APPARATUS AND METHODS FOR GENERATING NON-INTERFERING ELECTROMAGNETIC WAVES ON AN INSULATED TRANSMISSION MEDIUM

• US 20170033954A1
• Filed: 10/14/2016
• Published: 02/02/2017
• 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, WILLIS, THOMAS M. III, BENNETT, ROBERT, BARZEGAR, FARHAD, GERSZBERG, IRWIN, BARNICKEL, DONALD J.
• Granted Patent: US 10,320,586 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10
• CPC Class Codes: H04L 12/6418 Hybrid transport

Abstract

Aspects of the subject disclosure may include, receiving a plurality of communication signals, and generating, according to the plurality of communication signals, signals that induce a plurality of electromagnetic waves bound at least in part to a dielectric material. Each electromagnetic wave of the plurality of electromagnetic waves conveys at least one communication signal of the plurality of communication signals, and the plurality of electromagnetic waves has a multiplexing configuration that reduces an interference between the plurality of electromagnetic waves. Other embodiments are disclosed.

Claims

1. A method, comprising:

receiving a plurality of communication signals; and

generating, by a transmitting device according to the plurality of communication signals, wireless signals to induce a plurality of electromagnetic waves bound at least in part to an insulated transmission medium,

wherein the plurality of electromagnetic waves propagate along the insulated transmission medium without an electrical return path,

wherein each electromagnetic wave of the plurality of electromagnetic waves conveys at least one communication signal of the plurality of communication signals,

wherein the plurality of electromagnetic waves have a signal multiplexing configuration that reduces interference between the plurality of electromagnetic waves and enables a receiving device to retrieve from each electromagnetic wave of the plurality of electromagnetic waves the at least one communication signal,

wherein the signaling multiplexing configuration comprises a wave mode multiplexing configuration, a frequency division multiplexing configuration, or a combination thereof, and

wherein the wave mode multiplexing configuration comprises configuring at least one of the plurality of electromagnetic waves according to a hybrid wave mode.

2. The method of claim 1, wherein the hybrid wave mode comprises an HE11 wave mode.

3. The method of claim 1, wherein the wave mode multiplexing configuration comprises configuring a first electromagnetic wave of the plurality of electromagnetic waves according to a first hybrid wave mode.

4. The method of claim 3, wherein the wave mode multiplexing configuration further comprises configuring a second electromagnetic wave of the plurality of electromagnetic waves according to a second hybrid wave mode.

5. The method of claim 4, wherein the first hybrid wave mode has a first target polarization, and wherein the second hybrid wave mode has a second target polarization.

6. The method of claim 5, wherein the first target polarization and the second target polarization are at least substantially orthogonal.

7. The method of claim 2, wherein the wave mode multiplexing configuration comprises configuring at least one of the plurality of electromagnetic waves according to a transverse magnetic wave mode.

8. The method of claim 1, wherein at least one of the plurality of electromagnetic waves is configured according to a hybrid wave mode having a cutoff frequency above 0 Hertz.

9. The method of claim 1, wherein at least one of the plurality of electromagnetic waves is configured according to a high order wave mode.

10. The method of claim 1, further comprising:

detecting an obstruction causing propagation losses affecting at least one of the plurality of electromagnetic waves; and

adjusting the signal multiplexing configuration of the plurality of electromagnetic waves to generate an updated plurality of electromagnetic waves that reduces the propagation losses affecting the at least one of the plurality of electromagnetic waves.

11. The method of claim 10, wherein the adjusting the signal multiplexing configuration comprises adjusting a wave mode division multiplexing configuration, adjusting a frequency division multiplexing configuration, or a combination thereof.

12. The method of claim 10, wherein the obstruction comprises water accumulated on an outer surface of the insulated transmission medium.

13. The method of claim 1, wherein the insulated transmission medium comprises an insulated conductor.

14. A launcher, comprising:

a generator; and

a circuit coupled to the generator,

wherein the circuit performs operations including;

receiving a plurality of communication signals; and

generating, according to the plurality of communication signals, signals that induce a plurality of electromagnetic waves bound at least in part to a dielectric layer of a transmission medium,

wherein each electromagnetic wave of the plurality of electromagnetic waves conveys at least one communication signal of the plurality of communication signals,

wherein the plurality of electromagnetic waves has a signal multiplexing configuration that reduces interference between the plurality of electromagnetic waves,

wherein the signal multiplexing configuration comprises a wave mode multiplexing configuration, a frequency division multiplexing configuration, or a combination thereof, and

wherein the wave mode multiplexing configuration comprises configuring at least one of the plurality of electromagnetic waves according to a hybrid wave mode.

15. The launcher of claim 14, wherein the hybrid wave mode comprises an HE11 wave mode.

16. The launcher of claim 14, wherein the wave mode multiplexing configuration comprises configuring a first electromagnetic wave of the plurality of electromagnetic waves according to a first hybrid wave mode, and a second electromagnetic wave of the plurality of electromagnetic waves according to a second hybrid wave mode.

17. The launcher of claim 14, wherein the wave mode multiplexing configuration comprises configuring the plurality of electromagnetic waves according to substantially orthogonal wave modes.

18. A device, comprising:

means for receiving a plurality of communication signals; and

means for generating, according to the plurality of communication signals, signals that induce a plurality of electromagnetic waves bound at least in part to a dielectric material,

wherein each electromagnetic wave of the plurality of electromagnetic waves conveys at least one communication signal of the plurality of communication signals,

wherein the plurality of electromagnetic waves has a multiplexing configuration that reduces interference between the plurality of electromagnetic waves,

wherein the multiplexing configuration comprises a wave mode multiplexing configuration, a frequency division multiplexing configuration, or a combination thereof, and

wherein the wave mode multiplexing configuration comprises configuring the plurality of electromagnetic waves according to substantially orthogonal wave modes.

19. The device of claim 18, wherein at least one of the orthogonal wave modes comprises a hybrid wave mode.

20. The device of claim 18, wherein the wave mode multiplexing configuration comprises configuring a first electromagnetic wave of the plurality of electromagnetic waves according to a first hybrid wave mode, and a second electromagnetic wave of the plurality of electromagnetic waves according to a second hybrid wave mode.