Communications protocol for mobile device

• US 20040203400A1
• Filed: 12/05/2002
• Published: 10/14/2004
• Est. Priority Date: 12/05/2002
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Galetti, Ralph R.
• Granted Patent: US 7,269,429 B2
• Time in Patent Office: Days
• US Class Current: 455/63.1
• CPC Class Codes: H04B 1/3805 with built-in auxiliary receivers
• CPC Class Codes: H04M 1/72403 with means for local support of applications that increase the functionality
• CPC Class Codes: H04M 2250/10 including a GPS signal receiver

Abstract

A communication device and method for operating the same includes a GPS receiver that periodically generates a position signal, a wireless modem transmitting or receiving messages and a controller that is coupled to the receiver and the modem. The controller discontinues operating the wireless modem when the GPS signal generates the position signal and vice versa to reduce interference with the other device.

Claims

1. A method of operating a communication device having a transmitting device and a receiving device comprising:

while the transmitting device is off, tuning on a receiving device;

receiving a received signal;

turning off the receiving device; and

turning on the transmitting device.

2. A method as recited in claim 1 further comprising after receiving, waiting a predetermined amount of time.

3. A method as recited in claim 2 wherein said predetermined amount of time corresponds to a time for obtaining a position fix.

4. A method as recited in claim 1 further comprising transmitting the position signal to a base station;

receiving a response signal from the base station;

checking a checksum from the response signal.

5. A method as recited in claim 4 further comprising when the check sum is a proper checksum, changing a display on the device.

6. A method as recited in claim 1 wherein the device comprises a mobile unit.

7. A method as recited in claim 1 wherein the transmitting device comprises a wireless modem.

8. A method as recited in claim 1 wherein the receiving device comprises a GPS receiver and wherein the received signal comprises a position signal.

9. A method of operating a communication device comprising:

holding operation of a wireless modem;

turning on a GPS receiver;

receiving a position signal;

obtaining a position fix;

turning off the GPS receiver; and

turning on the wireless modem.

10. A method as recited in claim 9 wherein the step of obtaining a position fix comprises waiting a predetermined amount of time

11. A method as recited in claim 9 further comprising transmitting the position signal to a base station.

12. A method as recited in claim 11 further comprising receiving a response signal from the base station.

13. A method as recited in claim 12 further comprising checking a checksum from the response signal.

14. A method as recited in claim 13 further comprising storing the information until a checksum is received.

15. A method as recited in claim 14 further comprising when the check sum is a proper checksum, changing a display on the communication device.

16. A method as recited in claim 9 wherein the device comprises a mobile unit.

17. A communication device comprising:

a receiving device periodically receiving a plurality of signals;

a transmitting device transmitting messages; and

a controller coupled to the receiver and the modem, said controller discontinuing operation of the transmitting device when the receiving device is receiving one of the plurality of signals, thereafter said controller operating the transmitting device.

18. A device as recited in claim 17 wherein the transmitter transmits the one of the plurality of signals to a base station.

19. A device as recited in claim 18 wherein the transmitter receives a response signal from the base station having a checksum.

20. A device as recited in claim 19 wherein said controller checking a checksum from the response signal.

21. A device as recited in claim 20 further comprising a display, said controller changing the display on the device when the checksum is a proper checksum.

22. A device as recited in claim 17 wherein the transmitting device comprises a wireless modem.

23. A method as recited in claim 17 wherein the receiving device comprises a GPS receiver.