RE: [Geopriv] Re: Review of draft-linsner-geopriv-relativeloc-01.txt

From: Brian Rosen ^lt;br@brianrosen.net>
Date: Wed Nov 28 2007 - 11:30:21 EST

You can provide a very high quality reference point and a relatively low
quality offset. It's very useful to know that detail.

I don't personally know of a specific implementation that uses a geo
reference. It seems pretty obvious to me that it's useful.

Brian

> -----Original Message-----
> From: Marc Linsner [mailto:mlinsner@cisco.com]
> Sent: Wednesday, November 28, 2007 11:27 AM
> To: 'Brian Rosen'
> Cc: geopriv@ietf.org
> Subject: RE: [Geopriv] Re: Review of draft-linsner-geopriv-relativeloc-
> 01.txt
>
> Brian,
>
> I'm trying to figure out if geo reference + offset is actually in use or
> deployed applications have gone with simply doing the math and provide the
> actual location in geo. With a reference point described using geo, it's
> pretty easy to figure out the geo coordinates of the offset.
>
> Do you know?
>
> -Marc-
>
>
>
> > -----Original Message-----
> > From: Brian Rosen [mailto:br@brianrosen.net]
> > Sent: Wednesday, November 28, 2007 10:30 AM
> > To: 'Hannes Tschofenig'; 'Marc Linsner'
> > Cc: geopriv@ietf.org
> > Subject: RE: [Geopriv] Re: Review of
> > draft-linsner-geopriv-relativeloc-01.txt
> >
> > FWIW I do agree that the reference+offset is generally useful
> > and the reference should be either geo or civic
> >
> > Brian
> >
> > > -----Original Message-----
> > > From: Hannes Tschofenig [mailto:Hannes.Tschofenig@gmx.net]
> > > Sent: Wednesday, November 28, 2007 10:22 AM
> > > To: Marc Linsner
> > > Cc: geopriv@ietf.org
> > > Subject: [Geopriv] Re: Review of
> > > draft-linsner-geopriv-relativeloc-01.txt
> > >
> > > Hi Marc,
> > >
> > > > 2) In order to better understand the use case for expressing the
> > > reference
> > > > point as geo, can you provide real-world applications?
> > > >
> > >
> > > Consider the question in a different fashion: LLDP-MED allows to
> > > distribute the location information of an AP. It is able to provide
> > > civic and geodetic information.
> > >
> > > One could argue that the reference location is the location
> > of the AP.
> > >
> > > Following your line of argument one could claim that
> > geodetic location
> > > information in LLDP-MED for the APs location is not a useful
> > > deployment option. I am not sure about this line of
> > argument. Hence, I
> > > believe we need both.
> > >
> > > Ciao
> > > Hannes
> > >
> > > Btw, DHCP-civic has a what field. How would you set it for relative
> > > location?
> > > - the location of the network element believed to be closest to the
> > > client (a value of 1), or
> > > - the location of the client (a value of 2)
> > >
> > > Is the registration of new value for the 'what' field necessary?
> > >
> > >
> > >
> > > _______________________________________________
> > > Geopriv mailing list
> > > Geopriv@ietf.org
> > > https://www1.ietf.org/mailman/listinfo/geopriv

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Received on Wed, 28 Nov 2007 11:30:21 -0500

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