Next Generation eCall (NGeCall) is the successor system to the eCall emergency call system, which at the time operated according to the GSM standard for reasons of area coverage. Since LTE networks now have high coverage, Long Term Evolution (LTE) and 5G
form the communications technology basis for Next Generation eCall. In contrast to the classic emergency call system (eCall), the emergency call
theIP Multimedia Subsystem (IMS) of Long Term Evolution (LTE). Via this IP-based service access technology, telephone emergency calls can be transmitted via Voice over LTE (VoLTE). In the event of an accident, an emergency call with the European emergency number 112 is automatically placed via the activated airbag or manually via the emergency button and transmitted to the LTE radio base station, eNodeB, using the Session Initiation Protocol (SIP) and the Session Description Protocol (SDP). During the call setup, the NGeCall transmits the Minimum Set of Data (MSD) containing key time details, location details, vehicle details and accident details. This dataset could be extended with driver health data. The LTE base station forwards the emergency call and the MSD data set to the PSAP
and establishes a voice channel between the accident vehicle and the PSAP. The NGeCall standard consists of several emergency call specifications relating to the emergency call session, the session and descriptionprotocols
, pan-European emergency calls, the IMS switching system and the end-to-end compliance of the IMS system.