<div dir="ltr">I think making WiFi tech accessible to students is a very good thing. That students make mistakes is also a good thing. I understand the frustration though.<br><br>I've recently rolled out a <a href="https://www.l4sgear.com/">raspberry pi 4 crib sheet</a> on how to build an L4S capable device. It's a fun project and comes in at around $100 U.S. Throw in some switches, USB WiFi cards, ethernet for control, a GPS hat for pulse per second, use iperf 2 and pyflows. All for less than $500. <br><br>The expensive part is placing the <a href="https://vaunix.com/digital-phase-shifters/">RF under control</a> but that's doable too - though likely in the few thousands of dollars and maybe just a bit more. <a href="https://youtu.be/PNoUcQTCxiM">The math is already done thanks to those studying molecular evolution</a>.<br><br>Bob</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 19, 2023 at 5:30 PM Dave Taht via Make-wifi-fast <<a href="mailto:make-wifi-fast@lists.bufferbloat.net">make-wifi-fast@lists.bufferbloat.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">It is hard to contain my disappointment that a modern work on wifi,<br>
that even mentions bufferbloat, could have missed our work on fixing<br>
wifi (such as "ending the anomaly", now the default APIs in the linux<br>
kernel), and make claims for the emulator that are so completely<br>
wrong, and further claim that the behaviors matched a real world AP.<br>
<br>
re: <a href="https://mdpi-res.com/d_attachment/futureinternet/futureinternet-15-00246/article_deploy/futureinternet-15-00246.pdf?version=1689771540" rel="noreferrer" target="_blank">https://mdpi-res.com/d_attachment/futureinternet/futureinternet-15-00246/article_deploy/futureinternet-15-00246.pdf?version=1689771540</a><br>
<br>
Can I suggest strongly to the authors that they try to understand rate<br>
vs range vs buffering, the intersection of the half duplex txop<br>
infrastructure with multiple stations, the side effects of<br>
aggregation, and other scheduling difficulties mininet does not come<br>
even close to handling?<br>
<br>
20 packet buffers?? A more typical number is much greater.<br>
Test through walls or at distance?<br>
<br>
Here are 4 resources that might help deepen your understanding.<br>
<br>
<a href="https://www.youtube.com/watch?v=Rb-UnHDw02o&t=1532s" rel="noreferrer" target="_blank">https://www.youtube.com/watch?v=Rb-UnHDw02o&t=1532s</a> (10 minutes here,<br>
but do the whole thing)<br>
<a href="https://bufferbloat-and-beyond.net/" rel="noreferrer" target="_blank">https://bufferbloat-and-beyond.net/</a><br>
<a href="https://www.cs.kau.se/tohojo/airtime-fairness/" rel="noreferrer" target="_blank">https://www.cs.kau.se/tohojo/airtime-fairness/</a><br>
<a href="https://blog.cerowrt.org/post/minstrel/" rel="noreferrer" target="_blank">https://blog.cerowrt.org/post/minstrel/</a><br>
<br>
-- <br>
Podcast: <a href="https://www.linkedin.com/feed/update/urn:li:activity:7058793910227111937/" rel="noreferrer" target="_blank">https://www.linkedin.com/feed/update/urn:li:activity:7058793910227111937/</a><br>
Dave Täht CSO, LibreQos<br>
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