Why do you need to learn about IEEE 802.11ax?

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Of course, any Wi-Fi user appreciates a fast network connection. Please join TipsMake.com to find out the draft IEEE 802.11ax standard for scope, throughput and stability in this article!

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The Institute of Electrical and Electronics Engineers (IEEE) develops 802.11 specifications to indicate wireless networking properties. Like any technology, the 802.11 standard is constantly changing.

For example, many current Wi-Fi router routers support 802.11ac, manufactured in 2013. The ac standard, called Gigabit Wi-Fi, has the following properties:

1. Maximum speed of 1.3 Gbps;
2. Operating in 5-GHz band;
3. Connect up to 4 devices at the same time through Multi User - Multi Input Multi Output (MU-MIMO).

What is 802.11ax?

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IEEE is striving to complete the 802.11ax standard and plans to publish publicly in 2019. You can refer to the specifications on the IEEE website (http://www.ieee802.org/11). /Reports/tgax_update.htm). In addition, National Instruments has produced an excellent report on 802.11ax that helps readers better understand it.

Perhaps your question at this point is "Why should I care about 802.11.ax? ' To answer that question, let us consider the main benefits that 802.11ax brings to users .

MIMO-OFDM

As mentioned above, MIMO allows a wireless access point to work maximum with 4 separate data streams. 802.11ax has the ability to multiplexed MIMO with the technique of Accessing Orthogonal Frequency Division Access (OFDA) into the table. In general, that means that 802.11ax router routers can transmit 4 MIMO space streams (using multiple antennas to transmit and receive wireless connection signals), maximizing theoretical bandwidth. up 4 times.

(Spatial stream) is often referred to in wireless networks / communications using MIMO.When the wireless signal is transmitted or received simultaneously in a MIMO environment, the signal is transmitted by other antennas. each other is multiplexed by using different spaces in the same spectral channel, these spaces are called spatial streams.)

Speed

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Suppose a single 802.11ax stream is 3.5 Gbps, multiplied by 4 times and you will receive a maximum theoretical bandwidth of 14 Gbps. It's fast, but there are always mitigating factors, such as channel width in the 5-GHz band that wireless access points use.

You may ask: 'Why do any of us need such a network speed?'. Yes, please see the idea of ​​taking any of the following actions with a latency of almost zero :

1. Watch online 4K resolution video (Ultra HD);
2. Download the full details of the game to your dashboard;
3. Indoor 'smart' devices have no latency.

The good news is that high-end WiFi devices equipped with 802.11ax are backward compatible with current standards and the older 802.11a / b / g / n / ac standard (in some cases).

Signal reception

Wi-Fi standards have switched to 5-GHz band to reduce conflict with 2.4 GHz household appliances. 802.11ax operates in the 5GHz band. However, the special IEEE 802.11ax design has high stability. In fact, the unofficial name of 802.11ax is "High-Efficiency Wireless" or HEW.

IEEE will design 802.11ax that provides stable, flexible performance even in dense Wi-Fi areas. For example, think about how many wireless Wi-Fi networks (WLANs) compete in both the 2.4-GHz and 5-GHz bands in an apartment building.

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Range

In this article, we reveal a little about the range of efficient indoor and outdoor operations supported by 802.11ax. The 802.11n standard, the current Wi-Fi standard, operates with an indoor distance of about 70 meters and an outdoor distance of 240 meters.

The bottom line

If it is difficult to produce and select IEEE 802.11ax, it will be (a) certificate and (b) support the original equipment manufacturer (OEM). Intel and Qualcomm have just announced that chips will be available this year for the new standard. Asus and D-Link both announced their routers will use this standard. However, it takes a while before the new standard becomes an official standard.

The Wi-Fi Alliance will validate Wi-Fi interfaces and devices to see which IEEE 802.11 standards they meet. Although IEEE plans to release 802.11ax specifications in 2019, there is no way to determine how long this certification process will take.

Wi-Fi certification is necessary; Customers can rely on Wi-Fi Alliance certification to buy Wi-Fi equipment. In addition, you also need to know in advance the specifications of the device to be purchased, to make sure it will work in your current network environment.

Refer to some more articles:

1. Instructions on how to turn smartphones into monitors for computers via Wifi connection
2. Intel is about to launch a new Wifi chip that makes web browsing speed unbelievably fast
3. 6 common Wi-Fi network errors and remedies

Having fun!