The setup consists of the R&S CMW500 wideband radio communication tester and the SMBV100A vector signal generator with integrated global navigation satellite system (GNSS) simulator. This setup allows manufacturers and suppliers of automatic in-vehicle system (IVS) to perform reliable and reproducible end-to-end conformance tests on their eCall modules.
When an accident occurs, the IVS connects with a public safety answering point (PSAP) via the local wireless communications network and transmits a minimum set of data (MSD) that includes the GPS coordinates of the vehicle involved. The Rohde & Schwarz test solution enables users to verify whether their IVS modem can successfully initiate an emergency call, transmit the correct MSD and establish a voice connection with a PSAP.
The software simulates a PSAP and controls the R&S CMW500 emulating a wireless communications network, in the lab. It also controls the GNSS simulator supplying the coordinates required for localisation. The test solution is fully automated thanks to the R&S CMWrun sequencer software and can be used right away. The user can test the RF interfaces and GNSS receiver and also check that the entire system is functioning properly.
With the advent of eCall, GSM and UMTS wireless communications technologies are now making their way into private vehicles. The R&S CMW500 is a future-ready multistandard platform capable of testing RF interfaces such as WLAN, 2G, 3G and LTE for traffic telematics modules. The R&S SMBV100A can also be used to test navigation systems and other applications that require position information. The GNSS simulator offers a range of flexible realtime scenarios with up to 24 dynamic satellites for GPS, Glonass, Galileo and BeiDou.
Rohde & Schwarz; www.rohde-schwarz.com