5G roadblock: labor

Fri Jan 17 10:13:09 UTC 2020

Mark, Shane,

I do agree that listing a 3.5 GHz band of frequencies does not 
necessarily mean it's 5G.

Bu I would like to further clarify, if you permit:

1. From the web: The band 71 (UHF range) seems to be for 4G _and_ 5G. 
Some descriptions on the web say so.

 From the web: the band 42 (3400–3600MHz) is for CBRS in EU and Japan.

 From the web: the band 48 (3550-3700MHz) is for CBRS in US (Citizens' 
band broadband service; I suppose something like voice between trucks)

It is possible to check in 3GPP specs, ETSI specs and ARCEP public 
ambitions, whether or not the bands intended for 5G (and up for auction) 
fall within these frequency bands 71, 42 and 48.  My gut feeling is that 
the answer is yes.

2. You refer to a certain NR protocol.  (NR - New Radio).  It is 
possible to check in 3GPP specs what precisely does it mean an 'NR 
protocol'.  The questions to answer when searching would be something 
like: is it TDD or FDD?  Is it SC-FDMA?  And then compare these terms to 
what the iphone 11 does in these frequency bands.  Maybe iphone 11 does 
TDD in band 48 but does not do SC-FDMA (or something like that).

I am not sure we can say that 'NR protocol' is like a message exchange 
like I know in DHCP for example.

3. you refer to a potential Qualcomm 5G modem in second half of year 
2020.  I wonder whether there are public announcements for them?  Or 
will it be sufficient to firmware upgrade the iphone to make it carry a 
5G label? (like Teslas are updated to software to make them self-driving 
or so; or like with software SIM cards).

4. I wonder whether some existing smartphone on the market (not an 
iphone, maybe a samsung or so) already features an entry in its table 
with a feature that makes it a '5G' smartphone.

Alex

Le 17/01/2020 à 06:05, Mark Tinka a écrit :
> 
> 
> On 16/Jan/20 19:23, Shane Ronan wrote:
> 
>> The iPhone 11 does not have a 5G (NR) capable modem. The 3.5Ghz freq
>> support is for the CBRS bands in the US.
>>
>> Support for 5G is not just a freq band support, it requires a
>> chipset/modem capable of support the NR protocol.
> 
> Yes, exactly.
> 
> Word is Apple should start shipping Qualcomm's 5G modems in 2H'20, and
> its own in 2021.
> 
> Personally, I'm not in any rush to buy a phone with 5G on it. Wi-fi or
> existing 4G/LTE is fine for me.
> 
> I'm due to upgrade my iPhones this year. I'll take whatever they come with.
> 
> Mark.
> 