System and method for collecting continuous location updates while minimizing overall network utilization

1. A method performed by a subscriber unit for providing location updates to a wireless network comprising:

determining a current location of the subscriber unit;

comparing the current location to a second location;

receiving a location delta threshold from the wireless network, wherein the location delta threshold is selected from a plurality of geographic distances based on fee-based subscription information associated with the subscriber unit; and

transmitting a location update, including presence information, to the wireless network when the current location differs from the second location by at least the location delta threshold.

2. The method of claim 1 , wherein a size of the location delta threshold is based upon a fee paid for an account associated with the subscriber unit.

3. The method of claim 1 wherein the current location of the subscriber unit is determined using GPS.

4. The method of claim 1 wherein the current location of the subscriber unit is determined by measuring a distance between the subscriber unit and each of a plurality of base stations in the wireless network.

5. The method of claim 1 wherein the second location is a previous location of the subscriber unit.

6. The method of claim 5 wherein second location was previously transmitted to the wireless network in a location update.

7. The method of claim 1 , wherein the location delta threshold is further based, at least in part, on a type of service enabled on the subscriber unit.

8. A method performed by a subscriber unit for providing location updates to a wireless network comprising:

determining a current location of the subscriber unit;

comparing the current location to a second location;

receiving a location delta threshold from the wireless network, wherein the location delta threshold is based on a type of service enabled on the subscriber unit; and

transmitting a location update, including presence information, to the wireless network when the current location differs from the second location by at least the location delta threshold,

wherein the subscriber unit includes an associated quality of service level, and wherein the location delta threshold is further selected from a plurality of geographic distances based on the quality of service level of the subscriber unit.

9. The method of claim 8 wherein the enabled service is a presence service.

10. The method of claim 8 wherein the enabled service is a location-based service.

11. The method of claim 8 wherein the enabled service is associated with the plurality of geographic distances, each geographic distance having an associated quality of service level for the service.

12. A wireless device comprising:

a control processor; and

a program memory storing program instructions for causing the control processor to:

receive a location delta threshold from a wireless network, wherein the location delta threshold in accordance is selected from a plurality of geographic distances based on fee-based subscription information associated with the wireless device;

determine a current location of the subscriber unit;

compare the current location to a second location; and

transmit a location update, including presence information, to the wireless network when the current location differs from the second location by at least the location delta threshold determined,

wherein the program memory includes a location delta threshold function, a subscriber unit positioning function and a client application.

13. The wireless device of claim 12 further comprising a data memory storing the second location and the location delta threshold, the data memory being configurable by the wireless network.

14. The wireless device of claim 12 wherein the second location is a previous location of the wireless device.

15. The wireless device of claim 12 wherein the client application is a client presence application, and wherein a value of the location delta threshold depends on whether the client presence application is enabled.

16. The wireless device of claim 12 , wherein the location delta threshold is further based, at least in part, on a type of service enabled on the subscriber unit.

17. A wireless device comprising:

a control processor; and

a program memory storing program instructions for causing the control processor to perform steps including:

receive a location delta threshold from a wireless network, wherein the location delta threshold depends on a type of service enabled on the wireless device;

determining a current location of the subscriber unit;

comparing the current location to a second location; and

transmitting a location update, including presence information, to the wireless network when the current location differs from the second location by at least the location delta threshold,

wherein the program memory includes a location delta threshold function, a subscriber unit positioning function and a client application, and

wherein the wireless device includes an associated quality of service level, and wherein the location delta threshold is further selected from a plurality of geographic distances based on the quality of service level of the wireless device.

18. The wireless device of claim 17 further comprising a data memory storing the second location and the location delta threshold, the data memory being configurable by the wireless network.

19. The wireless device of claim 17 wherein the second location is a previous location of the wireless device.

20. The wireless device of claim 17 wherein the client application is a client presence application, and wherein a value of the location delta threshold depends on whether the client presence application is enabled.