Wireless communications device and integrated circuits with global positioning and method for use therewith

• US 8,064,923 B2
• Filed: 04/28/2007
• Issued: 11/22/2011
• Est. Priority Date: 04/28/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza (Reza)
• Primary Examiner(s): Chang; Kent
• Assistant Examiner(s): Eisner; Ronald
• Application Number:
  US11/796,648
• Publication Number:
  US 20080268872A1
• Time in Patent Office: 1,669 Days
• Field of Search: 342/357.14, 455/556.1, 455/456.5, 455/456.6, 455/403, 455/404.1, 455/404.2, 455/414.2
• US Class Current: 455/456.1
• CPC Class Codes: G01C 19/5656 the devices involving a micromechanical structure
• CPC Class Codes: G01S 5/011 Identifying the radio environment
• CPC Class Codes: H04M 2250/10 including a GPS signal receiver

Abstract

A circuit includes a global positioning system (GPS) receiver that receives a GPS signal and that generates GPS position data based on the GPS signal. A wireless telephone transceiver section coupled to generate an outbound RF signal from an outbound symbol stream, and to convert an inbound RF signal into an inbound symbol stream. A processing module is coupled to convert outbound data into the outbound symbol stream, convert the inbound symbol stream into inbound data, to weight the GPS position data with a first weighting factor when the wireless telephone transceiver section is generating the outbound RF signal to produce first weighted GPS position data and weight the GPS position data with a second weighting factor with a second weighting factor when the wireless telephone transceiver section is not generating the outbound RE signal to produce second weighted GPS position data, and to generate position information based on at least one of the first and second weighted GPS position data.

Claims

1. A circuit comprising:

a global positioning system (GPS) receiver that receives a GPS signal and that generates GPS position data based on the GPS signal;

a wireless telephone transceiver section coupled to;

generate an outbound RF signal from an outbound symbol stream; and

convert an inbound RF signal into an inbound symbol stream;

a processing module coupled to;

convert outbound data into the outbound symbol stream;

convert the inbound symbol stream into inbound data;

weight the GPS position data with a first weighting factor when the wireless telephone transceiver section is generating the outbound RF signal to produce first weighted GPS position data and

weight the GPS position data with a second weighting factor when the wireless telephone transceiver section is not generating the outbound RF signal to produce second weighted GPS position data,

wherein the first weighting factor is a non-zero number that is less than the second weighting factor;

generate position information based on at least one of the first and second weighted GPS position data,

the circuit further comprising;

a gyrating circuit that generates a motion parameter based on motion of the circuit;

wherein the processing module is further operable to;

process the motion parameter to produce motion data;

generate position information, when the wireless telephone transceiver section is generating the outbound RF signal, by generating position information based on motion data.

2. The circuit of claim 1 wherein the second weighting factor is approximately one.

3. The circuit of claim 1 wherein the processing module converts the outbound data into the outbound symbol stream and converts the inbound symbol stream into the inbound data in accordance with a cellular data protocol.

4. The circuit of claim 1 wherein the processing module converts the outbound data into the outbound symbol stream and converts the inbound symbol stream into the inbound data in accordance with a cellular voice protocol.

5. The circuit of claim 1 wherein the processing module generates position information, when the wireless telephone transceiver section is generating the outbound RF signal, by basing position information on prior GPS position information.

6. The circuit of claim 1 wherein the motion data includes a motion vector and wherein the processing module generates estimated position data based on prior GPS position information and based on the motion vector.

7. The circuit of claim 6 wherein, when the wireless telephone transceiver section is generating the outbound RF signal, the processing module generates the position information based on estimated position data.

8. The circuit of claim 7 wherein the processing module generates the position information based on a weighted combination of the estimated position data and the GPS position data.

9. The circuit of claim 8 wherein the processing module is further operable to weight the estimated position data with a third weighting factor when the wireless telephone transceiver section is generating the outbound RF signal to produce first weighted estimated position data and weight the estimated position data with a fourth weighting factor when the wireless telephone transceiver section is not generating the outbound RF signal to produce second weighted estimated position data, wherein the fourth weighting factor is less than the third weighting factor.

10. The circuit of claim 1 wherein the outbound symbol stream includes the position information.

11. A method comprising:

receiving a GPS signal;

generating GPS position data based on the GPS signal;

converting outbound data into an outbound symbol stream;

generating an outbound RF signal from the outbound symbol stream;

converting an inbound RF signal into an inbound symbol stream;

converting the inbound symbol stream into inbound data;

weighting the GPS position data with a first weighting factor when generating the outbound RF signal to produce first weighted GPS position data;

weighting the GPS position data with a second weighting factor when the wireless telephone transceiver section is not generating the outbound RF signal to produce second weighted GPS position data,

wherein the first weighting factor is a non-zero number that is less than the second weighting factor; and

generating position information based on at least one of the first and second weighted GPS position data,

the method further comprising;

generating a motion parameter based on motion of a gyrating circuit;

processing the motion parameter to produce motion data;

generating position information, when generating the outbound RF signal, based on motion data.

12. The method of claim 11 wherein the second weighting factor is approximately one.

13. The method of claim 11 wherein the steps of converting the outbound data into the outbound symbol stream and converting the inbound symbol stream into the inbound data operate in accordance with a cellular data protocol.

14. The method of claim 11 wherein the steps of converting the outbound data into the outbound symbol stream and converting the inbound symbol stream into the inbound data operate in accordance with a cellular voice protocol.

15. The method of claim 11 wherein the step of generating position information, when generating the outbound RF signal, operates based on prior GPS position information.

16. The method of claim 11 wherein the motion data includes a motion vector and wherein the step of generating position information includes generating estimated position data based on prior GPS position information and based on the motion vector.

17. The method of claim 16 wherein, when generating the outbound RF signal, the step of generating position information includes generating the position information based on estimated position data.

18. The method of claim 17 wherein the step of generating position information includes generating the position information based on a weighted combination of the estimated position data and the GPS position data.

19. The method of claim 18 step of generating position information further includes weighting the estimated position data with a third weighting factor when the wireless telephone transceiver section is generating the outbound RF signal to produce first weighted estimated position data and weighting the estimated position data with a fourth weighting factor when the wireless telephone transceiver section is not generating the outbound RF signal to produce second weighted estimated position data, wherein the fourth weighting factor is less than the third weighting factor.

20. The method of claim 11 wherein the outbound symbol stream includes the position information.