NON-LINE OF SIGHT WIRELESS COMMUNICATION SYSTEM AND METHOD

• US 20160164586A1
• Filed: 02/01/2016
• Published: 06/09/2016
• Est. Priority Date: 04/12/2012
• Status: Active Grant

• Current Assignee: Tarana Wireless, Incorporated
• Original Assignee: Tarana Wireless, Incorporated
• Inventors: Branlund, Dale
• Granted Patent: US 10,432,275 B2
• Time in Patent Office: Days
• 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 7/0617 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: H04J 1/00 Frequency-division multiplex systems H04J14/00 takes precedence
• CPC Class Codes: H04J 14/00 Optical multiplex systems

Abstract

A non-line of sight backhaul system and method are described that provides self-alignment of the antennas beams of the wireless radios of the system, that provides robust operation in licensed and unlicensed frequency bands, that facilitates the use of a reduced number of frequency channels from M to 1 and that enables operation in a non-line of sight (NLOS) propagation environment.

Claims

1. A wireless communication system, comprising:

a communication link having a first end and a second end that communicate over reciprocal radio frequency channels, the communication link having at least one radio at each end of the communication link, each radio having a transmit beamformer and a receive beamformer; and

at least one transmit beamformer at each end of the communication link and at least one receive beamformer at each end of the communication link that exchange data with each other to optimize and equalize a transmission of data over the communication link.

2. The system of claim 1, wherein the at least one transmit beamformer at the first end of the communication link generates a beam pattern and the at least one receive beamformer at the second end of the communication link receives the beam pattern to optimize the transmission of data over the communication link.

3. The system of claim 2, wherein the at least one transmit beamformer at the second end of the communication link transmits a beam pattern, based on one or more receiver beamforming weights, to the at least one receive beamformer at the first end of the communication link.

4. The system of claim 3, wherein the at least one transmit beamformer at the first end of the communication link generates a beam pattern based on one or more receiver beamforming weights to the at least one receive beamformer at the second end of the communication link.

5. The system of claim 1, wherein the radio at the first end of the communication link is a concentrating radio and the radio at the second end of the communication link is a terminating radio.

6. The system of claim 5, wherein the transmit beamformer of the concentration radio generates a download data signal and the receiver beamformer of the concentration radio receives an upload data signal.

7. The system of claim 1, wherein the beamformers optimize the communication link despite interference in the communication link.

8. The system of claim 1, wherein the beamformers optimize the communication link despite multipath in the communication link.

9. A wireless communication method, comprising:

providing a communication link having a first end and a second end, the communication link having at least one radio at each end of the communication link, each radio having a transmit beamformer and a receive beamformer; and

optimizing the communication link using at least one transmit beamformer at each end of the communication link and at least one receive beamformer at each end of the communication link by exchanging data with each other.

10. The method of claim 9, wherein optimizing the communication link further comprises generating a bean pattern by the at least one transmit beamformer at the first end of the communication link and receiving the beam pattern by the at least one receive beamformer at the second end of the communication link to optimize the transmission of data over the communication link.

11. The method of claim 10, wherein optimizing the communication link further comprises generating a beam pattern at the at least one transmit beamformer at the second end of the communication link based on one or more receiver beamforming weights and receiving the beam pattern at the at least one receive beamformer at the first end of the communication link.

12. The method of claim 11, wherein optimizing the communication link further comprises generating a beam pattern from the at least one transmit beamformer at the first end of the communication link based on one or more receiver beamforming weights and receiving the beam pattern at the at least one receive beamformer at the second end of the communication link.

13. The method of claim 9, wherein the radio at the first end of the communication link is a concentrating radio and the radio at the second end of the communication link is a terminating radio.

14. The method of claim 13, wherein the transmit beamformer of the concentration radio generates a download data signal and the receiver beamformer of the concentration radio receives an upload data signal.

15. The method of claim 9, wherein optimizing the communication link further comprises optimizing the communication link despite interference in the communication link.

16. The method of claim 9, wherein optimizing the communication link further comprises optimizing the communication link despite multipath in the communication link.