Right. I didn't want to spend too much of my time delving into any and all situations where it'll vary.


I wonder how much the sub 1 GHz penetrates the buildings anyway if the transmitter is at the street.


5G won't solve the building penetration without entering the building, which 4G could do just as well.






-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com

From: "Christopher Morrow" <morrowc.lists@gmail.com>
To: "Mike Hammett" <nanog@ics-il.net>
Cc: "Ryland Kremeier" <rkremeier@barryelectric.com>, "Shane Ronan" <shane@ronan-online.com>, "North American Network Operators' Group" <nanog@nanog.org>
Sent: Friday, January 3, 2020 12:42:39 PM
Subject: Re: 5G roadblock: labor

On Fri, Jan 3, 2020 at 9:28 AM Mike Hammett <nanog@ics-il.net> wrote:
>
> Throughput is (mostly) a function of channel size, modulation, and signal to noise ratio.
>
> Coverage is (mostly) a function of frequency, radiated power, obstacles, and signal to noise ratio.
>
>
> Other than in the bowels of large buildings, coverage shouldn't be an issue in most urban areas.

Mike, I'd caution your use of: "other than in the bowels of large
buildings" there... In office buildings (or residential buildings)
which are LEED certified often you get glass coatings which reflect
radio emissions (both reflect IN and reflect OUT) so.. in most
'modern' office buildings (which LEED certification, or equivalent)
even standing next to a window you may not pick up LTE/3g from outside
:(

there are internal building deployment things, of course, which can be
done... but not every building is equipped :(