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Out of Jurisdiction Emergency Routing draft-winterbottom-ecrit-priv-loc-01.txt

Out of Jurisdiction Emergency Routing draft-winterbottom-ecrit-priv-loc-01.txt. James Winterbottom , Hannes Tschofenig, Laura Liess. Device-Centric Emergency Services Model. +---Location Request---+ | (1) | +---+----+ +---V---+

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Out of Jurisdiction Emergency Routing draft-winterbottom-ecrit-priv-loc-01.txt

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  1. Out of Jurisdiction Emergency Routingdraft-winterbottom-ecrit-priv-loc-01.txt James Winterbottom, Hannes Tschofenig, Laura Liess

  2. Device-Centric Emergency Services Model +---Location Request---+ | (1) | +---+----+ +---V---+ | |<--Location--| LIS | | Caller | (2) +-------+ +--------+ | | | ESRP/ | | |----Find Service-------+ | PSAP | +------^-+ (3) | +--------+ | | +--------V----+ ^ | +-----Service----| LoST Server | | | (4) +-------------+ +---+---+ +-------------Call Initiation------------>| VSP | (5) +-------+ Challenges with the approach have been described in http://tools.ietf.org/html/rfc6444

  3. Softswitch-Centric Calling Model +---Location Request---+ | (2) | +---V---+ | | LIS | | +----+--+ +----+----+ | | | +----Location--->| Soft | +--------+ (3) | Switch | | Caller |------Call Initiation------------> | | +--------+ (1) +-+-^---+-+ +-------------+ | | | | LoST Server |<-Find Service--+ | | +------+------+ (4) | | | | | +----------Service--------+ | (5) | +-----------+ | | ESRP/PSAP |<------Call----+ +-----------+ (6) Approach had been explored in various countries, such as UK, Canada, etc. Various challenges exist, such as lack of LoST infrastructure.

  4. Problem Description • Security: One concern is about the possibility of the software of the end device being able to tamper with location. • Privacy: There is the desire to allow location information to be provided to emergency organizations rather than any other party, including the end device or a VSP.

  5. Observations • Rough location information is required to route emergency calls. • The VSP needs the ability to determine the correct LIS to retrieve location information. • The VSP needs the ability to contact a LoST server to acquire routing information from. • The end host does not acquire or convey location to the emergency network. • Access network provider aim to provide location only to emergency service authorities. • Precise location information is required to dispatch first responders.

  6. Our Approach • The VSP queries the LIS using HELD and the IP address of the calling device as an identity extension. • The LIS determines the location and uses it request routing information for the local LoST server. • The LIS return a location URI and the local Emergency Service Routing Proxy (ESRP) URI to the VSP.

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