Re: [Starlink] SpaceX/Starlink says it's ready for a fall satellite-to-cell service with T-Mobile

[David Lang <david@lang.hm>]

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Eugene Y Chang wrote:

> I expect low data rate because the distance will fall back to a lower coding 
> rate.

I think it's going to be more a matter of very large cells, so many people 
sharing the available bandwidth

> 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.
> And yes… if the phone isn’t communicating then the battery life isn’t drawn down much…

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

> But users with high screen times will have to change their habits.
> — avoid receiving text messages (not under the user’s control)
> — don’t receive email pushes
> — stop all the social media updates, messages, and likes.
> — turn off the apps
> — only use the phone for emergencies.
>
> Who are the intended users?

emergancy communication in areas that currently have zero service, primarily 
text messages, then voice, then low bandwidth data.

David Lang

> Gene
> ----------------------------------------------
> Eugene Chang
> IEEE Life Senior Member
> IEEE Communications Society, Computer Society, & Signal Processing Society,
>    Hawaii Chapter Chair
> IEEE Life Member Affinity Group Hawaii Chair
> IEEE Entrepreneurship, Mentor
> eugene.chang@ieee.org
> m 781-799-0233 (in Honolulu)
>
>
>
>> On Jun 3, 2024, at 11:16 AM, David Lang <david@lang.hm> wrote:
>>
>> This is a fallback that will only be if there is no other coverage, and will be a poor data rate.
>>
>> I would expect that the impact to the phone battery would be less than the phone continually searching for a tower
>>
>> Also, SpaceX has pushed back, according to them this isn't observed interference with their signals, instead they reconfigured a satellite to the direct-to-phone frequencies and were able to detect them
>>
>> we'll see what the real story is.
>>
>> On Mon, 3 Jun 2024, Eugene Y Chang via Starlink wrote:
>>
>>> Date: Mon, 3 Jun 2024 10:47:32 -1000
>>> From: Eugene Y Chang via Starlink <starlink@lists.bufferbloat.net <mailto:starlink@lists.bufferbloat.net>>
>>> Reply-To: Eugene Y Chang <eugene.chang@ieee.org <mailto:eugene.chang@ieee.org>>
>>> To: Frantisek Borsik <frantisek.borsik@gmail.com <mailto:frantisek.borsik@gmail.com>>
>>> Cc: Dave Taht via Starlink <starlink@lists.bufferbloat.net <mailto:starlink@lists.bufferbloat.net>>
>>> Subject: Re: [Starlink] SpaceX/Starlink says it's ready for a fall
>>>    satellite-to-cell service with T-Mobile
>>> I found this line in the article very interesting: The larger 2nd generation SpaceX satellites can connect to the majority of T-Mobile’s 4G and 5G phones over its 1900 MHz spectrum.
>>>
>>> It is exciting a subscriber does not need to buy a new phone.
>>> What is the expected impact to the phone’s battery life?
>>> Any speculations?
>>>
>>> Gene
>>> ----------------------------------------------
>>> Eugene Chang
>>> eugene.chang@ieee.org
>>> o 781-799-0233
>>>
>>>
>>>
>>>
>>>> On Jun 3, 2024, at 8:08 AM, Frantisek Borsik via Starlink <starlink@lists.bufferbloat.net> wrote:
>>>>
>>>> SpaceX & T-Mobile intend to launch direct-to-device (D2D) satellite servicethis fall
>>>> An analyst told us that will give them an 18- to 24-month lead over some rivals
>>>> AT&T & Verizon are still backing AST SpaceMobile as an alternative
>>>>
>>>> https://www.fierce-network.com/wireless/space-x-says-its-ready-fall-direct-satellite-cell-service-t-mobile <https://www.fierce-network.com/wireless/space-x-says-its-ready-fall-direct-satellite-cell-service-t-mobile><https://www.fierce-network.com/wireless/space-x-says-its-ready-fall-direct-satellite-cell-service-t-mobile <https://www.fierce-network.com/wireless/space-x-says-its-ready-fall-direct-satellite-cell-service-t-mobile>>
>>>>
>>>> All the best,
>>>>
>>>> Frank
>>>>
>>>> Frantisek (Frank) Borsik
>>>>
>>>>
>>>>
>>>> https://www.linkedin.com/in/frantisekborsik <https://www.linkedin.com/in/frantisekborsik> <https://www.linkedin.com/in/frantisekborsik <https://www.linkedin.com/in/frantisekborsik>>
>>>> Signal, Telegram, WhatsApp: +421919416714
>>>>
>>>> iMessage, mobile: +420775230885
>>>>
>>>> Skype: casioa5302ca
>>>>
>>>> frantisek.borsik@gmail.com <mailto:frantisek.borsik@gmail.com> <mailto:frantisek.borsik@gmail.com <mailto:frantisek.borsik@gmail.com>>_______________________________________________
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>>>
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