Communication system for mobile users using adaptive antenna

• US 20020128044A1
• Filed: 05/15/2001
• Published: 09/12/2002
• Est. Priority Date: 01/19/2001
• Status: Active Grant

• Current Assignee: The DIRECTV Group, Inc. (AT&T, Inc.)
• Original Assignee: The DIRECTV Group, Inc. (AT&T, Inc.)
• Inventors: Chang, Donald C.D., Lim, Wah L., Chang, Ming U.
• Granted Patent: US 8,396,513 B2
• Time in Patent Office: Days
• US Class Current: 455/562.1
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 25/00 Antennas or antenna systems providing at least two radiating patterns arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00
• CPC Class Codes: H01Q 3/2605 Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
• CPC Class Codes: H04B 7/0408 using two or more beams, i.e. beam diversity
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

A communication system has a base station having an adaptive antenna with a plurality of main array antenna elements for generating a plurality of communication beams. The system further includes a gateway station coupled to the base station. The gateway station forms a plurality of beams commands by communicating plurality of a control signals to the base station to form the communication beams.

Claims

1. A communications system comprising:

a base station having an adaptive antenna with a plurality of main array antenna elements for generating a plurality of communication beams; and

a gateway station coupled to said base station, said gateway station forming a plurality of beams commands by communicating a plurality of control signals to the base station to form the communication beams.

2. A communications system as recited in claim 1 wherein said adaptive antenna comprises a plurality of panels comprise the plurality of main array elements.

3. A communications system as recited in claim 1 wherein said base station comprises a plurality of auxiliary elements for canceling interference between the communication beam.

4. A communications system as recited in claim 1 wherein said auxiliary elements are weighted to provide interference canceling.

5. A communications system as recited in claim 1 wherein said gateway station is rf coupled to said base station.

6. A communications system as recited in claim 1 wherein said base station is wireless.

7. A communications system as recited in claim 1 wherein said gateway station is positioned on a stratospheric platform.

8. A communications system as recited in claim 1 wherein said reconfigurable antenna comprises a phased array antenna.

9. A communications system as recited in claim 1 wherein said main array is a modular.

10. A communications system as recited in claim 1 wherein said main array comprises a plurality of modules coupled to a bus.

11. A communications system as recited in claim 1 wherein said bus is coupled to a controller.

12. A communications system as recited in claim 1 further comprising a plurality of users receiving said communications beam.

13. A communications system as recited in claim 1 further comprising a limiter coupled within a feedback path.

14. A communications system as recited in claim 1 further comprising a nulling processor.

15. A communications system as recited in claim 14 wherein said nulling processor comprises an element code despread and a user code despread.

16. A communications system as recited in claim 15 wherein said nulling processor comprises a weighted feedback loop similarly coupled to an output signal.

17. A communications system as recited in claim 15 wherein said nulling processor comprises auxiliary elements coupled to an output signal.

18. A communications system as recited in claim 1 wherein said base station comprises a plurality of summing blocks coupled to said main array element for generating a summed signal, said gateway station comprising an analog-to-digital converter coupled to a noise injection circuit and said summed signal, said summed signal coupled to a demultiplexer and a digital beam forming circuit.

19. A communication system as recited in claim 1 wherein said base station comprises a user code despreading circuit coupled to an element code despreading circuit which is coupled to said main array elements.

20. A communications system comprising:

a plurality of wireless base stations having adaptive antennas with a plurality of main array antenna elements for generating a plurality of communication beams;

a gateway station coupled to said plurality of wireless base stations through a plurality of multiple dynamic links, said gateway station forming a plurality of beams with a plurality of data packets by communicating plurality of a control signals to the base station to form the communication beams using at least one link from a first base station and a second link through a second of the base station.

21. A method of operating a communication system having a gateway station and a plurality base station comprising:

dividing a communication signal into a plurality of multiple dynamic links at the gateway station;

directing the multiple dynamic links to a plurality of base stations; and

coupling the multiple dynamic links through the plurality of base stations.

22. A method as recited in claim 21 further comprising canceling interference between said multiple dynamic links.