30Gbps communication speed, practic...
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30Gbps communication speed, practical use of "Wi-Fi 7" is in 2024: The formulation is progressing as "802.11BE".
European regulatory authorities are working to enable Wi-Fi and next-generation "Wi-Fi 6E" (Wi-Fi corresponding to the 6GHz band) in Europe.It seems that they are getting more and more pressure on not moving slowly.
On the other hand, the IEEE 802 Standardization Committee has made smooth progress, including the final adjustment of the next generation of wireless LAN standards.The working group has recently announced details on the technical standards called "IEEE 802.11BE (hereinafter, 802.11BE)", but if this will be practical in late 2024 as scheduled, "Wi-Fi 7".Is expected to be specified.
First, let's pay attention to the good points.802.11BE (EHT: EXTREME High Throughput) Science engineers and the standardization committee have set a very ambitious goal, responding to connectivity demand that has continued to increase and bandwidth.It is said that it will achieve further efficiency of use.
Wi-Fi規格のロードマップ（クリックで拡大）In formulating the standard, we aim to faster data transmission speeds, improve low latency, improve electricity / cost efficiency, reduce interference, and improve capacity density.It seems to be very difficult.Since the committee will be able to announce the 802.11BE amendment in the mid-2024, it is expected that the certification and interaction test will be started by the end of the year with the support of Wi-Fi Alliance.
Of course, like the old version of the wireless LAN, the pre -certified end -user equipment will appear before late 2024.This situation is currently occurring in Wi-Fi 6, and the next generation of Wi-Fi 6E is expected to continue.
In order to achieve a smooth transition to the next generation, it is necessary to ensure backward compatibility with the old generation Wi-Fi.
The standard for 802.11BE (Wi-Fi 7) is likely to adopt OFDMA (orthogonal frequency division multiple multiple methods), but the advancement of important technology has also provided options to adopt the 4096QAM (orthodal amplitude modulation) method.It is expected.
The specified improved version of the MU-MIMO (multi-user MIMO: "CMU-MIMO, which has been called" coordinated "CMU-MIMO) is 16 in Wi-Fi 6.It can be doubled.This is expected to increase throughput by 20 %, but as described above, low modulation methods will continue to be supported.
On the other hand, the standardization committee also pointed out that "Wi-Fi 7 may be the biggest design task to realize these efforts."
Due to the technology that would be required in Wi-Fi 7, such as link aggregation and multi-links, such as link aggregation and multi-links that are not adjacent, Wi-Fi 7 is said to be 46G bit/second (BPS).The more realistic throughput (when implementing in the real environment) presented by the Standardization Committee is 30Gbps.
Of course, when Wi-Fi 6e and Wi-Fi 7 are all practical, the 6GHz band will be widely used for other wireless services (excluding 5G cellulers).AFC (Automated Frequency Co-Ordinator), which is currently being developed, is expected to enable efficient spectrum sharing.
According to a recently published technical outline by the founder Monica Paolini of Senza Fili, a networking consultant company, "Wi-Fi 7 brings flexibility and function to companies and expands the range of wireless LAN use."
Paolini states that Wi-Fi 7 will play a major role in supporting applications that require delay, reliability, and QOS (QOS of Service).
Companies should provide even more opportunities for industrial automation, surveillance, remote control, VR (virtual reality) / AR (extended reality), and other video applications.
[Translation: Rumi Tanaka, edit: EE TIMES JAPAN]
