ARCHITECTURE AND TWO-LAYERED PROTOCOL FOR REAL-TIME LOCATION-AWARE APPLICATIONS

• US 20110246606A1
• Filed: 04/07/2011
• Published: 10/06/2011
• Est. Priority Date: 10/07/2008
• Status: Active Grant

• Current Assignee: University of South Florida (State University System of Florida)
• Original Assignee: University of South Florida (State University System of Florida)
• Inventors: Perez, Alfredo, Winters, Philip L., Barbeau, Sean J., Labrador, Miguel, Georggi, Nevine, Perez, Rafael
• Granted Patent: US 8,725,831 B2
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/164 Adaptation or special uses of UDP protocol
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/024 Guidance services
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

A two-layer communication protocol that supports efficient real-time location-aware application on multiple mobile devices that must communicate with each other and/or a centralized server. The two-layer protocol includes a method of communicating data between a first mobile device and a second mobile device using a server to facilitate the communication of the data. The two-layer communication protocol also includes a method of communicating data between a first mobile device and a second mobile device using a server to facilitate the connection between the two devices. The communication of data occurs directly between the two mobile devices. Each method uses reliable, connection-oriented protocols to exchange application-level information and control signals while utilizing unreliable, connection-less protocols to communicate real-time location data. Also provided are architectures implementing these methods.

Claims

1. A method of communicating data between a first mobile device and a second mobile device, comprising:

initiating a first session of the first mobile device using a reliable protocol;

initiating a second session of the second mobile device using a reliable protocol;

receiving location updates from the second mobile device using an unreliable protocol; and

sending the location updates of the second mobile device to the first mobile device using an unreliable protocol.

2. The method of claim 1, wherein initiating a first session of a first mobile device comprises:

receiving a first session request from a first mobile device using a reliable protocol; and

sending a first session response to the first mobile device responsive to approval of the first session request.

3. The method of claim 1, wherein initiating a second session of a second mobile device comprises:

receiving a second session request from a second mobile device using a reliable protocol; and

sending a second session response to the second mobile device responsive to approval of the second session request.

4. The method of claim 1, further comprising:

receiving location updates from the first mobile device using an unreliable protocol.

5. The method of claim 1, further comprising:

receiving a subscription request from the first mobile device using a reliable protocol; and

sending the location updates of the second mobile device to the first mobile device using an unreliable protocol, responsive to a subscription request being granted.

6. The method of claim 5, further comprising:

receiving an unsubscribe request from the first mobile device, wherein the unsubscribe request was sent using a reliable protocol.

7. The method of claim 1, further comprising:

receiving a destroy session request from the first mobile device;

ending the session of the first mobile device responsive to receipt of the destroy session request from the first mobile device; and

sending a destroy session response to the first mobile device, responsive to the session of the first mobile device being ended.

8. The method of claim 1, further comprising:

receiving a destroy session request from the second mobile device;

ending the session of the second mobile device responsive to receipt of the destroy session request from the second mobile device; and

sending a destroy session response to the second mobile device, responsive to the session of the second mobile device being ended.

9. A method of communicating data between a server and a mobile device, comprising:

initiating a session with the server using a reliable protocol; and

receiving location updates of a second mobile device from the server using an unreliable protocol.

10. The method of claim 9, wherein initiating a session with the server using a reliable protocol comprises:

sending a session request to the server using a reliable protocol; and

receiving a session request response from the server responsive to the server'"'"'s approval of the session request.

11. The method of claim 9, further comprising:

sending location updates to the server using an unreliable protocol.

12. The method of claim 9, further comprising:

sending a subscription request to the server using a reliable protocol; and

receiving the location updates of the second mobile device to from the server using an unreliable protocol, responsive to the server granting the subscription request.

13. The method of claim 12, further comprising:

sending an unsubscribe request to the server using a reliable protocol.

14. The method of claim 9, further comprising:

sending a destroy session request to the server; and

receiving a destroy session response from the server, responsive to the server ending the session.

15. A method of communicating data between a first mobile device and a second mobile device, comprising:

initiating a first session of a first mobile device using a reliable protocol;

initiating a second session of a second mobile device using a reliable protocol;

receiving location updates from the second mobile device using an unreliable protocol;

receiving a contact information request for the second mobile device'"'"'s contact information from the first mobile device using a reliable protocol; and

sending a contact information response using a reliable protocol.

16. The method of claim 15, wherein initiating a first session of a first mobile device comprises:

receiving a first session request from a first mobile device using a reliable protocol; and

sending a first session response to the first mobile device responsive to approval of the first session request.

17. The method of claim 15, wherein initiating a second session of a second mobile device comprises:

receiving a second session request from a second mobile device using a reliable protocol; and

sending a second session response to the second mobile device responsive to approval of the second session request.

18. The method of claim 15, further comprising:

receiving location updates from the first mobile device using an unreliable protocol.

19. The method of claim 15, further comprising:

receiving a destroy session request from the first mobile device;

ending the session of the first mobile device responsive to receipt of the destroy session request from the first mobile device; and

sending a destroy session response to the first mobile device, responsive to the session of the first mobile device being ended.

20. The method of claim 15, further comprising:

receiving a destroy session request from the second mobile device;

ending the session of the second mobile device responsive to receipt of the destroy session request from the second mobile device; and

sending a destroy session response to the second mobile device, responsive to the session of the second mobile device being ended.

21. A method of communicating data between a first mobile device and a second mobile device, comprising:

initiating a session with a server using a reliable protocol;

sending a contact information request for the second mobile device'"'"'s contact information to the server using a reliable protocol;

receiving a contact information response from the server using a reliable protocol;

sending a subscription request to the second mobile device using a reliable protocol; and

receiving location updates from the second mobile device using an unreliable protocol, responsive to the second mobile device granting the subscription request.

22. The method of claim 21, wherein initiating a session with the server using a reliable protocol comprises:

sending a session request to the server using a reliable protocol; and

receiving a session request response from the server responsive to the server'"'"'s approval of the session request.

23. The method of claim 21, further comprising:

sending location updates to the server using an unreliable protocol.

24. The method of claim 21, further comprising:

sending an unsubscribe request to the second mobile device using a reliable protocol.

25. The method of claim 21, further comprising:

sending a destroy session request to the server; and

receiving a destroy session response from the server, responsive to the server ending the session.

26. A method of communicating data between a first mobile device and a second mobile device, comprising:

initiating a session with a server using a reliable protocol;

receiving a subscription request from the first mobile device using a reliable protocol; and

sending location updates to the first mobile device using an unreliable protocol, responsive to acceptance of the subscription request.

27. The method of claim 26, wherein initiating a session with the server using a reliable protocol comprises:

sending a session request to the server using a reliable protocol; and

receiving a session request response from the server responsive to the server'"'"'s approval of the session request.

28. The method of claim 26, further comprising:

sending location updates to the server using an unreliable protocol.

29. The method of claim 26, further comprising:

receiving an unsubscribe request from the first mobile device using a reliable protocol; and

discontinuing sending location updates to the first mobile device.

30. The method of claim 26, further comprising:

sending a destroy session request to the server; and

receiving a destroy session response from the server, responsive to the server ending the session.

31. A computer system adapted to communicate data between a first mobile device and a second mobile device, comprising:

a processor; and

a tangible memory storage including software instructions that cause the computer system to perform;

initiating a first session of the first mobile device using a reliable protocol,

initiating a second session of the second mobile device using a reliable protocol,

receiving location updates from the second mobile device using an unreliable protocol, and

sending the location updates of the second mobile device to the first mobile device using an unreliable protocol,

wherein the computer system communicates data between the first mobile device and the second mobile device.

32. The computer system of claim 31, wherein initiating a first session of a first mobile device comprises:

receiving a first session request from a first mobile device using a reliable protocol, and

sending a first session response to the first mobile device responsive to approval of the first session request.

33. The computer system of claim 31, wherein initiating a second session of a second mobile device comprises:

receiving a second session request from a second mobile device using a reliable protocol, and

sending a second session response to the second mobile device responsive to approval of the second session request.

34. The computer system of claim 31, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving location updates from the first mobile device using an unreliable protocol.

35. The computer system of claim 31, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving a subscription request from the first mobile device using a reliable protocol, and

sending the location updates of the second mobile device to the first mobile device using an unreliable protocol, responsive to a subscription request being granted.

36. The computer system of claim 35, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving an unsubscribe request from the first mobile device, wherein the unsubscribe request was sent using a reliable protocol.

37. The computer system of claim 31, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving a destroy session request from the first mobile device, ending the session of the first mobile device responsive to receipt of the destroy session request from the first mobile device, and

sending a destroy session response to the first mobile device, responsive to the session of the first mobile device being ended.

38. The computer system of claim 31, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving a destroy session request from the second mobile device, ending the session of the second mobile device responsive to receipt of the destroy session request from the second mobile device, and

sending a destroy session response to the second mobile device, responsive to the session of the second mobile device being ended.

39. A computer system adapted to communicate data between a server and a mobile device, comprising:

a processor; and

a tangible memory storage including software instructions that cause the computer system to perform;

initiating a session with the server using a reliable protocol, and receiving location updates of a second mobile device from the server using an unreliable protocol,

wherein the computer system communicates data between the server and the mobile device.

40. The computer system of claim 39, wherein initiating a session with the server using a reliable protocol comprises:

sending a session request to the server using a reliable protocol, and receiving a session request response from the server responsive to the server'"'"'s approval of the session request.

41. The computer system of claim 39, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

sending location updates to the server using an unreliable protocol.

42. The computer system of claim 39, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

sending a subscription request to the server using a reliable protocol, and receiving the location updates of the second mobile device to from the server using an unreliable protocol, responsive to the server granting the subscription request.

43. The computer system of claim 42, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

sending an unsubscribe request to the server using a reliable protocol.

44. The computer system of claim 39, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

sending a destroy session request to the server, and

receiving a destroy session response from the server, responsive to the server ending the session.

45. A computer system adapted to communicate data between a first mobile device and a second mobile device, comprising:

a processor; and

a tangible memory storage including software instructions that cause the computer system to perform;

initiating a first session of a first mobile device using a reliable protocol,

initiating a second session of a second mobile device using a reliable protocol,

receiving location updates from the second mobile device using an unreliable protocol,

receiving a contact information request for the second mobile device'"'"'s contact information from the first mobile device using a reliable protocol, and

sending a contact information response using a reliable protocol,

wherein the computer system communicates data between the first mobile device and the second mobile device,

46. The computer system of claim 45, wherein initiating a first session of a first mobile device comprises:

receiving a first session request from a first mobile device using a reliable protocol, and

sending a first session response to the first mobile device responsive to approval of the first session request.

47. The computer system of claim 45, wherein initiating a second session of a second mobile device comprises:

receiving a second session request from a second mobile device using a reliable protocol, and

sending a second session response to the second mobile device responsive to approval of the second session request.

48. The computer system of claim 45, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving location updates from the first mobile device using an unreliable protocol.

49. The computer system of claim 45, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving a destroy session request from the first mobile device, ending the session of the first mobile device responsive to receipt of the destroy session request from the first mobile device, and

sending a destroy session response to the first mobile device, responsive to the session of the first mobile device being ended.

50. The computer system of claim 45, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving a destroy session request from the second mobile device, ending the session of the second mobile device responsive to receipt of the destroy session request from the second mobile device, and

sending a destroy session response to the second mobile device, responsive to the session of the second mobile device being ended.

51. A computer system adapted to communicate data between a first mobile device and a second mobile device, comprising:

a processor; and

a tangible memory storage including software instructions that cause the computer system to perform;

initiating a session with a server using a reliable protocol, sending a contact information request for the second mobile device'"'"'s contact information to the server using a reliable protocol, receiving a contact information response from the server using a reliable protocol,

sending a subscription request to the second mobile device using a reliable protocol, and

receiving location updates from the second mobile device using an unreliable protocol, responsive to the second mobile device granting the subscription request,

wherein the computer communicates data between the first mobile device and the second mobile device.

52. The computer system of claim 51, wherein initiating a session with the server using a reliable protocol comprises:

sending a session request to the server using a reliable protocol, and receiving a session request response from the server responsive to the server'"'"'s approval of the session request.

53. The computer system of claim 51, further comprising:

sending location updates to the server using an unreliable protocol.

54. The computer system of claim 51, further comprising:

sending an unsubscribe request to the second mobile device using a reliable protocol.

55. The computer system of claim 51, further comprising:

sending a destroy session request to the server, and

receiving a destroy session response from the server, responsive to the server ending the session.

56. A computer system adapted to communicate data between a first mobile device and a second mobile device, comprising:

a processor; and

a tangible memory storage including software instructions that cause the computer system to perform;

initiating a session with a server using a reliable protocol, receiving a subscription request from the first mobile device using a reliable protocol, and

sending location updates to the first mobile device using an unreliable protocol, responsive to acceptance of the subscription request,

wherein the computer communicates data between the first mobile device and the second mobile device.

57. The computer system of claim 56, wherein initiating a session with the server using a reliable protocol comprises:

sending a session request to the server using a reliable protocol, and receiving a session request response from the server responsive to the server'"'"'s approval of the session request.

58. The computer system of claim 56, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

sending location updates to the server using an unreliable protocol.

59. The computer system of claim 56, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

receiving an unsubscribe request from the first mobile device using a reliable protocol, and

discontinuing sending location updates to the first mobile device.

60. The computer system of claim 56, wherein the tangible memory storage further includes software instructions that cause the computer system to perform:

sending a destroy session request to the server, and

receiving a destroy session response from the server, responsive to the server ending the session.