LiFi Technology

What is Li-Fi

LiFi stands for Light Fidelity is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission. LiFi is designed to use LED light bulbs similar to those currently in use in many energy-conscious homes and offices.

LiFi is a mobile wireless technology that uses light rather than radio frequencies to transmit data. The technology is supported by a global ecosystem of companies driving the adoption of LiFi, the next generation of wireless that is ready for seamless integration into the 5G core.

LiFi data is transmitted by the LED bulbs and received by photoreceptors.

Li-Fi is a Visible Light Communications (VLC) system running wireless communications travelling at very high speeds. Li-Fi uses common household LED (light emitting diodes) lightbulbs to enable data transfer, boasting speeds of up to 224 gigabits per second.

How does LiFi work?

LiFi is high speed, bidirectional, and fully networked wireless communication of data using light. LiFi comprises of multiple lightbulbs that form a wireless network.

When an electrical current is applied to a LED light bulb a stream of light (photons) is emitted from the bulb. LED bulbs are semiconductor devices, which means that the brightness of the light flowing through them can be changed at extremely high speeds. This allows us to send a signal by modulating the light at different rates. The signal can then be received by a detector which interprets the changes in light intensity (the signal) as data.

The intensity modulation cannot be seen by the human eye, and thus communication is just as seamless as other radio systems, allowing the users to be connected where there is LiFi enabled light. Using this technique, data can be transmitted from a LED light bulb and back at high speeds.

LiFi Benefits

Security: Light can be contained in a physical space making LiFi inherantly more secure. Users can see where data is going and there is less requirement for additional security.
Safety: Radio frequency technologies such as Wi-Fi cause interference to electronic devices. LiFi is directional meaning interference is simpler to avoid and even prevent all together. This means LiFi can be used in RF hostile zones.
Data Density: LiFi offers a greater user experience as it reduces the need to share wireless bandwidth with other users. LiFi can achieve approximately 1000 times the data density of Wi-Fi offering substantially more data per square meter.
Location Services: LiFi systems are fully networked and each LiFi enabled light has it’s own IP address which means advanced geo fencing can be deployed simply in a LiFi network.

LiFi System Elements & Deployment

The LiFi system elements contains Access Point which connects to the LiFi-enabled lights to send & receive data , Station which fits into device to send and receive data, to and from Access Point and L-Fi compatible LED bulb. Other required elements are PoE+ 802.3at Switch , Router and Ethernet Cables by Cat5 or Cat6.

The installation process is straightforward and flexible. The LiFi system can be deployed through PoE & network access switch, connected by Cat5 or Cat6 network cabling, or mains power supply units. The Access Switch, Gateway Router and Auto Configuration Server are deemed part of the customer-provided network unless alternative agreement is reached. The scale of a deployment is largely based upon the level of coverage that is required to be provided.

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