Re: [6gip] wanted to ask as a software engineer

[Alexandre Petrescu <[e-mail]>]

I run my own tests too.  It is from someone's 5G smartphone on Free 
mobile operator at 3640-3710MHz band, with speedtest app on android.

APN IPv4: DL 224mbit/s, UL 8.24mbit/s, RTT 39ms.
APN IPv6: DL 178mbit/s, UL 14.9mbit/s, RTT 55ms.

There were a few minutes between the two tests.

(in theory, an APN IPv6 would only give an IPv6 address to the 
smartphone, but whatismyip shows I have an IPv4 address too even if on 
an APN of type IPv6; this is contrary to intuitition, because it does 
not allow to say whether the speeedtest while on APN IPv6 was an IPv6 
speedtest or an IPv4 speedtest; on another hand, while on an APN IPv4 
one is sure there is no IPv6 whatsoever).

The user experience on 5G is that I felt the download was really fast 
when I downloaded the 50mbyte speedtest app from Google Play.

Alex

Le 16/07/2022 à 15:56, Alexandre Petrescu a écrit :
> 
> 
> Le 13/07/2022 à 17:37, Simon Leinen a écrit :
>> Alexandre Petrescu writes:
>>> Do you know what bandwidth is possible on a 5G smartphone?
>>> (browse www.speedtest.net from a 5G smartphone)
>>
>> Some numbers from the real world:
>>
>> I've been doing a few tests with the Ookla Speedtest app on my Google
>> Pixel 6 phone when connected to 5G service on one of the Swiss mobile
>> networks (Sunrise/Yallo).
>>
>> The download rates are often 250-300Mb/s.  Upload rates are much lower,
>> typical values are 20Mb/s, but I have seen as low as 5Mb/s even when
>> downloads are as fast as mentioned.  (OK, 5Mb/s is not too shabby, but
>> the down/upload discrepancy impresses me.)
> 
> Thanks for the figures.
> 
> This 250-300mb/s looks high to me, used to a 4G max around 50mbit/s.
> 
> I will try to identify my own figures, but I have to ask someone close 
> for a 5G smartphone to try.  I dont myself have a smartphone.
> 
>> The base RTT is relatively low (10-20ms), but can easily grow to
>> 300-1000ms during download and (especially) upload tests.
> 
> Thanks for this report.
> 
> For comparison, I did hear about a minim 20ms on a satellite LEO 
> Internet link (Starlink).  This is a point of jonction.
> 
>>
>> Sunrise seems to be using the 700, 1400, and 3500MHz bands for 5G.
>> [citation needed]
> 
> I suspect the highest bandwidth is in the 3500MHz bands.
> 
> Alex
> 
>>
>> Cheers,
>