PERFORMANCE AND POWER MANAGEMENT IN DIRECTION OF ARRIVAL DETERMINATION BY UTILIZING SENSOR INFORMATION

• US 20080068265A1
• Filed: 09/15/2006
• Published: 03/20/2008
• Est. Priority Date: 09/15/2006
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: JANTUNEN, Joni, NURMELA, Vuokko, KAUPPINEN, Hannu, KAINULAINEN, Antti, KALLIOLA, Kimmo
• Granted Patent: US 7,548,203 B2
• Time in Patent Office: Days
• US Class Current: 342/418
• CPC Class Codes: G01S 3/023 Monitoring or calibrating
• CPC Class Codes: G01S 3/74 Multi-channel systems specially adapted for direction-finding, i.e. having a single antenna system capable of giving simultaneous indications of the directions of different signals systems in which the directions of different signals are determined sequentially and displayed simultaneously G01S3/04, G01S3/14

Abstract

A system for enhancing the performance of a wireless communication device (WCD) while executing a direction of arrival (DoA) estimation. The performance may be improved through device management, and may include the collection of information from one or more sensors installed within the WCD. The sensor information may initially be used to determine an appropriate configuration for the device. Further, the sensor information may also be used to affect the behavior of the device while performing the DoA estimation.

Claims

1. A method, comprising:

sensing, using one or more sensors in a wireless communication device, information related to a state and/or alignment of the wireless communication device;

configuring the wireless communication device based on the information sensed by the one or more sensors;

determining a direction of arrival estimate of a received signal in the wireless communication device, wherein sensed conditions relating to the state and/or alignment of the wireless communication device are utilized to affect the behavior of the wireless communication device while determining the direction of arrival estimate; and

performing power management that disables the direction of arrival estimate determination when one or more sensors detect that the wireless communication device is stationary.

2. The method of claim 1, wherein the one or more sensors include at least position sensors enabled to indicate the relative orientation of at least one section of the wireless communication device to another section of the wireless communication device.

3. The method of claim 1, wherein the one or more sensors include at least motion sensors enabled to determine when the wireless communication device is being moved.

4. The method of claim 1, wherein a direction of arrival estimate includes determining the direction of arrival of the signal using an array of directional antennas coupled to the wireless communication device, and further indicating the relative direction towards the source of the signal on a user interface in the wireless communication device.

5. The method of claim 4, wherein configuring the wireless communication device based on the information sensed by the one or more sensors includes selecting at least a direction of arrival application program, antenna calibration vectors for the antenna array and a display mode for the user interface.

6. The method of claim 1, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes improving the accuracy of the direction of arrival estimate by determining a quality level for the received signal.

7. The method of claim 6, wherein the quality level is based on properties of the received signal, the quality level further being displayed on a user interface in the wireless communication device.

8. The method of claim 1, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes power management.

9. The method of claim 1, wherein the direction of arrival estimate determination is disabled when the one or more sensors detect that the wireless communication device is stationary.

10. The method of claim 1, wherein the wireless communication device resumes the direction of arrival estimate determination when the one or more sensors detect movement.

11. The method of claim 1, wherein a change of state detected by the one or more sensors triggers the sending of a wireless message to another wireless communication device.

12. The method of claim 1, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes disabling direction of arrival estimate determination when the wireless communication device is not in an acceptable orientation and/or is moving too fast to provide an accurate direction of arrival estimate.

13. The method of claim 1, wherein the wireless communication device enters a corrective or compensatory mode when the one or more sensors detect that that the wireless communication device is not in an acceptable orientation and/or is moving too fast to provide an accurate direction of arrival estimate.

14. A wireless communication device, comprising:

sensors for sensing information related to a state and/or alignment of the wireless communication device;

a controller for configuring the wireless communication device based on the information sensed by the one or more sensors; and

a receiver for receiving a signal used by the controller in determining a direction of arrival estimate, wherein sensed conditions relating to the state and/or alignment of the wireless communication device are utilized to affect the behavior of the wireless communication device while determining the direction of arrival estimate;

said controller performing power management that disables the direction of arrival estimate determination when one or more sensors detect that the wireless communication device is stationary

15. The device of claim 14, wherein the one or more sensors include at least position sensors enabled to indicate the relative orientation of at least one section of the wireless communication device to another section of the wireless communication device.

16. The device of claim 14, wherein the one or more sensors include at least motion sensors enabled to determine when the wireless communication device is being moved.

17. The device of claim 14, wherein a direction of arrival estimate includes determining the direction of arrival of the signal using an array of directional antennas coupled to the wireless communication device, and further indicating the relative direction towards the source of the signal on a user interface in the wireless communication device.

18. The device of claim 17, wherein configuring the wireless communication device based on the information sensed by the one or more sensors includes selecting at least a direction of arrival application program, antenna calibration vectors for the antenna array and a display mode for the user interface.

19. The device of claim 14, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes improving the accuracy of the direction of arrival estimate by determining a quality level for the received, the quality level further being displayed on a user interface in the wireless communication device.

20. The device of claim 14, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes power management that disables the direction of arrival estimate determination when one or more sensors detect that the wireless communication device is stationary.

21. The device of claim 14, wherein a change of state detected by the one or more sensors triggers the sending of a wireless message to another wireless communication device.

22. The device of claim 14, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes:

disabling direction of arrival estimate determination when the wireless communication device is not in an acceptable orientation and/or is moving too fast to provide an accurate direction of arrival estimate;

the direction of arrival estimate being disabled until an acceptable orientation and/or speed is realized, or a corrective or compensatory mode is set, in the wireless communication device.

23. A computer program product, comprising:

a computer usable medium having computer readable program code embodied in said medium for direction finding using a wireless communication device;

a computer readable program code in the computer usable medium, for sensing, using one or more sensors in a wireless communication device, information related to a state and/or alignment of the wireless communication device;

a computer readable program code in the computer usable medium, for configuring the wireless communication device based on the information sensed by the one or more sensors; and

a computer readable program code in the computer usable medium, for determining a direction of arrival estimate of a received signal in the wireless communication device, wherein sensed conditions relating to the state and/or alignment of the wireless communication device are utilized to affect the behavior of the wireless communication device while determining the direction of arrival estimate; and

a computer readable program code in the computer usable medium, for performing power management that disables the direction of arrival estimate determination when one or more sensors detect that the wireless communication device is stationary.

24. The computer program product of claim 23, wherein the one or more sensors include at least position sensors enabled to indicate the relative orientation of at least one section of the wireless communication device to another section of the wireless communication device.

25. The computer program product of claim 23, wherein the one or more sensors include at least motion sensors enabled to determine when the wireless communication device is being moved.

26. The computer program product of claim 23, wherein a direction of arrival estimate includes determining the direction of arrival of the signal using an array of directional antennas coupled to the wireless communication device, and further indicating the relative direction towards the source of the signal on a user interface in the wireless communication device.

27. The computer program product of claim 26, wherein configuring the wireless communication device based on the information sensed by the one or more sensors includes selecting at least a direction of arrival application program, antenna calibration vectors for the antenna array and a display mode for the user interface.

28. The computer program product of claim 23, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes improving the accuracy of the direction of arrival estimate by determining a quality level for the received signal.

29. The computer program product of claim 28, wherein the quality level is based on properties of the received signal, the quality level further being displayed on a user interface in the wireless communication device.

30. The computer program product of claim 23, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes power management.

31. The computer program product of claim 23, wherein the direction of arrival estimate determination is disabled when the one or more sensors detect that the wireless communication device is stationary.

32. The computer program product of claim 23, wherein the wireless communication device resumes the direction of arrival estimate determination when the one or more sensors detect movement.

33. The computer program product of claim 23, wherein a change of state detected by the one or more sensors triggers the sending of a wireless message to another wireless communication device.

34. The computer program product of claim 23, wherein affecting the behavior of the wireless communication device while determining the direction of arrival estimate includes disabling direction of arrival estimate determination when the wireless device is not in an acceptable orientation and/or is moving too fast to provide an accurate direction of arrival estimate.

35. The computer program product of claim 23, wherein the wireless communication device enters a corrective or compensatory mode when the one or more sensors detect that that the device is not in an acceptable orientation and/or is moving too fast to provide an accurate direction of arrival estimate.