1.2 Ed Parsons, Google

Ed Parsonseparsons@google.com@edparsons

112,999,911 + Lat,Lon ?Adding Handset location to Emergency calls in Android

2/3 of the UK Population

90% Millennials

Primary internet gateway

The Smartphone Society

Source : OFCOM 2015

Location makes smartphones smart

71%Of 911 calls in the United States are made by mobile users

December, 29 2014, 4amShanell Latrice Anderson, 31

Calls 911 from her car..

“But my phone knows where I am ?”

A solution...

Users reporting an incident are often unable to provide emergency services with accurate information about their location

The goal: Reduce response times and save lives

Motivation

Cell Position 164 Meters

AGPS Position106 Meters

Google FLP 16.8 Meters

Emergency Location Service

Overview

ELS sends emergency location directly from the handset to operators

Computed using Fused Location ProviderFuses GPS, Wi-Fi, and cell

Faster and more accurate than traditional aGPS or cell-tower solutions

Low energy use

How it works

1. User places emergency call.2. Location is computed on-device using Fused

Location Provider3. Location sent directly from device to operator,

using MCC/MNC to look up the appropriate endpoint (either HTTPs or Data SMS AML Message ).

Fundamental Principles

1. Device-Initiated: Location can only be initiated by a user explicitly dialing 112/999. Location is relayed directly from handset to specified endpoint (not visible to Google).

2. Backwards-Compatible: Live on > 99% of existing Android devices (2.3+) via Play Services. No OS or hardware upgrades required.

Test Results (US Carrier)

Independently tested by Tier 1 US Carrier(One Test Location) Indoor Survey Point:● Building, 6th Floor SW

Stairwell (Deep Indoors)

Over 100 Sessions Yield 1-Sigma (67%) Accuracy

2-Sigma (90%) Accuracy

2-Sigma (90%) Latency

AGPS 63.11% 42.83m 106.67m 25.66s

Cell Tower RTT 36.89% 153.69m 164.95m 25.04s

Google FLP Location 90.2% 16.84m 17.62m 15.00s

Met

ers

< 17 meters

AGPS Cell RTT Google FLP

How can you use it?

1. Create an HTTPs and/or Data SMS endpoint for receiving emergency location

2. Specify to us the endpoints for integration with Android

Already live !

Early results from the UK..

10,000 Locations per day !

Emergency Location Service Configuration

Configurations control:When Thunderbird is activated

How Thunderbird gathers emergency location

Where emergency locations are sent

When:Which emergency numbers, and for which MCC/MNC values?

How:How often is location reported, and is the first available fix reported?

Where:Which endpoint is location reported to (server address, SMS number).

Next steps..Contact me

eparsons@google.comOr visit

http://goo.gl/x3P1pV

Ed Parsonseparsons@google.com@edparsons

Thank you !