METHOD AND APPARATUS FOR ADJUSTING A FIELD OF A SIGNAL TO MITIGATE INTERFERENCE

• US 20180076499A1
• Filed: 11/09/2017
• Published: 03/15/2018
• Est. Priority Date: 07/14/2015
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Henry, Paul Shala, Bennett, Robert, Barzegar, Farhad, Gerszberg, Irwin, Barnickel, Donald J., Willis, III, Thomas M.
• Granted Patent: US 10,230,145 B2
• Time in Patent Office: Days
• CPC Class Codes: G01R 27/32 in circuits having distributed constants , e.g. having very long conductors or involving high frequencies
• CPC Class Codes: H01P 1/222 Waveguide attenuators H01P1/23 takes precedence
• CPC Class Codes: H04B 3/52 Systems for transmission between fixed stations via waveguides
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

Aspects of the subject disclosure may include, for example, a system that performs operations including detecting a signal degradation of guided electromagnetic waves bound to a transmission medium without utilizing an electrical return path, the guided electromagnetic waves having a non-optical frequency range, and adjusting an alignment of at least a portion of fields of the guided electromagnetic waves to mitigate the signal degradation. Other embodiments are disclosed.

Claims

1. A method, comprising:

receiving, by a first waveguide system, electromagnetic waves guided by an outer surface of a transmission medium without requiring an electrical return path;

detecting, by the first waveguide system, an attenuation of the electromagnetic waves; and

coordinating, by the first waveguide system with a second waveguide system, an adjustment of an orientation of at least a portion of electric fields of the electromagnetic waves to mitigate the attenuation.

2. The method of claim 1, wherein the coordinating comprises:

generating, by the first waveguide system, updated electromagnetic waves having an adjusted orientation of at least the portion of electric fields of the electromagnetic waves;

inducing, by the first waveguide system, propagation of the updated electromagnetic waves on the outer surface of the transmission medium; and

receiving, by the first waveguide system, from the second waveguide system a message indicating a quality of the updated electromagnetic waves.

3. The method of claim 2, wherein the quality of the updated electromagnetic waves is based on a signal to noise ratio.

4. The method of claim 2, wherein the message is received by the first waveguide system as a wireless message.

5. The method of claim 2, wherein the message is included in second electromagnetic waves generated by the second waveguide system, the second electromagnetic waves guided by the outer surface of a transmission medium and received by the first waveguide system.

6. The method of claim 1, wherein the coordinating comprises:

receiving, by the first waveguide system, updated electromagnetic waves guided by the outer surface of the transmission medium, the updated electromagnetic waves having an adjusted orientation of at least the portion of electric fields of the electromagnetic waves, and the updated electromagnetic waves being generated by the second waveguide system; and

sending, by the first waveguide system to the second waveguide system, a message indicating a quality of the updated electromagnetic waves.

7. The method of claim 6, wherein the quality of the updated electromagnetic waves is based on a signal to noise ratio.

8. The method of claim 6, wherein the message is sent to the second waveguide system as a wireless message.

9. The method of claim 6, wherein the message is included in second electromagnetic waves generated by the first waveguide system, the second electromagnetic waves guided by the outer surface of a transmission medium and directed to the second waveguide system.

10. The method of claim 1, wherein the coordinating further comprises submitting, by the first waveguide system, a notification message to the second waveguide system of the attenuation detected by the first waveguide system.

11. The method of claim 1, further comprising detecting an object causing the attenuation of the electromagnetic waves.

12. The method of claim 11, wherein the object comprises an accumulation of liquid on the outer surface of the transmission medium.

13. The method of claim 1, wherein the adjustment of the orientation of at least the portion of electric fields of the electromagnetic waves comprises adjusting a polarization of the electric fields of the electromagnetic waves.

14. The method of claim 13, wherein the polarization comprises an alignment of the electric fields of the electromagnetic waves that is approximately transversal to a direction of propagation of the electromagnetic waves.

15. A method, comprising:

transmitting, by a first waveguide system, electromagnetic waves that propagate along an outer surface of a transmission medium without requiring an electrical return path; and

adjusting, by the first waveguide system, an orientation of at least a portion of electric fields of the electromagnetic waves to mitigate an attenuation determined by a second waveguide system.

16. The method of claim 15, comprising receiving, by the first waveguide system from the second waveguide system, a message associated with the attenuation determined by the second waveguide system.

17. The method of claim 16, wherein the message is received by the first waveguide system as a wireless message.

18. A method, comprising:

determining, by a processing system including a processor, a signal degradation of electromagnetic waves propagating along a transmission medium without requiring an electrical return path; and

adjusting, by the processing system, an alignment of at least a portion of electric fields of the electromagnetic waves to mitigate the signal degradation.

19. The method of claim 18, wherein the adjusting the alignment comprises polarizing the electric fields of the electromagnetic waves away from a direction of the propagating of the electromagnetic waves.

20. The method of claim 18, wherein the determining the signal degradation comprises:

determining a signal to noise ratio for the electromagnetic waves; and

determining that the signal to noise ratio does not satisfy a threshold.