[Starlink] musk: 28ms median latency on starlink

[Alexandre Petrescu]

Le 02/06/2024 à 19:13, Dave Taht via Starlink a écrit :
> Via elon musk:
>
> Starlink just achieved a new internal median latency record of 28ms 
> yesterday! Great work by the engineering and operations teams.

It is indeed excellent news to hear that they achieve such a low 
latency.  It is worth noting.

In addition to fq_codel, cake and libreqos (acronyms I simply cite), if 
I may speculate how to further decrease the latency:

- lower the sat altitudes, maybe at 350km or even at 70km. These are 
altitudes where starlink sats seem parked at times, maybe right before 
reaching their stable 500km altitudes.  It means they can stay there, 
maybe for a shorter time than the times they stay at 500km, but still, 
for some time.

- make the antennas on the sats more 'wide-angle' so to speak, such as 
to make multiple spots on the ground, possible very distanced, rather 
than one single spot straight below the sat.

- add sat-to-HAP links. (high-alti platforms, i.e. 20km-to-70km), 
sat-to-plane, sat-to drone links (altitudes 500m-20km).

- add sat-to-other-constellations' sats links.

- have a dynamic IP routing system between sats and HAPS naturally 
finding shortest paths, i.e. lowest latencies.

I think one could target a 1ms latency.

Alex

>
> - https://twitter.com/elonmusk/status/1797282250574184587
>
> I of course, am very interested in y'all´s external measurements of 
> how well starlink is doing. For me, it is fantastic - 30Mbit uploads 
> nowadays, 0
> latency on the upload (how?) 
> https://www.waveform.com/tools/bufferbloat?test-id=2a1d139b-87cb-4ba4-a829-e2167801cffe
>
> I also keep hoping that the rest of the ISP industry is now paying 
> attention and deploying stuff like fq_codel and cake and libreqos, 
> but, ah well - I will settle for starlink blowing past a lot of dsl 
> and cable and finding ways to get their density up.
>
> Anyone going to the Starship launch on the 6th?
>
>
>
> -- 
> https://www.youtube.com/watch?v=BVFWSyMp3xg&t=1098s 
> <https://www.youtube.com/watch?v=BVFWSyMp3xg&t=1098s> Waves Podcast
> Dave Täht CSO, LibreQos
>
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