2. Continuing the Quest for Wireless Location Accuracy
Roger Marshall
Roger Hixson, ENP

3. Session Topics
Understanding today’s location landscape, and its evolution Problems that exist today, and how better location solves them Deeper look into how location advances impacts PSAP call taking and dispatch processes Considerations on displaying new caller location information

4. Session Topics
What type(s) of location is available, and why is it needed? Which location related technologies are undergoing change? What is the expectation for location in the future?

5. Location Landscape
Drivers: FCC 4th Report & Order: Heightened Location Measured Location: 50m uncertainty, 90% confidence – this is geo location, also called a position estimate Provisioned Location: NEAD Dispatchable Location – this is a civic location, or street address Overall, there is a need for better, faster, dispatchable location

6. NEAD ARCHITECTURE

7. Location Landscape Changing Scenery:
Moving from today’s Phase 1 & Phase 2 to add other location technologies
Geo Location changes:
Improved 2D location: AGNSS, O-TDOA, TBS, Crowd-Sourced Wi-Fi, Device based Hybrid, Small Cells
3D location including altitude
Civic Location changes:
Dispatchable location – From NEAD, civic address, includes:
sub-address information: building, floor, room, zone, placetype, etc.
Uncompensated Barometic Pressure

8. Location Landscape On Ramps: Access Technology Changes
VoLTE becoming ubiquitous – offering more options for calling and data – therefore more options for location
VoWiFi now being deployed – location systems based on Wi-Fi are less mature, diverse, and are changing
RTT replacement of TTY – tied into a mobile location, whereas TTY for wireline relied on static location
IoT sensors and alerts – no standards yet on location 5G

9. Location Landscape
Off Ramps: Changes for location displayed at the PSAP Assumption: both geo and civic (e.g., dispatchable) location forms New Class of Service label definitions WDL2 = ? WDL1 = ? WCVC = ? Repurposing of Customer Name field for wireless calls

10. Location Landscape
DISCUSSION

11. National Emergency Address Database (Discussion Proposal)
WDL2 indicates a wireless call that provides:
civic oriented data (address and sub-address location [where appropriate]) in addition to
traditional WPH2 geodetic X, Y and Uncertainty data associated with the caller’s location (where available). 
When this CoS is used, it indicates the civic oriented data is expected to meet the highest quality level criteria to be “dispatchable”, and indicates that the sub-address location within the building address is very close to the caller’s location.

12. National Emergency Address Database (Discussion Proposal)
WDL1 indicates a wireless call that provides:
civic oriented data (address and building zone [where appropriate]) in addition to
traditional WPH2 geodetic X, Y and Uncertainty data associated with the caller’s location (where available). 
When this CoS is used, it indicates the civic oriented data is expected to meet the medium-quality level criteria to be “dispatchable” by building zone but also indicates a less detailed location than WDL2. 

13. National Emergency Address Database (Discussion Proposal)
WCVC indicates a wireless call that provides:
civic oriented data (address) in addition to
traditional WPH2 geodetic X, Y and Uncertainty data associated with the caller’s location (where available). 
When this CoS is used, it indicates the civic oriented data is not expected to meet the criteria to be “dispatchable” by either building zone (WDL1) or sub- address location (WDL2).

14. National Emergency Address Database (Discussion Proposal)
Location Field
Limitation of approximately 20 bytes on average (range may be 12 bytes to 60 bytes)?
For NEAD uses, unique location items may be:
Flr, Rm, Suite, Zone (floor quadrant)
Mezz, Lobby, Bsmt?

15. WIRELESS PHONE PHASE I ANI/ALI
S ESN=
(210) :21 08/18/2014
1101
TMOBILE-SE SECTOR-QF 616C5
(830) WRLS
WIRELESS-SAN ANTONIO TX
TMOBILE WIRELESS
ALT#= TELCO=TMOB
X= CNF=000
Y= UNC=0
WIRELESS CALLER
VERIFY CALLERS NUMBER
VERIFY CALLERS LOCATION

16. WIRELESS ANI/ALI for Dispatchable Location
S ESN=
(210) :21 08/18/2014
1234
Address
Austin St
(830) WDL2
CoS
WIRELESS-SAN ANTONIO TX
City, State
Rm 541 BT=MTM
Location
TMOBILE WIRELESS w Civic Location
Name
ALT#= TELCO=TMOB
X= CNF=090
Y= UNC=98
WIRELESS CALLER
VERIFY CALLERS NUMBER
VERIFY CALLERS LOCATION

17. WIRELESS ANI/ALI for Dispatchable Location WDL2 case
S ESN=
(210) :21 08/18/2014
1234
Address
Austin St
(830) WDL2
CoS
WIRELESS-SAN ANTONIO TX
City, State
Rm 541 BT=MTM
Location
TMOBILE WIRELESS w Civic Location
Name
ALT#= TELCO=TMOB
X= CNF=090
Includes geodetic est location as well, with UNC
Y= UNC=98
WIRELESS CALLER
VERIFY CALLERS NUMBER
VERIFY CALLERS LOCATION

18. WIRELESS ANI/ALI for Dispatchable Location WDL1 case
S ESN=
(210) :21 08/18/2014
1234
Address
Austin St
(830) WDL1
CoS
WIRELESS-SAN ANTONIO TX
City, State
Fl 5 NW Zone BT=MTM
Location (plus/minus one floor and floor quadrant)
TMOBILE WIRELESS w Civic Location
Name
ALT#= TELCO=TMOB
X= CNF=090
Includes geodetic est location as well, with UNC
Y= UNC=98
WIRELESS CALLER
VERIFY CALLERS NUMBER
VERIFY CALLERS LOCATION

19. WIRELESS ANI/ALI for WCVC case (estimated address but no detailed location)
S ESN=
(210) :21 08/18/2014
1234
Address
Austin St (est)
(830) WCVC
CoS
WIRELESS-SAN ANTONIO TX
City, State
BT=MTM
Location field including Building Type
TMOBILE WIRELESS w Civic Location
Name
ALT#= TELCO=TMOB
X= CNF=090
Includes geodetic est location as well, with UNC
Y= UNC=98
WIRELESS CALLER
VERIFY CALLERS NUMBER
VERIFY CALLERS LOCATION

20. Location Landscape
Buckle Up: What needs to be done Updated Procedures Updated Training materials Evolve CPE to display both location forms Migrate to NG9-1-1 to take advantage of richer information