Distributed fault management architecture

• US 6,665,262 B1
• Filed: 02/16/1999
• Issued: 12/16/2003
• Est. Priority Date: 02/16/1999
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Ragnar, Michael, Lindskog, Peter, Oom, Jan
• Primary Examiner(s): Nguyen, Chau
• Assistant Examiner(s): HYUN, SOON D
• Application Number:
  US09/250,193
• Time in Patent Office: 1,764 Days
• Field of Search: 370/242, 370/216, 370/217, 370/218, 370/241, 370/244, 370/250, 709/223, 709/201, 714/25
• US Class Current: 370/216
• CPC Class Codes: H04L 41/044 comprising hierarchical management structures
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04L 41/0604 using filtering, e.g. reduction of information by using priority, element types, position or time
• 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

Abstract

A system and method for distributing the fault management functions throughout a communications network. Each node in the network includes an associated fault agent/configuration agent pair. The fault agent receives alarm information and correlates the alarm information to identify a cause of a fault in the network. The fault agent then determines if correction of the fault can be handled at the current node. If so, the fault agent passes information identifying the fault to the associated configuration agent, which generates reconfiguration data for handling the fault and sends the reconfiguration data to subordinate nodes for implementation. If, on the other hand, the fault agent determines that the fault cannot be handled at the current node, the fault agent passes the alarm data, in summary form, to a higher level fault agent/configuration agent pair for handling at that higher level or for further processing and passing the data up the network until a level is reached at which the fault can be handled.

Claims

1. A real time fault management system for a distributed communications network, comprising:

a plurality of network levels;

at least one fault agent associated with at least one of the network levels for detecting real time fault data associated with the distributed communications network;

at least one configuration agent associated with at least one of the network levels for controlling a configuration of at least a portion of the distributed communications network;

at least one data link for sending fault data from the at least one fault agent to the at least one configuration agent;

wherein, responsive to the real time fault data detected by the at least one fault agent having been generated by at least one subordinate fault agent, the at least one subordinate fault agent forwards information relative to the detected real time fault data; and

wherein the forwarded information is forwarded to at least one fault agent that previously requested the forwarded information via a subscription request.

2. The real time fault management system of claim 1 comprising:

a plurality of communications nodes, wherein at least one communications node is located at each said network level;

a plurality of fault agents, each fault agent associated with one of the communications nodes; and

a plurality of configuration agents, each configuration agent associated with one of the communications nodes.

3. The real time fault management system of claim 1 wherein a particular network level includes at least one fault agent and configuration agent pair.

4. The real time fault management system of claim 1 wherein the real time fault data detected by the at least one fault agent is generated by the at least one subordinate fault agent.

5. The real time fault management system of claim 4 wherein the at least one fault agent processes the real time fault data from the at least one subordinate fault agent to perform fault data correlation.

6. The real time fault management system of claim 4 wherein the at least one fault agent processes the real time fault data from the at least one subordinate fault agent to perform fault data filtering.

7. The real time fault management system of claim 4 wherein the at least one subordinate fault agent generates fault data in response to lower-level fault data generated by at least one lower level fault agent.

8. The real time fault management system of claim 1 wherein the real time fault data detected by the at least one fault agent is generated by at least one network resource associated with the at least one fault agent.

9. The real time fault management system of claim 1 wherein the at least one configuration agent generates control data in response to fault data forwarded from the at least one fault agent via the at least one data link.

10. The real time fault management system of claim 9 wherein the control data comprises instructions to reduce the effect of a detected fault.

11. The real time fault management system of claim 9 wherein the control data comprises cell plan data in a cellular telecommunications network.

12. The real time fault management system of claim 9 wherein the at least one configuration agent sends the generated control data to at least one subordinate configuration agent.

13. The real time fault management system of claim 12 wherein the at least one subordinate configuration agent processes the received control data to produce lower level control data.

14. The real time fault management system of claim 13 wherein the at least one subordinate configuration agent sends the lower level control data to a lower level configuration agent.

15. The real time fault management system of claim 13 wherein the at least one subordinate configuration agent sends the lower level control data to a network resource associated with the at least one subordinate configuration agent.

16. The real time fault management system of claim 1 wherein the distributed communications network comprises a distributed cellular telecommunications network.

17. The real time fault management system of claim 16 wherein at least one of the network levels comprises a radio network controller.

18. The real time fault management system of claim 16 wherein at least one of the network levels comprises a radio network manager.

19. The real time fault management system of claim 1 wherein the network levels are arranged in a hierarchy.