Independently acquiring and tracking wireless communication system signalling channel assignments on communication links
A system for monitoring each channel of the communication link ( 307 ) for protocol messages and identifying a set of channels with valid protocol messages and, monitoring the set of channels to determine the transceivers ( 309 ) served by the set of channels and associating the transciver ( 309 ) with respective channels from the set of channels.
1. In a communication system where a base transceiver station and a base station controller are operably connected by a communication link having a plurality of communication channels, a method for determining communication channel assignment comprising the steps of:
monitoring each communication channel of the communication link for protocol messages and identifying a set of channels with valid protocol messages;
monitoring the set of channels to determine transceivers served by the set of channels and associating the transceivers with respective channels from the set of channels;
monitoring messages of each of the respective channels associated with each transceiver to determine broadcast channels assigned to the transceiver; and,
mapping the broadcast channels to a network device, and monitoring the broadcast channels to determine a parameter value for the broadcast channel.
2. The method of claim 1 wherein the step of monitoring each communication channel includes determining whether the communication channels contain protocol messages and if the protocol messages have consecutive valid values over a predetermined period of time.
3. The method of claim 2 wherein the protocol messages are Link Access Protocol-D (LAPD) messages.
4. The method of claim 1 wherein the step of monitoring the set of channels includes the step of monitoring the set of channels for a unique value in a predetermined field over a predetermined period.
5. The method of claim 4 wherein the unique field is a Terminal Endpoint Identifier (TEI) field.
6. The method of claim 1 wherein the step of monitoring messages of each of the respective channels to determine a broadcast channel includes the step of monitoring an information element field.
7. The method of claim 6 wherein the Information Element (IE) field is found in the assignment command message sent from the Base Station Controller (BSC) to the transceiver.
8. The method of claim 1 wherein the parameter is Common Gateway Identifier (CGI).
9. The method of claim 8 further comprising associating transceivers with the same CGI.
10. The method of claim 1 further comprising the step of determining signaling channel rate based on signal allocation method.
11. The method of claim 10 wherein the signal allocation method is unconcentrated (UNCONC).
12. The method of claim 10 wherein the signal allocation method is LAPD concentrated (CONC).
13. The method of claim 10 wherein the signal allocation method is 16 kB Mulitplex (MPLEX16).
14. The method of claim 10 wherein the signal allocation method is 32 kB Multiplex (MPLEX32).
15. The method of claim 1 wherein the communication link is a T span.
16. The method of claim 15 wherein the T span is a T1 line.
17. The method of claim 15 wherein the T span is a T3 line.
18. In a communication network having a base transceiver station and a base station controller operably connected by a communication link with a plurality of channels, a method for obtaining communication channel assignment without cooperation from the communication system comprising the steps of monitoring the communication link for signaling channels and mapping communication channels with information obtained from the signaling channels;
selecting channels from the plurality of channels in the communication link used for Abis signaling and forming a set of selected channels;
monitoring the set of selected channels to detect a known subset of base transceiver stations and associating the set of selected channels with the subset of base transceiver stations; and,
monitoring the associated channels for each base transceiver stations in the subset for broadcast channel values associated with each base transceiver station.
19. The method of claim 18 wherein the communication link is a T span.
20. The method of claim 19 where T span is T1 or T3.
21. The method of claim 18 wherein the step of selecting channels comprises the step of monitoring all the channels for valid Link Access Protocol-D (LAPD) messages.
22. The method of claim 21 wherein the step of monitoring the channels comprises the step of detecting a predetermined number of consecutive LAPD messages in a predetermined time period.
23. The method of claim 18 wherein the step of monitoring the set of selected channels comprises the step of: determining which channels have constant values in predetermined fields over a second predetermined period of time.
24. The method of claim 23 wherein one of the predetermined fields is a network entity identification field.
25. The method of claim 18 wherein the step of monitoring the set of selected channels comprises the step of: determining which channels have a constant value in a predetermined field and another field having a predetermined number of values over a second predetermined period of time.
26. The method of claim 25 wherein the another field is a transceiver identification field.
27. The method of claim 18 wherein the communication link is an Optical Carrier-3 (OC-3) line.
28. A method of acquiring channel assignments by monitoring signaling channels between network entities connected by a communication link comprising the steps of:
selecting communication channels in the communication link used for Abis signaling and forming a set of selected channels;
monitoring the set of selected channels to detect a known subset of network entities;
associating the set of selected channels with the subset of network entities; and,
monitoring the associated channels for each network entity for broadcast channel values associated with each network entity.
29. The method of claim 28 wherein the step of selecting communication channels comprises the step of monitoring all the channels for valid Link Access Protocol-D (LAPD) messages.
30. The method of claim 29 wherein the step of monitoring the communication channels comprises the step of detecting a predetermined number of consecutive LAPD messages in a predetermined time period on the communication channels.
31. The method of claim 28 wherein the set of monitoring the set of selected channels comprises the step of: determining which channels have constant values in predetermined fields over a second predetermined period of time.
32. The method of claim 31 wherein one of the predetermined fields is a network entity identification field.
33. The method of claim 28 wherein the step of monitoring the set of selected channels comprises the step of: determining which channels have a constant value in a predetermined field and another field having a predetermined number of values over a second predetermined period of time.
34. The method of claim 33 wherein the another field is a network entity identification field.
35. The method of claim 28 wherein the step of determining channel data rate is based on signal allocation method.
36. The method of claim 35 wherein the signal allocation method is unconcentrated (UNCONC).
37. The method of claim 35 wherein the signal allocation method is concentrated (CONC).
38. The method of claim 35 wherein the signal allocation method is 16 kB Multiplex (MPLEX16).
39. The method of claim 35 wherein the signal allocation method is 32 kB Multiplex (MPLEX32).
40. The method of claim 28 wherein the communication link is a T span.
41. The method of claim 40 wherein the T span is a T1 line.
42. The method of claim 40 wherein the T span is a T3 line.
43. The method of claim 28 wherein the communication link is a Optical Carrier (OC) line.
44. The method of claim 43 wherein the OC line is a OC-3.
45. The method of claim 28 further comprising the set of determining channel data rate.