This Will Be Wifi 7: Welcome to the Era of “Super Capability” | Technique


A group of attendees at a conference in Seville use their mobile devices connected to the center's Wi-Fi network.
A group of attendees at a conference in Seville use their mobile devices connected to the center’s Wi-Fi network.Paco Bridges

Tech companies don’t always dance to the same beat. This is the case with wireless communications, where the companies that provide communication networks cannot keep up with the system developers to make the most of the data flow. In this way, when the fifth generation networks of mobile communications spread, the processor platforms are already working with the new generation of the sixth generation. The same goes for Wi-Fi. While a standard (model) for the seventh generation has not yet been approved, several companies have already submitted their devices to this technology, which promise greater speed, range, capacity and quick response.

The Wifi Alliance, the entity that certifies standards for the most popular technologies for wireless communications and the primary global avenue for Internet traffic, still considers Wifi 7 (802.11b) to be “under development”. However, companies such as MediaTek, Intel, and Broadcom have already introduced possible next-generation products. The latest company to join was Qualcomm, which last December introduced its new Wifi 7 Immersive Home Platform.

“We can deliver more than 20 Gbps,” says Nick Kucharewski, vice president of Qualcomm, which ensures that the new systems are designed specifically for home use, also means power consumption can be reduced by up to 22%.

However, that speed and capacity of up to 20 gigabits per second (Gbps) is far from what network carriers can provide right now, which come to provide homes with one gigabit per second, and in some cases, as many as 10. Kucharewski believes that While that’s accessibility, new routers and processors provide “fast performance” even when you don’t have networks or hardware ready for the next standard.

Wifi 7 benefits the home user in several aspects: the gaming experience is optimal by providing maximum resolution and lowest latency (delay is reduced by 75%), online audiovisual content consumption reaches the highest quality (4K and 8K) without interruption and video conferencing works Transfer data and connect multiple devices simultaneously more efficiently. It will also be essential for virtual reality applications.

Domestic consumption is actually one of the drivers of this acceleration in wireless communications. “More people have fiber in the home, more apps are running in the home, and we have more and more connected devices,” Kucharewski sums up.

Up to 22 devices connected to the Wi-Fi network

In this sense, the director of the technology company explains that videos and high-bandwidth-demanding applications account for 71% of domestic traffic and online games are growing annually. Telework and video communications have also increased by up to 250%. This new entertainment and work paradigm is joined by new connected devices such as security cameras (23% of homes), smart doorbells (26% in the US), interactive speakers (40%) and other devices, totaling up to 22 connected devices. For the network in more advanced homes.

This new reality requires a high-capacity home network, speeds that allow applications to run in real time, and a system that facilitates the simultaneous operation of many devices.

Wifi 7 brings these improvements and represents a huge leap over the previous generation. Alvaro Rubio-Segovia, engineer at SSoftware development at Zalcu Technologies.

The Spanish engineer explains that the main resources of 802.11be, also known as Extremely high productivity (EHT, short for Extremely High Throughput), is 320MHz bandwidth, making it easy to double the data rate, and technologies like Multi-RU and Multi-Link Operation (MLO). This state-of-the-art technology, as defined, “allows wireless devices to use several communication channels at the same time [2,4 GHz, 5 GHz y 6 GHz], which improves the efficiency in data transmission and the performance and quality of network connectivity. In addition, this new standard uses a higher modulation level (4096-QAM), which enables higher speed and capacity to transmit information.”

Alvaro Rubio adds, “Wifi 7” provides a faster, more reliable and efficient connection to the wireless network than the previous generation. This translates to a peak data transfer rate of 40 Gbps, four times more than its predecessor, thanks to the incorporation of new technologies and more efficient use of resources.”

Intel gives an analogy to explain the benefits of the new standard: It’s like a large, mobile truck that allows you to improve payload space compared to a truck with half the capacity. These technologies, similar to haulage, have, in addition to the potential simultaneous use of many roads, the ability to choose roads that do not present heavy traffic, rather than having to wait for the road to be clear, or to redistribute the load into smaller trucks that can turn better on available routes.

The advantages of a conventional laptop computer, for example, is that it will gain 2.4 times the speed of the previous generation of wireless connections. Downloading 15GB, which is the limit for free Google Photos storage, only takes about 25 seconds.

This is Wi-Fi 7

These are the new Wifi 7 technologies and their impacts, in a Zalcu Technologies engineer’s analysis summary:

Multi-link operation (MLO). It allows wireless devices to use several communication channels at the same time, which improves data transmission efficiency and network connection performance and quality. You gain connection speed, which is essential for online video or large file downloads, capacity (key when there are multiple users connected), stability (no dropouts), latency, and power efficiency.

320MHz bandwidth. The 6GHz band supports up to six overlapping 320MHz channels and three non-overlapping channels. This enables improved quality of service and faster transmission speeds in Wi-Fi networks, which is an essential aspect for virtual reality or HD video applications. There is an increase in connection speed and quality, less interference is recorded and power consumption is reduced, which, in addition to a lower bill cost, means longer battery life.

4096-QAM modulation (Quadrature Amplitude Modulation). Improve spectral efficiency by allowing better use of available bandwidth and gains in transmission speed. Both aspects benefit the user of applications that require low latency. The main disadvantage is that it requires more power to transmit the signal and can be more error prone.

Multiple inputs and multiple outputs (the silent acting). This technology multiple input multiple output pProvides 16 data streams across multiple access points simultaneously to improve connection speed, performance, network efficiency, and performance in overlapping or high device density environments.

Multi-RU or Multiple Resource Units. Provides speed when using several resource units simultaneously, increased efficiency in spectrum use and flexibility in resource scheduling.

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