[Cerowrt-devel] dlte

[David P. Reed]

Conquer the spectrum licensing and device certification nexus. Or else your cell is will pwn yr physical world.

LTE over UNII band is not even as good as CSMA at sharing and cooperation, and without coordination at installation planning time, it doesn't work well.

802.11ax has the same fragility in Multi Unit Dwellings due to requiring a radio propagation plan and coordination so neighbors don't completely jam neighbors.

Don't obsess about throughput at the link layer, when the design assumes exclusive rights to transmit.

There are techniques for cooperative space-time-rate multiplexing that scale. LTE licensed or unlicensed or 802.11ax are not such techniques.

Small cells are a fantasy of the carriers that they can put their licensed gear on your property at points they choose. Technically it appears to work in an abstract fantasy prototype. In the real world, it can't scale unless you let the phone company invade your premises and control all your placement of furniture, doors, mirrors, etc.

----Original Message-----
From: "Toke Høiland-Jørgensen" <toke at toke.dk>
Sent: Fri, Dec 7, 2018 at 4:08 am
To: "Dave Taht" <dave at taht.net>
Cc: "Dave Taht" <dave at taht.net>, "cerowrt-devel" <cerowrt-devel at lists.bufferbloat.net>
Subject: Re: [Cerowrt-devel] dlte

Dave Taht  writes:

> Toke Høiland-Jørgensen  writes:
>
>> Mikael Abrahamsson  writes:
>>
>>> On Tue, 4 Dec 2018, Dave Taht wrote:
>>>
>>>> I expect dave reed to comment, so I'll withhold mine for now
>>>>
>>>> https://kurti.sh/pubs/dLTE-Johnson-HotNets-2018.pdf
>>>
>>> When I read the first page I was hopeful, then unfortunately I got 
>>> disappointed and just quickly scanned the rest. It's still tunneled and 
>>> the same architecture, just more distributed.
>>
>> OK, now I read the paper, and I think you may have missed the part where
>> they say that they terminate the tunnelling at the AP and assign new IPs
>> whenever a client roams. So it's basically WiFi APs over the LTE
>> layer-2... Which is pretty cool, I think :)
>
> It's still based on the false optimism that users will ever get to own
> and control their own LTE AP.

Well, they did say they had done proof of concept tests; and that they
could build a base station for $8000... So might not be completely
impossible...

-Toke
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