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Internet / Next Generation Emergency Calls

Internet / Next Generation Emergency Calls

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Internet / Next Generation Emergency Calls

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  1. Internet / Next Generation Emergency Calls Ernst Langmantel Technical Director, Austrian Regulatory Authority for Broadcasting and Telecommunication (RTR GmbH) The opinions expressed in this presentation are the personal views of the author and do not prejudge decisions of the Austrian regulatory authority

  2. Contents • Basic Service Architecture Elements • Legacy networks (PSTN/ISDN, GSM/UMTS) • Architecture – Outgoing Calls – Emergency Calls • Internet • Architecture – Outgoing Calls – Emergency Calls • NGN (ITU/ETSI) • Architecture – Outgoing Calls – Emergency Calls • IETF/Internet and ITU/ETSI NGN – Synergies ? ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  3. Basic Service Architecture Elements ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  4. Network Edge [Terminals, Application servers] Network of Networks Service Connectivity,Signalling Transport Networks and Terminals Terminal Terminal ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  5. Network Edge [Terminals, Application servers] Network of Networks Service Connectivity,Signalling Transport Media Streams / User Data Path Terminal Terminal ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  6. Network Edge [Terminals, Application servers] Network of Networks Service Connectivity,Signalling Transport Signalling Terminal Terminal ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  7. Legacy networks (PSTN/ISDN, GSM/UMTS)Architecture – Outgoing Calls – Emergency Calls ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  8. Without service interconnection (service interoperability)between networks the service area is restricted to area of individual networks PSTN /ISDN, GSM/UMTS – Architecture [simplified] Service Connectivity,Signalling Service control andphysical routing pointscombined in “Telephone Exchanges” Transport ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  9. PSTN /ISDN, GSM/UMTS – Outgoing/ Emergency Call [simplified] In case of emergency calls national emergency routing information is retrieved locally in the telephone exchange or from a national data base Caller / Called in Home Network g H H Service Connectivity,Signalling Transport ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  10. PSAP GSM/UMTS – Roaming Outgoing /Emergency Calls [simplified] Caller in Visited Network In case of emergency calls national emergency routing information is retrieved locally in the telephone exchange or from a national data base Call control in visited network H V Service Connectivity H Transport ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  11. Internet Architecture – Outgoing Calls – Emergency Calls ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  12. Internet Services - Architecture [simplified] Service control (call control) at the network edge. NO CONTROL of network transport by service control Service Connectivity,Signalling Transport(IP-Packets) ONLY IP-Interoperability necessary for GLOBAL service area ! ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  13. Internet VoIP - Outgoing Call [simplified] Global service area without service interoperability between providers “Home Position” Service Connectivity,Signalling Transport(IP-Packets) IP-interoperability between networks ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  14. Interoperability between services/ applications of network edge, not relevant for networks Internet VoIP – Outgoing Call [simplified] Different Service/Application Providers Service Connectivity,Signalling Transport(IP-Packets) IP-Interoperability between networks ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  15. H H PSAP Internet VoIP - Emergency Call Solution (ECRIT) [simplified] Where do I get PSAP Url in visited country? Location & type of emergency LoST PSAP UrI fully distributed international emergency routing data base Type of emergency & location Service Connectivity,Signalling Transport(IP-Packets) ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  16. LoST Functionality (Location-to-Service Translation Protocol) • Satisfies the requirements (draft-ietf-ecrit-requirements) for mapping protocols • Civic as well as geospatial queries • civic address validation • Recursive and iterative resolution • Fully distributed and hierarchical deployment • can be split by any geographic or civic boundary • same civic region can span multiple LoST servers • Indicates errors in civic location data  debugging • but provides best-effort resolution • Supports overlapping service regions Source: SDO Emergency Services Coordination Workshop (5./6.10.2006, Columbia University, New York), A Location-to-Service Translation Protocol (LoST)- Mapping Protocol Architecture, Ted Hardie, Andrew Newton, Henning Schulzrinne, Hannes Tschofenig ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  17. LoST Conclusions • Mapping is core component of emergency calling problem • LoST fully international and distributed • tries to avoid “who runs the root” problem • optimized for efficient use in mobile end systems Source: SDO Emergency Services Coordination Workshop (5./6.10.2006, Columbia University, New York), A Location-to-Service Translation Protocol (LoST)- Mapping Protocol Architecture, Ted Hardie, Andrew Newton, Henning Schulzrinne, Hannes Tschofenig ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  18. NGN (ITU/ETSI)Architecture – Outgoing Calls – Emergency Calls ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  19. Service control and physical routing in DIFFERENT network elements but fierce control of transport resources by service control within individual networks. Without service interconnection (service interoperability) the service area is restricted to area of individual networks (same as in legacy circuit switched networks) NGN – Architecture [simplified] Service Connectivity,Signalling Physical Transport (IP Packets) ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  20. H H V Service Connectivity Physical Transport(IP-Packets) NGN (IMS) - Outgoing Call [simplified] Roaming User (Exception for Emergency Calls!) Caller in visited network Call control for roaming user from “Home Position” (Internet-like) BUT via visited network ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  21. PSAP NGN (IMS) - Emergency Call NGN [simplified] Roaming User Caller in visited network Home Position lacks knowledge of caller location and national emergency routing in visited country H V Service Connectivity Physical Transport(IP-Packets) ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  22. PSAP NGN (IMS) - Emergency Call NGN [simplified] Roaming User Caller in visited network In case of emergency calls also in NGN (like in GSM/UMTS) invocation of call control in visted network including access to national emergency routing information to PSAP. H V H Service Connectivity Physical Transport(IP-Packets) ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  23. IETF/Internet and ITU/ETSI NGN – Synergies ? ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  24. One “Emergency (IP-)World” ? • A lot of synergies regarding ITU/ETSI NGN and IETF Internet standards are already in place because 3GPP standardisation is done in collaboration with IETF and NGN built on 3GPP specs. • Global routing database (LoST) is key element in IETF ECRIT concept. • Global IETF emergency call routing database should also be able to serve 3GPP and NGN needs. • No basic change to current basic NGN architecture necessary if NGN reuses IETF data base. NGN Location Retrieval Function (LRF) could access LoST. The goal: Only one place for the emergency organisations to put their routing requirements data! “Single point of truth” Can the two worlds come together ? ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  25. Further Information • NGN • ETSI NGN, IMS emergency session standards • ETSI TS 102 424 (2005-09) – Requirements for the NGN network to support emergency communication from citizen to authority • Draft ETSI TS 182 009 (version 12.07.2006) – NGN Architecture to support emergency communication from citizen to authority • ETSI TS 102 164 (2006-09) – Emergency Location Protocols • G. Camarillo, M. A. Garcia-Martin, The 3G IP Multimedia Subssystem (IMS), Wiley 2006 • IETF / ECRIT– Emergency Context Resolution using Internet Technologies • http://www.ietf.org/html.charters/ecrit-charter.html • A Wiki page that points to the most important documents:http://www.tschofenig.com/twiki/bin/view/EmergencyServices/EcritReviews(including link to SDO Emergency Services Coordination Workshop (ESW06)) • IETF: http://edu.ietf.org/ ITU Workshop "Future of Voice", 15./16.01.2007, Geneva

  26. Thank you very much for your attention ! ITU Workshop "Future of Voice", 15./16.01.2007, Geneva