Optical Bandwidth Coverage Determination for Li-Fi Systems
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Solution Overview
Problem
Radiofrequency-based wireless communication modalities, such as Wi-Fi, struggle to accurately determine bandwidth coverage due to interference and directional radiation patterns, which limits their effectiveness in dense user areas and areas susceptible to electromagnetic interference.
Innovation Solution
A computing device is developed to determine and convey bandwidth coverage for optical communication modalities like Li-Fi by obtaining configuration and lighting data, allowing for precise calculation and visualization of achievable bandwidth within a space, eliminating the need for real-time signal strength measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If radiofrequency-based wireless communication is used to provide wide coverage, then the coverage area is improved, but the measurement precision of bandwidth coverage deteriorates due to interference and directional radiation patterns
Solution Approach 1:
The patent replaces radiofrequency-based measurement systems with optical communication modalities. Instead of using RF signal strength measurements that suffer from interference and directional patterns, the invention uses optical transmitters and receivers to determine bandwidth coverage, leveraging the properties of light for more accurate and interference-free measurements
Solution Approach 2:
The invention changes the fundamental parameter used for measurement from RF signal strength to optical communication characteristics. By obtaining configuration data and lighting data about optical transmitters and calculating bandwidth coverage based on these optical parameters, the system achieves precise bandwidth determination without the interference problems inherent in RF-based approaches
2Ease of operation
If real-time signal strength measurement is used to determine bandwidth coverage, then the measurement process is simplified, but the measurement precision deteriorates in dense user areas and areas susceptible to electromagnetic interference
Solution Approach 1:
The patent performs preliminary actions by obtaining configuration data and lighting data about optical transmitters before conducting bandwidth coverage measurements. This preparatory step includes gathering information about transmitter locations, optical characteristics, and environmental factors, which enables accurate calculation without requiring complex real-time signal strength measurements in challenging conditions
3Productivity
If optical communication modality is used to achieve high data rates, then the bandwidth capacity is improved, but the device complexity increases due to the need for precise positioning and organization of transmitters and receivers
Solution Approach 1:
The patent implements feedback mechanisms by determining bandwidth coverage and conveying this information back to users and system operators. The computing device calculates bandwidth coverage based on configuration and lighting data, then communicates this information to enable optimal positioning of optical receivers and organization of transmitters, creating a closed-loop system that simplifies deployment while maintaining high data rates
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 accurate positioning of optical receivers and optimal organization of optical transmitters and modems, ensuring consistent and high-bandwidth communication in complex environments without interference issues.
Implementation Method 1
VLC transmits data by intensity modulating optical sources, such as light emitting diodes (LEDs) and laser diodes (LDs), faster than the persistence of the human eye
Implementation Method 2
the information in the Li-Fi coded light can be detected using any suitable light sensor. For example, the light sensor may be a photodiode
Data Source
AI summary
The invention provides a computing device for determining and conveying a bandwidth coverage of an optical communication modality within a space, wherein the space comprises at least one optical transmitter arranged for communicating over said optical communication modality; wherein the computing device comprises a controller configured to: obtain configuration data characterizing a configuration of said space; obtain lighting data characterizing the at least one optical transmitter; determine the bandwidth coverage of the optical communication modality within the space based on the configuration data and the lighting data; wherein the computing device comprises an output interface configured to: convey a signal indicative of the bandwidth coverage of the optical communication modality within the space.