Method or apparatus for processing performance data from a communications network

• US 20070071338A1
• Filed: 07/26/2006
• Published: 03/29/2007
• Est. Priority Date: 09/23/2005
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Banerjee, Swapnesh, Sen, Bibartan
• Application Number:
  US11/492,980
• Publication Number:
  US 20070071338A1
• Time in Patent Office: Days
• US Class Current: 382/240
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks

Abstract

A method and apparatus is disclosed for processing performance data from a communications network in which the performance data is converted from a time-series format into a time-frequency format and one or more frequency components removed prior to the data being utilised to monitor the network.

Claims

1. A method for processing performance data from a communications network comprising one or more network elements, the method comprising the steps of:

a) receiving network data from a network element;

b) converting said network data from a time-series format to a time-frequency format;

c) modifying said converted network data by removing a first set of frequency components to create a first set of modified data; and

d) applying an anomaly detection algorithm to said first set of modified data.

2. A method according to claim 1 in which said converting step is performed with a wavelet transform.

3. A method according to claim 1 in which said converting step is carried out with an Ordered Haar wavelet transform.

4. A method according to claim 2 in which said first set of frequency components are removed by reducing to zero one or more corresponding spectrum coefficients produced by said wavelet transform.

5. A method according to claim 1 comprising the further step of creating a second set of modified data from said network data by removing a second set of frequency components from said network data.

6. A method according to claim 5 in which said second set of frequencies is removed by reducing to zero one or more wavelet coefficients produced by said wavelet transform.

7. A method according to claim 5 in which said second set of modified data is transformed from said time-frequency format to said time-series format using an inverse wavelet transform.

12. A medium or media containing therein a program or group of programs arranged to enable a programmable device or a group of programmable devices to carry out the method of claim 1.

8. A method for processing performance data from a communications network comprising one or more network elements, the method comprising the steps of:

a) receiving network data from a network element;

b) converting said network data from a time-series format to a time-frequency format using a wavelet transform;

c) modifying said converted network data by removing a first set of frequency components to create a first set of modified data; and

d) reconverting said first set of modified data from said time-frequency format to said time-series format using an inverse wavelet transform.

9. A method according to claim 8 comprising the further step of creating a second set of modified data from said network data by removing a second set of frequency components from said network data, and applying an anomaly detection algorithm to said second set of modified data.

10. Apparatus for processing performance data from a communications network comprising one or more network elements, the apparatus comprising:

means for receiving network data from a network element;

means for converting said network data from a time-series format to a time-frequency format;

means for modifying said converted network data by removing a first set of frequency components to create a first set of modified data; and

means for applying an anomaly detection algorithm to said first set of modified data.

13. A medium or media containing therein a program or group of programs arranged to enable a programmable device or a group of programmable devices to provide the apparatus of claim 10.

11. Apparatus for processing performance data from a communications network comprising one or more network elements, the apparatus comprising:

means for receiving network data from a network element;

means for converting said network data from a time-series format to a time-frequency format using a wavelet transform;

means for modifying said converted network data by removing a first set of frequency components to create a first set of modified data; and

means for reconverting said first set of modified data from said time-frequency format to said time-series format using an inverse wavelet transform.