Design And Experimental Evaluation Of A Hybrid Lifi–wi-fi Multiplexed Data Communication System Using Packet-level Link Aggregation And Failover

Abstract

The Need For Fast And Reliable Wireless Connections Is Growing, And To Meet This Demand, Different Communication Technologies Are Being Combined. One Approach Is To Use Light Fidelity, Or LiFi, Which Provides A Secure And Localized Way Of Sending Data Through Light, With Minimal Interference From Other Devices. On The Other Hand, Wi-Fi Offers A Wider Range Of Coverage And Can Work Even When There Are Obstacles In The Way. This Project Brings Together The Benefits Of Both LiFi And Wi-Fi To Create A Hybrid System That Can Send Data Quickly And Efficiently. The System Uses A Small Computer Called An ESP32 Microcontroller To Receive Data, Break It Into Small Packets, And Send Them Through Either The LiFi Or Wi-Fi Connection. The Packets Are Labeled With A Sequence Number And A Check Code To Make Sure They Are Delivered Correctly. When The Packets Arrive At Their Destination, They Are Put Back Together In The Right Order And Checked To Make Sure They Are Correct. The System Uses A Special Format For The Packets, Which Includes A Start Signal, A Sequence Number, The Length Of The Data, The Data Itself, A Check Code, And An End Signal. The System Was Tested With A LiFi Connection Speed Of 2400 Bits Per Second And A Wi-Fi Connection On Port 5000. The Results Showed That The System Can Send Data Independently Through Both LiFi And Wi-Fi, And Can Also Combine The Two Connections To Send Data More Efficiently. The System Can Detect If The LiFi Connection Is Not Working And Automatically Switch To The Wi-Fi Connection. This Makes The System More Reliable And Able To Work Even When There Are Problems With One Of The Connections. The Next Step Is To Develop A System That Can Adjust Its Scheduling Based On How Well The Connections Are Working, Taking Into Account Factors Such As Speed, Accuracy, And Latency. This Will Make The System Even More Efficient And Reliable

Keywords