Dual Polarization Wireless Capacity and Interference Management

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Solution Overview

Problem

Wireless communication channels in cellular environments face interference due to propagation anomalies, limiting the effectiveness of dual polarization transmission and reception, and there is a need for convenient power delivery to devices without physical connections, as well as ensuring safety for flying objects in populated areas.

Innovation Solution

Implementing dual polarization transmission and reception methods in cellular environments, where signals are transmitted over respective polarizations concurrently in time and co-frequency, using adaptive techniques to reduce interference, and developing systems for wireless power transfer and trajectory control of flying objects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If dual polarization transmission and reception are implemented in cellular environments, then communication capacity is increased, but interference from propagation anomalies worsens

Engineering Contradiction:

Improvecommunication capacityVSAvoidinterference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the communication channel into multiple polarization components (vertical and horizontal polarizations), treating each as a separate transmission path. This segmentation allows independent processing and interference management for each polarization component, enabling the system to achieve diversity gain while managing interference through selective combining techniques.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements feedback mechanisms where the receiver measures interference levels and channel conditions for each polarization component, then feeds this information back to the transmitter. This enables adaptive modulation and coding adjustments for each polarization, allowing the system to optimize performance by reducing data rates or changing modulation schemes when interference is detected on specific polarization paths.

Inventive Principle:

Principle #23Feedback

2Productivity

If signals are transmitted concurrently in time and co-frequency over respective polarizations, then wireless capacity is increased, but vulnerability to interference increases

Engineering Contradiction:

Improvewireless capacityVSAvoidsignal reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent merges multiple polarization signals at the receiver through combining techniques such as maximal ratio combining or equal gain combining. By merging the signals from different polarization paths, the system achieves signal diversity that improves reliability while maintaining the high capacity benefits of concurrent transmission. The combining process allows constructive addition of signal components while averaging out interference effects.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a composite transmission medium by utilizing both vertical and horizontal polarization components as separate 'channels' within the same physical medium (electromagnetic spectrum). This composite approach allows the system to treat polarizations as distinct transmission paths that can be independently managed, processed, and combined, effectively creating a multi-path transmission system that improves both capacity and reliability.

Inventive Principle:

Principle #40Composite materials

3Reliability

If adaptive techniques are used to reduce interference, then signal quality is improved, but device complexity increases

Engineering Contradiction:

Improvesignal qualityVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements partial adaptive processing by applying adaptive techniques selectively rather than uniformly across all signals. For example, adaptive interference cancellation is applied only when interference thresholds are exceeded, or adaptive modulation is adjusted based on predefined quality levels. This partial action approach maintains signal quality through targeted adaptation while avoiding the full computational burden of continuous adaptive processing on all signal parameters.

Inventive Principle:

Principle #16Partial or excessive action

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

Enhances communication capacity and reliability by minimizing interference, provides convenient power delivery to devices, and ensures safety by controlling the trajectories of flying objects in populated areas.

Implementation Method 1

transmitting by the transmitter said first and second signals over respective first and second polarizations

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS10804998B2Systems/methods of providing increased wireless capacity, vehicular safety, electrical power wirelessly, and device control responsive to geographic position

Publication Date: 2020.10.13 ENK WIRELESS INC

AI summary

Embodiments of inventive concepts are provided wherein a mobile device, such as a smartphone, may transmit information to a base station, either directly or via auxiliary/slave devices, using first and second spatial polarizations, in order to increase spectral efficiency. Pre-processing at the mobile device and/or post-processing at the base station may be used to reduce cross-polarization interference.