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E911 PHASE 2 LOCATION SOLUTION LANDSCAPE

E911 PHASE 2 LOCATION SOLUTION LANDSCAPE. Mark Birchler, Manager Wireless Access Technology Research Motorola Labs birchler@rsch.comm.mot.com. ACRONYMS. A-GPS Assisted Global Positioning System AOA Angle of Arrival E-FLT Enhanced Forward Link Triangulation E-OTD

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E911 PHASE 2 LOCATION SOLUTION LANDSCAPE

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  1. E911 PHASE 2 LOCATION SOLUTION LANDSCAPE Mark Birchler, Manager Wireless Access Technology Research Motorola Labs birchler@rsch.comm.mot.com

  2. ACRONYMS • A-GPS • Assisted Global Positioning System • AOA • Angle of Arrival • E-FLT • Enhanced Forward Link Triangulation • E-OTD • Enhanced Observed Time Difference • RSS • Received Signal Strength • TDOA • Time Difference of Arrival • TOA • Time of Arrival

  3. AOA TDOA LOCATION SOLUTION “FAMILY TREE” “Where are you?” NETWORK HANDSET “Fingerprint” E-OTD (TDOA) A-GPS TOA GPS TDOA + RSS E-OTD + A-GPS TDOA + AOA E-FLT E-FLT + A-GPS

  4. NETWORK BASED: TDOA • Network impact • Location calculation and control • Network interconnection (digital systems) • Site impact • Location receivers • Handset impact • None • Systems addressed • Shipping product: AMPS • Announced product: [need data] • Under development: [need data] • Legacy handsets • Covered Location Calc & Control Serving Cell Neighbor Cell # 1 MS Location Receivers Neighbor Cell # 2 • TDOA: Time Difference of Arrival • Minimum of 3 sites measure arrival time of MS transmission • Location solution based on apparent arrival time differences between pairs of sites

  5. NETWORK BASED: AOA • Network impact • Network interconnection (digital systems) • Location calculation and control • Site impact • Location receivers • Additional antenna arrays plus cables • Handset impact • None • Systems addressed • Shipping product: [need data] • Announced product: [need data] • Under development: [need data] • Legacy handsets • Covered Location Calc & Control Antenna Array Neighbor Cell # 1 Serving Cell MS Location Receivers • AOA: Angle of Arrival • Minimum of 2 sites measure arrival angle of MS transmission • Location solution based on apparent signal arrival angle

  6. NETWORK BASED: MULTIPATH FINGERPRINT • Network impact • Network interconnection (digital systems) • Location calculation and control • Site impact • Location receivers • Handset impact • None • Systems addressed • Shipping product: [need data] • Announced product: [need data] • Under development: [need data] • Legacy handsets • Covered Location Calc & Control Serving Cell MS Location Receivers • Multipath Fingerprint • Minimum of 1 site measures attributes of received signal (i.e., “multipath fingerprint”) • Location solution based on matching of received signal fingerprint with predetermined location/fingerprint data base

  7. HANDSET/NETWORK BASED: E-FLT Location Calc & Control • Network impact • Location calculation and control • Site impact • Calibration of site sync • Handset impact • None • Systems addressed • Shipping product: • Announced product: • Under development: CDMA • Legacy handsets • Covered Serving Cell Neighbor Cell # 1 MS Synchronized Sites Neighbor Cell # 2 • E-FLT: Enhanced Forward Link Triangulation • TDOA solution based on MS measurements • TOA ranging & coarse AOA via existing site antennas • CDMA unique solution

  8. HANDSET BASED: A-GPS • Network impact • GPS assist and location calculation • Site impact • Potential enhancements for non-synchronized systems • Handset impact • Second GPS antenna • GPS RF front end & processing • Memory • Software • Systems addressed • Shipping product: [need data] • Announced product: [need data] • Under development: [need data] • Legacy handsets • Not covered GPS Assist & Location Calc GPS SV Serving Cell MS • A-GPS: Assisted Global Positioning System • Minimum of 1 site data link plus time of arrival (TOA) measurements to 3 GPS satellites (SV) • Location solution based on apparent TOA from GPS SVs

  9. HANDSET BASED: E-OTD Location Calc & Control • Network impact • Location calculation and/or control • Site impact • EITHER time synchronization enhancement • OR site time error measurement and calibration (LMU’s) • Handset impact • Memory • Software • Systems addressed • Shipping product: [need data] • Announced product: [need data] • Under development: GSM • Legacy handsets • Not covered Serving Cell Neighbor Cell # 1 MS Synchronized Sites or LMUs Neighbor Cell # 2 • E-OTD: Enhanced Observed Time Difference • TDOA solution in handset • Arrival time of transmissions from a minimum of 3 sites • Location solution based on apparent arrival time differences between pairs of sites

  10. COMPOSITE SYSTEMS • AOA + RSS (Received Signal Strength) • AOA + TDOA • E-OTD + A-GPS • A-GPS + E-FLT • Other?

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