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 

----- Original Message -----

From: "Christopher Morrow" <morrowc.li...@gmail.com> 
To: "Mike Hammett" <na...@ics-il.net> 
Cc: "Ryland Kremeier" <rkreme...@barryelectric.com>, "Shane Ronan" 
<sh...@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 <na...@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 :( 

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