Method and System for Determining Road Traffic Jams Based on Information Derived from a PLMN

• US 20100285772A1
• Filed: 12/27/2007
• Published: 11/11/2010
• Est. Priority Date: 12/27/2007
• Status: Active Grant

• Current Assignee: Telecom Italia S.p.A.
• Original Assignee: Telecom Italia S.p.A.
• Inventors: Micheli, Davide, Colonna, Massimo
• Granted Patent: US 8,538,377 B2
• Time in Patent Office: Days
• US Class Current: 455/405
• CPC Class Codes: G08G 1/0104 Measuring and analyzing of parameters relative to traffic conditions

Abstract

A method of estimating traffic jams on a roads network includes receiving information from at least one cellular PLMN covering a geographic region wherein at least one road of the roads network to be monitored is located. The information includes data related to call traffic handled by the cellular PLMN in an at least one area of the geographic region, and an indication related to a mobility of mobile terminals into/out of the area The method may further include providing an indication of traffic jam in the at least one road in case the call traffic handled by the cellular PLMN in the at least one area exceeds a first threshold and the indication related to the mobility of mobile terminals into/out of the area trespasses a second threshold.

Claims

1. A method of estimating traffic jams on a roads network, comprising:

receiving information from at least one cellular PLMN covering a geographic region wherein at least one road of the roads network to be monitored is located, wherein said information comprises data related to a call traffic handled by the cellular PLMN in an at least one area of said geographic region, and an indication related to a mobility of mobile terminals into/out of said area;

providing an indication of traffic jam in said at least one road in case said call traffic handled by the cellular PLMN in the at least one area exceeds a first threshold and the indication related to the mobility of mobile terminals into/out of said area trespasses a second threshold.

2. The method of claim 1, wherein said providing the indication of traffic jam comprises:

comparing the call traffic handled by the cellular PLMN in the at least one area to the first threshold;

in case the call traffic handled by the cellular PLMN in the at least one area exceeds the first threshold, comparing the indication related to the mobility of mobile terminals into/out of said area to the second threshold; and

providing the indication of traffic jam in at least one transit direction along said road in case the mobility of mobile terminals into/out of said area trespasses the second threshold.

3. The method of claim 1, further comprising calculating at least one among the first and second thresholds based on historical data related to the call traffic handled by the cellular PLMN and, respectively, to the indications related to the mobility of mobile terminals.

4. The method of claim 3, wherein said calculating comprises calculating averages of said historical data.

5. The method of claim 3, wherein said calculating comprises determining standard deviations of a statistical distribution of said historical data.

6. The method of claim 1, wherein said at least one area includes at least one cell of the cellular PLMN, said data related to a call traffic handled by the cellular PLMN in the at least one area include data related to a number of calls handled by said at least one cell, and said indication related to the mobility of mobile terminals into/out of said area include data related to a number of handovers having the at least one cell as a source or as a destination.

7. The method of claim 6, wherein said at least one cell includes a first cell and a second cell adjacent to the first cell, and wherein said providing an indication of traffic jam in said at least one road includes providing an indication of a driving direction on the road experiencing the traffic jam, said providing the indication of the driving direction comprising:

indicating that the traffic jam is experienced in a first driving direction if the number of handovers from the first cell to the second cell trespasses the second threshold; and

indicating that the traffic jam is experienced in a second driving direction if the number of handovers from the second cell to the first cell trespasses the second threshold.

8. The method of claim 7, further comprising subdividing the at least one road into elementary road segments delimited by the boundary of the at least a first and a second cell, and providing traffic jam indications for the elementary road segments.

9. A system for estimating traffic jams on a roads network, adapted to:

receive information from at least one cellular PLMN covering a geographic region wherein at least one road of the roads network to be monitored is located, wherein said information comprises data related to a call traffic handled by the cellular PLMN in an at least one area of said geographic region, and an indication related to a mobility of mobile terminals into/out of said area;

provide an indication of traffic jam in said at least one road in case said call traffic handled by the cellular PLMN in the at least one area exceeds a first threshold and the indication related to the mobility of mobile terminals into/out of said area trespasses a second threshold.

10. The system of claim 9, wherein for providing the indication of traffic jam the system is adapted to:

compare the call traffic handled by the cellular PLMN in the at least one area to the first threshold;

in case the call traffic handled by the cellular PLMN in the at least one area exceeds the first threshold, compare the indication related to the mobility of mobile terminals into/out of said area to the second threshold; and

provide the indication of traffic jam in at least one transit direction along said road in case the mobility of mobile terminals into/out of said area trespasses the second threshold.

11. The system of claim 9, adapted to calculate at least one among the first and second thresholds based on historical data related to the call traffic handled by the cellular PLMN and, respectively, to the indications related to the mobility of mobile terminals.

12. The system of claim 11, wherein said calculate comprises calculating averages of said historical data.

13. The system of claim 12, wherein said calculate comprises determining standard deviations of a statistical distribution of said historical data.

14. The system of claim 9, wherein said at least one area includes at least one cell of the cellular PLMN, said data related to a call traffic handled by the cellular PLMN in the at least one area include data related to a number of calls handled by said at least one cell, and said indication related to the mobility of mobile terminals into/out of said area include data related to a number of handovers having the at least one cell as a source or as a destination.

15. The system of claim 14, wherein said at least one cell includes a first cell and a second cell adjacent to the first cell, and wherein the system is adapted to provide an indication of a driving direction on the road experiencing the traffic jam, said provide the indication of the driving direction comprising:

indicating that the traffic jam is experienced in a first driving direction if the number of handovers from the first cell to the second cell trespasses the second threshold; and

indicating that the traffic jam is experienced in a second driving direction if the number of handovers from the second cell to the first cell trespasses the second threshold.

16. The system of claim 15, adapted to subdivide the at least one road into elementary road segments delimited by the boundary of the at least a first and a second cell, and to provide traffic jam indications for the elementary road segments.