System and method for managing a telecommunications network by associating and correlating network events

• US 5,761,502 A
• Filed: 12/29/1995
• Issued: 06/02/1998
• Est. Priority Date: 12/29/1995
• Status: Expired due to Term

• Current Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Original Assignee: MCI Incorporated (Verizon Communications Inc.)
• Inventors: Jacobs, Andrew Robin
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): HOMERE, JEAN RAYMOND
• Application Number:
  US08/581,262
• Time in Patent Office: 886 Days
• Field of Search: 395/610, 395/615, 395/614, 395/200.02, 395/200.11, 395/200.15, 395/183.02, 379/279, 379/220
• US Class Current: 1/1
• CPC Class Codes: H04L 41/0631 using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
• CPC Class Codes: H04L 41/16 using machine learning or artificial intelligence

Abstract

System and method for managing telecommunications networks. The state of network elements is managed by associating and correlating network events across many different network domains. Network elements include tangible elements, such as hardware and equipment, and non-tangible elements, such as customers, countries, and services. By incorporating an inferencing engine or expert system, sources of network problems are inferred, impacts of network events are assessed, and corrective actions are recommended.

Claims

1. A method for managing a telecommunications network, comprising:

(1) maintaining a network object database comprising a plurality of network objects, wherein each of said network objects corresponds to at least one of a plurality of network elements, said plurality of network elements including tangible network elements and non-tangible network elements, wherein each of said network objects is defined by a set of attributes, each of said attributes having a value that represents a current state of the corresponding network element;

(2) receiving network event information from a plurality of network domains;

(3) identifying each of said network objects that is impacted by said network event information as impacted network objects, wherein said impacted network objects correspond to impacted network elements;

(4) identifying each of said attributes of said impacted network objects that is impacted by said network event information as impacted attributes;

(5) changing the value of said impacted attributes to reflect the impact of said network event information, thereby updating the current state of said impacted network elements to incorporate a state change and correlating network event information from at least one network domain with state changes in said at least one network domain and other network domains; and

(6) providing data reflecting the current state of said network elements and the updated current state of said impacted network elements to a network management workstation.

2. The method of claim 1, wherein step (1) further comprises:

(a) maintaining a network topology object database containing said network objects;

(b) maintaining a call data object database containing a plurality of call data objects, wherein each of said call data objects is defined by a set of call data attributes that correspond to data contained in network call data records; and

(c) maintaining a traffic metrics object database containing a plurality of network traffic objects, wherein each of said network traffic objects is defined by a set of network traffic attributes that corresponds to network traffic data.

3. The method of claim 2, wherein step (2) further comprises:

(a) parsing said network event information to identify an event; and

(b) creating an event object defined by a set of event object attributes that corresponds to said event.

4. The method of claim 3, further comprising:

(c) repeating steps (a) and (b) for each event contained in said network event information.

5. The method of claim 3, wherein said network event information comprises network alarms and network outage information.

6. The method of claim 3, wherein said event object attributes are used in step (5) to change the value of said impacted attributes to update the current state of said impacted network elements.

7. The method of claim 6, wherein said call data attributes and said network traffic attributes are used in step (5) to change the value of said impacted attributes to update the current state of said impacted network elements.

8. The method of claim 2, wherein said call data attributes are used in step (5) to change the value of said impacted attributes to update the current state of said impacted network elements.

9. The method of claim 2, wherein said network traffic attributes are used in step (5) to change the value of said impacted attributes to update the current state of said impacted network elements.

10. The method of claim 2, wherein said network objects in said network topology object database comprise:

network customer objects defined by a set of network customer attributes that correspond to network customers;

network country objects defined by a set of network country attributes that correspond to countries served by the network; and

network service objects defined by a set of network service attributes that correspond to services performed by the network.

11. The method of claim 10, wherein said network objects in said network topology object database further comprise:

network hardware objects defined by a set of network hardware attributes that correspond to hardware elements of the network.

12. The method of claim 11, wherein said network objects in said network topology object database further comprise:

network route objects defined by a set of network route attributes that correspond to network routes.

13. The method of claim 12, further comprising:

(7) receiving notification of a route change to said network routes;

(8) identifying each of said network route objects that is impacted by said route change as impacted network route objects;

(9) identifying each of said network route attributes of said impacted network route objects that is impacted by said route change as impacted network route attributes;

(10) changing the value of said impacted network route attributes to reflect the impact of said route change.

14. The method of claim 11, further comprising:

(7) receiving notification of a hardware change to said hardware elements of the network;

(8) identifying each of said network hardware objects that is impacted by said hardware change as impacted network hardware objects;

(9) identifying each of said network hardware attributes of said impacted network hardware objects that is impacted by said hardware change as impacted network hardware attributes;

(10) changing the value of said impacted network hardware attributes to reflect the impact of said hardware change.

15. The method of claim 1, further comprising:

(7) for each of said impacted network elements, determining whether said state change is a significant state change; and

(8) sending a notification message to said network management workstation for each significant state change.

16. The method of claim 2, wherein step (1)(a) comprises:

(i) maintaining a network state object database containing a plurality of network state objects, wherein each of said network state object is linked to a corresponding network object.

17. The method of claim 16, wherein each of said network state objects is defined by a set of network state attributes that represent the dynamic state of the corresponding network object.

18. The method of claim 10, wherein said network customer objects have a predefined relationship to said network country objects and to said network service objects.

19. The method of claim 1, wherein said plurality of network domains comprises transmission, switching, customer traffic, and network routing domains.

20. A method for managing a telecommunications network, comprising:

(1) maintaining a network topology object database comprising a plurality of network objects, wherein each of said network objects corresponds to at least one of a plurality of network elements, said plurality of network elements including tangible network elements and non-tangible network elements, wherein each of said network objects is defined by a set of attributes, each of said attributes having a value that represents a current state of the corresponding network element;

(2) receiving network event information from a plurality of network domains;

(3) receiving network topology information;

(4) identifying each of said network objects that is impacted by said network event information, and each of said network objects that is impacted by said network topology information, as impacted network objects, wherein said impacted network objects correspond to impacted network elements;

(5) identifying each of said attributes of said impacted network objects that is impacted by said network event information and said network topology information as impacted attributes;

(6) changing the value of said impacted attributes to reflect the impact of said network event information and said network topology information, thereby updating the current state of said impacted network elements to incorporate a state change and correlating network event information from at least one network domain with state changes in said at least one network domain and other network domains;

(7) for each of said impacted network elements, determining whether said state change is a significant state change;

(8) for each significant state change, applying an expert system rule to produce an assessment of said significant state change and providing said assessment to a network management workstation; and

(9) providing data reflecting the current state of said network elements and the updated current state of said impacted network elements to the network management workstation.

21. The method of claim 20, further comprising:

(10) maintaining a call data object database containing a plurality of call data objects, wherein each of said call data objects is defined by a set of call data attributes that correspond to data contained in network call data records, wherein said call data attributes are used in step (6) to change the value of said impacted attributes to update the current state of said impacted network elements.

22. The method of claim 20, further comprising:

(10) maintaining a traffic metrics object database containing a plurality of network traffic objects, wherein each of said network traffic objects is defined by a set of network traffic attributes that correspond to network traffic data, wherein said network traffic attributes are used in step (6) to change the value of said impacted attributes to update the current state of said impacted network elements.

23. The method of claim 20, wherein step (2) further comprises:

(a) parsing said network event information to identify an event; and

(b) creating an event object defined by a set of event object attributes that correspond to said event.

24. The method of claim 20, wherein said network objects in said network topology object database comprise:

network customer objects defined by a set of network customer attributes that correspond to network customers;

network country objects defined by a set of network country attributes that correspond to countries served by the network; and

network service objects defined by a set of network service attributes that correspond to services performed by the network.

25. The method of claim 24, wherein said network objects in said network topology object database further comprise:

network hardware objects defined by a set of network hardware attributes that correspond to hardware elements of the network.

26. The method of claim 25, wherein said network objects in said network topology object database further comprise:

network route objects defined by a set of network route attributes that correspond to network routes.

27. The method of claim 26, wherein said network topology information comprises a route change to said network routes, further comprising:

(10) identifying each of said network route objects that is impacted by said route change as impacted network route objects;

(11) identifying each of said network route attributes of said impacted network route objects that is impacted by said route change as impacted network route attributes;

(12) changing the value of said impacted network route attributes to reflect the impact of said route change.

28. The method of claim 25, wherein said network topology information comprises a hardware change to said hardware elements of the network, further comprising:

(10) identifying each of said network hardware objects that is impacted by said hardware change as impacted network hardware objects;

(11) identifying each of said network hardware attributes of said impacted network hardware objects that is impacted by said hardware change as impacted network hardware attributes;

(12) changing the value of said impacted network hardware attributes to reflect the impact of said hardware change.

29. The method of claim 24, wherein said network customer objects have a predefined relationship to said network country objects and to said network service objects.

30. The method of claim 20, wherein said plurality of network domains comprises transmission, switching, customer traffic, and network routing domains.

31. A system for managing a telecommunications network, comprising:

a network management workstation for displaying a network state; and

network information receiving and processing means communicatively coupled to said network management workstation for receiving and processing information affecting the network state, said network information receiving and processing means comprising,

database maintenance means for maintaining a network topology object database comprising a plurality of network objects, wherein each of said network objects corresponds to at least one of a plurality of network elements, said plurality of network elements including tangible network elements and non-tangible network elements, wherein each of said network objects is defined by a set of attributes, each of said attributes having a value that represents a current state of the corresponding network element,

event receiving means for receiving network event information from a plurality of network domains,

topology receiving means for receiving network topology information,

means for identifying each of said network objects that is impacted by said network event information, and each of said network objects that is impacted by said network topology information, as impacted network objects, wherein said impacted network objects correspond to impacted network elements,

means for identifying each of said attributes of said impacted network objects that is impacted by said network event information and said network topology information as impacted attributes,

means for changing the value of said impacted attributes to reflect the impact of said network event information and said network topology information, thereby updating the current state of said impacted network elements to incorporate a state change and correlating network event information from at least one network domain with state changes in said at least one network domain and other network domains,

means for determining whether said state change is a significant state change,

means for applying an expert system rule to produce an assessment of said significant state change,

means for transmitting said assessment to said network management workstation, and

means for transmitting data reflecting the current state of said network elements and the updated current state of said impacted network elements to said network management workstation.

32. The system of claim 31, wherein said network information receiving and processing means further comprises:

means for maintaining a call data object database containing a plurality of call data objects, wherein each of said call data objects is defined by a set of call data attributes that correspond to data contained in network call data records.

33. The system of claim 31, wherein said network information receiving and processing means further comprises:

means for maintaining a traffic metrics object database containing a plurality of network traffic objects, wherein each of said network traffic objects is defined by a set of network traffic attributes that correspond to network traffic data.

34. The system of claim 31, wherein said network information receiving and processing means further comprises:

means for parsing said network event information to identify an event; and

means for creating an event object defined by a set of event object attributes that correspond to said event.

35. The system of claim 31, wherein said network information receiving and processing means further comprises:

means for generating a notification message for said significant state change, wherein said notification message triggers said means for applying to produce said assessment of said significant state change.

36. The system of claim 31, wherein said plurality of network domains comprises transmission, switching, customer traffic, and network routing domains.

37. A computer program product comprising a computer useable medium having computer program logic recorded thereon for enabling a processor in a computer system to manage a telecommunications network, said computer program logic comprising:

database maintenance means for enabling the processor to maintain a network topology object database comprising a plurality of network objects, wherein each of said network objects corresponds to at least one of a plurality of network elements, said plurality of network elements including tangible network elements and non-tangible network elements, wherein each of said network objects is defined by a set of attributes, each of said attributes having a value that represents a current state of the corresponding network element;

event receiving means for enabling the processor to receive network event information from a plurality of network domains;

topology receiving means for enabling the processor to receive network topology information;

impacted network object identifying means for enabling the processor to identify each of said network objects that is impacted by said network event information, and each of said network objects that is impacted by said network topology information, as impacted network objects, wherein said impacted network objects correspond to impacted network elements;

impacted attribute identifying means for enabling the processor to identify each of said attributes of said impacted network objects that is impacted by said network event information and said network topology information as impacted attributes;

attribute changing means for enabling the processor to change the value of said impacted attributes to reflect the impact of said network event information and said network topology information, thereby updating the current state of said impacted network elements to incorporate a state change and correlating network event information from at least one network domain with state changes in said at least one network domain and other network domains;

state change determining means for enabling the processor to determine, for each of said impacted network elements, whether said state change is a significant state change;

rule applying means for enabling the processor to apply, for each significant state change, an expert system rule to produce an assessment of said significant state change and to provide said assessment to a network management workstation; and

data providing means for enabling the processor to provide data reflecting the current state of said network elements and the updated current state of said impacted network elements to the network management workstation.

38. The computer program product of claim 37, further comprising:

notification means for enabling the processer to generate, for each significant state change, a notification message that triggers said rule applying means to apply the appropriate expert system rule.

39. The computer program product of claim 37, wherein said network topology object database comprises a network state object data base containing a plurality of network state objects, wherein each of said network state objects is linked to a corresponding network object.

40. The computer program product of claim 39, wherein each of said network state objects is defined by a set of network state attributes that represent the dynamic state of the corresponding network object.

41. The computer program product of claim 37, wherein said plurality of network domains comprises transmission, switching, customer traffic, and network routing domains.

42. A computer program product comprising a computer useable medium having computer program logic recorded thereon for enabling a processor in a computer system to manage a telecommunications network, said computer program logic comprising:

database maintenance means for enabling the processor to maintain a network object database comprising a plurality of network objects, wherein each of said network objects corresponds to at least one of a plurality of network elements, said plurality of network elements including tangible network elements and non-tangible network elements, wherein each of said network objects is defined by a set of attributes, each of said attributes having a value that represents a current state of the corresponding network element;

receiving means for enabling the processor to receive network event information from a plurality of network domains;

impacted network object identifying means for enabling the processor to identify each of said network objects that is impacted by said network event information as impacted network objects, wherein said impacted network objects correspond to impacted network elements;

impacted attributes identifying means for enabling the processor to identify each of said attributes of said impacted network objects that is impacted by said network event information as impacted attributes;

attribute changing means for enabling the processor to change the value of said impacted attributes to reflect the impact of said network event information, thereby updating the current state of said impacted network elements to incorporate a state change and correlating network event information from at least one network domain with state changes in said at least one network domain and other network domains; and

data providing means for enabling the processor to provide data reflecting the current state of said network elements and the updated current state of said impacted network elements to a network management workstation.

43. The computer program product of claim 42, wherein said plurality of network domains comprises transmission, switching, customer traffic, and network routing domains.