Re: [6gip] continueing the discussion on B5G

[Alexandre Petrescu <[e-mail]>]

Le 08/01/2021 à 16:52, John Grant a écrit :
> On 07/01/2021 22:22, Alexandre Petrescu wrote:
>> 
>> I would expect, by feeling, that latencies in the core network
>> based on Ethernet are hugely lower than latencies in the air.  In
>> that sense, the difference NSA vs SA might not impact the feeling
>> of the end user comparing 5G to 4G or 4G+.
>> 
>> Basically, it is sufficient to download some large file from
>> youtube and highest definition (4K?) and try it first with a 4G
>> text above the 5 bars showing signal quality and then with the 5G
>> text instead.  In theory one should be impressed by the download
>> speed on 5G.
> 
> Are we talking latency or throughput here? And if latency is it round
>  trip latency, where milliseconds can be important in some
> applications, or just the delay between requesting something and the
> content appearing?

It is a good question.  Smaller round or single trip latency and larger
throughput parameters have distinct influence on different apps.  A
youtube watch might not be influenced by the latter but a skype call
might be influenced by the former.

What do you think could be another smartphone easy test to demonstrate
the superiority of 5G over 4G?

Because I think at this time what can be evaluated is a feeling.

The feeling of whether 5G feels faster than 4G to the end user.

It is very easy for some users who have access to 5G smartphones and 5G
deployments to tell whether 5G feels faster than 4G.  In France, these
users are located in a few cities such as Marsilia or Nice and with
operator SFR, but need a 'business' kind of subscription.  In other
countries it might be other operators.

These deployments started in December.

So I wonder how do the 5G users feel about it being faster than 4G?  Is
it _much_ faster than 4G?  Can one download a 4Gb DVD in a few minutes
time?  What does 'google speed test' reply?

What do you think could be another smartphone easy test to demonstrate
the superiority of 5G over 4G?

Alex

>