While most of you have just upgraded to Wi-Fi 6, and some may be contemplating a move to Wi-Fi 6E, their successor is already on the horizon. Wi-Fi 7 is the next significant advancement, and it, like its predecessors, promises faster connections, lower latency, and the ability to manage more connections gracefully than ever before.
If you want to improve your Wi-Fi now, Wi-Fi 7 is not the solution because support will be limited for some time. However, early adopters will be pleased to learn that the first batch of Wi-Fi 7 routers will be available in early 2023. Realistically, most of us will have to wait a long time before considering switching.
The 7th generation of Wi-Fi promises significant improvements over Wi-Fi 6 and 6E, with speeds up to four times faster. It also includes ingenious advancements to reduce latency, increase capacity, and improve stability and efficiency.
In the old naming convention, Wi-Fi 7 was IEEE 802.11be, Wi-Fi 6 was IEEE 802.11ax, and Wi-Fi 5 was IEEE 802.11ac. Wi-Fi 7 will, like previous standards, be backward compatible. However, in order to take advantage of the new features and improved performance it promises, you must upgrade your devices.
Wi-Fi 7 will be faster, support more connections, and be more adaptive in order to provide consistent low-latency performance. These advantages will aid in the delivery of high-quality video and improved cloud gaming, as well as serving AR and VR applications that require high throughput and low latency. Wi-Fi 7 also addresses congestion and interference, bringing tangible benefits to areas with densely packed devices or overlapping neighbouring networks. The latter is especially important for businesses and larger venues.
Each band is subdivided into channels. The 2.4-GHz band is divided into 11 channels of 20 megahertz (MHz). The 5-GHz band has 45 channels, but they can be combined to create 40-MHz or 80-MHz channels rather than being limited to a width of 20 MHz. The 6-GHz band supports 60 channels, which can be as wide as 160 MHz with Wi-Fi 6E. Wi-Fi 7 supports channels with a bandwidth of up to 320 MHz. The more data that can be transmitted, the wider the channel. Quadrature Amplitude Modulation (QAM) is a method of transmitting and receiving data over radio waves. The more information you can fit in, the higher it is.
Wi-Fi 7 supports 4K-QAM, Wi-Fi 6 only 1024-QAM, and Wi-Fi 5 only 256-QAM.
Signal strength, background noise, and interference all complicate the potential benefits. As a result, as QAM increases, the range decreases, necessitating a stronger signal. As a result, the upgrade to 1024-QAM in Wi-Fi 6 provided approximately a 25% data rate increase over Wi-Fi 5. The upgrade to 4K-QAM in Wi-Fi 7 results in a 20% increase in peak performance.
Multi-Link Operation is possibly the most exciting advancement in Wi-Fi 7. (MLO). Every previous Wi-Fi standard connected two devices on a single frequency band. A tri-band Wi-Fi 6E router, for example, connects two devices on a single band on a fixed channel (the router decides whether to connect on the 2.4-GHz, 5-GHz, or 6-GHz band).
MLO can combine multiple frequencies from different bands into a single connection. A Wi-Fi 7 router can connect to a Wi-Fi 7 device simultaneously across two or more channels in different bands. MLO may enable wider channels capable of transmitting more data—to return to our highway analogy, you can send traffic on both the highway and the superhighway at the same time.
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