Re: [gaia] 6Ghz wifi

Jonathan Brewer <jon.brewer@gmail.com> Thu, 26 September 2019 00:07 UTC

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From: Jonathan Brewer <jon.brewer@gmail.com>
Date: Thu, 26 Sep 2019 08:06:58 +0800
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To: Steve Song <stevesong@nsrc.org>
Cc: gaia <gaia@irtf.org>
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Subject: Re: [gaia] 6Ghz wifi
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On Thu, 4 Oct 2018, 02:32 Steve Song, <stevesong@nsrc.org>; wrote:

> Thanks Jane!
>
> On Wed, 3 Oct 2018 at 13:58, Jane Coffin <coffin@isoc.org>; wrote:
>
>> The bands allocated to the mobile service between 5150 - 5925 MHz, as
>> well as bands above that range, are also allocated to a number of other
>> services on a co-primary basis. You should be aware that there is strong
>> evidence (i.e. from spectrum monitoring) that shows that the current use of
>> WiFi in this band is causing serious interference into the other services.
>> So, the future expanded use is probably going to be a hotly debated issue
>> at the WRC-19.”
>>
>
> I love this wording:  "strong evidence (i.e. from spectrum monitoring)
> that shows that the current use of WiFi in this band is causing serious
> interference into the other services"
>

We have regular interference issues in New Zealand to weather radar, from
users of Wi-Fi devices outdoors who operate without the mandated (pesky,
performance impacting) radar detect and automatic transmit power control
modes that must be used in the 5470-5725 MHz band.

I've been involved on a professional basis helping to resolve such issues -
so interference is a real, valid threat.

However, as countries move to fibre backbones even in remote areas, the
need for 6 GHz linking spectrum (called R band in my market) will drop off.
Our regulator & existing users will fight to keep unlicensed use away, but
in ten years time they won't have a good argument anymore. The spectrum
will be better used if it's open.

Cheers,

Jon





>