Re: [ipwave] 5G deployment status

[Alexandre Petrescu <[e-mail]>]

Hi,

Le 17/10/2019 à 11:23, Andre Puschmann a écrit :
> Hi,
> 
> On 16/10/19 17:04, Alexandre Petrescu wrote:
>> I would like to ask you many things, but first things first:
>>
>> - C-V2X support in srsUE would be V2X messages sent on IP?  Or would it
>> be V2X messages put straight on link-layer (without IP headers)?
> 
> PDCP, being the highest of the 3GPP layers, allows to carry IP and
> non-IP traffic.

Noted.

> We are radio people ourselves so no big exports in ITS stacks. IMHO, the
> the GeoNetworking is always nonIP.

I agree GeoNetworking is always nonIP, because ETSI never carries 
GeoNetworking over IP (but ETSI does carry IP over GeoNetworking).  At 
the same time, let me try to remind, if I recollect correctly, that the 
3GPP specs do not use ETSI GeoNetworking, even if PDCP could carry them, 
and even if 3GPP specs use CAM messages.

By 'V2X' I meant CAM messages without GeoNetworking headers, nor BTP 
headers.  CAM messages have a certain syntax (available publicly) that 
does not depend on the use of GeoNetworking or BTP headers.  It is 
possible - and people actually do - to send CAM messages without 
GeoNetworking headers nor BTP headers.

So, I am asking you whether srsUE would send CAM messages like which of 
the options below?

CAM               CAM           CAM
---               ---           ---
BTP               IP            PDCP
---               ---           ---
GeoNetworking     PDCP          OFDM
---               ---
PDCP              OFDM
---
OFDM


Alex

> 
> Best
> Andre
>