[opendtv] Re: More fruitless attempts to educate you know who
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 27 Oct 2017 03:42:46 +0000
Craig Birkmaier wrote:
What the hell are you talking about?
The Amsterdam trials have NOTHING to do with competing with FIOS
providers.
The trials you linked to yesterday related to the current fixed
wireless trials do not use Massive MIMO,
Holy crap, are you utterly hopeless, Craig. This response is as idiotic as the
one where you were claiming that no one was pursuing fixed 5G broadband
service, as part of a FiOS upgrade. In all caps, even. I don't need to repeat
again, I trust, that Verizon, AT&T, and Google, have announced that they will
use 5G cellular as a fixed service, to replace their current FTTH service. Same
FiOS infrastructure in the neighborhood, but 5G cellular connection to each
home. They stated this, I didn't make it up.
And, before moving on to the real point of this post, the Amsterdam test *was*
a massive MIMO test, Craig. Quoting: "Massive antennas can handle more data
sessions more powerfully than a standard antenna. According to the operator, it
is more energy efficient. The compact antenna with 64×64 transmitters uses 20
MHz TD-LTE in the 2,600 MHz band. The single antenna can deliver up to 600
Mbps, distributed evenly over many users as its using 3D beam forming."
This was a massive MIMO test! That was the whole point! At these low
frequencies, 2.6 GHz, and let alone 600 MHz, you won't get practical MIMO masts
with hundreds of antennas, but 64 X 64 is a heck of an increase, compared with
4 X 4 or even 8 X 8 that we have maximum, these days.
Your posts are so completely out to lunch that they are, frankly, intolerable.
You seem totally unable to connect the dots, Craig. So here I am, again forced
to ignore all of your posts, and focus only on a couple of very specific
questions, to see if you can be **forced to reason**. Again this time, almost
no prose is needed from you. Just trivially easy answers.
First and most important point. You seem unable to grasp that the aggregate
capacity of a cell, and the physical area covered that cell, are two
independent parameters. A large cell can provide, say, 1 Gb/s aggregate
capacity, and so can a small cell. A large cell would be totally ineffective if
homes are tightly spaced, requiring multiple co-located cells to provide
service. A small cell would be useless in rural settings. So leave the cell
size aside for now. Initially consider only the aggregate capacity question.
This link, which you already saw, provides you with ACTUAL RESULTS, of
T-Mobile's **massive MIMO** scheme, in the 2.6 GHz band.
https://www.3gca.org/t-mobile-make-active-first-massive-mimo-antenna-amsterdam/
1. Just focusing on aggregate capacity per cell, do you have any reason to
believe that a single 5G cell, whatever size cell you prefer, would provide
considerably more aggregate capacity than this massive MIMO 2.6 GHz cell does?
Simple answer, Craig, none of your copious and confused prose. (Hint: Verizon
stated 1 Gb/s aggregate capacity for their 5G fixed cell for FiOS service. No
doubt, being fully aware that not all homes are going to be at an ideal
distance from their towers. Understand what those words mean? Or, quote
something that is drastically different in terms of aggregate capacity for a 5G
cell, and not just blue sky conjecture.)
2. I'm positive that you will fail to show anything of value in #1 above. So,
using the highest aggregate capacity envisioned for this one T-Mobile test, and
forgetting about cell size, how many homes could be served by a single cell?
Use FiOS service as criterion. Even at the smallest bit rate available now for
FiOS, 50 Mb/s symmetric. How many homes can be provided that level of FiOS
service by one cell, Craig? It's a simple division problem. In rural settings,
this could be widely separated farmhouses. In urban settings, closely spaced
homes. Don't worry about size of cell in this question.
3. Now, take an average sized, easily walkable, suburban neighborhood, of
around 500 homes, on 1/4 acre lots. Totally commonplace, a typical place where
Verizon or Google would install a 5G fixed wireless service. How many of these
cell towers would be required, in that one neighborhood, each with the
aggregate capacity of that T-Mobile 2.6 GHz massive MIMO scheme?
4. Is this density of towers in any way similar to current deployments of 3G
and 4G wireless? Provide proof if you think it is. Note: neighborhoods with
townhouses or apartments could create far higher cell tower densities.
Four trivially easy questions to answer, which require at best grade school
arithmetic only, and links as proof that anything assumed here is wrong.
Absolutely no copious prose from you.
And then for good measure, these two trivial questions. This is the link to the
Telecom Act of 1996:
https://transition.fcc.gov/Reports/tcom1996.pdf
Search that documents, to answer these two questions:
5. Is the one and only mention of "broadband," in the 1996 telecom act, used to
describe a telecommunications capability? Yes/no will do.
6. There are multiple mentions of an "information service" in this telecom act.
Is there a single example in which "broadband service," or "advanced telecom
service," are equated with or are defined as an "information service"? Or are
the terms "telecom service" and "information service" listed separately, every
time?
Again, these two questions require NO COPIOUS PROSE to answer, Craig. Just
search in the link, or simple yes/no answers.
Bert
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