The Institute of Electrical and Electronics Engineers (IEEE), the standards body behind Wi-Fi, has formally acknowledged the potential of “Li-Fi” as a wireless communication technology. Li-Fi utilizes invisible infrared light to achieve data transfer speeds ranging from 10 megabits per second to 9.6 gigabits per second. This recognition means that Li-Fi can now coexist harmoniously with Wi-Fi, offering an alternative access point and interface for delivering internet connectivity to devices.
Combining Wi-Fi and Li-Fi
Some IEEE members have already been exploring the combination of Wi-Fi and Li-Fi in network setups to overcome the limitations of each technology. By intelligently directing certain devices to connect via Li-Fi instead of Wi-Fi, the overall network performance can be improved. This approach leverages the advantages of Li-Fi, such as its fast and interference-free light-based connection, while mitigating the concerns regarding variable lighting conditions and line-of-sight interruptions.
The Potential of Li-Fi and Current Developments
Although Li-Fi products have been available for several years, they have not gained widespread adoption. One existing competing standard, the International Telecommunication Union’s G.9991, is already being used in data-beaming bulbs from companies like Philips Hue maker Signify. These products emphasize the benefits of Li-Fi, such as high-speed, private, and direct-line-of-sight connections without radio interference. However, there are challenges to overcome, such as the sensitivity of Li-Fi range to irradiance and incidence angles. Improvements in dynamic beam steering and line-of-sight availability are envisioned for future evolution.
A recent development in the Li-Fi space is the launch of PureLiFi’s Light Antenna One. This small module, released in February, can potentially be integrated into smartphones. PureLiFi claims that the Light Antenna One can already achieve data transfer speeds exceeding 1Gbps, depending on the specific use case. However, it is important to note that the module is designed to communicate with devices within a 10-foot range and has a limited 24-degree field of view when transmitting back. PureLiFi states that the Light Antenna One is compliant with the 802.11bb standard and is poised to enable widespread integration of Li-Fi technology.
The IEEE task group responsible for this recognition provides a comprehensive overview of 802 light communication standards, including detailed information and video tech demos. Additionally, parallel efforts are being made in the development of 802.15.13 standards for industrial and medical applications.
The official recognition by IEEE of wireless light communications as a physical layer for Wi-Fi marks a significant milestone for Li-Fi technology. This acknowledgment opens up new possibilities for integrating Li-Fi into existing wireless networks and devices. While challenges remain, ongoing advancements and developments in Li-Fi technology are expected to improve its reliability and expand its applications in various industries.
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