With the new generation of WiFi 6 entering more and more smart devices, WiFi 6 based on the 2.4GHz and 5GHz frequency bands have become more and more familiar to the people.Meanwhile, the WiFi 6E —— is running on the 6 GHz band.We believe that WiFi 6E will be an important technical standard in WiFi history, and that it will be a technical cornerstone for many applications.
WiFi 6E with the 6GHz frequency band
WiFi 6E is an enhanced version of WiFi 6 (E represents Extended). The main difference between WiFi 6E compared with WiFi 6 is the addition of a 6GHz band (5925-7125 MHz, 1.2 GHz bandwidth to the original band).
The new 6 GHz band width is 1.2 GHz for 7160MHz bands, or 1480MHz bands.This is very good news for the currently crowded 2.4GHz and 5GHz.Before introducing WiFi 6E, WiFi worked on 2.4GHz and 5GHz bands for some time, and more than a dozen devices had to grab valuable bandwidth resources in a typical home scene.The bandwidth demand of these different devices is different, and mixed use may cause devices with low bandwidth demand and high bandwidth demand, which has an adverse impact on the user experience of devices with high bandwidth demand.While 6GHz is a relatively free frequency band, and this time WiFi 6E can provide seven consecutive 160MHz bands at a time is very suitable for high-performance applications, which means that WiFi 6E-support systems can allocate traditional bands of 2.4GHz and 5GHz to devices with low performance requirements, and assign clean and complete 6GHz band to high-performance equipment, so that different devices get what they need.
The main improvement of WiFi 6 802.11ax for the previous generation of 802.11ac is in data throughput, while the improvement of WiFi 6E over WiFi 6 is in two dimensions of data throughput and latency.
WiFi 6E‘s low latency and high throughput will first leverage the next generation of multimedia applications.For example, Google last year released Stadia, the cloud gaming platform, which features games running in the cloud and transferring graphics to the player’s screen over the Internet, so players can get a high-quality game experience without a high console.Stadia plans to support 8K picture transfer in the future, thus requires high data throughput for the network, to ensure the game player operation experience, the player network access delay must be very low, otherwise the player operation input may not be reflected in real time due to high network latency, thus damaging the game experience.Stadia is just an example, and we expect that with more real-time user interaction and more sufficient content in multimedia applications, the requirement for wireless networks is not just high data throughput, but also low latency.Therefore, WiFi 6E is expected to address the current pain points of wireless networks and leverage such applications to accelerate their landing.
In addition to multimedia applications, another WiFi 6E is expected to cooperate with industrial applications leveraged by edge computing.For industrial applications, an ideal configuration is to deploy edge computing equipment nearby, and to complete communication and control with a low-latency and high-bandwidth network and industrial equipment.For example, for deep learning based mechanical arm, it requires great computing power, if all the calculation on the mechanical arm itself, may challenge the mechanical arm heat dissipation, volume and even cost, and with WiFi 6E, can quickly calculate data back to the local edge computing server, the server after returning to the mechanical arm to complete the control, and this process requires high data throughput and low latency is the strength of WiFi 6E.