different format than the first signals, the second signals including legacy analog signals,

a processor, connected to the first receiver and the second receiver, to:

receive the extracted data from the first receiver,

receive the second signals from the second receiver,

digitize the second signals;

compress the extracted data and the digitized second signals,

merge the compressed extracted data and the compressed digitized second signals to form a merged data stream, and

transmit, to the cable system head end, the merged data stream over a common network path.

20. The hybrid fiber-coax network of claim 19 , where the the first receiver includes a plurality of demodulators, each of the demodulators corresponding to one of the upstream channels.

Continuity (6)
Continuation 11553882 · Oct 27, 2006
Continuation 10033378 · Oct 24, 2001
Continuation In Part 09715992 · Nov 16, 2000
Continuation In Part 09800397 · Mar 5, 2001
Provisional Application 60187194 · Mar 6, 2000
Related Publication 20100031305A1 · Feb 4, 2010