Method, system and radio network management functionality for radio data mapping to physical location in a cellular telecommunications network

• US 20040203717A1
• Filed: 04/23/2002
• Published: 10/14/2004
• Est. Priority Date: 04/23/2002
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Corriveau, Michel, Wingrowicz, Edward
• Application Number:
  US10/127,469
• Publication Number:
  US 20040203717A1
• Time in Patent Office: Days
• US Class Current: 455/423
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements

Abstract

A method and system for mapping radio measurements and quality parameters to location information within a cell of a wireless telecommunications system. Mobile Stations (MSs) report radio measurements such as downlink Bit-Error-Rate (BER) and downlink Signal Strength (SS) to Base Stations (BSs), which further relay the radio measurements, along with radio quality parameters to a switching node that identifies adds a time stamp and a call identification (or MS identification). The switching node then forwards the radio data to a Radio Network Management node (RNM). For the radio measurements, the RNM requests positioning information from a Positioning Device Equipment (PDE), and associates the positioning information to the radio measurements. For the radio quality parameters, the RNM correlate positioning information using the time stamp and the CallID/MSID. The RNM then outputs a graph, or other types of results, for showing the variation of the level of radio measurements and parameters within selected cells.

Claims

1. A method for mapping location information to radio data collected from a cell of a cellular telecommunications network, the method comprising the steps of:

a) collecting the radio data;

b) associating the radio data with a position where the radio data was measured within the cell; and

c) outputting a result indicative of a level of the radio data versus the position where the radio data was measured.

2. The method claimed in claim 1, wherein the step a) for collecting the radio data includes the steps of:

a.1) in a cell of the network, performing by at least a Mobile Station (MS) a Channel Quality Measurement (CQM) that includes at least one of a Bit-Error Rate measurement in a downlink direction (BER_dl) and a Signal Strength measurement in the downlink direction (SS_dl);

a.2) reporting the CQM from the MS to a serving Base Station (BS) of the MS; and

a.3) forwarding the CQM from the BS to a serving switching node; and

a.4) forwarding the CQM from the switching node to a Radio Network Management functionality (RNM);

wherein the radio data comprises the CQM.

3. The method claimed in claim 2, wherein the step a.3) further comprises the step of:

a.5) sending from the BS to the switching node radio quality parameters recorded by the BS along with the CQM;

wherein the radio data further comprises the radio quality parameters.

4. The method claimed in claim 3, wherein the radio quality parameters comprise at least one type of parameters selected from the group of radio quality parameters consisting of:

the uplink signal strength, the uplink bit-error-rate, the dropped calls, the unsuccessful call attempts, the unsuccessful handoff attempts, and the traffic load.

5. The method claimed in claim 3 further comprising the steps of:

a.6) adding to each CQM and to each radio quality measurement a time stamp indicative of the time where said each CQM and said each radio quality measurement was performed;

a.7) adding to each CQM and to each radio quality measurement an identification selected from the group of identifications consisting of a Call IDdentification (CallID) and an MS IDdentification (MSID).

6. The method claimed in claim 2, wherein step b) comprises the steps of:

b.1) sending from the RNM to a Positioning Device Equipment (PDE) a positioning request for the position where the CQM was performed by the MS;

b.2) receiving from the PDE the position where the CQM was performed by the MS; and

b.3) associating by the RNM said CQM with said position.

7. The method claimed in claim 6, wherein the PDE is a PDE selected from the group consisting of:

a Grid Point PDE, a Global Positioning system (GPS) server PDE, and a Triangulation PDE.

8. The method claimed in claim 5, wherein step b) comprises the steps of:

b.1) sending from the RNM to a Positioning Device Equipment (PDE) a positioning request for the position where the CQM was performed by the MS;

b.2) receiving from the PDE said position where the CQM was performed by the MS; and

b.3) associating by the RNM said CQM with said position.

b.4) using said time stamp and said identification, correlating at least one radio quality parameter with said CQM and deducting a position where said MS was located when said radio quality parameter was measured.

9. The method claimed in claim 1, wherein the step c) comprises the step of:

c.1) outputting a graph representing the level of the radio data versus the position where the radio data was measured over the whole cell.

10. The method claimed in claim 6, further comprising between the step a) and b) the steps of:

d.1) creating by the RNM a Radio Frequency (RF) signature for the CQM, wherein the CQM comprises the SS_dl;

d.2) correlating by the RNM the RF signature with other RF signatures of other CQMs reported by other MSs from within the cell, wherein the RF signature and the other RF signature follow a substantially similar pattern, and creating an RF signature bin comprising the RF signature and the other RF signatures;

wherein the positioning request sent by the RNM to the PDE relates to only one CQM performed by one MS, the only one CQM being representative of the pattern of the RF signature bin; and

wherein step b.3) further comprises the step of associating the position to each one of the other CQMs.

11. The method claimed in claim 10, wherein the PDE is a triangulation PDE.

12. The method claimed in claim 10, wherein the similar pattern is a pattern of a relation between the SS_dl and a plurality of BSs that measured the SS_dl.

13. A cellular telecommunications system comprising:

a radio cell served by a Base Station (BS);

a switching node for collecting from thee BS radio data related to the cell;

a Radio Network Management (RNM) functionality receiving the radio data from the switching node and associating the radio data with a position where the radio data was measured within the cell;

wherein the RNM further outputs a result indicative of a level of the radio data versus a position where the radio data was measured.

14. The cellular telecommunications system claimed in claim 13, further comprising:

at least one Mobile Station (MS) operating in the cell, the MS performing a Channel Quality Measurement (CQM) that includes at least one of a Bit-Error Rate measurement in a downlink direction (BER_dl) and a Signal Strength measurement in the downlink direction (SS_dl);

wherein the MS reports the CQM to the BS, and wherein the radio data comprises the CQM.

15. The cellular telecommunications system claimed in claim 14, wherein the BS sends to the switching node radio quality parameters recorded by the BS along with the CQM, wherein the radio data further comprises the radio quality parameters.

16. The cellular telecommunications system claimed in claim 15, wherein the radio quality parameters comprise at least one type of parameters selected from the group of radio quality parameters consisting of:

the uplink signal strength, the uplink bit-error-rate, the dropped calls, the unsuccessful call attempts, the unsuccessful handoff attempts, and the traffic load.

17. The cellular telecommunications system claimed in claim 15 wherein:

the switching node adds to each CQM and to each radio quality measurement;

i) a time stamp indicative of the time where said each CQM and said each radio quality measurement was performed, and ii) an identification selected from the group of identifications consisting of a Call IDdentification (CallID) and an MS IDdentification (MSID).

18. The cellular telecommunications system claimed in claim 14, wherein:

the RNM sends to a Positioning Device Equipment (PDE) a positioning request for the position where the MS performed the CQM;

the RNM receives from the PDE the position where the CQM was performed by the MS; and

the RNM associates said CQM with said position.

19. The method claimed in claim 18, wherein the PDE is a PDE selected from the group consisting of:

a Grid Point PDE, a Global Positioning system (GPS) server PDE, and a Triangulation PDE.

20. The cellular telecommunications system claimed in claim 17, wherein:

the RNM sends to a Positioning Device Equipment (PDE) a positioning request for the position where the CQM was performed by the MS;

the RNM receives from the PDE said position where the CQM was performed by the MS; and

the RNM associates said CQM with said position; and

using said time stamp and said identification, the RNM correlates at least one radio quality parameter with said CQM and deducts a position where said MS was located when said radio quality parameter was measured.

21. The cellular telecommunications system claimed in claim 13, wherein the RNM further outputs a graph representing the level of the radio data versus the position where the radio data was measured for the whole cell based on a plurality of radio data including said radio data.

22. The cellular telecommunications system claimed in claim 18 wherein before sending the positioning request to the PDE, the RNM:

creates a Radio Frequency (RF) signature for the CQM, wherein the CQM comprises the SS_dl; and

correlates the RF signature with other RF signatures of other CQMs reported by other MSs from within the cell, wherein the RF signature and the other RF signature follow a substantially similar pattern, and further creates an RF signature bin comprising the RF signature and the other RF signatures;

wherein the positioning request sent by the RNM to the PDE relates to only one CQM performed by one MS, the only one CQM being representative of the pattern of the RF signature bin; and

wherein upon receipt of the position from the PDE, the RNM associates the position to each one of the other CQMS.

23. The cellular telecommunications system claimed in claim 22, wherein the PDE is a triangulation PDE.

24. The cellular telecommunications system claimed in claim 22, wherein the similar pattern is a pattern of a relation between the SS_dl and a plurality of BSs that measured the SS_dl.

25. A Radio Network Management functionality (RNM) receiving radio data collected by a switching node connected to a Base Station (BS) serving a radio cell, the RNM associating the radio data with a position where the radio data was measured within the cell, and outputting a result indicative of a level of the radio data versus a position where the radio data was measured.

26. The RNM claimed in claim 25 wherein the BS serves at least one Mobile Station (MS) operating in the cell, the MS performing a Channel Quality Measurement (CQM) that includes at least one of a Bit-Error Rate measurement in a downlink direction (BER_dl) and a Signal Strength measurement in the downlink direction (SS_dl), wherein the MS reports the CQM to the BS and the switching node collects the radio data that comprises the CQM.

27. The RNM claimed in claim 26, wherein the BS sends to the switching node radio quality parameters recorded by the BS along with the CQM, wherein the radio data further comprises the radio quality parameters.

28. The RNM claimed in claim 27, wherein the radio quality parameters comprise at least one type of parameters selected from the group of radio quality parameters consisting of:

the uplink signal strength, the uplink bit-error-rate, the dropped calls, the unsuccessful call attempts, the unsuccessful handoff attempts, and the traffic load.

29. The RNM claimed in claim 27 wherein the switching node adds to each CQM and to each radio quality measurement:

i) a time stamp indicative of the time where said each CQM and said each radio quality measurement was performed, and ii) an identification selected from the group of identifications consisting of a Call IDdentification (CallID) and an MS IDdentification (MSID).

30. The RNM claimed in claim 26, wherein:

the RNM is connected to a Positioning Device Equipment (PDE) to which the RNM sends a positioning request for the position where the MS performed the CQM;

the RNM receives from the PDE the position where the CQM was performed by the MS; and

the RNM associates said CQM with said position.

31. The RNM claimed in claim 30, wherein the PDE is a PDE selected from the group consisting of:

a Grid Point PDE, a Global Positioning system (GPS) server PDE, and a Triangulation PDE.

32. The RNM claimed in claim 29, wherein:

the RNM is connected to a Positioning Device Equipment (PDE) to which the RNM sends a positioning request for the position where the CQM was performed by the MS;

the RNM receives from the PDE said position where the CQM was performed by the MS; and

the RNM associates said CQM with said position; and

using said time stamp and said identification, the RNM correlates at least one radio quality parameter with said CQM and deducts a position where said MS was located when said radio quality parameter was measured.

33. The RNM claimed in claim 25, wherein the RNM further outputs a graph representing the level of the radio data versus the position where the radio data was measured for the whole cell based on a plurality of radio data including said radio data.

34. The RNM claimed in claim 30 wherein before sending the positioning request to the PDE, the RNM:

creates a Radio Frequency (RF) signature for the CQM, wherein the CQM comprises the SS_dl; and

correlates the RF signature with other RF signatures of other CQMs reported by other MSs from within the cell, wherein the RF signature and the other RF signature follow a substantially similar pattern, and further creates an RF signature bin comprising the RF signature and the other RF signatures;

wherein the positioning request sent by the RNM to the PDE relates to only one CQM performed by one MS, the only one CQM being representative of the pattern of the RF signature bin; and

wherein upon receipt of the position from the PDE, the RNM associates the position to each one of the other CQMs.

35. The RNM claimed in claim 34, wherein the PDE is a triangulation PDE.

36. The RNM claimed in claim 34, wherein the similar pattern is a pattern of a relation between the SS_dl and a plurality of BSs that measured the SS_dl.