Re: [6gip] Wi-Fi 6E

[Alexandre Petrescu <[e-mail]>]

Le 06/01/2021 à 15:19, Simon Leinen a écrit :
> Alexandre Petrescu writes:
>> Le 05/01/2021 à 16:59, Behcet Sarikaya a écrit :
>>> Thanks for the comments. I found this link on Wi-Fi Alliance web 
>>> site: https://www.wi-fi.org/discover-wi-fi/wi-fi-certified-6 
>>> <https://www.wi-fi.org/discover-wi-fi/wi-fi-certified-6> which 
>>> says that Wi-Fi 6E extends Wi-Fi Certified 6 into 6Ghz all based 
>>> on 802.11ax.
> 
>> So the 6 in WiFi 6E is a coincidence between being a next version 
>> after WiFi 5 and being at 6GHz.
> 
> Right.
> 
>> I still wonder what precisely is that 6GHz band where WiFi 6E is 
>> presumed to be running?
> 
> In the US (since July 2020 I think):
> 
> 5.925 GHz to 7.125 GHz
> 
> In the EU (should be ratified this month(?) and passed into member 
> state law over the subsequent six months):
> 
> 5.925 GHz to 6.425 GHz

5.925MHz?

Wouldn't that would overstep the ITS spectrum which was recently
extended up to 5.935MHz as per
> Commission Implementing Decision (EU) 2020/1426 of 7 October 2020 on 
> the harmonised use of radio spectrum in the 5 875-5 935 MHz
> frequency band for safety-related applications of intelligent
> transport systems (ITS) and repealing Decision 2008/671/EC (notified
> under document C(2020) 6773) (Text with EEA relevance)

https://eur-lex.europa.eu/legal-content/EN/TXT/?qid=1602230223168&uri=CELEX:32020D1426

ITS spectrum is for a WiFi used in OCB mode which stands for Outside the
Context of a BSSID; this means, for example, in that WiFi there is no
Association Req or Resp messages.  It was typically done in the
5.875-5.925MHz range, but now up to 5.935MHz.

Of maybe WiFi 6E wants to cover ITS as well.

Alex


> 
> ...so, at least initially, only half the amount of spectrum (the 
> "lower half").  Maybe more later, who knows.
> 
> Sorry for the US/EU-centricism.  I'm not quite sure what's happening 
> in other countries, except that the Ofcom in the UK already stated 
> their support for Wi-Fi 6E, also in the "lower half" range.  "Ask 
> your local regulator", or look for information on the Internet.
> 
> There's an excellent video explaining Wi-Fi 6E here, including 
> spectrum regulation status, again in particular in the US and 
> (EU/CEPT) Europe, and some technical differences between Wi-Fi 6 and 
> 6E beyond the additional spectrum:
> 
> https://www.youtube.com/watch?v=_fHrKaEB_fk
> 
> (Kudos to Anders Nilsson from SUNET for pointing me to it.)
>