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Re: [6gip] 6G

Lars Eggert <lars@eggert.org> Thu, 14 January 2021 08:53 UTC

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From: Lars Eggert <lars@eggert.org>
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Date: Thu, 14 Jan 2021 10:52:53 +0200
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Cc: Kaippallimalil John <john.kaippallimalil@futurewei.com>, "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>, "6gip@ietf.org" <6gip@ietf.org>
To: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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Subject: Re: [6gip] 6G
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Hi,

On 2021-1-14, at 10:37, Alexandre Petrescu <alexandre.petrescu@gmail.com> wrote:
> It might be set that the bandwidth is 500Gbit/s and that RTT latency on
> the air 1 micro-second.

that's pretty much where we are with datacenter technology today.

The limits here are due to physical constraints - the speed of light in vacuum is about 300000 km/sec. An RTT of 1us means that the maximum distance to a base station needs to be below 150m. (Not including coding overheads, etc.)

Unless you claim that "6G" will be a radio LAN, I don't think these assumptions are sensible.

Lars

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