Re: residential/smb internet access in 2019 - help?

["Forrest Christian (List Account)" <lists () packetflux com>]

On Wed, Mar 27, 2019 at 2:05 PM Bryan Fields <Bryan () bryanfields net> wrote:
> Looking at the typical equipment used (64 QAM, 20 MHz channel), you're going
> to have a raw bitrate of around 80 mbit/s.  Couple this with overhead and some
> inevitable interference and an access point will have about 50 mbit's of large
> frame capacity.  This is not much, and every client added will slightly reduce
> this due to multicast and supervisory signaling losses.  Each system is going
> to be Time Division Duplex (using the same channel for transmit and receive),
> so you will split this say 75/25 down/up stream.  This means you have at best
> 37.5 Mbit/s available for all clients to share, which isn't much for a 90 or
> 120 degree sector out to 10 miles (or more) depending on density.

Ahh, and there's your misunderstanding.

Most good WISPS deploy equipment which is capable of much more, with
much smaller cell sizes anymore.     256QAM is the rule, 3 Miles is a
large cell size, and with MU-MIMO enabled AP's you can get aggregate
of around 500MB/s on a single 20Mhz wide channel.  If you can find
40Mhz, it's over 1GB/s.   Of course, this depends on the exact
equipment deployed.    Even with lower-end equipment most operators
end up with 200Mb/s in 40Mhz - and will often limit the number of
customers on that 200Mb/s AP to a dozen or so.

You need to be aware that the industry has grown up a LOT in the last
4-5 years, but like in any industry there are bad and good operators.
 Some do fit into the category you're describing, but from what I can
see a large portion of them do know how to deliver a lot of bandwidth.

In addition, many WISP's are now also trenching fiber to the home
where it makes sense, and deploying fixed wireless where it doesn't.
Often the fiber trenching is being driven by those sites where the
aggregate customer bandwidth needs do outstrip the capability of the
wireless network.

--
- Forrest