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Secure Tracking - GSM, GNSS and Beyond

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  • 1. Secure Tracking - GSM, GNSS and Beyond by Richard Carter CEO & Founder of CCww UKTI & ICT KTN IoT and M2M for open and secure new services and applications MWC2013, Barcelona, 25 February(C) 2013 CCww Slide: 1
  • 2. Introduction to CCww  Communications Consultants Worldwide Ltd.  Bournemouth, UK  Long history in cellular systems design  Developers of embedded protocol stack software  license stacks to integrators & manufacturers  (>1B devices)  use our stacks in our own product families  Custom Cellular Services  Feature phone, smart-phone and custom product design for customers world-wide  from spec to proof-of-concept to volume production  M2M solutions  STAR-Let 200 GSM/GPRS modem module  TracSure™ tracker product family(C) 2013 CCww Slide: 2
  • 3. Why Do We Track?  In order to  protect valuable assets  maintain knowledge of stock-list  off-set insurance costs  retrieve mislaid or stolen items  protect professionals engaged in high- risk activities  improve the quality of life for the vulnerable  secure the irreplaceable(C) 2013 CCww Slide: 3
  • 4. Introduction to Secure Tracking  What are the generic weaknesses in most tracking solutions?  How are these weaknesses overcome?(C) 2013 CCww Slide: 4
  • 5. Strategy-1: GNSS  Most tracking systems use GNSS systems  GPS is most common: free access, reasonably reliable, very accurate, fast TTFF with assistance (A-GPS)  but, like all GNSS, it has weaknesses J A A A X ✓ X(C) 2013 CCww Slide: 5
  • 6. Strategy-2: Cell-ID  Send base station information to server  Server uses database lookup and returns estimated location  More resilient than GNSS, but less accurate & more variable A A A ✓ ✓ ✓(C) 2013 CCww Slide: 6
  • 7. Strategy-3: Wireless Beacon  Tracker uses intermittent radio beacon: works in buildings and not subject to GPS-jamming E BRS  Signal information received by BRS; Ethernet back-haul  Server calculates position  Range 25m to 200m  Locates to within few metres A BRS E E X E BRS(C) 2013 CCww Slide: 7
  • 8. Strategy-4: Pin-Point Tracking  Uses continuous radio beacon  Signal picked up by Pin-Point Tracker  Guides operator towards asset  Ultimate pin-point to 100mm A PPT PPT PPT(C) 2013 CCww Slide: 8
  • 9. Strategy 5: Other Techniques  Wi-Fi  Tracker unit has Wi-Fi receiver  captures local AP SSIDs, MAC addresses  sends data to server  receives estimated position by analysis of AP locations  Network timing information  observed time difference, and timing advance  measured by UE and sent to server with cell-IDs  server uses timing information plus BS locations to calculate and return estimated position(C) 2013 CCww Slide: 9
  • 10. Demonstration By Use-Cases  Review 2 use-cases to highlight hybrid tracking in practice  Vulnerable person  Valuable asset retrieval(C) 2013 CCww Slide: 10
  • 11. Devices  TracSure™ 100  uses 433MHz proprietary radio beacon  stand-alone and option for other TracSure™ trackers  TracSure™ 200  GPRS/ A-GPS tracker watch (bracelet, fob)  option incorporates beacon: =‘on’  TracSure™ 400  GPRS/ A-GPS tracker unit with accelerometer  option incorporates beacon: =‘on’(C) 2013 CCww Slide: 11
  • 12. Vulnerable Person-1  Beacon Receiving Stations E BRS send data on beacons in range to server  Watch has beacon activated  Wearer in normal area BRS E  Server monitors habitual movement so can alert anomalies E X E BRS(C) 2013 CCww Slide: 12
  • 13. Vulnerable Person-2  Wearer now moved to E BRS corridor  For most vulnerable, this might trigger an amber alert BRS E E X E BRS(C) 2013 CCww Slide: 13
  • 14. Vulnerable Person-3  Wearer now outside  A-GPS switched on  Beacon in low-rep mode GPRS =>  This triggers red alert  If wearer returns indoors, GPS turned off; alert issued; revert to beacon E BRS tracker GPRS => X BRS E(C) 2013 CCww Slide: 14
  • 15. Next… Asset Tracking(C) 2013 CCww Slide: 15
  • 16. Asset Tracking-1  Assets stored in building Protected by TracSure™ 400 with optional beacon TracSure™ is in deep sleep to save battery A A A A A A ZZZ-ZZ-Z(C) 2013 CCww Slide: 16
  • 17. Asset Tracking-2  Accelerometer detects movement, and turns on modem + A-GPS unit  Alert message sent to server, with location/time information  Security guard follows by car/on-foot Crickey! GPRS => A A A X A A GPRS =>(C) 2013 CCww Slide: 17
  • 18. Asset Tracking-3  Asset last observed position close to building entrance  Operator guesses asset in building & turns on beacon  Security guard uses PPT PPT unit to home-in on and Phew! PPT recover asset X PPT PPT(C) 2013 CCww Slide: 18
  • 19. Conclusions  Tracking made more secure and resilient by using hybrid techniques  Not just GNSS, but  Cell-ID  observed time difference+ timing advance  radio beacon for macro positioning  radio beacon for pin-point location  Wi-Fi AP information  Intelligent switching between modes extends battery life  Appropriate use of Hybrid solutions  enhance tracking accuracy  enhance resilience  for environmental obstacles as well as intentional denial of service(C) 2013 CCww Slide: 19
  • 20. Thank you for your kind attention Join us for networking and refreshments after this session Visit our stand/ booth in Hall 7 7B90  For further information, contact:  Richard Carter: carter@ccww.co.uk  Anthony Cutler: cutler@ccww.co.uk  +44 1202 318161  www.ccww.co.uk(C) 2013 CCww Slide: 20