DSL Interleaver Layout for Impulse Noise Error Confinement

Solution Overview

Problem

Existing DSL communication systems face inefficiencies in handling impulse noise, which can lead to corrupted data and increased retransmission requests, overwhelming network servers and resulting in non-corrected errors due to insufficient redundancy and interleaving mechanisms.

Innovation Solution

The implementation of an interleaving redundancy encoder and de-interleaving redundancy decoder system, which includes a pre-interleaver, redundancy encoder, and interleaver at the transmitter, and a de-interleaver, redundancy decoder, and post-deinterleaver at the receiver, to limit the spread of impulse noise corruption across data transmission units by maintaining the order of payload bytes and using redundancy bytes effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional interleaving and redundancy mechanisms are used, then error correction capability is provided, but impulse noise corruption spreads across multiple data transmission units overwhelming network servers

Engineering Contradiction:

Improveerror correction capabilityVSAvoidnetwork server capacity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent segments the interleaving process into two distinct stages: pre-interleaving performed before redundancy encoding, and post-interleaving performed after redundancy encoding. This segmentation allows each interleaving operation to work on different data portions with different purposes, preventing impulse noise from spreading across too many codewords while still providing error correction capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies pre-interleaving as a preliminary action before redundancy encoding. By interleaving the payload data first, the patent ensures that subsequent impulse noise affects scattered bytes rather than consecutive bytes, making the redundancy encoding more effective and reducing the number of codewords that need retransmission.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If more redundancy bytes are added to correct impulse noise, then error correction efficiency improves, but data transmission overhead increases

Engineering Contradiction:

Improveerror correction efficiencyVSAvoiddata transmission overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent segments the interleaving process into two distinct stages: pre-interleaving performed before redundancy encoding, and post-interleaving performed after redundancy encoding. This segmentation allows each interleaving operation to work on different data portions with different purposes, preventing impulse noise from spreading across too many codewords while still providing error correction capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies pre-interleving as a preliminary action before redundancy encoding. By interleaving the payload data first, the patent ensures that subsequent impulse noise affects scattered bytes rather than consecutive bytes, making the redundancy encoding more effective and reducing the number of codewords that need retransmission.

Inventive Principle:

Principle #10Preliminary action

3Device complexity

If conventional single-stage interleaving is used, then device complexity is reduced, but impulse noise corruption cannot be confined to limited data transmission units

Engineering Contradiction:

Improveinterleaving system complexityVSAvoidimpulse noise confinement capability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the interleaving process into two distinct stages: pre-interleaving performed before redundancy encoding, and post-interleaving performed after redundancy encoding. This segmentation allows each interleaving operation to work on different data portions with different purposes, preventing impulse noise from spreading across too many codewords while still providing error correction capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies pre-interleving as a preliminary action before redundancy encoding. By interleaving the payload data first, the patent ensures that subsequent impulse noise affects scattered bytes rather than consecutive bytes, making the redundancy encoding more effective and reducing the number of codewords that need retransmission.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP1995901B1Interleaver apparatus and method

Publication Date: 2017.10.11 LANTIQ BET GMBH & CO KG

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AI summary

One embodimennt of the invention relates to a method of data processing. In the method, an initial data stream is received. A series of bytes having a total byte length is selected from the initial data stream, the series of bytes having a span in the initial data stream that is greater than the total byte length. At least one redundancy byte is calculated based on the series of bytes. An output data stream is transmitted over a transmission medium (406), where the output data stream includes the initial data stream with the at least one redundancy byte therein, and where consecutive bytes in the output data stream have an order that corresponds to an order of consecutive bytes in the initial data stream. Other devices and methods are also described.