System and method of managing network state in mobile radio communication system

• US 6,449,257 B1
• Filed: 11/20/1998
• Issued: 09/10/2002
• Est. Priority Date: 12/31/1997
• Status: Expired due to Fees

• Current Assignee: LG Nortel Company Limited (Telefonaktiebolaget LM Ericsson)
• Original Assignee: LG Information & Communications Ltd. (LG Corporation)
• Inventors: Choi, Woo Young
• Primary Examiner(s): Hsu, Alpus H.
• Assistant Examiner(s): HO, DUC CHI
• Application Number:
  US09/196,783
• Time in Patent Office: 1,390 Days
• Field of Search: 370/217, 370/241, 370/248, 370/252, 370/328, 370/329, 370/332, 370/349, 370/338, 370/406, 370/467, 370/242, 370/442, 455/516, 455/524, 455/520, 455/406, 455/507, 455/509, 455/517
• US Class Current: 370/242
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A network state management system and method in a mobile radio communication system capable of preventing the inconsistency of the state information between a plurality of networks, routing defect, abnormal load share function, etc. According to the network state management method, a test packet is transmitted to a remote network through normal trunk links at predetermined intervals, and the trunk, which is identified as an abnormal trunk utilizing information included in the transmitted test packet, is compulsorily transmitted to an abnormal state. Thereafter, it is identified again whether the trunk link once transmitted and classified into the abnormal trunk link is in the normal or abnormal state through a separate test process, and if the trunk link is identified to be abnormal, it is managed as the normal trunk link. The network management state is renewed whenever the test packet for the trunks is transmitted.

Claims

1. A network state management system in a mobile radio communication system, comprising:

a first processor;

a first trunk transmission device connected to the first processor;

a second processor;

a second trunk transmission device connected to the second processor; and

a plurality of trunks connected between the first and second trunk transmission devices, wherein

the first and second trunk transmission devices sense and reconstruct link state information of the trunks so that the first and second processors can recognize the reconstructed link state information, and the first and second processors mutually exchange the reconstructed link state information,

the link state information indicates a normal status or an abnormal status of the respective trunks,

each of the first and second processors evaluate the link state information generated separately by the first and second trunk transmission devices and corresponding to a specific one of the plurality of trunks, and

both the first and second processors transition the specific trunk to an idle state, when the link state information generated by either one of the first and second trunk transmission devices and corresponding to the specific trunk indicates an abnormal status.

2. The network state management system as claimed in claim 1, wherein the first and second processors are a base station controller and a base station, respectively.

3. The network state management system as claimed in claim 1, wherein the link state information of the trunks is renewed at predetermined intervals.

4. The network state management system as claimed in claim 1, wherein the first and second processors comprise a state management section for transitting the link state information of the trunks in real time.

5. The network state management system as claimed in claim 1, wherein the link state information is transmitted as a test packet including a state management information on the respective trunks.

6. The network state management system as claimed in claim 5, wherein the test packet is produced by reconstructing by software the link state information of the trunks sensed by hardware.

7. The network state management system as claimed in claim 5, wherein the test packet is transmitted to the trunks through same nodes of the trunk transmission devices.

8. The network state management system as claimed in claim 5, wherein the test packet includes a header, normal link information representing information on the normal trunks currently used, and load share information representing a present state where a load of the trunks is shared to the respective base station and base station controller.

9. The network state management system as claimed in claim 8, wherein the header includes a destination address, a source address, and a packet control file of the corresponding packet.

10. The network state management system as claimed in claim 9, wherein the load share information comprises information about at least 64 base stations or base station controllers.

11. The system of claim 1, wherein the first and second processors each separately test the specific trunk to determine its operational status, after the specific trunk is idled.

12. The system of claim 11, wherein the first and second processors transition the specific trunk to an operationally available status, if both the first and second processors determine through their respective tests that the specific trunk is operational.

21. The method of claim 3, further comprising testing the specific trunk, with each of the at least two processors, to determine its operational status, after the specific trunk is idled.

22. The method of claim 21, further comprising restoring the specific trunk to an operationally available status, with each of the at least two processors, if the at least two processors determine through their respective tests that the specific trunk is operational.

23. The method of claim 22, further comprising repeatedly testing the specific trunk, with each of the at least two processors, until the specific trunk is restored to the operationally available status.

13. A network state management method in a mobile radio communication system, comprising:

providing a test packet at predetermined intervals and transmitting the test packet mutually between at least two processors;

identifying a link state of trunks for connecting the processors utilizing the test packet, so at least two processors can recognize the identified link state, and at least two processors mutually exchange the identified link state, wherein the link state indicates a normal status or an abnormal status of the respective trunks;

analyzing, with each of the at least two processors, the link state generated at separate points of a specific one of the trunks, and

transitioning, with each of the at least two processors, the specific trunk to an idle state when the link state generated at any point of the specific trunk indicates an abnormal status.

14. The network state management method as claimed in claim 13, wherein the link state information of the trunks transmitted from the first and second processors is transmitted in real time.

15. The network state management method as claimed in claim 13, wherein the test packet includes link state management information on the respective trunks.

16. The network state management method as claimed in claim 13, wherein the test packet is produced by reconstructing by software the link state information of the trunks sensed by hardware.

17. The network state management method as claimed in claim 13, wherein the test packet produced by a first trunk transmission device of the first processor is transmitted to the first processor and/or a second transmission device of the second processor, and the test packet produced by the second trunk transmission device of the second processor is transmitted to the second processor and/or the first transmission device of the first processor.

18. The network state management method as claimed in claim 13, wherein the trunk identified as an abnormal trunk at the link state identifying step is transmitted to an abnormal state.

19. The network state management method as claimed in claim 18, wherein it is identified whether the trunk once transmitted and classified into the abnormal trunk is in a normal or abnormal state through a separate test process.

20. The network state management method as claimed in claim 13, wherein the network management state obtained by the test packet providing step and the link state identifying step is renewed whenever the test packet for the trunks is transmitted.

24. The method of claim 13, further comprising:

comparing, with each of the at least two processors, the link states generated at the separate points of the specific trunk to identify an inconsistency between the separately generated link states; and

transitioning, with each of the at least two processors, the specific trunk to an idle state when the separately generated link states are inconsistent.