1 / 21

Exploring Next Generation 9-1-1 Systems for Enhanced Emergency Response Solutions

Learn about NG9-1-1, its importance, goals, and technologies involved in improving emergency services and location tracking for efficient response.

marker
Download Presentation

Exploring Next Generation 9-1-1 Systems for Enhanced Emergency Response Solutions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Next Generation 9-1-1 (NG9-1-1) HELP!! Jong Yul Kim, Wonsang Song, and Henning Schulzrinne

  2. What is Next Generation 9-1-1? NG9-1-1 is*: • An interoperable networks and systems for voice, data, and radio among emergency response agencies • A set of coordinated applications on an IP internetwork that serves multiple governmental functions and seamlessly interfaces voice and electronic data. (NENA/IETF model) • A system of systems. *9-1-1 Magazine, Jan/Feb 2007 issue

  3. Why Next Generation 9-1-1? Because current 9-1-1 system cannot deal with:* • New devices and data sources • Internet phones, instant messengers, sensors • Multimedia-capable (voice, text, images, video) • Mobility • VoIP calls can be made from anywhere on earth • Nomadic vs. Mobile *9-1-1 Magazine, Jan/Feb 2007 issue

  4. What is our goal? • Develop a prototype that enables: • End-to-end IP calls • Multimedia • Caller location determination • Correct routing • Develop Proof-of-Concept • Deploy system across different PSAPs • Test what makes sense, what doesn’t • Come up with transition scenarios

  5. Who is involved? (POC)

  6. Location Routing PSTN Prototype looks like this.

  7. That’s all. Thank you for listening.

  8. Locating Caller using LLDP-MED LLDP-MED stands for: * Link Layer Discovery Protocol “a vendor-neutral Layer 2 protocol that allows a network device to advertise its identity and capabilities on the local network.” Media Endpoint Discovery “an enhancement to the LLDP that allows discovery of other things including location“ * From Wikipedia “I am LLDP-MED Capable. I can process location information.” “Your location is: 500 W 120TH st. New York NY 10027”

  9. DHCPINFORM [MAC=00:11:20:9d:a0:03] request or response DHCPACK [option=0:US:1:NY:2:NEW YORK: 3:NEW YORK:6:AMSTERDAM:19:1214] DHCP Server DHCP for Location • Mainly for stationary users • We modified ISC’s dhcpd to generate location information • Use MAC address to get location information

  10. CDP for Location • Mainly for stationary and nomadic users • Cisco Discovery Protocol (Layer2) • Cisco switches broadcast switch/port ID periodically. • A Switch covers a floor, a port leads to a jack in a room -> room-level accuracy

  11. SkyHook for Location • Mainly for nomadic, mobile users • Wireless device receives signals from Wi-Fi sites in range • Skyhook compares signals to its database of geographically known locations • Location data is used to direct safety services Taken from http://www.skyhookwireless.com

  12. Caller’s location Service provider (PSAP URL) + Service identifier (urn:service:sos) Routing Using LoST • LoST stands for Location-to-Service Translation • Work in progress at IETF ECRIT WG + Emergency Dial String

  13. SIPc, a multi-function SIP UA • Function (caller side) • Identifies and initiates emergency call • Determines location from various sources • Function (calltaker side) • Interfaces with location mapping software • Shows calltaker status, responder list, incident type • Implementation • Tcl/Tk based User Interface and SIP stack • External programs for audio, video, application sharing, stun, etc.

  14. Location Information Sources • Function • Provides location information to SIPc • Implementation • GPS : USB device and NMEA 0183 parser • Location Information Server built using Apache, MySQL, and PHP

  15. LoST Cluster • Function • Translates (Location, Service) to a PSAP URL and emergency dial string • Verifies civic address • Implementation • PostgreSQL with PostGIS extension as a Database • US county boundary polygons to simulate geo PSAP boundary • Sample MSAG data for civic PSAP boundary • Tomcat + Axis for Web Service

  16. sipd, a SIP proxy and registrar • Function • Routes call to destination • Resolves SIP URL to a reachable address • Invokes sip-cgi for in-network special services • Implementation • CINEMA (Columbia InterNet Extensible Multimedia Architecture) • sip-cgi is perl-based

  17. psapd, a back-to-back SIP UA • Function • Facilitates multi-party conference setup • Distributes incoming call to call takers • Logs call details • Implementation • CINEMA C++ library (libsipapi) • Call distribution logic is written in Tcl

  18. psapd handles an incoming call • All signals go through psapd • psapd controls conference instances through MSCML • Media is directed to conference server

  19. Conference Server • Function • Mixes and records audio • Distributes video • Call Queuing • Interactive Voice Response • Implementation • sipconf from CINEMA • Snowshore IP Media Server from Cantata Technology

  20. Location Mapping Software • Function • Plots caller’s location and other information on a local map • Shows nearby responders on map • Implementation • Geolynx Mapping System from GeoComm • Google Maps

  21. (2) Location + Service Identifier (3) PSAP URL + emergencydial-string (1) Location INVITE call taker From: caller <Location> (7) INVITE PSAP URL To: urn:service:sos <Location> (5) (4) INVITE PSAP URL To: urn:service:sos <Location> (6) dial emergency dial-string or push emergency button Media Stream Media Stream Emergency Call Flow LoSTCluster SOS caller SIP proxy call taker

More Related