System and method for establishing and monitoring the relative location of group members

• US 7,181,228 B2
• Filed: 03/23/2004
• Issued: 02/20/2007
• Est. Priority Date: 12/31/2003
• Status: Active Grant

• Current Assignee: Corporation for National Research Initiatives
• Original Assignee: Corporation for National Research Initiatives
• Inventors: Boesch, Brian
• Primary Examiner(s): Kincaid; Lester G.
• Assistant Examiner(s): Casca; Fred A.
• APPLICATION: US 20050143096A1
• Time in patent office: 1064 Days
• Field of Search: 455/404.2, 455/404.1, 455/456.1, 455/456.3
• US Class Current: 455/456.1
• CPC Class Codes: G01S 19/14 specially adapted for specific applications
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: G01S 5/0289 of multiple transceivers, e.g. in ad hoc networks

Abstract

Systems and methods for monitoring a perimeter for ingress or egress by a member of an ad hoc wireless network. A wireless device is equipped with location means. In an embodiment, the wireless device is a cellular telephone equipped with a GPS chip set. A plurality of such wireless devices form an ad hoc network and are linked to a server in association with each other. The server receives retains perimeter boundary data and receives positioning information from each of the plurality of associated wireless devices. The locations of each member of a network are tracked relative to perimeter. A perimeter may be an egress perimeter, which defines an area in which monitored units are permitted to roam but from which network members may not leave. A perimeter may be an ingress perimeter, which defines an area in which monitored units are not permitted to enter. An ingress perimeter may reside within an egress perimeter. The system provides warnings when a perimeter boundary is approached or crossed.

Claims

1. A system for locating a member of a group, wherein each member of the group comprises a portable wireless monitored device equipped with location means, the system comprising:

at least first portable wireless monitored device and a second portable wireless monitored device each equipped with location means, wherein the first and second portable wireless monitored devices are accessible via a wireless network; and

a server accessible via the wireless network, the sever adapted to;

receive location data from the first portable wireless monitored device and the second portable wireless monitored device;

establish a location rule for the first portable wireless monitored device,

wherein the location rule comprises a proximity threshold relative to the second portable wireless monitored device and wherein the proximity threshold relative to the second portable wireless monitored device comprises a maximum allowable separation threshold;

determine whether the first portable wireless monitored device is in violation of the location rule established for the first portable wireless monitored device; and

in the event the first portable wireless monitored device in violation of the location rule established for the first portable wireless monitored device, report the location data of the first portable wireless monitored device directly to the first portable wireless monitored device.

2. The system of claim 1, wherein the server is further adapted to in the event the first portable wireless monitored device is in violation of the location rule established for the first portable wireless monitored device, report the location data of the first portable wireless monitored device directly to the second portable wireless monitored device.

3. The system of claim 1, wherein the first and second portable wireless monitored devices are a cell phone.

4. The system of claim 3, wherein the wireless network is a cell phone network.

5. The system of claim 1, wherein the location means comprises a GPS chip adapted to acquire and process a GPS signal.

6. The system of claim 1, wherein the server is located on the second portable wireless monitored device.

7. The system of claim 1, wherein the first portable monitored wireless device comprises a display and wherein the display is adapted to receive and to display the location data.

8. The system of claim 7, wherein the location data is displayed in a form selected from the group consisting of a text message and a graphical display.

9. A system for locating a member of a group relative to a perimeter boundary comprising:

the group comprising at least a first member and a second member, each comprising a portable wireless monitored device equipped with location means, wherein the portable wireless monitored device is accessible via a wireless network; and

a server accessible via the wireless network, the server adapted to;

receive location data from the first member portable wireless monitored device;

determine the location the first member portable wireless monitored device relative to a perimeter boundary;

determine whether the first member portable wireless monitored device is within a proximity threshold of the perimeter boundary; and

in the event that the first member portable wireless monitored device is within the proximity threshold of the perimeter boundary, report the location data of the first member portable wireless monitored device directly to at least the second member portable wireless monitored device.

10. The system of claim 9, wherein the portable wireless monitored device is a cell phone.

11. The system of claim 10, wherein the wireless network is a cell phone network.

12. The system of claim 9 wherein each of the location means comprises a GPS chip set adapted to acquire and process a GPS signal.

13. The system of claim 9, wherein the perimeter boundary is an egress perimeter boundary that defines an area from which the portable wireless monitored device may not depart.

14. The system of claim 9, wherein the perimeter boundary is an ingress perimeter boundary that defines an area into which the portable wireless monitored device may not enter.

15. The system of claim 9, wherein the server is located on the second member portable wireless monitored device.

16. The system of claim 9, wherein the portable wireless monitored device comprises a display and wherein the display is adapted to receive and to display the location data.

17. The system of claim 16, wherein the location data is displayed in a form selected from the group consisting of a text message and a graphical display.

18. A system for locating members of a group comprising:

the group comprising a plurality of portable wireless monitored devices; and

a server accessible via a wireless network, the server adapted to;

receive location data from a portable wireless monitored device;

determine the location of the portable wireless monitored device relative to the location of the plurality of portable wireless monitored devices; and

report to the portable wireless monitored device the location data of the portable wireless monitored device relative to the location of the plurality of portable wireless monitored devices.

19. The system of claim 18, wherein the portable wireless monitored device is a cell phone.

20. The system of claim 19, wherein the wireless network is a cell phone network.

21. The system of claim 18 wherein each of the location means comprises a GPS chip adapted to acquire and process a GPS signal.

22. The system of claim 18, wherein the server is located on one of the plurality of portable wireless monitored devices.

23. The system of claim 18, wherein the portable wireless monitored device comprises a display and wherein the display is adapted to receive and to display the location data.

24. The system of claim 23, wherein the location data is displayed in a form selected from the group consisting of a text message and a graphical display.

25. A method for locating portable wireless monitored devices on an ad hoc network comprising:

creating an identifier for a portable wireless monitored device;

establishing a location rule for the portable wireless monitored device;

receiving location data from the portable wireless monitored device;

determining whether the portable wireless monitored device is in violation of the location rule; and

in the event the portable wireless monitored device is in violation of the location rule, reporting the location data of the portable wireless monitored device directly to at least one other portable wireless monitored device on the ad hoc network.

26. The method for locating a portable wireless monitored device on an ad hoc network of claim 25, wherein establishing a location rule for the portable wireless monitored device comprises establishing a proximity threshold relative to a perimeter boundary.

27. The method for locating a portable wireless monitored device on an ad hoc network of claim 26, wherein establishing a proximity threshold relative to a perimeter boundary comprises establishing a proximity threshold relative to an egress perimeter boundary that defines an area from which a portable wireless monitored device may not depart.

28. The method for locating a portable wireless monitored device on an ad hoc network of claim 26, wherein establishing a proximity threshold relative to a perimeter boundary comprises establishing a proximity threshold relative to ingress perimeter boundary that defines an area into which a portable wireless monitored device may not enter.

29. The method locating a portable wireless monitored device on an ad hoc network of claim 25, wherein establishing a location rule for the portable wireless monitored device comprises establishing a proximity threshold relative to another portable wireless monitored device on the ad hoc network.

30. The method for locating a portable wireless monitored device on an ad hoc network of claim 29, wherein establishing a proximity threshold relative to another portable wireless monitored device on the ad hoc network comprises establishing a maximum allowable separation threshold between the portable wireless monitored device and the another portable wireless monitored device on the ad hoc network.

31. The system of claim 25, wherein the portable wireless monitored device comprises a display and wherein the display is adapted to receive and to display the location data.

32. The system of claim 31, wherein the location data is displayed in a form selected from the group consisting of a text message and a graphical display.