<div dir="ltr">The whole article is worth reading, but tl;dr;<div><br></div><div><p id="ember21385" class="ember-view gmail-reader-content-blocks__paragraph" style="box-sizing:inherit;margin:1.6rem 0px;line-height:1.75;color:rgba(0,0,0,0.9);font-family:-apple-system,system-ui,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Fira Sans",Ubuntu,Oxygen,"Oxygen Sans",Cantarell,"Droid Sans","Apple Color Emoji","Segoe UI Emoji","Segoe UI Emoji","Segoe UI Symbol","Lucida Grande",Helvetica,Arial,sans-serif">"The promise of D2D is alluring – that we can be connected wherever we are – no more not-spots and the certainty of always being able to contact others. But the reality is some way from this. The only existing D2D service is Apple’s iPhone emergency communications which offers messaging to the emergency services and vehicle assistance in 16 countries. This does not appear to be a service Apple thinks it can charge for at present.</p><p id="ember21386" class="ember-view gmail-reader-content-blocks__paragraph" style="box-sizing:inherit;margin:1.6rem 0px;line-height:1.75;color:rgba(0,0,0,0.9);font-family:-apple-system,system-ui,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Fira Sans",Ubuntu,Oxygen,"Oxygen Sans",Cantarell,"Droid Sans","Apple Color Emoji","Segoe UI Emoji","Segoe UI Emoji","Segoe UI Symbol","Lucida Grande",Helvetica,Arial,sans-serif">Those offerings that have the greatest potential for ubiquity are within the MSS spectrum. But here bandwidths are too constrained to deliver full service capabilities. Other MSS operators such as Iridium have struggled to put together a commercial D2D proposition (although their core business remains strong).</p><p id="ember21387" class="ember-view gmail-reader-content-blocks__paragraph" style="box-sizing:inherit;margin:1.6rem 0px;line-height:1.75;color:rgba(0,0,0,0.9);font-family:-apple-system,system-ui,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Fira Sans",Ubuntu,Oxygen,"Oxygen Sans",Cantarell,"Droid Sans","Apple Color Emoji","Segoe UI Emoji","Segoe UI Emoji","Segoe UI Symbol","Lucida Grande",Helvetica,Arial,sans-serif">The other approach of using MS spectrum has strong backers in the form of SpaceX and T-Mobile as well as multiple promising start-ups. But it is beset with challenges of avoiding interference with existing terrestrial use, overcoming restrictions in border areas, ensuring compliance with hundreds of regulators, of which only one has a defined policy towards D2D at present, doing deals with hundreds of operators and managing other regulatory hurdles. Only US-based coverage looks likely any time soon and the true extent of that remains unclear.</p><p id="ember21388" class="ember-view gmail-reader-content-blocks__paragraph" style="box-sizing:inherit;margin:1.6rem 0px;line-height:1.75;color:rgba(0,0,0,0.9);font-family:-apple-system,system-ui,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Fira Sans",Ubuntu,Oxygen,"Oxygen Sans",Cantarell,"Droid Sans","Apple Color Emoji","Segoe UI Emoji","Segoe UI Emoji","Segoe UI Symbol","Lucida Grande",Helvetica,Arial,sans-serif">With limited offers, the consumer interest will be less. Quite how much less is very unclear, but it is clear that the business case will be challenging. Most consumers appear to have limited interest in paying more per month for better coverage.</p><p id="ember21389" class="ember-view gmail-reader-content-blocks__paragraph" style="box-sizing:inherit;margin:1.6rem 0px;line-height:1.75;color:rgba(0,0,0,0.9);font-family:-apple-system,system-ui,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Fira Sans",Ubuntu,Oxygen,"Oxygen Sans",Cantarell,"Droid Sans","Apple Color Emoji","Segoe UI Emoji","Segoe UI Emoji","Segoe UI Symbol","Lucida Grande",Helvetica,Arial,sans-serif">In summary, D2D’s alluring promise of ubiquitous fully-featured global connectivity is not likely to be realised any time soon, if ever, but a reduced service level in a few countries may be sufficient to justify launching suitable satellites."</p><br class="gmail-Apple-interchange-newline" style="color:rgb(0,0,0)"><br class="gmail-Apple-interchange-newline"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>All the best,</div><div><br></div><div><p class="MsoNormal" style="color:rgb(34,34,34)">Frank<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">Frantisek (Frank) Borsik<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><u></u> <u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><a href="https://www.linkedin.com/in/frantisekborsik" style="color:rgb(17,85,204)" target="_blank">https://www.linkedin.com/in/frantisekborsik</a><u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">Signal, Telegram, WhatsApp: +421919416714 <u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">iMessage, mobile: +420775230885<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)">Skype: casioa5302ca<u></u><u></u></p><p class="MsoNormal" style="color:rgb(34,34,34)"><a href="mailto:frantisek.borsik@gmail.com" style="color:rgb(17,85,204)" target="_blank">frantisek.borsik@gmail.com</a></p></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jun 4, 2024 at 1:43 PM Alexandre Petrescu via Starlink <<a href="mailto:starlink@lists.bufferbloat.net">starlink@lists.bufferbloat.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<p><font size="2" face="Courier New">does it say whether it is text
only, data only, or everything including voice?</font><br>
</p>
<div>Le 04/06/2024 à 13:20, Frantisek Borsik
via Starlink a écrit :<br>
</div>
<blockquote type="cite">
<div dir="ltr">Some additional reading from William Webb:
<div><br>
</div>
<div><a href="https://www.linkedin.com/pulse/satellite-direct-device-workable-william-webb-sonke/?trackingId=Sjha4DY8SqONFA9g%2Bb5b%2Bw%3D%3D" target="_blank">https://www.linkedin.com/pulse/satellite-direct-device-workable-william-webb-sonke/?trackingId=Sjha4DY8SqONFA9g%2Bb5b%2Bw%3D%3D</a></div>
<div><br clear="all">
<div>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div>All the best,</div>
<div><br>
</div>
<div>
<p class="MsoNormal" style="color:rgb(34,34,34)">Frank</p>
<p class="MsoNormal" style="color:rgb(34,34,34)">Frantisek
(Frank) Borsik</p>
<p class="MsoNormal" style="color:rgb(34,34,34)"> </p>
<p class="MsoNormal" style="color:rgb(34,34,34)"><a href="https://www.linkedin.com/in/frantisekborsik" style="color:rgb(17,85,204)" target="_blank">https://www.linkedin.com/in/frantisekborsik</a></p>
<p class="MsoNormal" style="color:rgb(34,34,34)">Signal,
Telegram, WhatsApp: +421919416714 </p>
<p class="MsoNormal" style="color:rgb(34,34,34)">iMessage,
mobile: +420775230885</p>
<p class="MsoNormal" style="color:rgb(34,34,34)">Skype:
casioa5302ca</p>
<p class="MsoNormal" style="color:rgb(34,34,34)"><a href="mailto:frantisek.borsik@gmail.com" style="color:rgb(17,85,204)" target="_blank">frantisek.borsik@gmail.com</a></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Jun 4, 2024 at 2:54 AM
David Lang <<a href="mailto:david@lang.hm" target="_blank">david@lang.hm</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Eugene
Y Chang wrote:<br>
<br>
>> On Jun 3, 2024, at 12:41 PM, David Lang <<a href="mailto:david@lang.hm" target="_blank">david@lang.hm</a>>
wrote:<br>
>><br>
>> Eugene Y Chang wrote:<br>
>><br>
>>> I expect low data rate because the distance will
fall back to a lower coding rate.<br>
>><br>
>> I think it's going to be more a matter of very large
cells, so many people sharing the available bandwidth<br>
>><br>
>>> I observe a difference in my phone’s batter life
between urban and rural usage. I expect the battery life to be
significantly reduced with Starlink.<br>
>>> And yes… if the phone isn’t communicating then
the battery life isn’t drawn down much…<br>
>><br>
>> In my experience, a phone that's trying to find a
tower uses more power than one that has a tower, but is
otherwise idle<br>
><br>
> When the phone is searching for a tower, it is
transmitting at maximum power.<br>
> Then, the phone adjusts the transmit power according to
the distance to the tower,<br>
> In an urban environment, the distance to the tower is
usually less (i.e. smaller cells due to subscriber density).<br>
> In a rural environment, there is more distance to the
tower, and the phone is transmitting at higher power (i.e.,
towers are farther apart for larger cells due to fewer
subscribers per tower, up to the max tower separation.)<br>
> When you are mobile, the power is proportionate to the
mean distance to the tower during your operations.<br>
<br>
and for direct-to-satellite, it's going to be a max power
situation, similar to <br>
rural.<br>
<br>
But when a phone is not connected, how frequent are it's
searches for towers <br>
(especially if it has multiple bands to check) compared to the
'keepalive' pings <br>
when it is connected? if it's doing more transmissions for
it's search and <br>
attempts to connect than it does while connected and just
confirming the <br>
connection, that could eat more power.<br>
<br>
David Lang</blockquote>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
Starlink mailing list
<a href="mailto:Starlink@lists.bufferbloat.net" target="_blank">Starlink@lists.bufferbloat.net</a>
<a href="https://lists.bufferbloat.net/listinfo/starlink" target="_blank">https://lists.bufferbloat.net/listinfo/starlink</a>
</pre>
</blockquote>
</div>
_______________________________________________<br>
Starlink mailing list<br>
<a href="mailto:Starlink@lists.bufferbloat.net" target="_blank">Starlink@lists.bufferbloat.net</a><br>
<a href="https://lists.bufferbloat.net/listinfo/starlink" rel="noreferrer" target="_blank">https://lists.bufferbloat.net/listinfo/starlink</a><br>
</blockquote></div>