Motion adaptive wireless local area nework, wireless communications device and integrated circuits for use therewith

• US 20080267150A1
• Filed: 04/28/2007
• Published: 10/30/2008
• Est. Priority Date: 04/28/2007
• Status: Active Grant

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza (Reza)
• Granted Patent: US 7,894,830 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: G01S 19/49 whereby the further system is an inertial position system, e.g. loosely-coupled
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile

Abstract

A circuit includes an on-chip gyrating circuit that generates a motion parameter based on motion of the circuit. A global positioning system (GPS) receiver receives a GPS signal and that generates GPS position data based on the GPS signal. A processing module processes the motion parameter to produce motion data, generates position information based on at least one of the GPS position data and the motion data, converts outbound data into an outbound symbol stream, and converts an inbound symbol stream into inbound data. A wireless local area network (WLAN) transceiver section generates an outbound RF signal from the outbound symbol stream, and converts an inbound RF signal into the inbound symbol stream.

Claims

1. A circuit comprising:

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

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

a processing module coupled to;

process the motion parameter to produce motion data;

generates position information based on at least one of the GPS position data and the motion data;

convert outbound data into an outbound symbol stream; and

convert an inbound symbol stream into inbound data; and

a wireless local area network (WLAN) transceiver section coupled to;

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

convert an inbound RF signal into the inbound symbol stream.

2. The circuit of claim 1 wherein the processing module adjusts a receiver parameter of the GPS receiver based on the motion data.

3. The circuit of claim 1 wherein the processing module further generates a receive control signal in accordance with the motion data, wherein the wireless local area network transceiver is further operable to adjust a receive parameter based on the receive control signal, and wherein the receive parameter includes at least one of a receiver sensitivity, a protocol selection, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.

4. The circuit of claim 1 wherein the processing module further generates an antenna control signal in accordance with the motion data and wherein the antenna control signal is coupled to an antenna to modify at least one of, an in-air beamforming phase, a diversity antenna selection, an antenna gain, a polarization antenna selection, a multi-input multi-output (MIMO) antenna structure, and a single-input single-output (SISO) antenna structure.

5. The circuit of claim 1 wherein the processing module further generates a transmit control signal in accordance with the motion data, wherein the wireless local area network transceiver is further operable to adjust a transmit parameter based on the transmit control signal, and wherein the transmit parameter includes at least one of a transmit power, a protocol selection, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.

6. The circuit of claim 1 wherein the GPS receiver generates a GPS data indication that indicates a GPS data quality, wherein the processing module generates the position information based on estimated position data when the GPS data indication compares unfavorably to a first value and generates the position information based on the GPS position data when the GPS data indication compares favorably to the first value.

7. The circuit of claim 1 wherein the motion data includes a motion vector, wherein the processing module generates velocity information based on the motion vector when the GPS data indication compares unfavorably to a first value, and generates velocity information based on the GPS position data when the GPS data indication compares favorably to the first value.

8. The circuit of claim 1 wherein the wireless local area network transceiver includes position information in the outbound data and receives inbound data that includes control data.

9. The circuit of claim 8 wherein the processing module further generates a receive control signal in accordance with the control data, wherein the wireless local area network transceiver is further operable to adjust a receive parameter based on the receive control signal, and wherein the receive parameter includes at least one of a receiver sensitivity, a protocol selection, multi-input multi-output (MIMO) coefficients, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.

10. The circuit of claim 8 wherein the processing module further generates an antenna control signal in accordance with the control data, wherein the antenna control signal is coupled to an antenna to modify at least one of, an in-air beamforming phase, a diversity antenna selection, an antenna gain, a polarization antenna selection, a multi-input multi-output (MIMO) antenna structure, and a single-input single-output (SISO) antenna structure.

11. The circuit of claim 8 wherein the processing module further generates a transmit control signal in accordance with the control data, wherein the wireless local area network transceiver is further operable to adjust a transmit parameter based on the transmit control signal, and wherein the transmit parameter includes at least one of a transmit power, a protocol selection, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.

12. An integrated circuit (IC) comprising:

an on-chip gyrating circuit that generates a motion parameter based on motion of the IC, wherein the on-chip gyrating circuit is implemented with microelectromechanical systems (MEMS) technology;

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

a processing module, coupled to the on-chip gyrating circuit and the GPS transceiver, that processes the motion parameter to produce motion data and that generates position information based on the GPS position data and the motion data; and

a wireless local area network transceiver, coupled to the processing module, that generates an outbound RF signal that includes outbound data and that generates inbound data from an inbound RF signal.

13. The IC of claim 12 wherein the on-chip gyrating circuit includes one of:

a piezoelectric gyroscope;

a vibrating wheel gyroscope;

a tuning fork gyroscope;

a hemispherical resonator gyroscope; and

a rotating wheel gyroscope.

14. The IC of claim 12 wherein the IC is integrated in a package having a substrate and a first die and wherein the GPS transceiver and the on-chip gyrating circuit are implemented on the first die.

15. The IC of claim 12 wherein the IC is integrated in a package having a substrate, a first die and a second die and wherein the GPS transceiver and wireless local area network transceiver are implemented on the first die and the on-chip gyrating circuit is implemented on the second die.

16. The IC of claim 12 wherein the IC is integrated in a package having a substrate and a first die wherein the GPS transceiver, wireless local area network transceiver, processing module and the on-chip gyrating circuit are implemented on the first die.

17. The IC of claim 12 wherein the IC is integrated in a package having a substrate and a first die and a second die, and wherein the GPS transceiver, wireless local area network transceiver and processing module are implemented on the first die and the on-chip gyrating circuit is implemented on the second die.

18. A wireless communication device comprises:

an integrated circuit (IC) that includes;

a package substrate that supports an on-chip gyrating circuit that generates the motion parameter based on motion of the wireless communication device, and wherein the package substrate further supports a die that supports;

a GPS receiver that receives a GPS signal and that generates GPS position data based on the GPS signal;

a processing module, coupled to the on-chip gyrating circuit and the GPS transceiver, that processes the motion parameter to produce motion data and that generates position information based on the GPS position data and the motion data; and

a wireless local area network transceiver that generates an outbound RF signal that includes outbound data and that generates voice inbound data from an inbound RF signal; and

an antenna structure coupled to receive the inbound RF signal and to transmit the outbound RF signal.

19. The circuit of claim 18 wherein the processing module further generates a receive control signal in accordance with the motion data, and wherein the wireless local area network transceiver is further operable to adjust a receive parameter based on the receive control signal.

20. The circuit of claim 19 wherein the receive parameter includes at least one of a receiver sensitivity, a protocol selection, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.

21. The circuit of claim 18 wherein the processing module further generates an antenna control signal in accordance with the motion data.

22. The circuit of claim 21 wherein the antenna control signal is coupled to an antenna to modify at least one of, an in-air beamforming phase, a diversity antenna selection, an antenna gain, a polarization antenna selection, a multi-input multi-output (MIMO) antenna structure, and a single-input single-output (SISO) antenna structure

23. The circuit of claim 18 wherein the processing module further generates a transmit control signal in accordance with the motion data and wherein the wireless local area network transceiver is further operable to adjust a transmit parameter based on the transmit control signal.

24. The circuit of claim 23 wherein the transmit parameter includes at least one of a transmit power, a protocol selection, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.

25. The circuit of claim 18 wherein the wireless local area network transceiver includes position information in the outbound data and receives inbound data from an access point that includes control data.

26. The circuit of claim 25 wherein the processing module further generates a receive control signal in accordance with the control data and wherein the wireless local area network transceiver is further operable to adjust a receiver parameter based on the receive control signal.

27. The circuit of claim 26 wherein the receive parameter includes at least one of a receiver sensitivity, a protocol selection, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.

28. The circuit of claim 25 wherein the processing module further generates an antenna control signal in accordance with the control data and wherein the antenna control signal is coupled to an antenna to modify at least one of, an in-air beamforming phase, a diversity antenna selection, an antenna gain, a polarization antenna selection, a multi-input multi-output (MIMO) antenna structure, and a single-input single-output (SISO) antenna structure.

29. The circuit of claim 25 wherein the processing module further generates a transmit control signal in accordance with the control data and wherein the wireless local area network transceiver is further operable to adjust a transmit parameter based on the transmit control signal.

30. The circuit of claim 29 wherein the transmit parameter includes at least one of a transmit power, a protocol selection, a data rate, a packet length, a data payload length, a coding parameter, a contention period, and a back-off parameter.