System and methods for secure communication using an enhanced GPS receiver

• US 20080080712A1
• Filed: 09/29/2006
• Published: 04/03/2008
• Est. Priority Date: 09/29/2006
• Status: Abandoned Application

• Current Assignee: O2 Micro International Limited (O2 Micro Incorporated)
• Original Assignee: O2 Micro International Limited (O2 Micro Incorporated)
• Inventors: Huang, Haiquan, Li, Cheng, Qian, Huafeng
• Application Number:
  US11/541,470
• Publication Number:
  US 20080080712A1
• Time in Patent Office: Days
• US Class Current: 380/258
• CPC Class Codes: G01S 19/13 Receivers
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile

Abstract

An enhanced GPS receiver is provided for secure location information communication. The GPS receiver includes a GPS signal receiving unit, a GPS signal processing unit, and en encryption module. The GPS signal receiving unit is used to receive the GPS signals. The GPS signal processing unit coupled to the GPS receiving unit is used to obtain the location information of the mobile device. The encryption module encrypts the location information by using a GPS chip identification number embedded in the GPS receiver as an encryption key. The GPS receiver further optionally includes a compression module for compressing the location information before encryption.

Claims

1. A method for communicating location information between a mobile device and a remote terminal, said mobile device having a Global Positioning System (GPS) receiver, comprising:

obtaining location information from said GPS receiver, said location information representing a location of said mobile device;

obtaining a GPS chip identification number from said GPS receiver;

using said GPS chip identification number as an encryption key to encrypt said location information into an encrypted location information at said GPS receiver;

transmitting said encrypted location information to said remote terminal.

2. The method of claim 1, further comprising:

receiving said encrypted location information at said terminal;

using said GPS chip identification number as a decryption key to decrypt said encrypted location information at said terminal; and

obtaining said location information at said terminal.

3. The method of claim 1, further comprising:

compressing said location information before encrypting said location information;

4. The method of claim 1, wherein said GPS receiver having a GPS chip, said GPS chip having said GPS chip identification number, said GPS chip identification number uniquely identifying every GPS chip.

5. The method of claim 4, wherein obtaining said GPS chip identification number comprising providing a unique identification number of said GPS chip as said GPS chip identification number, said unique identification number being initially provided by a GPS chip vendor.

6. The method of claim 4, wherein obtaining said GPS chip identification number comprising providing a user-defined identification number as said GPS chip identification number.

7. The method of claim 1, wherein the encrypting is performed based on Data Encryption Standard (DES) encryption algorithm.

8. The method of claim 1, wherein the encrypting is performed based on Wireless Public Key Infrastructure (WPKI) encryption system.

9. The method of claim 1, wherein the encrypting is performed based on Message-Digest Algorithm 5 (MD5) encryption algorithm.

10. A Global Positioning System (GPS) receiver having a GPS chip identification number, comprising:

a GPS signal receiving unit for receiving GPS signals from GPS satellites;

a GPS signal processing unit coupled to said GPS signal receiving unit for processing said GPS signals and obtaining location information of said GPS receiver; and

an encryption module for encrypting said location information by using said GPS chip identification number as an encryption key and generating an encrypted location information.

11. The receiver of claim 10, wherein said receiver being further coupled to a transmitting unit, said transmitting unit being capable of receiving said encrypted location information and transmitting said encrypted location information to a terminal over a wireless network.

12. The receiver of claim 11, wherein said encrypted location information is transmitted over said wireless network by means of Short Message Service (SMS).

13. The receiver of claim 10, wherein said GPS receiver having a GPS chip, said GPS chip having said GPS chip identification number, said GPS chip identification number uniquely identifying each GPS chip.

14. The receiver of claim 13, wherein said GPS ID identification number being a unique identification number provided by a GPS vendor.

15. The receiver of claim 13, wherein said GPS ID identification number is a use-defined identification number.

16. The receiver of claim 10, wherein said encryption module is performed based on Data Encryption Standard (DES) encryption algorithm.

17. The receiver of claim 10, wherein said encryption module is performed based on Wireless Public Key Infrastructure (WPKI) encryption system.

18. The receiver of claim 10, wherein said encryption module is performed based on Message-Digest Algorithm 5 (MD5) encryption algorithm.

19. The receiver of claim 10, further comprising:

a compression module coupled to said GPS signal processing unit for compressing said location information, obtaining a compressed location information, and sending said compressed location information to said encryption module.

20. A mobile device capable of receiving GPS signals and calculating location information based on said received GPS signals, comprising:

a GPS receiver having a GPS chip identification number, said GPS receiver further comprises;

a GPS signal receiving unit for receiving GPS signals from GPS satellites;

a GPS signal processing unit coupled to said GPS signal receiving unit for processing said GPS signals and obtaining location information of said GPS receiver from said GPS signals; and

an encryption module for encrypting said location information by using said GPS chip identification number as an encryption key and generating an encrypted location information;

a transmitting unit coupled to said GPS receiver for transmitting said encrypted location information over a wireless network; and

a display unit coupled to said GPS receiver for displaying said location information.

21. The mobile device of claim 20, wherein said encrypted location information is transmitted over said wireless network by means of Short Message Service (SMS).

22. The mobile device of claim 20, wherein said GPS receiver having a GPS chip, said GPS chip having said GPS chip identification number, said GPS chip identification number uniquely identifying each GPS chip.

23. The mobile device of claim 20, wherein said encryption module is performed based on Data Encryption Standard (DES) encryption algorithm.

24. The mobile device of claim 20, wherein said encryption module is performed based on Wireless Public Key Infrastructure (WPKI) encryption system.

25. The mobile device of claim 20, wherein said encryption module is performed based on Message-Digest Algorithm 5 (MD5) encryption algorithm.

26. The mobile device of claim 20, wherein said GPS receiver further comprising a compression module coupled to said GPS signal processing unit for compressing said location information, obtaining a compressed location information, and sending said compressed location information to said encryption module.

27. A location monitoring system, comprising:

a mobile device comprising;

a Global Positioning System (GPS) receiver having a GPS chip identification number, said GPS receiver further having a GPS signal receiving unit for receiving GPS signals from GPS satellites, a GPS signal processing unit coupled to said GPS signal receiving unit for processing said GPS signals and obtaining location information of said GPS receiver, and an encryption module for encrypting said location information to generate an encrypted location information by using said GPS chip identification number as an encryption key; and

a first transmitting unit coupled to said GPS receiver for transmitting said encrypted location information over a wireless network; and

a terminal for monitoring said mobile device, comprising;

a first receiving unit for receiving said encrypted location information; and

a first decryption module coupled to said first receiving unit for decrypting said encrypted location information by using said GPS chip identification number as a decryption key.

28. The location monitoring system of claim 27, wherein said encrypted location information is transmitted over said wireless network by means of Short Message Service (SMS).

29. The location monitoring system of claim 27, wherein said GPS receiver having a GPS chip, said GPS chip having said GPS chip identification number, said GPS chip identification number uniquely identifying each GPS chip.

30. The location monitoring system of claim 27, wherein said encryption module is based on Data Encryption Standard (DES) encryption algorithm.

31. The location monitoring system of claim 27, wherein said encryption module is based on Wireless Public Key Infrastructure (WPKI) encryption system.

32. The location monitoring system of claim 27, wherein said encryption module is based on Message-Digest Algorithm 5 (MD5) encryption algorithm.

33. The location monitoring system of claim 27, wherein said GPS receiver further comprising a first compression module coupled to said GPS signal processing unit for compressing said location information, obtaining a compressed location information, and sending said compressed location information to said encryption module.

34. The location monitoring system of claim 33, wherein said terminal further comprising a first decompression module coupled to said first decryption module for decompressing said compressed location information after said encrypted location information is decrypted.

35. The location monitoring system of claim 27, wherein said mobile device further comprising a second receiving unit for receiving a terminal data from said terminal.

36. The location monitoring system of claim 35, wherein said GPS receiver further comprising a second decryption module coupled to said second receiving unit for decrypting said terminal data by using a terminal identification number as a decryption key provided by said terminal if said terminal data is encrypted with said terminal identification number.

37. The location monitoring system of claim 35, wherein said GPS receiver further comprising a second decompression module for decompressing said terminal data if said terminal data is compressed.