Bjorn Skoglund from SOS Alarm presented the results of testing Advanced Mobile Location (AML) technology in Sweden to provide emergency responders with callers' locations when contacting 112 from mobile phones. Over a series of tests from January to March 2016 involving 85 calls in various environments: - 57 calls provided very accurate locations within 65 meters, with AML text messages arriving within seconds. - Outdoor calls achieved the highest accuracy, with 42 of 43 calls located within 65 meters. Indoor calls had varying accuracy depending on building materials. - Underground and shopping mall calls often did not provide a location, but when they did the accuracy was useful, within 1164 meters on average for underground calls and

1. BJÖRN SKOGLUND, SOS ALARM
AML – testing and implementation
in Sweden
78,5% OF ALL 112 CALLS IN SWEDEN
ARE MADE FROM MOBILE PHONES

2. TESTING
 Tests done with Sony and the MNO Telia Sonera
 85 test calls to the single emergency number 112, January – March 2016
 Test calls from outdoor – indoor, fixed location – moving in car, on ground –
underground, city – rural environment, shopping malls
 Overall a very positive result:
- 57 very accurate locations (within 65 meters)
- AML text message generally arrived within seconds
- Way better than cell-id location
 Tests with Google starting next week

3. TEST RESULTS
Number
calls Made from:
Accurate location
(within 65 metres)
OK location (within
1,5 kilometres) No location Other
43 Outdoor 42 1 (deviation ~150 m)
14 Indoor 9 5
13 Underground 1 4 (avg 1164 m) 8
14 Shopping mall 5 7 2 ("Case not closed")
1 Without SIM-card 1 (expected)
2 Emergency roaming 2 (expected)

4. RURAL ENVIRONMENT
Cell-id
location
AML location

5. IN THE MIDDLE OF STOCKHOLM
Exakt AML-
position!
RADIUS: 19 M
Cell-id
location
AML location

6. SHOPPING MALL IN THE MIDDLE OF STOCKHOLM
RADIE: 35 M
Cell-id
location
AML location

7. CONCLUSIONS
OUTDOOR
 Very good location accuracy, average radius 16,7 metres
 High share of calls giving (correct) location
= very useful
INDOOR
 Location or not depdending on type of building (concrete walls, thick roof),
 Good location accuracy, average radius 29,9 metres
= useful if/when location delivered

8. CONCLUSIONS
UNDERGROUND
 More often than not, no location delivered
 When delivered (in 38% of test calls), average radius 1164 metres
= still useful if/when delivered
SHOPPING MALLS
 Location delivered in 42% of test cases, surprisingly low figure(?)
 There should have been a higher degree of location deliverance with access of WiFi
than it really did(?)
 When delivered, average radius 33 metres
= useful if/when location delivered

9. TIME SCHEDULE
Test 1
Sony & Telia
Test 2
Sony & Telia
Test 3
Sony & Telia
Start of SOS Alarm
project: “Location
of Mobile Phones
Through GPS”
“Go” from 3
out of 4 MNOs
Test 4: Google
and all MNOs
AML
implemented in
Sweden
Decisions on
interface in
digital map
Final testing
Judicial aspects on
integrity matters
– report *
* including a
review by the
Swedish Post and
Telecom Agency
Mail to Apple
CEO in Sweden
JAN DECNOVOCTSEPAUGJULJUNMAYAPRMARFEB

10. THANKS!
bjorn.skoglund@sosalarm.se
+46 10 140 82 56