BTL completed E112 test capacity building

The Delegated Regulation (EU) 2019/320 activates Article 3(3)(g) of the Radio Equipment Directive (RED) 2014/53/EU. It requires smartphone vendors to demonstrate compliance with Galileo, Wi-Fi and AML (Advanced Mobile Location) in order to sell devices on the European market, from March 17, 2022 onwards.

The motivation for E112 is to provide the caller location information to emergency services, which will allow emergency responders to get to the scene of an accident faster.

   E112 test certification requirements, details are as follows:

A. GNSS：ETSI TS 103 246-5 V1.3.1 (2020-10)

1. NMEA (National Marine Electronics Association) OUTPUT TEST

The compatibility and interoperability of the smartphone with the Galileo system shall be demonstrated as follows:

− During the test, the smartphone shall expose and log the output the navigation solution in a NMEA-0183 protocol format. The log messages shall include the Coordinated Universal Time (UTC) time stamp and the latitude and longitude coordinates include NMEA sentences such as RMC, GGA or GNS.

− One or more Galileo satellites must be used in a valid position solution (i.e., it is present in the GSA message).

− The GNSS receiver being a part of the smartphone shall be capable of receiving and

processing individual GNSS signals in L1/E1 band from at least two global navigation

satellite systems, one of them being Galileo (GSA message shall include satellites from

at least two constellations one of them being Galileo)

2. TIME TO FIRST FIX TEST：

Test the capability to get a first position fix from any of the processed GNSS signals

selected by the DUT manufacturer. The first position fix appears in a maximum of 60 seconds for signal levels down to -130 dBm. The scenario is a static one.

The test starts with a dedicated reset of the GNSS memory stored on the DUT, i.e. a cold-start without assistance.

To record a good result, two criteria have to be passed:

● First, the position output data is generated within the max. TTFF response time.

● Second, the horizontal and vertical position errors, calculated from the difference between the measured and true position, are less than 100 m. In other cases, a bad result is reported.

3. HORIZONTAL ACCURACY TEST

The scenario is a static one. The duration of the simulated scenario is 20 minutes

(1200 seconds). A position fix is collected each second. Each position fix is compared

with the original position and the difference is stored.

Horizontal position errors < 5 meters for open sky and < 25 meters for urban canyon with a confidence level of 95 %.

4. GALILEO OPEN SERVICE NAVIGATION MESSAGE AUTHENTICATIONREADINESS

In order to demonstrate the readiness to use satellite navigation message authentication,

specifically Galileo OSNMA, the smartphone shall be able to expose and record the binary

stream of the Galileo I/NAV navigation message from at least one Galileo satellite for a

minimum period of 45 seconds, which shall contain an entire subframe of the I/NAV message.

5. EXPOSUREOF ADDITIONAL GALILEO OBSERVABLES

In this test case, the requirement on the exposure of additional Galileo observables is

assessed. An example of a set of additional GNSS observables are the GNSS raw

measurements. These measurements are defined as a set of baseline additional Galileo observables provided by the DUT to evaluate the quality of the navigation solution

in terms of satellites used and the signal strength.

The logs of the DUT are formatted in accordance with NMEA-0183 standard, in the

form of GSV sentences for the Galileo constellation.

B. AML：ETSI TS 103 625 V1.2.1 (2022-04)

AML TEST (advanced mobile positioning): Compatibility of the processing and transmission mechanisms of handset-derived caller location with the national Public Safety Answering Point (PSAP) systems via SMS or HTTP.

C. Wireless Local Area Positioning（ISO/IEC 18305:2016)

WLAN TTFF: capability to get a first position fix from signals from Wi-Fi Access Points in

maximum 20 seconds,for Entity to be Localised/Tracked (ELT) of type person carrying the smartphone and the building types defined in ISO/IEC 18305

WLAN position accuracy: capability to achieve a horizontal position error of maximum

30 metres from signals from Wi-Fi Access Points with a confidence level of 67 % (1σ

coverage factor)

The following test scenarios defined in ISO/IEC 18305 should be used for the compliance

assessment:

− The Test Scenarios 1 and 2 should be repeated four times by the ELT with the

smartphone in the right hand stood facing north, west, south, and east when

prompting the emergency communications to generate the location estimate during

the test scenario

During the test, the customer must provide the following support

1. Grant ADB root permission

2. Update Google Play Services to the latest version

3. Provide the method of capturing THE GNSS NMEA log by the mobile phone default positioning software, and the path of storing or exporting the NMEA log

4. Open AT COM port on mobile phone (if not, manual test is required)

The Device (UE) under test should allow Engineering debug mode operation, capable of capturing NMEA logs, allowing Keysight tools to retrieve the logs from device, able to install the CA certificates to the root directory of the phone's storage and not to enter into sleep mode for at least 30min or always stay awake option is enabled.

The Keysight S8706A test system and WiFi indoor positioning test scheme introduced by BTL have been verified at the same time, and BTL has the ability to test all items of E112 since then.

If you have any questions about the test project, please contact BTL Mobile Communication Department, we will provide you with professional technical answers.