Transmission device with impairment compensation and methods for use therewith

• US 10,355,790 B2
• Filed: 01/02/2019
• Issued: 07/16/2019
• Est. Priority Date: 10/21/2014
• 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: Barzegar, Farhad, Gerszberg, Irwin, Bennett, Robert, Henry, Paul Shala
• Primary Examiner(s): Aghdam, Freshteh N
• Application Number:
  US16/238,024
• Publication Number:
  US 20190140751A1
• Time in Patent Office: 195 Days
• CPC Class Codes: H01P 5/00 Coupling devices of the waveguide type
• CPC Class Codes: H01P 5/02 with invariable factor of coupling H01P5/12 takes precedence choke joints H01P1/04, H01P1/06
• CPC Class Codes: H04B 15/02 Reducing interference from electric apparatus by means located at or near the interfering apparatus
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 3/546 Combination of signalling, telemetering, protection circuits for remote indication of supply or distribution network condition H02J13/00

Abstract

Aspects of the subject disclosure may include, for example, a waveguide system that includes a transmission device having a coupler positioned with respect to a transmission medium to facilitate transmission or reception of electromagnetic waves that transport communications data. The electromagnetic waves propagate along an outer surface of the transmission medium. A training controller detects an impairment on the transmission medium adverse to the transmission or reception of the electromagnetic waves and adjusts the electromagnetic waves to reduce the effects of the impairment on the transmission medium. Other embodiments are disclosed.

Claims

1. A waveguide system, comprising:

a transmitter configures to generate a first electromagnetic wave that conveys data;

a coupler configured to guide the first electromagnetic wave to a junction along an outer surface of a transmission medium, the first electromagnetic wave inducing a second, different electromagnetic wave that propagates along the transmission medium via a combination of wave modes without requiring an electrical return path, the combination of the wave modes forming a field strength envelope that varies as a time stationary function of a longitudinal displacement along the transmission medium from the junction.

2. The waveguide system of claim 1, further comprising:

a training controller configured to;

detect an impairment on the transmission medium that is adverse to the propagation of the second electromagnetic wave, the impairment having a location corresponding to at least one of;

a position on the at least a portion of the outer surface of the transmission medium or an azimuthal orientation on the at least the portion of the outer surface of the transmission medium; and

adjust the second electromagnetic wave to reduce a field strength of the second electromagnetic wave at the location of the impairment.

3. The waveguide system of claim 2, wherein the training controller adjusts the second electromagnetic wave by adjusting at least one carrier frequency of the second electromagnetic wave based on feedback data received from at least one remote transmission device coupled to receive the second electromagnetic wave.

4. The waveguide system of claim 3, wherein the training controller coordinates the adjusting of the at least one carrier frequency of the second electromagnetic wave with the at least one remote transmission device coupled to receive the second electromagnetic wave.

5. The waveguide system of claim 2, further comprising a sensor that facilitates detection of the impairment by the training controller.

6. The waveguide system of claim 2, wherein the impairment on the at least the portion of the transmission medium is detected based on transmission of electromagnetic wave test signals on the transmission medium.

7. The waveguide system of claim 2, wherein the location that corresponds to the impairment on the at least the portion of the transmission medium, includes a displacement and an azimuthal orientation.

8. The waveguide system of claim 2, wherein the impairment on the at least the portion of the transmission medium is detected based on detecting an absence of acknowledgement data from at least one remote transmission device.

9. The waveguide system of claim 1, wherein the transmission medium comprises a power line of a power grid for distribution of electric power.

10. The waveguide system of claim 1, wherein the transmission medium comprises a dielectric member and the transmission medium facilitates wireless network connectivity via an antenna.

11. A method comprising:

generating a first electromagnetic wave that conveys data;

guiding, via a coupler, the first electromagnetic wave to a junction along an outer surface of a transmission medium, the first electromagnetic wave inducing a second, different electromagnetic wave that propagates along the transmission medium via a combination of wave modes without requiring an electrical return path, the combination of the wave modes forming a field strength envelope that varies as a time stationary function of a longitudinal displacement along the transmission medium from the junction.

12. The method of claim 11, further comprising:

detecting an impairment on the transmission medium that is adverse to the transmission or reception of the second electromagnetic wave;

adjusting the second electromagnetic wave to reduce an adverse effect of the impairment, wherein the adjusting the second electromagnetic wave includes reducing a field strength of the second electromagnetic wave at a location of the impairment.

13. The method of claim 12, wherein the adjusting the second electromagnetic wave includes placing a local minimum of the field strength envelope in a location that corresponds to a position of the impairment on the transmission medium.

14. The method of claim 12, further comprising:

coordinating an adjusting of at least one carrier frequency of the second electromagnetic wave with at least one remote transmission device coupled to receive the second electromagnetic wave.

15. The method of claim 12, further comprising:

facilitating the detecting of the impairment via a sensor.

16. The method of claim 12, wherein the impairment on the transmission medium is detected based on transmitting electromagnetic wave test signals on the transmission medium.

17. The method of claim 12, wherein the impairment on the transmission medium is detected based on detecting an absence of acknowledgement data from at least one remote transmission device.

18. A waveguide system, comprising:

means for generating a first electromagnetic wave that conveys data;

means for guiding the first electromagnetic wave to a junction along an outer surface of a transmission medium, the first electromagnetic wave inducing a second, different electromagnetic wave that propagates along the transmission medium via a combination of wave modes without requiring an electrical return path, the combination of the wave modes forming a field strength envelope that varies as a time stationary function of a longitudinal displacement along the transmission medium from the junction.

19. The waveguide system of claim 18, wherein the transmission medium comprises a power line of a power grid for distribution of electric power.

20. The waveguide system of claim 18, wherein the transmission medium comprises a dielectric member and the transmission medium facilitates wireless network connectivity via an antenna.