[NNagain] On "Throttling" behaviors

[rjmcmahon]

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
> craetdave at gmail.com
> 
>> On Oct 5, 2023, at 6:17 PM, Dick Roy via Nnagain
>> <nnagain at lists.bufferbloat.net> 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:nnagain-bounces at lists.bufferbloat.net] 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"
>> <nnagain-bounces at lists.bufferbloat.net
>> <mailto:nnagain-bounces at lists.bufferbloat.net> on behalf of
>> nnagain at lists.bufferbloat.net
>> <mailto:nnagain at lists.bufferbloat.net>> 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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