DSL Diplexer Frequency Band Segmentation for Interference Reduction

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Solution Overview

Problem

Existing DSL technologies face challenges in efficiently conveying data across a single line using multiple DSL systems without interference and optimizing frequency bands for effective data transmission.

Innovation Solution

A device comprising a first DSL system operating in a first frequency band and a second DSL system operating in a second frequency band, connected via a filter unit, allowing for the simultaneous transmission of data using a diplexer to separate and combine signals, enabling the use of multiple DSL technologies over a single line without overlapping frequency bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple DSL systems operate on a single line using different frequency bands, then data transmission capacity is improved, but signal interference and frequency band optimization become problematic

Engineering Contradiction:

Improvedata transmission capacityVSAvoidsignal interference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the frequency spectrum into distinct bands, assigning each DSL system a specific frequency range. The filter unit divides the combined signal into separate frequency bands, allowing multiple DSL systems to operate simultaneously on a single line without interference, thereby increasing data transmission capacity while preventing signal interference.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The filter unit acts as an intermediary between multiple DSL systems operating on different frequency bands. It receives combined signals from multiple DSL systems, separates them by frequency, and routes them to the appropriate outputs, enabling multiple systems to coexist on a single line without mutual interference.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple DSL systems are combined on a single line, then line utilization is improved, but device complexity increases due to filtering requirements

Engineering Contradiction:

Improveline utilizationVSAvoidfiltering unit complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The filter unit is designed as a universal component that can handle multiple DSL systems operating on different frequency bands simultaneously. By implementing a multi-functional filtering architecture, the device achieves high line utilization across various DSL standards while managing complexity through a unified filtering approach rather than separate filters for each system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 solution enables efficient multiplexing of data from multiple DSL systems across a single line, reducing interference and optimizing frequency usage, thereby enhancing data transmission capabilities and supporting various DSL standards and services.

Implementation Method 1

a first DSL system operating in a first frequency band; a second DSL system operating in a second frequency band; and a filter unit connected to a line and to each of the first DSL system and the second DSL system

Methodology Applied

Scientific EffectFrequency division multiplexing:

Data Source

PatentEP2942934B1Data processing in a digital subscriber line environment

Publication Date: 2021.03.31 ADTRAN INC

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AI summary

A device is suggested comprising a first DSL system operating in a first frequency band, a second DSL system operating in a second frequency band and a filter unit connected to a line and to each of the first DSL system and the second DSL system.