Guided Wave Communication Interference Cancellation

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Solution Overview

Problem

Current wireless communication systems face challenges in providing high bandwidth and efficient data transmission, especially with the increasing demand for mobile data and reliance on broadband services, as they require additional infrastructure and complex electrical circuits for signal propagation.

Innovation Solution

A guided wave communication system that utilizes electromagnetic waves bound to transmission media such as wires or dielectric materials, allowing for data transmission without the need for an electrical return path, using couplers and transceivers to launch and receive guided waves along the surface or within these media, enabling efficient data transfer over long distances with reduced loss.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If traditional wireless communication systems are used to provide high bandwidth, then additional infrastructure and complex electrical circuits are required for signal propagation

Engineering Contradiction:

Improvebandwidth capabilityVSAvoidelectrical circuits

Core Design Contradiction:

PowerVSDevice complexity

Solution Approach 1:

The patent replaces traditional electrical signal propagation through complex electrical circuits with electromagnetic wave propagation along transmission media. The system uses couplers to launch guided electromagnetic waves along wires or dielectric materials, eliminating the need for return paths and complex circuitry while maintaining high bandwidth capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces transmission media (wires, dielectric materials) as intermediaries to carry electromagnetic waves. These media serve as the propagation channel, replacing the need for complex electrical circuits and return paths, thereby simplifying the overall system while enabling high bandwidth transmission.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If traditional electrical circuits are used for signal propagation, then return paths are required which increase system complexity

Engineering Contradiction:

Improvesignal propagationVSAvoidreturn paths

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates the return path requirement from traditional electrical circuit signal propagation. By using electromagnetic wave propagation along transmission media with couplers, the system achieves reliable signal transmission without requiring return paths, thereby reducing system complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

3Loss of energy

If guided wave propagation is used, then propagation loss is reduced and long distance transmission is enabled

Engineering Contradiction:

Improvepropagation lossVSAvoidcouplers and transceivers

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent changes the propagation mode from traditional electrical signals to guided electromagnetic waves. This parameter change enables long distance transmission with reduced propagation loss by confining the electromagnetic energy along the transmission media, although it introduces the need for couplers and transceivers to interface with the guided waves.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This system provides high-bandwidth data transmission with reduced propagation loss and eliminates the need for complex electrical circuits, allowing for efficient data transfer over long distances using guided electromagnetic waves along transmission media.

Implementation Method 1

guided electromagnetic waves that propagate along an outer surface of a transmission medium

Methodology Applied

Scientific EffectGuided electromagnetic wave propagation: Waveguide

Implementation Method 2

A coupler may be used to couple an electromagnetic wave to the transmission medium such that the electromagnetic wave is converted to a guided wave

Methodology Applied

Scientific EffectElectromagnetic coupling: Electromagnetic Induction

Data Source

PatentUS10312952B2Guided wave communication system with interference cancellation and methods for use therewith

Publication Date: 2019.06.04 AT&T INTELLECTUAL PROPERTY I L P

AI summary

In accordance with one or more embodiments, a transmission device includes a receiver configured to receive an interfering signal via an antenna. A transmitter is configured to generate first electromagnetic signals conveying first data. A coupler is configured to generate first guided electromagnetic waves in response to combined electromagnetic signals, wherein the first guided electromagnetic waves propagate, without requiring an electrical return path, along a surface of a transmission medium of a distributed antenna system. A cancellation circuit is configured to generate the combined electromagnetic signals, based on the interfering signal and the first electromagnetic signals, wherein the combined electromagnetic signals mitigate interference by the interfering signal with the first guided electromagnetic waves.