Wi-Fi Network Coding for High-Reliability, Low-Latency Delivery

Solution Overview

Problem

Existing Wi-Fi systems rely on retransmissions or duplicate transmissions for reliable data delivery, which can lead to increased latency and decreased spectral efficiency, making them unsuitable for high-reliability applications like augmented reality and virtual reality.

Innovation Solution

Implementing network coding techniques in Wi-Fi systems, specifically using linear packet erasure codes and forward error correction codes to encode data packets, allowing for high reliability without increased latency and improving spectral efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If retransmissions or duplicate transmissions are used for reliable data delivery, then reliability is improved, but latency increases and spectral efficiency decreases

Engineering Contradiction:

Improvedata delivery reliabilityVSAvoidlatency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary encoding of data packets using network coding techniques (linear packet erasure codes, forward error correction codes) before transmission. This pre-encoding creates redundant information that enables recovery from packet losses without requiring retransmissions, thus reducing latency while maintaining reliability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention changes the encoding parameter from traditional redundancy duplication to network coding mathematical transformations. By applying linear combinations of packets through coding matrices, the system achieves better reliability with fewer transmissions, improving both latency and spectral efficiency

Inventive Principle:

Principle #35Parameter changes

2Reliability

If retransmissions or duplicate transmissions are used for reliable data delivery, then reliability is improved, but spectral efficiency decreases

Engineering Contradiction:

Improvedata delivery reliabilityVSAvoidspectral efficiency

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system performs preliminary encoding of data packets using network coding techniques (linear packet erasure codes, forward error correction codes) before transmission. This pre-encoding creates redundant information that enables recovery from packet losses without requiring retransmissions, thus reducing latency while maintaining reliability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention changes the encoding parameter from traditional redundancy duplication to network coding mathematical transformations. By applying linear combinations of packets through coding matrices, the system achieves better reliability with fewer transmissions, improving both latency and spectral efficiency

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4195547B1Ultra-high reliable wi-fi with network coding

Publication Date: 2025.09.10 INTEL CORP

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AI summary

This disclosure describes systems, methods, and devices related to a communication network with network coding. A device configured for operation in a communication network is configured to: generate a plurality of network coded blocks based on a plurality of data blocks; generate an aggregated frame, each subframe of the aggregated frame including a respective one of the plurality of network coded blocks or the plurality of data blocks, wherein each subframe of the aggregated frame includes a verification code; and cause to send the aggregated frame.