Power fluctuation detection and analysis

• US 9,143,379 B1
• Filed: 05/10/2012
• Issued: 09/22/2015
• Est. Priority Date: 05/01/2012
• Status: Active Grant

• Current Assignee: Time Warner Cable Enterprises LLC (Charter Communications Incorporated)
• Original Assignee: Time Warner Cable Enterprises LLC (Charter Communications Incorporated)
• Inventors: Berger, Will, Dempsey, Noel, Wynkoop, Mark, Wyman, Mark
• Primary Examiner(s): Chan, Wing F
• Assistant Examiner(s): MUNDUR, PADMAVATHI V
• Application Number:
  US13/468,564
• Time in Patent Office: 1,230 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 41/06 Management of faults, events, alarms or notifications
• CPC Class Codes: H04L 41/0654 using network fault recovery ring fault isolation or reconfiguration in loop networks without recovery actions by a network management system H04L12/437
• CPC Class Codes: H04L 43/045 for graphical visualisation of monitoring data
• CPC Class Codes: H04L 43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• CPC Class Codes: H04L 69/00 Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass networks security protocols H04L9/40; wireless communication networks H04W
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06
• CPC Class Codes: H04N 17/00 Diagnosis, testing or measuring for television systems or their details
• CPC Class Codes: H04N 7/00 Television systems details H04N3/00, H04N5/00; methods or arrangements, for coding, decoding, compressing or decompressing digital video signals H04N19/00; selective content distribution H04N21/00

Abstract

The network monitoring system collects transmission and/or receive power level information from a plurality of customer premise devices connected to the same distribution node for each of a plurality of network distribution nodes. For an individual network distribution node, the network monitoring system calculates a set of fluctuation parameters including a group power level deviation metric, e.g., a modified standard deviation ratio. The network monitoring system evaluates the generated fluctuation parameters and responds, e.g., outputting a fluctuations report, modifying a data collection profile being used by a set of customer premise devices corresponding to a distribution node, commanding diagnostics to be performed on a portion of the network and/or directing a service technician. The network monitoring system compares generated fluctuation parameters corresponding to different distribution nodes, and uses the results of the comparison to assign priority with regard to the assignment of limited available troubleshooting and repair resources.

Claims

1. A method of monitoring a communications system comprising:

operating a monitoring device including a processor and memory to perform the steps of;

collecting at least one of transmission power level information or received power level information from a first plurality of customer premise devices corresponding to a first network area;

collecting at least one of transmission power level information or received power level information from a second plurality of customer premise devices corresponding to a second area;

generating a measure of network instability for the first network area based on power level fluctuation information included in collected power level information received from said first plurality of customer premise devices;

generating a second group power level deviation metric from collected power level information received from said second plurality of customer premise devices, said second group power level deviation metric being a modified standard deviation ratio; and

taking an action based on the measure of network instability.

2. The method of claim 1, wherein taking action includes:

generating a fluctuation information report based on the measure of network stability for the first network area; and

performing at least one of;

i) outputting said generated fluctuation information report to an output device;

or

ii) storing said generated fluctuation information report on a storage device.

3. The method of claim 1, wherein taking an action includes:

dispatching a service technician to service equipment used to communicate signals to or from said first plurality of customer premise devices.

4. The method of claim 1, wherein taking an action includes:

at least one of;

i) triggering a network diagnostic operation for at least a portion of a network used to transmit to or receive signals from the first plurality of customer premise devices;

ii) changing the rate at which power level information is collected;

or iii) changing a number of power measurements taken during a portion of a day.

5. The method of claim 1, wherein said first plurality of customer premise devices are connected to a first distribution node, the method further comprising:

determining from the collected power level information a number of customer premise devices connected to the first distribution node having detected transmit or receive power level fluctuations over a first threshold.

6. The method of claim 5, further comprising:

determining from the collected power level information a number of customer premise devices connected to the first distribution node having detected transmit or receive power level fluctuations over a second threshold.

7. The method of claim 6, further comprising:

determining a number of fluctuating customer premise devices connected to the first distribution node, the number of fluctuating devices being a count of the number of devices which had transmit or receive power level fluctuation over said first threshold during a period of time.

8. The method of claim 7, further comprising:

determining a percentage of customer premise devices connected to said first distribution node which are fluctuating devices.

9. The method of claim 7, further comprising:

determining a number of fluctuating accounts corresponding to the first distribution node, the number of fluctuating accounts corresponding to the first distribution node being the number of accounts having customer premise devices connected to the first distribution node with detected fluctuations during said period of time.

10. The method of claim 9, further comprising:

determining a percentage of accounts connected to said first distribution node which are fluctuating accounts.

11. A method of monitoring a communications system comprising:

operating a monitoring device including a processor and memory to perform the steps of;

collecting at least one of transmission power level information or received power level information from a first plurality of customer premise devices corresponding to a first network area, said first plurality of customer premise devices being connected to a first distribution node;

determining a number of fluctuating customer premise devices connected to the first distribution node, the number of fluctuating devices being a count of the number of devices which had transmit or receive power level fluctuation over a first threshold during a period of time;

generating a first group power level deviation metric from collected power level information received from said first plurality of customer premise devices;

taking an action based on the generated first group power level deviation metric; and

wherein taking an action based on the generated first group power level deviation metric includes generating a report for a period of time, said report including, the number of fluctuating customer premise devices corresponding to the first distribution node, a number of fluctuating accounts corresponding to the first distribution node, a modified standard deviation ratio corresponding to the first distribution node, a number of critical violations corresponding to the first distribution node, a number of warning violations corresponding to the first distribution node, a percentage of accounts corresponding to the first distribution node that are fluctuating accounts, and a percentage of customer premise devices corresponding to the first distribution node that are fluctuating devices.

12. A monitoring apparatus for use in a communications network, the monitoring system comprising:

a memory; and

a processor, configured to;

collect at least one of transmission power level information or received power level information from a first plurality of customer premise devices corresponding to a first network area;

collect at least one of transmission power level information or received power level information from a second plurality of customer premise devices corresponding to a second area;

generate a measure of network instability for the first network area based on power level fluctuation information included in collected power level information received from said first plurality of customer premise devices;

generate a second group power level deviation metric from collected power level information received from said second plurality of customer premise devices, said second group power level deviation metric being a modified standard deviation ratio; and

take an action based on the measure of network instability for the first network area.

13. The monitoring apparatus of claim 12 wherein said processor is further configured to:

generate a fluctuation information report based on said measure of network instability for the first network area; and

perform at least one of;

i) outputting said generated fluctuation information report to an output device;

or

ii) storing said generated fluctuation information report on a storage device.

14. The monitoring apparatus of claim 12, wherein the processor is further configured to automatically dispatch a service technician to service equipment used to communicate signals to or from said first plurality of customer premise devices.

15. The monitoring apparatus of claim 12, wherein the processor is configured, as part of taking an action, to:

perform at least one of;

i) triggering a network diagnostic operation for at least a portion of a network used to transmit to or receive signals from the first plurality of customer premise devices or ii) changing the rate at which power level information is collected;

or iii) changing a number of power measurements taken during a portion of a day.

16. The monitoring apparatus of claim 12, wherein said first plurality of customer premise devices are connected to a first distribution node, the processor being further configured to:

determine from the collected power level information a number of customer premise devices connected to the first distribution node having detected transmit or receive power level fluctuations over a first threshold.

17. The monitoring apparatus of claim 16, wherein said first plurality of customer premise devices are connected to the first distribution node, the processor being further configured to:

determine from the collected power level information a number of customer premise devices connected to the first distribution node having detected transmit or receive power level fluctuations over a second threshold; and

determine a number of fluctuating customer premise devices connected to the first distribution node, the number of fluctuating devices being a count of the number of devices which had transmit or receive power level fluctuation over said first threshold during a period of time.

18. A non-transitory computer readable medium comprising:

computer executable instructions which when executed by a computer cause said computer to control a network monitoring apparatus to;

collect at least one of transmission power level information or received power level information from a first plurality of customer premise devices corresponding to a first network area;

collect at least one of transmission power level information or received power level information from a second plurality of customer premise devices corresponding to a second area;

generate a measure of network instability for the first network area based on power level fluctuation information included in collected power level information received from said first plurality of customer premise devices;

generate a second group power level deviation metric from collected power level information received from said second plurality of customer premise devices, said second group power level deviation metric being a modified standard deviation ratio; and

take an action based on the measure of network instability for the first network area.

19. The non-transitory computer readable medium of claim 18, wherein said computer readable medium further includes instructions which when executed by said computer cause said computer to control said network monitoring apparatus to:

generate a fluctuation information report based on said measure of network instability for the first network area; and

perform at least one of;

i) outputting said generated fluctuation information report to an output device;

or

ii) storing said generated fluctuation information report on a storage device.

20. The non-transitory computer readable medium of claim 18, wherein said computer readable medium further includes instructions which when executed by said computer cause said computer to control said network monitoring apparatus to:

automatically dispatch, without the input of a human user of said network monitoring system, a service technician to service equipment used to communicate signals to or from said first plurality of customer premise devices.