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<div class="moz-cite-prefix">On 10/06/2024 2:38 pm, David Lang via
Starlink wrote:<br>
</div>
<blockquote type="cite" cite="mid:qn3ro633-q7n7-1oq4-5295-s01on981ss5s@ynat.uz"><br>
the V2 were about 8-10x the capacity of the V1.5 (the ones they
could launch 50-60 per flight), the v2 mini they have been
launching (~22/flight) are about midway between the two. No recent
word on the V2s, but Tim Dodd did another starbase visit with Elon
before the flight, so watch for that to show up soon.
<br>
</blockquote>
<p>I think it'd be useful we could agree on what we mean by
"capacity" before we start throwing numbers around, especially
relative ones. For Starlink, I can think of the following
capacities (yes, plural):</p>
<ul>
<li>User up-/downlink capacity from/to a single user. (How many
bits/s can I throw at a Dishy?)<br>
</li>
<li>Downlink capacity to all users in a single cell (under the
proviso that we don't have any users in adjacent cells that need
/ want service - think small island in the middle of the
Pacific).</li>
<li>Overall user downlink capacity from a single satellite to
multiple cells. (Can't deploy co-frequency beams with identical
polarisation to the same cell if you have multiple such beams on
your bird, but can do so if we can aim them at different cells)<br>
</li>
<li>Gateway uplink capacity (to users served directly by the
satellite or indirectly via ISLs)</li>
<li>Gateway downlink (from users served directly by the satellite
or indirectly via ISLs)</li>
<li>Dto. per gateway (see co-frequency beam issue)<br>
</li>
<li>Processing capacity: Number of bits / s that a satellite can
pump between its receive beams / incoming ISLs and transmit
beams / outgoing ISLs.</li>
</ul>
<p>It's getting late and I probably forgot one or two ;-)<br>
</p>
<br>
--
<pre class="moz-signature" cols="72">****************************************************************
Dr. Ulrich Speidel
School of Computer Science
Room 303S.594 (City Campus)
Ph: (+64-9)-373-7599 ext. 85282
The University of Auckland
<a class="moz-txt-link-abbreviated" href="mailto:ulrich@cs.auckland.ac.nz">ulrich@cs.auckland.ac.nz</a>
<a class="moz-txt-link-freetext" href="http://www.cs.auckland.ac.nz/~ulrich/">http://www.cs.auckland.ac.nz/~ulrich/</a>
****************************************************************</pre>
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