System and method of tracking a mobile device
地域：
Guelph
摘要
Systems and methods for tracking mobile devices are provided. One system comprises at least one processor and memory storing code which when executed by the at least one processor configure the at least one processor to perform a method of tracking a mobile device. The method comprises receiving broadcasting an IMSI message, receiving an IMSI attach request message from a mobile device, and identifying the mobile device within a location area.
說明書
The present disclosure generally relates to tracking devices, and in particular to a system and method of tracking a mobile device.
Unauthorized individuals may attempt to enter a premises. It is desirable to be able to track individuals that attempt to enter a premises.
In accordance with an aspect, there is provided a system for tracking a mobile device. The system comprises a processor and memory storing code which when executed by the processor configure the processor to broadcast an international mobile subscriber identity (IMSI) message; receive an IMSI attach request message from a mobile device, and identify the mobile device within a location area.
In accordance with another aspect, there is provided a method for tracking a mobile device. The method comprises broadcasting an IMSI message, receiving an IMSI attach request message from a mobile device, and identifying the mobile device within a location area.
In this respect, before explaining at least one embodiment in detail, it is to be understood that the embodiments are not limited in application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
Many further features and combinations thereof concerning embodiments described herein will appear to those skilled in the art following a reading of the instant disclosure.
權(quán)利要求
What is claimed is:1. A system for tracking mobile devices, the system comprising at least one processor and memory storing code which when executed by the at least one processor configure the at least one processor to:receive a disassemble international mobile subscriber identity (IMSI) attach message from a base station, the disassemble IMSI attach message including an IMSI and a location area identity (LAI) associated with an identified mobile device; identify the identified mobile device within a location area using the IMSI and LAI; receive a decode and capture message from the base station, the decode and capture message including a temporary mobile subscriber identity (TMSI) and LAI associated with an unidentified mobile device; and identify the unidentified mobile device as being the identified mobile device within the location area. 2. The system as claimed in claim 1 , wherein to identify the unidentified mobile device, the at least one processor is configured to:enter a finite state mode; monitor a location update state of the IMSI, the location update state comprising one of:a location update normal state; a location update IMSI attach state; and a location update periodic state; and identify a location update state associated with the TMSI as matching a location update state associated with the IMSI. 3. The system as claimed in claim 2 , wherein the at least one processor is configured to:determine that the mobile device associated with the IMSI is still within the location area. 4. A method of tracking mobile devices, the method comprising:receiving a disassemble international mobile subscriber identity (IMSI) attach message from a base station, the disassemble IMSI attach message including an IMSI and a location area identity (LAI) associated with an identified mobile device; identifying the identified mobile device within a location area using the IMSI and LAI; receiving a decode and capture message from the base station, the decode and capture message including a temporary mobile subscriber identity (TMSI) and LAI associated with an unidentified mobile device; and identifying the unidentified mobile device as being the identified mobile device within the location area. 5. The method as claimed in claim 4 , comprising:entering a finite state mode; monitoring a location update state of the IMSI, the location update state comprising one of:a location update normal state; a location update IMSI attach state; and a location update periodic state; and identifying a location update state associated with the TMSI as matching a location update state associated with the IMSI. 6. The method as claimed in claim 5 , comprising determining that the mobile device associated with the IMSI is still within the location area. 7. The system as claimed in claim 1 , wherein the at least one processor is configured to:apply a hidden markov model and bayesian filter to narrow the location area. 8. The system as claimed in claim 1 , wherein the at least one processor is configured to:periodically monitor the location of the identified mobile device by receiving periodic decode and capture messages for non-identified mobile devices from the base station. 9. The system as claimed in claim 1 , wherein the at least one processor is configured to:store IMSI location update state information; and probabilistically compare TMSI location update state information with the stored IMSI location update state information. 10. The method as claimed in claim 4 , comprising:applying a hidden markov model and bayesian filter to narrow the location area. 11. The method as claimed in claim 4 , comprising:periodically monitoring the location of the identified mobile device by receiving periodic decode and capture messages for non-identified mobile devices from the base station. 12. The method as claimed in claim 4 , comprising:storing IMSI location update state information; and probabilistically comparing TMSI location update state information with the stored IMSI location update state information. 13. A system for tracking mobile devices, the system comprising at least one processor and memory storing code which when executed by the at least one processor configure the at least one processor to:receive a disassemble international mobile subscriber identity (IMSI) attach message from a base station, the disassemble IMSI attach message including an IMSI and a location area identity (LAI) associated with an identified mobile device; identify the identified mobile device within a location area using the IMSI and LAI; receive a decode and capture message from the base station, the decode and capture message including a temporary mobile subscriber identity (TMSI) and LAI associated with an unidentified mobile device; and enter a finite state mode; monitor a location update state of the IMSI, the location update state comprising one of:a location update normal state; a location update IMSI attach state; and a location update periodic state; and identifying a location update state associated with the TMSI as matching a location update state associated with the IMSI. 14. The system as claimed in claim 11 , wherein the at least one processor is configured to:determine that the mobile device associated with the IMSI is still within the location area. 15. The system as claimed in claim 12 , wherein the at least one processor is configured to:apply a hidden markov model and bayesian filter to narrow the location area. 16. The system as claimed in claim 13 , wherein the at least one processor is configured to:store IMSI location update state information; probabilistically compare TMSI location update state information with the stored IMSI location update state information; and periodically monitor the location of the identified mobile device by receiving periodic decode and capture messages for non-identified mobile devices from the base station. 17. A method for tracking mobile devices, the method comprising:receiving a disassemble international mobile subscriber identity (IMSI) attach message from a base station, the disassemble IMSI attach message including an IMSI and a location area identity (LAI) associated with an identified mobile device; identifying the identified mobile device within a location area using the IMSI and LAI; receiving a decode and capture message from the base station, the decode and capture message including a temporary mobile subscriber identity (TMSI) and LAI associated with an unidentified mobile device; entering a finite state mode; monitoring a location update state of the IMSI, the location update state comprising one of:a location update normal state; a location update IMSI attach state; and a location update periodic state; and identifying a location update state associated with the TMSI as matching a location update state associated with the IMSI. 18. The method as claimed in claim 15 , comprising:determining that the mobile device associated with the IMSI is still within the location area. 19. The method as claimed in claim 16 , comprising:applying a hidden markov model and bayesian filter to narrow the location area. 20. The method as claimed in claim 17 , comprising:storing IMSI location update state information; probabilistically comparing TMSI location update state information with the stored IMSI location update state information; and periodically monitoring the location of the identified mobile device by receiving periodic decode and capture messages for non-identified mobile devices from the base station.
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