Multi-path Data Transmission for Shadowing Resilience

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Solution Overview

Problem

Current wireless systems for high bit rate video transmission are sensitive to shadowing, leading to disruptions in data transmission, and existing solutions either require fixed apparatuses or are not suitable for high bit rate video streams, resulting in poor quality or increased bandwidth consumption.

Innovation Solution

A method for transmitting data contents via multiple paths by subdividing each content into elementary data groups according to a predetermined pattern of repetition and distributing them across paths based on transmission conditions, allowing for error concealment and optimized bandwidth use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If beamsteering technique by beamforming is used to concentrate emission energy, then transmission efficiency is improved, but sensitivity to shadowing increases

Engineering Contradiction:

Improveemission energy efficiencyVSAvoidsensitivity to shadowing

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent divides the video stream into multiple sub-streams that are transmitted over multiple independent paths simultaneously. This segmentation allows the system to maintain high energy efficiency through directional beamforming on each path while reducing overall sensitivity to shadowing, as not all paths are affected by a single obstacle. The source node segments the data and distributes it across multiple transmission paths, each with its own beamforming configuration.

Inventive Principle:

Principle #1Segmentation

2Reliability

If omnidirectional antenna technique is used to reduce shadowing sensitivity, then shadowing sensitivity is improved, but reception quality deteriorates

Engineering Contradiction:

Improvesensitivity to shadowingVSAvoidreception quality

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent segments the transmission into multiple directional paths, each using beamforming to maintain high reception quality. By distributing data across multiple segmented paths rather than using a single omnidirectional transmission, the system achieves both directional precision and shadowing resilience. Each path maintains focused energy delivery while the collective system benefits from path diversity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a multi-path transmission dimension, where data is distributed across multiple spatial paths simultaneously. This dimensional expansion allows the system to combine the advantages of directional beamforming (high reception quality) with path diversity (shadowing resistance). The receiver combines signals from multiple paths, effectively adding a dimension of spatial diversity to the transmission.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If mesh technique with multiple re-transmissions is used to transmit data through different paths, then shadowing sensitivity is improved, but bandwidth consumption increases

Engineering Contradiction:

Improveshadowing sensitivityVSAvoidbandwidth consumption

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent segments the video stream into multiple sub-streams that are transmitted simultaneously over multiple paths in parallel. This is fundamentally different from the mesh technique's sequential re-transmissions. By dividing the data into segments and transmitting them concurrently across different paths, the system achieves shadowing resistance without the excessive bandwidth consumption associated with repeated re-transmissions of the same data.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent maintains continuous transmission of video data across multiple paths without interruption or repetition. Unlike the mesh technique that relies on re-transmissions for reliability, this system continuously pushes data forward through multiple simultaneous paths. This continuous action eliminates the bandwidth waste of re-transmissions while maintaining reliable delivery through path diversity.

Inventive Principle:

Principle #20Continuity of useful action

4Reliability

If antennas are fixed at high height to avoid shadowing, then shadowing sensitivity is improved, but accessibility to apparatuses deteriorates

Engineering Contradiction:

Improvesensitivity to shadowingVSAvoidaccessibility to apparatuses

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent segments the transmission into multiple paths that can be established at various locations and heights. This allows the system to maintain shadowing resistance by having redundant paths while apparatuses can be positioned flexibly at different locations. The multi-path approach eliminates the need to fix antennas at high heights, as the system can route data through multiple spatial paths regardless of antenna positioning.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9300979B2Methods for transmitting and receiving data contents, corresponding source and destination nodes and storage means

Publication Date: 2016.03.29 CANON KK

AI summary

A method is proposed for transmitting at least two data contents by means of a source node to a destination node via at least two transmission paths. The method for transmitting includes steps of: sub-dividing each content into a succession of elementary data groups according to a predetermined pattern of repetition comprising at least two types of different elementary groups; transmitting elementary groups on at least one of the paths, according to a predefined alternation of elementary groups resulting from the sub-division of at least two different contents.