[Standards] We need to extend XEP-0080. (XMPP and Next Generation 9-1-1 / i3 / geolocation)

Corey Wysong cwysong at indigital.net
Mon Apr 2 21:55:13 UTC 2012


I am very interested in this discussion. I would also like to see XEP-0080
be extended or a new "Advanced GEOLocation" XEP be written. It is very
important that location is correct when using a 911 application on any
device using XMPP.


Corey Wysong

On Mon, Apr 2, 2012 at 5:40 PM, Mark Rejhon <markybox at gmail.com> wrote:

> Hello,
> I think we need to make an extension to XEP-0080 to be sufficiently
> complete enough for use with Emergency Service (9-1-1), which often require
> handling of non-circular-shaped estimated location data.  (So this is more
> advanced than the "circle estimate" you see on map apps on
> smartphones).
> According to this IETF draft
> Emergency Services Functionality with the Extensible Messaging
> and Presence Protocol (XMPP)
> http://tools.ietf.org/html/draft-tschofenig-ecrit-xmpp-es-00
> --------
>   Location Conveyance:
>      The ability to convey a PIDF-LO and a location by reference in
> SIP had been defined by [RFC6442].  For a single call there may be more
> than one location object in a call.
>   While there is a location extensions available in XMPP with XEP-0080 it
> is not equivalent to the functionality listed above.  XEP-0080 offers a
> different civic location format and geodetic location based on a reduced
> set of loation shapes.  It uses an XML encoding and allows this information
> to be conveyed in XMPP.  *A table with a mapping to the PIDF-LO semantic
> is provided in XEP-0080 but unfortunately since the functionality is not
> equivalent to the list presented above there will be a loss of informationduring the lifecyle of location handling in most of the scenarios.
> *
> --------
> Notice the phrase "a loss of information" -- unacceptable in the name of
> public safety (i.e. lost in the forest or lost at sea)
> And it will be getting much more complex, with i3 having much more complex
> geolocation requirements. My contacts are starting to ask me about an XMPP
> specification they can use.  Because of the migration to Next Generation
> 9-1-1 and Texting-to-9-1-1 (some of which is already being trialled over
> XMPP), there is potentially a lot of companies that are going to demand
> this in the next few years, including one that I work with.   (Note, some
> of it is done over SIP, but other trials go over XMPP as shown in the
> diagrams in the IETF draft.
> It would thus, be pertinent to extend XEP-0080 in the name of public
> safety.
> Alternatively, if this is overkill and makes XEP-0080 too complex, then a
> separate "XEP-0XXX: Advanced Geolocation" should be made, which could be a
> superset of XEP-0080 general purpose geolocation.
> This is actual demand for an actual need.
> Sincerely,
> Mark Rejhon
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