While far from a complete analysis, a 100Gb/s fiber SFP (DSP & optics)
is under 1W over 2Km, more like 800mW today. And optics powers are being
driven down further to increase the MTBF, mostly driven by data center
markets where electricity costs matter.
The DSP and the power amplifiers per front end module and radios for a
WiFi wireless system is much higher. That's part of my argument for
fiber through the home to remote radio heads with FiWi.
Bob
I admittedly know little about the service from the radio out in FWA
deployments like this but have done a lot of work in the aggregation
and backhaul arenas in both environments. The advantage the FWA folks
have is that it is significantly more financially viable to not
oversubscribe (or oversubscribe less) when you deliver more users from
a more centralized next hop location. In other words, it’s easier
and cheaper to have 100 Gbps serving 1000 users from a single location
than it is to have 1 Gbps serving 10 users from 100 different
locations. Which is not to say that there aren’t other challenges in
FWA environments relative to FTTx environments, but system capacity
(you can always add more radios, with enough available spectrum, at
least) isn’t one of them.
Dave Cohen
[email protected]
On Oct 5, 2023, at 6:17 PM, Dick Roy via Nnagain
<[email protected]> wrote:
Has anyone done an analysis of the capacity of FWA systems (in
bits/sec/Hz/km^3)???? I am suspicious that the capacity falls way
short of that which cable guys have at their disposal, and that as
the FWA networks get loaded, performance is going to degrade
dramatically ultimately resulting in churn back to the cable guys.
It's very expensive to compete with already sunk FTTH or even FTTC.
RR
-----Original Message-----
From: Nnagain [mailto:[email protected]] On
Behalf Of Livingood, Jason via Nnagain
Sent: Thursday, October 5, 2023 1:25 PM
To: Network Neutrality is back! Let´s make the technical aspects
heard this time!
Cc: Livingood, Jason
Subject: Re: [NNagain] On "Throttling" behaviors
On 10/4/23, 13:45, "Nnagain on behalf of David Lang via Nnagain"
<[email protected]
<mailto:[email protected]> on behalf of
[email protected]
<mailto:[email protected]>> wrote:
It's an unfortunate fact of reality that the enviornment in the US
is one where
there is very little competition in the ISP space
The SEC 10-K filings of ISPs no longer support that. Most wireline
ISPs are losing subscribers (at material levels) to one of the three
new national 5G FWA ISPs (Verizon, T-Mobile, AT&T). In addition, we
will in a few years see the effects of $45B+ of grant money
dedicated to underwrite new broadband access network construction -
that is also pretty material.
Per
https://telecoms.com/523519/growth-in-5g-fwa-kit-matches-operator-hype/
- " 5G FWA customer premises equipment shipments more than doubled
to 7.4 million last year and should reach 13.8 million – that’s
86% growth – this year "
- " The GSA survey shows overall FWA CPE shipments of 25.5 million
units last year, "
- " Statistics shared by Leichtman Research Group recently showed
that T-Mobile and Verizon together recorded the best part of 900,000
5G FWA net adds in the second quarter of this year, significantly
more than the virtually flat cable segment and ahead of the wireline
broadband market, which lost almost 62,000 customers in the three
months. "
JL
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