WIRELESS COMMUNICATIONS DEVICE WITH IMPROVED ANTENNA ADAPTIVITY

• US 20090156235A1
• Filed: 02/10/2006
• Published: 06/18/2009
• Est. Priority Date: 02/10/2006
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Petersson, Sven Oscar, Johansson, Martin Nils, Johannisson, Björn Gunnar, Asplund, Henrik, Medbo, Jonas, Berg, Jan-Erik
• Application Number:
  US12/278,457
• Publication Number:
  US 20090156235A1
• Time in Patent Office: Days
• US Class Current: 455/456.600
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/086 using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity

Abstract

The invention discloses a wireless telecommunications device intended to communicate with an access point, such as a base station, in a wireless telecommunications system. The device comprises at least a first radio chain and at least a first and a second antenna, which antennas each have a certain radiation pattern, and which are used for receiving and transmitting information to and from the base station. The device includes a motion sensor for giving information on the spatial orientation of the device, and the device additionally includes means for utilizing said orientation information in order to control the total radiation pattern in the device'"'"'s communication with the base station by controlling the phase and/or amplitude of signals associated with said first and second antennas.

Claims

1-8. -8. (canceled)

9. A device adapted to communicate with a base station, the device having at least a first radio chain and at least a first and a second antenna, each antenna having a certain radiation pattern, and adapted to receive and transmit information to and from the base station, said device, comprising:

a motion sensor for providing information on the spatial orientation of the device;

means for utilizing said orientation information in order to control the total radiation pattern in the device'"'"'s communication with the base station by controlling the phase and/or amplitude of signals associated with said first and second antennas.

10. The device of claim 9, in which the first antenna has a first polarization and the second antenna has a second polarization, and in which device, the total radiation pattern is controlled by using only one of the antennas, by means of which only one polarization is used, said polarization being adapted according to information regarding the polarization state of the base station'"'"'s antenna or antennas.

12. The device of claim 10, in which the information regarding the polarization conditions at the base station'"'"'s antenna or antennas is information communicated from the base station to users in the system.

13. The device of claim 10, in which the information regarding the polarization conditions at the base station'"'"'s antenna or antennas is a priori information.

14. The device of claim 9, in which the first antenna has a first polarization and the second antenna has a second polarization different from the first polarization, in which device the total radiation pattern is controlled by combining the radiation patterns of the first and second antennas to obtain a third resulting polarization, said third polarization being adapted according to information regarding the polarization conditions at the base station'"'"'s antenna or antennas.

15. The device of claim 14, in which the information regarding the polarization conditions at the base station'"'"'s antenna or antennas is information communicated from the base station to users in the system.

16. The device of claim 14, in which the information regarding the polarization conditions at the base station'"'"'s antenna or antennas is a priori information.

17. The device of claim 9, in which the first antenna has a first polarization and the second antenna has a second polarization, and in which device the total radiation pattern is controlled by using only one of the antennas, by means of which only one polarization is used, said polarization being adapted according to information regarding the polarization of the signals from the base station when impinging on the device.

18. The device of claim 9, in which the first antenna has a first polarization and the second antenna has a second polarization different from the first polarization, in which device the total radiation pattern is controlled by combining the radiation patterns of the first second antennas to obtain a third resulting polarization, said third polarization being adapted according to information regarding the polarization of the signals from the base station when impinging on the device.

19. The device of claim 9, in which the first and the second antennas have the same polarization, and in which device the total radiation pattern is controlled by combining the radiation patterns of the two antennas to form a total radiation pattern with increased directivity in a desired direction and/or elevation, said increased directivity being adapted to the position of the base station antenna or antennas, said increased directivity being as compared to one of the antennas of the device.