{"id":686,"date":"2025-08-27T16:26:02","date_gmt":"2025-08-27T16:26:02","guid":{"rendered":"https:\/\/www.cablesandkits.com\/learning-center\/?p=686"},"modified":"2025-09-11T17:57:43","modified_gmt":"2025-09-11T17:57:43","slug":"lifi-the-next-generation-of-wireless-technology","status":"publish","type":"post","link":"https:\/\/www.cablesandkits.com\/learning-center\/lifi-the-next-generation-of-wireless-technology\/","title":{"rendered":"Li-Fi: The Next Generation of Wireless Technology"},"content":{"rendered":"\n

A new wireless networking technology is here and it is grabbing the attention of engineers and network specialists alike.<\/p>\n\n\n\n

This new technology is called Li-Fi<\/strong>, and while the concept has been around for a while, the IEEE recently standardized Li-Fi with the new 802.11bb<\/strong> designation. A revolution of wireless technology is upon us.<\/p>\n\n\n\n

What Is Li-Fi?<\/h2>\n\n\n\n

The new standardization of Li-Fi is a big deal in the tech world, but the technology has been around for more than a decade in various forms. So, it is and isn\u2019t a new form of wireless communication technology.<\/p>\n\n\n\n

Li-Fi was built around the idea of using visible light for communication (as opposed to radio frequencies that are used for Wi-Fi). As the technology developed, infrared and ultraviolet bands have been added to the technology to expand its capabilities.<\/p>\n\n\n\n

The point is that Li-Fi uses very different frequencies and bands from Wi-Fi. These different frequencies allow for broader communication potential. Li-Fi can connect in different scenarios and cut through radio interference. It\u2019s also capable of very high speeds. In experimental settings, Li-Fi has exceeded 224 Gbps<\/strong> data rates, which makes it competitive with high-end fiber optics.<\/p>\n\n\n\n

Commercial Li-Fi is not yet this fast (although it can operate in the range of 10 Gbps<\/strong>), but this is an emerging technology with high potential and a lot of buzz.<\/p>\n\n\n\n

How Does It Work?<\/h2>\n\n\n\n

At a technical level, Li-Fi is a physical-layer networking technique that primarily uses LED lights to create signals and light detectors to receive data. The lights are arranged in a circuit that can turn them on and off extremely fast, and the LEDs support different colors. This allows for extremely rapid simultaneous signaling, and it\u2019s why Li-Fi is capable of such extreme data rates.<\/p>\n\n\n\n

But because Li-Fi uses much higher frequencies than traditional wireless communication, network designs come with caveats. For the most part, Li-Fi requires line of sight. This means that the sender and receiver in a data transmission require an unobstructed view of each other.<\/p>\n\n\n\n

This creates complications with wireless design using Li-Fi, and it\u2019s why the technology will not immediately replace Wi-Fi. Instead, it offers alternative communication options, and the combination of Li-Fi with other systems is opening doors.<\/p>\n\n\n\n

How Is It Applied?<\/h2>\n\n\n\n

When it comes to building a network using Li-Fi, the name of the game is integration. With the new IEEE standard, engineers can design Li-Fi devices that work seamlessly with existing technology. The goal is not to immediately replace all wireless with Li-Fi.<\/p>\n\n\n\n

Instead, the plan is to use Li-Fi alongside other systems to expand total networking capabilities. By looking at common use cases, the new standard, the limitations of Li-Fi, and how it is already incorporated with Wi-Fi systems, you can get a clear idea of the present state of this technology and where it is headed.<\/p>\n\n\n\n

Common Use Cases<\/h2>\n\n\n\n

Because Li-Fi primarily needs line of sight for communication, it\u2019s not ideal in all situations. That said, it offers better-than-Wi-Fi communication in a number of settings.<\/p>\n\n\n\n

One obvious option is with ultra-short-range applications. If you have ever used tap-to-pay at a store, this is a common example. Li-Fi can perform RFID functions at very close ranges, and it can do this faster, more reliably, and with greater security than current RFID technology.<\/p>\n\n\n\n

Short-range applications also have a lot of potential. In a setting such as in-flight networking, Li-Fi can provide faster data rates to end users than traditional Wi-Fi. It can also handle a larger number of users, as the Li-Fi bands have access to many more channels in a given network.<\/p>\n\n\n\n

For longer ranges, use cases get more specific, but in any setting where line of sight is reliable, Li-Fi can replace expensive cables, even supplanting fiber optic lines in many settings. In a data center, server-to-server communication can rely on Li-Fi with no expected physical interference. Building-to-building networking similarly can use unobstructed views to send signals across significant distances with little interference or signal degradation.<\/p>\n\n\n\n

At the largest scales, Li-Fi has potential for satellite-to-satellite networking, as once again, the views remain unobstructed and the faster data rates are preferable to radio signals.<\/p>\n\n\n\n

802.11bb<\/h2>\n\n\n\n

With a handful of use cases in mind, we can explore the new standard to see what Li-Fi can currently do and what it is expected to do in the near future.<\/p>\n\n\n\n

The IEEE standard for Li-Fi is designated with 802.11bb<\/strong>. This designation currently covers infrared Li-Fi, meaning there is room for expansion with visible and UV Li-Fi in the future.<\/p>\n\n\n\n

Current commercial devices that adhere to the standard support data rates ranging from 10 Mbps<\/strong> to 10 Gbps<\/strong>. Clearly, not all devices are created equally, but the current top speeds for Li-Fi are superior to most existing wireless networking options, and as the standard expands to support faster versions of Li-Fi, you can expect to see the new technology replace Wi-Fi in high-end settings (like data centers).<\/p>\n\n\n\n

Additional Learning Center Resources<\/p>\n\n\n\n