Re: [ipwave] draft-ietf-ipwave-ipv6-over-80211ocb-00 RSU term

[Rex Buddenberg <[e-mail]>]

Box <> function.

If you understand the fragility and warts in radionav systems (GPS,
Galileo, Glonass, Loran) then differential overlays to these systems
makes a lot of sense.  And the most attractive place to put the
differential reference receivers is in the roadside boxes.  The
reference receiver function is a sensor function, not a routing one.
But probably belongs in the same box.


On Fri, 2017-02-10 at 12:49 +0100, Jérôme Härri wrote:
> Hi Alex,
> 
> It could actually be two different terms, depending of what we want
> to say in the draft. The RSU is no longer a pure C-ITS name, as even
> LTE-V2X adopted the LTE-UE operating in RSU mode for LTE-V2V
> communications (meaning you do not need to be a eNB/base station to
> be a RSU). 
> I would tend to think that the RSU is more a function/service than an
> actual technology...but as I think the debate could be complex and
> suggest to follow Michelle suggestion to keep the RSU as a 'bigger'
> entity, and if you need it, a RSR as a potential sub-set of a RSU. As
> Michelle said, a RSU is not a router  by default...
> 
> BR,
> 
> Jérôme
> 
> -----Original Message-----
> From: its [mailto:[e-mail]] On Behalf Of Alexandre
> Petrescu
> Sent: Friday 10 February 2017 12:37
> To: Michelle Wetterwald
> Cc: [e-mail]
> Subject: Re: [ipwave] draft-ietf-ipwave-ipv6-over-80211ocb-00 RSU
> term
> 
> Hi Michelle,
> 
> Thank you for the suggestion.
> 
> But making RSR a component of RSU is different than making RSU a
> component of RSR, right?
> 
> Despite the widespread belief that RSU would have something to do
> with IP and Internet, rarely if ever was there an RSU connected to
> Internet that forwarded IP packets - most RSUs are disconnected from
> the Internet (the supposedly 'slaves' at FHWA) and the ones that are
> connected to the Internet (supposedly the 'masters' at FHWA) are so
> only in order to be SNMP-managed remotely, but not to forward.
> 
> If we know of some RSU which has this 'forwarding' flag set to 1,
> then we should talk about it, and call it a Router.
> 
> The "ITS station" term is not a term at IETF.  We could re-use the
> term "ITS station", but I would like to know whether "ITS Station" is
> a Router or a Host?
> 
> Yours,
> 
> Alex
> 
> Le 10/02/2017 à 12:18, Michelle Wetterwald a écrit :
> > 
> > Hi Alex,
> > 
> > Actually, an RSU is generally more than an RSR as it is an ITS
> > station 
> > per se and may contain upper (e.g. service or even
> > application) layers. I suggest to keep the definition of RSU in
> > the 
> > text, as it is a widely used term, but clarify that an RSR could
> > be 
> > one of the components of an RSU.
> > 
> > Best regards, Michelle
> > 
> > 2017-02-10 11:34 GMT+01:00 Alexandre Petrescu 
> > <[e-mail]
> > <mailto:[e-mail]>>:
> > 
> > draft-ietf-ipwave-ipv6-over-80211ocb-00 RSU term
> > 
> > Hello IPWAVErs,
> > 
> > We received multiple comments about the RSU term.  The strongest
> > issue 
> > is that apparently there are conflicts between our assumption of
> > RSU 
> > to be a router and FHWA(?) thinking RSU is more like an interface
> > to a 
> > router, or something like a master-RSU controlling
> > (slave?) RSUs. Unless FHWA tells us they agree RSU is a router, I
> > will 
> > modify the following:
> > 
> > Old:
> > 
> > 2.  Terminology
> > 
> > [...]
> > 
> > RSU: Road Side Unit.
> > 
> > 
> > New:
> > 
> > RSR: Road Side Router; an IP router equipped with, or connected to,
> > at 
> > least one interface that is 802.11 and that is an interface that 
> > operates in OCB mode.
> > 
> > 
> > and substitute RSR for RSU throughout.
> > 
> > This old 'RSU' term, now RSR, is absolutely needed in the draft
> > when 
> > discussing IP handovers and Mobile IP.
> > 
> > Alex
> > 
> > 
> > _______________________________________________ its mailing list 
> > [e-mail] <mailto:[e-mail]> 
> > https://www.ietf.org/mailman/listinfo/its
> > <https://www.ietf.org/mailman/listinfo/its>
> > 
> > 
> > 
> > 
> > -- Michelle Wetterwald [e-mail] 
> > <mailto:[e-mail]>
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