Wi-Fi 7: what are the benefits and when will the first equipment arrive? – Telecommunications

 Wi-Fi 7: what are the benefits and when will the first equipment arrive?  - Telecommunications

Wi-Fi 7 (IEEE 802.11b and its technical standard designation). scheduled to be massaged in 2024-25, with the approval of the final version of the specifications, but there are several brands that promise to offer products with the new connection technology in the course of this year.

THE new wireless network technologyintended for indoor and outdoor use, operates in the 2.4, 5 and 6 GHz frequency bands. On paper, the links can reach up to 30 Gbps.

Wi-Fi frequency map

Frequency comparison.

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Frequency comparison.

The anticipation of technology is partly due to the launch of Qualcomm’s new SoC, the Snapdragon 8 Gen 2 that supports Wi-Fi 7 connection and the first smartphones are already using the chips, although they do not advertise the speed of the connections. TP-Link has also unveiled its product range, including routers with the new connectivity technology. The company guarantees that its new Archer BE900 home router can provide speeds of 24 Gbps, but more importantly, it showed that the technology is mature and there is no frequency interference with other equipment.

In Intel’s roadmap, the first computers with its architecture came on the market from 2024, in accordance with the certification scheme of the Wi-Fi Alliance. And the potential for equipment manufacturers is huge, as it will be which not only allows data to be transferred at a much higher speed, but also enables 8K video streaming experiences, the massification of wireless virtual and augmented reality, cloud gaming and others.

Media Tek demonstrated Wi-Fi 7 at CES 2022, demonstrating in practice the potential of the new connectivity technology and its importance especially in business premises, offices, but also in home networks, an increasingly important aspect in the context of today’s telecommuting and hybrid work . But Qualcomm has also already presented its Wi-Fi 7 platform, which promises a wireless speed of up to 33 Gbpsproviding secure and scalable connections from the single user to full coverage of a show.

And beyond entertainment, home appliances and IoT equipment, industrial IoT, telesurgery and Industry 4.0. In practice, the file transfers that take minutes become seconds, in an overall performance experience very close to wired connections.

WiFi speed 7

Speeds of different generations of Wi-Fi 6 and Wi-Fi 7.

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Speeds of different generations of Wi-Fi 6 and Wi-Fi 7.

What is the main difference between Wifi 7 and Wifi 6?

Wi-fi 6 ultimately served as an “upgrade” to Wi-fi 5, created primarily to respond to the growing number of wireless devices available around the world. all the Wi-Fi 7 aims to provide faster speeds for any device, but with greater efficiency. The main aim is to reduce the congestion of the linesbuffering and data transfer delays in wireless networks.

Increased bandwidth and Multi-Link operations make this possible get speeds 4.8 times faster than Wi-Fi 6 and 13 times faster than Wi-Fi 5. It also promises latency 100 times lower than the previous generation.

What is the potential of the network with a bandwidth at a frequency of 6 GHz?

Wi-Fi 6E is limited to the 2.4 GHz and 5 GHz frequencies, so bandwidths of 20, 40, 80 and up to 160 MHz. By introducing the frequency of 6 GHz, it is possible to obtain twice the bandwidth, i.e. up to 320 MHz.

Another technical leap is the move from 1K QAM (Quadrature Amplitude Modulation) to 4K QAM, which allows each signal to carry more data. Imagine the technology as if it were professional carriers who optimized the space of their trucks to carry more boxes.

What is Multi-Link Operation Technology?

Equipment with Wi-Fi 7 connection technology can be connected to two bands (5 and 6 GHz) simultaneously. This allows for higher speeds through aggregation. On the other hand, both bands can be used in parallel so that they share the redundancy and improve the connection. This ensures that latencies are drastically reduced, which promises to be ultra-low.

To better understand, going back to the truck analogy, it’s like they used two highways to get more boxes to their destination faster. But more importantly, it is transport identical boxes, stowed in different trucks, on each highway, making sure at least one arrives at its destination. In addition, this truck always chooses the fastest highway. In this way, data is delivered with optimal performance, even in the most crowded areas.

multi link

Multi-Link explanation diagram. Qualcomm credits

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Multi-Link explanation diagram. Qualcomm credits

Until now, for example, a smartphone could only connect to one frequency, namely 2.4 GHz or 5 GHz. When devices supporting Wi-Fi 7 become available, it will be possible to use multiple connections to the access point via Multi-Link Operation, across all frequency bands.. This technology enables wireless performance comparable to that connected by wire.

How important is Automated Frequency Coordination (AFC) in Wi-Fi 7?

The wireless connection technology now has a new band with a frequency of 6 Ghz, one of the novelties of the new generation. But the problem is that this frequency was already used and will not be exclusive to Wi-Fi connections. NASA itself uses the frequency, as do other US federal agencies. This means there can be unwanted interference and this is where AFC technology comes in..

The AFK is one system that coordinates the use of spectrum in the 6 GHz frequency mandated by the FTC (United States Federal Communications Commission) and was created in a joint effort of several entities, including the Wireless Broadband Alliance, to assist in the worldwide adoption of Wi-Fi 7 in this new frequency, signed by several dozen countries .

This technology also allows common equipment to be used outdoors, increasing indoor capacity but ensuring that they do not interfere with existing services in the 6 GHz frequency, as explained by RCR Wireless.

TP link

Equipment connected via Wi-Fi 7. Credits: TP-Link

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Equipment connected via Wi-Fi 7. Credits: TP-Link

The technology analyzes existing signals for frequency and patterns on the antenna to create a shared database that can be queried and used to avoid interference. Wi-Fi uses energy-efficient indoor access points and standard outdoor units, which are more susceptible to interference in this case. AFC creates algorithms to help Wi-Fi 7 scale to more power while avoiding unwanted interference.

It’s still early days to experience the potential of Wi-Fi 7 connections, but if the previous generation had already made a quantum leap over the previous one, it won’t be hard to imagine how the connectivity of the future could look like. Especially now that there are more smartphones, computers and even smart devices in the house. It will certainly be easier and faster to have all devices speak the same language.