E6950A eCall/ERA-GLONASS Conformance Test Solution

E6950A eCall/ERA-GLONASS Conformance Test Solution

Brochures

Keysight Technologies

E6950A eCall/ERA-GLONASS

Conformance Test Solution 

Introduction

Emergency Call (eCall) is an in-vehicle road safety system developed to reduce fatalities, injuries and property loss in the event of a road accident by speeding up the emergency response times from the rescue team. An in-vehicle system (IVS) is installed in a vehicle and this IVS will trigger a 112 emergency call, either manually by passengers, or automatically in the event of a serious road accident. Once the IVS module is successfully connected to the most appropriate Public Safety Answering Point (PSAP), a Minimum Set of Data (MSD) is transmitted. This MSD contains the vehicle registration number, GPS location, a timestamp, direction of travel, the number of passengers and triggering mode (automatic or manual). This provides valuable information to enable the rescue team to reach the accident site as soon as possible. Once the MSD has been successfully received a confirmation is sent from the PSAP to the IVS module (ACK) and the connection to the PSAP transfers to a voice call allowing emergency services to speak to the car occupants. 

eCall/ERA-GLONASS Conformance Test Solution Challenge

eCall /ERA-GLONASS Conformance Test Solution is an European Union and Russian Federation initiative created to combine mobile communication and satellite positioning to provide rapid assistance to passengers in the event of a collision. Generally, an eCall module consists of an embedded computer that continuously monitors the crash sensors and vehicle position via satellite receivers. In the event a crash sensor is activated, the in-band modem will establish a connection to enable data transmission (MSD) to the most appropriate PSAP. A microphone and speaker system enables the driver or passenger to communicate with the PSAP operator. Each of these components plays an important role, hence they need to be tested for functionality in a real world environment to ensure overall system performance.

Testing of eCall/ERA-GLONASS modules brings many challenges; hence, the test solution should meet the following minimum viable functionalities:

  • IVS modules must comply with eCall/ERA-GLONASS standards
  • CEN/ETSI for eCall, GOST R 55530 for ERA-GLONASS
  • Verify that the IVS modem is able to trigger an emergency call
  • both automatically and manually, and sets the eCall/ERA-GLONASS Flag appropriately
  • Send the correct raw MSD data
  • Establish a voice connection with the PSAP
  • Produce logs of results/ACK/NACKS/timers for troubleshooting
  • Optionally test audio quality
  • MSD transfer using SMS
  • MSD content extensions for additional detail on crash information and vehicle diagnostics

eCall/ERA-GLONASS Conformance Test Solution

The Keysight E6950A eCall/ERA-GLONASS Conformance Test Solution performs end-to-end functional and standard-compliance conformance testing of eCall/ERA-GLON-ASS modules, with optional audio performance analysis. The E6951A PSAP Emulator Software simulates a Public Safety Answering Point (PSAP) and controls a UXM or E5515C to emulate a cellular network and EXG to provide GNSS coordinates required by the IVS to compile the MSD. This setup makes it possible to verify if the IVS modem is able to trigger an emergency call, send the correct raw MSD data and establish a voice connection with the PSAP – fully independently of any real-world mobile network.  

Solution Architecture 

The Keysight eCall/ERA-GLONASS conformance test solution is based on the following architecture: In the test environment, a signal generator provides GNSS coordinates, simulating what the satellite system does in the real environment. The IVS represents the automotive vehicle, while the UXM (or E5515C) is used to emulate a cellular network in the real world mobile network. The PSAP software can run inside the UXM, or on a separate PC when using with E5515C.

Hardware Elements

With the eCall/ERA-GLONASS conformance test solution, you can leverage your existing/standard lab equipment, with the reassurance that the hardware acquired can be reused for many other tests and applications. 

N5172B EXG

To help you quickly create signals that meet the needs of specific standards and measurements, the EXG is compatible with Keysight Signal Studio software. Its suite of signal-creation tools addresses cellular communications, wireless connectivity, audio, video, positioning, tracking and general-purpose applications.

E7515A UXM 

The UXM is a highly-integrated signaling test set created for functional and RF design validation in the 4G era and beyond. It provides the integrated capabilities you need to test the newest designs, delivering LTE-Advanced Pro data rates up to 1 Gbps now and handling more complex requirements later. When the team counts on you to know when a new chipset or UE will pass, count on the UXM to help you make a clear call.

E5515C 8960 Series 10 Wireless Communications Test Set

The E5515C 8960 wireless communications test set is the world’s most trusted solution for 2G and 3G wireless device manufacturing and RF design and verification.