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Announced Wi-Fi 6: what you need to know it is the new standard

 
3r3-31. In early October, the Wi-Fi Alliance announced a new version of the standard Wi-Fi - Wi-Fi 6. Its release is scheduled for the end of 2019. The developers changed the naming approach - they replaced the usual ???ax-type constructions with single digits. We understand what else is new. 3r3179.  
3r3179.  
Announced Wi-Fi 6: what you need to know it is the new standard 3r3190. 3r3179.  
3r3119. 3r3152. /Wikimedia / yonolatengo
/ CC 3r3194.
3r3179.  
3r3179.  

Why change the name

3r3179.  
By According to 3r3190. developers of the standard, the new approach to the name will make the names of Wi-Fi standards understandable to a wide audience. 3r3179.  
3r3179.  
In the Wi-Fi Alliance, it is noted that it’s quite common now that users buy laptops that support a standard that their home router cannot work with. As a result, a newer device resorts to backward compatibility mechanisms — data is exchanged using the old standard. In some cases, this can reduce the data transfer rate by 50–80%. 3r3179.  
3r3179.  
In order to visually show which standard a particular gadget supports, a new marking has been worked out in the Alliance - a Wi-Fi icon, above which the corresponding figure is indicated. 3r3179.  
3r3179.  
3r3179.  
3r3179.  

What features have provided Wi-Fi 6

3r3179.  
A detailed description of all the features and characteristics of Wi-Fi 6 can be found in 3r3352. An official document from the Wi-Fi Alliance
(to get it, you need to fill out the form) or 3r3354. document prepared by cisco
. Next, we will talk about the main innovations. 3r3179.  
3r3179.  
Support 2.4 and 5 GHz bands. Ideally, simultaneous support for 2.4 and 5 GHz will help increase the number of scenarios for working with multiple devices. However, in practice, this advantage may be of no use. There are too many legacy devices on the market (which do not support 2.4 GHz), because new devices will regularly work in compatibility mode. 3r3179.  
3r3179.  
OFDMA support. This is Orthogonal Frequency Division Multiple Access (OFDMA). In fact, this technology is a “multi-user" version of 3r3686. OFDM 3r3190. . It allows you to divide the signal into subcarriers and allocate their groups for processing individual data streams. 3r3179.  
3r3179.  
This will allow simultaneous transmission of data to several Wi-Fi 6 clients at an average speed. But there is one reservation: all these clients must support Wi-Fi 6. Therefore, the “old” gadgets, again, are “overboard”. 3r3179.  
3r3179.  
Collaboration MU-MIMO and OFDMA. In Wi-Fi 5 (this is 3r3-382. ???ac
In the old notation, which was approved in 2014) technology MIMO (Multiple Input Multiple Output) allowed data to be transmitted to four clients using different subcarriers. In Wi-Fi ? the number of possible device connections has doubled to eight. 3r3179.  
3r3179.  
The Wi-Fi Alliance states that MU-MIMO systems, along with OFDMA, will help organize multi-user data transmission at speeds up to 11 Gbit /s in 3r-390. downlink
. This is the result of r3r392. demonstrated r3r3190. test devices at CES 2018. However, residents of Hacker News celebrate that ordinary gadgets (laptops, smartphones) will not see such speed. 3r3179.  
3r3179.  
During tests at CES 3r3-3100. used
The D-Link DIR-X9000 tri-band router, and 11 Gbps, is the sum of the maximum data rates in three channels. Residents of Hacker News say that, most often, devices use only one channel, because the data will be transmitted at speeds of up to 4804 Mbps. 3r3179.  
3r3179.  
Target Wake Time function. It will allow devices to go to sleep and "wake up" on a schedule. Target Wake Time determines the time when the device is idle, and when it works. If the gadget does not transmit data in a specific period of time (for example, at night), its Wi-Fi connection “falls asleep”, which saves battery power and reduces network congestion. 3r3179.  
3r3179.  
For each device, a “target wake-up time” is set - the moment when a conditional laptop always transmits data (for example, during business hours in corporate networks). During such periods, the sleep mode will not be activated. 3r3179.  
3r3179.  
3r3116. 3r3179.  
3r3119. 3r3152. /Wikimedia / Guido Sorarù / CC 3r3194.
3r3179.  
3r3179.  

Where will use Wi-Fi 6

3r3179.  
According to the developers, the technology will be useful when deploying Wi-Fi networks with high density. Individual solutions, for example, MU-MIMO and OFDMA, will improve the quality of communication in public transport, corporate environments, shopping halls, hotels, or stadiums. 3r3179.  
3r3179.  
However, the members of the IT community 3r3139. see r3r3190. Wi-Fi 6 is a big minus in the context of technology implementation. The tangible result of the transition to Wi-Fi 6 will be noticeable only if all devices on the network will support the new standard. And with this, there will definitely be problems. 3r3179.  
3r3179.  
Recall that the release of Wi-Fi 6 will be held in late 2019. 3r3179.  
3r3179.  
3r3149. 3r3179.  
3r3152. P.S. Several materials on the topic from the blog VAS Experts:
 
3r3179.  
3r3181.  
3r3188. 3r3-3160. Providing free Wi-Fi in accordance with legislation
3r3191.  
3r3188. 3r3165. Internet to the village - we build radio-relay Wi-Fi-network
3r3191.  
3r3188. 3r33170. Shot in the leg: critical errors in the construction of networks of telecom operators
3r3191.  
3r3193. 3r3179.  
P.P.S. Related articles from our blog on Habré:
 
3r3179.  
3r3181.  
3r3188. 3r3184. "Expanded boundaries": the 6 GHz band will be provided for the needs of Wi-Fi
3r3191.  
3r3188. 3r3189.[Не]ordinary networks: how to detect water in a bag using Wi-Fi
3r3191.  
3r3193. 3r3194.
3r3198. ! function (e) {function t (t, n) {if (! (n in e)) {for (var r, a = e.document, i = a.scripts, o = i.length; o-- ;) if (-1! == i[o].src.indexOf (t)) {r = i[o]; break} if (! r) {r = a.createElement ("script"), r.type = "text /jаvascript", r.async =! ? r.defer =! ? r.src = t, r.charset = "UTF-8"; var d = function () {var e = a.getElementsByTagName ("script")[0]; e.parentNode.insertBefore (r, e)}; "[object Opera]" == e.opera? a.addEventListener? a.addEventListener ("DOMContentLoaded", d,! 1): e.attachEvent ("onload", d ): d ()}}} t ("//mediator.mail.ru/script/2820404/"""_mediator") () (); 3r-33199.

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13-10-2018, 13:40

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