Dynamic ingress arrester

• US 20070288982A1
• Filed: 06/13/2006
• Published: 12/13/2007
• Est. Priority Date: 06/13/2006
• Status: Abandoned Application

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Comcast Cable Holdings LLC (Comcast Corporation)
• Inventors: Donahue, John
• Application Number:
  US11/452,151
• Publication Number:
  US 20070288982A1
• Time in Patent Office: Days
• US Class Current: 725/125
• CPC Class Codes: H04H 20/12 Arrangements for observation, testing or troubleshooting
• CPC Class Codes: H04H 60/97 using uplink of the CATV systems
• CPC Class Codes: H04L 12/2801 Broadband local area networks
• CPC Class Codes: H04N 21/44245 Monitoring the upstream path of the transmission network, e.g. its availability, bandwidth
• CPC Class Codes: H04N 7/102 Circuits therefor, e.g. noise reducers, equalisers, amplifiers H04N7/108 takes precedence
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications

Abstract

A method, system, and apparatus for combating ingress influences on network communications. The method, system, and apparatus may be suitable for use in any number of network environments and for identifying, minimizing, or otherwise ameliorating the influence of ingress on network communications.

Claims

1. A method of limiting ingress in a networking system having a number of distributions legs used to support upstream communications for a number of network devices, the method comprising:

determining an output level for an upstream signal carried over a distribution leg; and

attenuating the upstream signal if the determined output level is greater than an output level threshold so as to limit ingress.

2. The method of claim 1 further comprising determining the output level of the upstream signal with a dynamic ingress arrester (DIA) connected thereto.

3. The method of claim 2 further comprising inducing the attenuation with the DIA.

4. The method of claim 1 further comprising funneling separate upstream signals received from a plurality of distribution legs into a common distribution leg so as to facilitate further upstream communications of the signals and inducing the attenuation at locations downstream of a funnel used to funnel the signals so as to limit ingress transmission to locations upstream of the funnel.

5. The method of claim 4 further comprising associating different output power level thresholds for two or more of the distribution legs and only inducing attenuation if the output level of the distribution leg is greater than the associated output level threshold.

6. The method of claim 1 further comprising instructing the network devices to increase output levels in response to determining noise in the upstream signal emanating therefrom and inducing the attenuation if the output level of the upstream signal is increased above the output level threshold.

7. The method of claim 5 further comprising instructing the network devices to increase the output level of the upstream signal with signals communicated from a cable modem termination system (CMTS).

8. The method of claim 1 further comprising generating one or more alarms in response to the output levels being greater than the output level threshold.

9. The method of claim 7 further comprising associating identifiers within the alarms so as to facilitate identifying the distribution legs having output levels above the output level threshold.

10. The method of claim 1 further comprising inducing attenuation in proportion to a difference of the output level relative to the output level threshold.

11. The method of claim 1 further comprising determining the output level for signals carried within a define frequency spectrum of the distribution legs and attenuating the signal as a function thereof.

12. The method of claim 1 further comprising determining the output level for specific signals carried within the distribution leg and attenuating the signal as function thereof.

13. The method of claim 1 further comprising attenuating all signals carried within the distribution leg.

14. The method of claim 1 further comprising attenuating a selected portion of the signals carried within the distribution leg.

15. A networking system comprising:

a number of network devices;

a number of distributions legs to support upstream communications for the network devices; and

a dynamic ingress arresters (DIAs) associated with one or more of the distribution legs, the DIAs configured for inducing attenuation to the upstream signals if output levels of the associated distribution leg are greater than an output level threshold.

16. The system of claim 15 further comprising a funnel configured to combine the separate upstream signals from the distribution legs into a common distribution leg so as to facilitate further upstream communications of the same, and wherein the DIAs are located downstream of the funnel so as to limit ingress transmission to locations upstream of the funnel.

17. The system of claim 15 further comprising a device configured for instructing the network devices to increase output levels in response to determining noise in the signals emanating therefrom, wherein the DIAs induce attenuation to the signals associated with the network device instructed to increase output levels if the corresponding output levels are greater than the output level threshold.

18. The system of claim 17 wherein the device is a cable modem termination system (CMTS).

19. The system of claim 15 wherein the DIAs are configured for generating an alarm if the output levels are greater than the output level threshold.

20. The system of claim 19 wherein the alarm includes identifiers so as to facilitate identifying the distribution legs having output levels above the output level threshold.

21. The system of claim 15 wherein the DIAs are configured for inducing attenuation in proportion to a difference of the output level relative to the output level threshold.

22. The system of claim 15 wherein different output power level thresholds are associated with two or more of the distribution legs and the DIAs associated therewith only induce attenuation if the output level of the distribution leg is greater than the associated output level threshold.

23. A dynamic ingress arrester (DIA) configured for:

determining output levels of signals carried over a distribution leg; and

inducing attenuation to the signals if the output level is greater than an output level threshold.

24. The DIA of claim 23 further configured for generating an alarm if output level is greater than the output level threshold.

25. The DIA of claim 24 further configured for including identifiers in the alarm so as to facilitate identifying the distribution leg having output levels above the output level threshold.

26. The DIA of claim 23 further configured for inducing attenuation in proportion to a difference of the output level relative to the output level threshold.

27. The DIA of claim 23 further configured for inducing attenuation to a specific portion of the distribution leg.

28. The DIA of claim 23 further configured for inducing attenuation to specific signals carried within the distribution leg.

29. A method of identifying sources of ingress in a networking system having a number of distributions legs used to support upstream communications for a number of network devices, the method comprising:

determining output levels for the upstream signals carried over the distribution legs; and

identifying ingress associated with one of the distribution legs as a function of whether the output level of the distribution legs exceed an output level threshold.

30. The method of claim 29 further comprising identifying the ingress with a dynamic ingress arrester (DIA).

31. The method of claim 29 further comprising associating different output level thresholds with different distribution legs and identifying ingress as a function of the different output level thresholds.

32. The method of claim 29 further comprising associating multiple output level thresholds to at least one of the distribution legs and identifying ingress as a function thereof.