IP Library Granted Patent US 7,009,559
Granted Patent B2
US 7,009,559 · App. 10/914,982 · Granted Mar 7, 2006

Method and apparatus for adapting antenna array using received predetermined signal

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Quick Facts
Patent No.
US 7,009,559
App. No.
10/914,982
Granted
Mar 7, 2006
Kind
B2
Abstract

A mobile subscriber unit includes a smart antenna having antenna elements for generating a plurality of antenna beams, and adjustable weight control components connected to the antenna elements for selecting any one of the antenna beam. A transceiver is connected to the smart antenna. A beam selector controller is connected to the transceiver and operates in a coarse adjustment mode by jointly adjusting the weight control components when scanning through the antenna beams, and operates in a fine adjustment mode by independently adjusting the weight control components when one of the scanned antenna beams is selected.

Claims (27)

1. A mobile subscriber unit comprising:

a smart antenna comprising

a plurality of antenna elements for generating a plurality of antenna beams, and

a plurality of adjustable weight control components connected to said plurality of antenna elements for selecting one of the plurality of antenna beams;

a transceiver connected to said smart antenna; and

a beam selector controller connected to said transceiver and operating

in a coarse adjustment mode by jointly adjusting said plurality of weight control components when scanning through the plurality of antenna beams, and

in a fine adjustment mode by independently adjusting said plurality of weight control components when one of the scanned antenna beams is selected.

2. A mobile subscriber unit according to claim 1 wherein each weight control component comprises a phase shifters.

3. A mobile subscriber unit according to claim 1 wherein each weight control component imparts a weight to a signal input thereto and wherein the weight is associated with an amplitude of the signal, a phase of the signal or a combination of the amplitude and the phase of the signal.

4. A mobile subscriber unit according to claim 1 wherein said plurality of antenna elements comprise at least one active element and a plurality of parasitic elements.

5. A mobile subscriber unit according to claim 1 wherein said plurality of adjustable weight control components are adjusted to increase a signal power to interference ratio.

6. A mobile subscriber unit according to claim 1 wherein said plurality of adjustable weight control components are adjusted to reduce a bit error rate.

7. A mobile subscriber unit according to claim 1 wherein said plurality of adjustable weight control components are adjusted to increase a received power.

8. A mobile subscriber unit according to claim 1 wherein the mobile subscriber unit operates in a wireless communication system with a plurality of other mobile subscriber units; and wherein said plurality of adjustable weight control components are adjusted for a signal transmitted to a desired mobile subscriber unit operating in the wireless communication system so that interfering emissions at the other mobile subscriber units not intended to receive the signal are reduced.

9. A mobile subscriber unit according to claim 1 wherein the mobile subscriber unit operates in a wireless communication system with a base station having bi-directional communications capabilities for communicating with a plurality of other mobile subscriber units; and wherein said plurality of adjustable weight control components are adjusted for a signal transmitted so that interfering emissions at the other mobile subscriber units not intended to receive the signal are reduced.

10. A method for operating a mobile subscriber unit comprising a smart antenna comprising a plurality of antenna elements for generating a plurality of antenna beams, and a plurality of adjustable weight control components connected to the plurality of antenna elements for selecting one of the plurality of antenna beams; a transceiver connected to the smart antenna; and a beam selector controller connected to the transceiver, the method comprising:

operating in a coarse adjustment mode by jointly adjusting the plurality of weight control components when scanning through the plurality of antenna beams; and

operating in a fine adjustment mode by independently adjusting the plurality of weight control components to select one of the scanned antenna beams.

11. A method according to claim 10 wherein each weight control component comprises a phase shifters.

12. A method according to claim 10 wherein each weight control component imparts a weight to a signal input thereto and wherein the weight is associated with an amplitude of the signal, a phase of the signal or a combination of the amplitude and the phase of the signal.

13. A method according to claim 10 wherein the plurality of antenna elements comprise at least one active element and a plurality of parasitic elements.

14. A method according to claim 10 wherein the plurality of adjustable weight control components are adjusted to increase a signal power to interference ratio.

15. A method according to claim 10 wherein the plurality of adjustable weight control components are adjusted to reduce a bit error rate.

16. A method according to claim 10 wherein the plurality of adjustable weight control components are adjusted to increase a received power.

17. A method according to claim 10 wherein the mobile subscriber unit operates in a wireless communication system with a plurality of other mobile subscriber units; and wherein the plurality of adjustable weight control components are adjusted for a signal transmitted to a desired mobile subscriber unit operating in the wireless communication system so that interfering emissions at the other mobile subscriber units not intended to receive the signal are reduced.

18. A method according to claim 10 wherein the mobile subscriber unit operates in a wireless communication system with a base station having bi-directional communications capabilities for communicating with a plurality of other mobile subscriber units; and wherein the plurality of adjustable weight control components are adjusted for a signal transmitted so that interfering emissions at the other mobile subscriber units not intended to receive the signal are reduced.