CEN/TS 17312:2019

SLOVENSKI STANDARD
01-junij-2019
Inteligentni transportni sistemi - e-Varnost - e-Klic prek satelita
Intelligent transport systems - eSafety - eCall via satellite
Intelligente Verkehrssysteme - eSicherheit - eCall über Satellit
Ta slovenski standard je istoveten z: CEN/TS 17312:2019
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 17312
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
April 2019
TECHNISCHE SPEZIFIKATION
ICS 35.240.60
English Version
Intelligent transport systems - eSafety - eCall via satellite
Systèmes de transport intelligents - E Sécurité - E Call Intelligente Verkehrssysteme - eSicherheit - eCall über
par satellite Satellit
This Technical Specification (CEN/TS) was approved by CEN on 6 January 2019 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 17312:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 10
5 Conformance . 10
6 General overview of 112-European eCall and satellite eCall . 11
6.1 Circuit switched 112-eCall . 11
6.2 Packet switched 112-eCall using IMS . 11
6.2.1 General . 11
6.2.2 Areas without cellular wireless telecommunication coverage . 11
6.2.3 Evolution of satellite telecommunication networks . 11
6.2.4 Most appropriate PSAP . 11
7 General Requirements for IMS-112-eCall via satellite telecommunications networks . 12
7.1 Automatic or manual . 12
7.2 Sat-com system location data requirements . 12
7.3 Satellite-IMS-112- eCall where Administration does not provide a central support
address . 13
7.4 Specification of the use case OAD . 14
7.4.1 General . 14
7.4.2 M1/N1 Category vehicles. 14
7.4.3 N/O Category vehicles – Commercial vehicles . 14
7.4.4 M2 and M3 Category vehicles – Coaches and busses . 14
7.4.5 T, R, S Category vehicles – agricultural/forestry vehicles . 14
7.4.6 L1 and L3 Category vehicles – Powered two wheel vehicles . 14
7.4.7 L2, L4, L5, L6 and L7 Category vehicles – Tricycles and quadricycles . 14
8 Specific session requirements for satellite-IMS-112-eCall . 14
8.1 Incident evaluation and eCall triggering considerations . 14
8.2 Requirements related to eCall triggering . 15
8.3 Sequence of events. 15
8.3.1 Privacy. 15
8.3.2 Triggering . 15
8.3.3 Call establishment. 16
8.3.4 Call forwarding . 16
8.3.5 Call termination . 16
8.3.6 Test Calls . 16
9 Satellite providers who support IP but do not support IMS . 16
10 TPS eCall via satellite communications (Satellite-TPS-eCall) . 18
Bibliography . 20

European foreword
This document (CEN/TS 17312:2019) has been prepared by Technical Committee CEN/TC 278
“Intelligent transport systems”, the secretariat of which is held by NEN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document was developed as part of the I_HeERO project and subsequently prepared by Technical
Committee CEN/TC 278.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Introduction
In accordance with a European Regulation, from March 2018, all new model Class M1/N1 vehicles will be
equipped with 112-eCall. Other model class M1/N1 vehicles may be voluntarily equipped with 112-eCall
and eCall support for other classes of vehicles will be enabled in the near future.
In its study CEN/TR 17249-1, the report observed that where a satellite telecommunications service
provider supports IMS, this means that 112-eCall over IMS can be supported, in accordance with
CEN/TS 17184, via the satellite telephone network, because IMS is an IP based service which is radio
agnostic. Generally, this means IMS eCall can be supported by any IP network and so will enable eCall via
satellite in IMS supporting satellite networks. (However, there is no fall-back to circuit switched eCall.)
Satellite communications that support internet protocol, but do not support IMS, may be able to provide
the service using an agreed CeIMS.
Satellite networks are geared for handling emergency calls – in terms of prioritization and handling. In
the maritime sector, the use of satellite networks is mandated and regulated for ships above a certain
size. Similar emergency call services have existed for decades on satellite networks for personal safety.
Most current satellite telephone systems support access to the internet through the use of IP protocol,
and therefore support IP-addressing. These systems are technically able to support IMS-112-eCall. This
of course requires a satellite communications transceiver in the vehicle, but modern satellite
communications systems can now usually be accessed by a standard-sized sharks-fin or flat panel
antenna.
As with other existing eCall provision, this specification is based on OEM fit equipment. The provision of
eCall for aftermarket vehicles will be the subject of other work.
It should also be noted that there will be no fall-back provision to circuit switched eCall in the event that
there is no local PSAP equipped to handle IMS (as provided for in 3GPP release 14), but this is not
required (see below).
As the ‘cell’ for a satellite system covers the entire continent, an eCall via satellite cannot identify the
“most appropriate” PSAP from the location of a cell tower, and so an alternative system is bound to be
specified.
Modern satellite telecommunications systems have the advantage that most (but not all) systems provide
the GNSS location of the source as part of the call establishment (in order to align signals between source
and satellite) and can therefore identify the location of the vehicle to a 1st level reception point PSAP. The
GNSS location information is not usually available outside of the network, except for certain types of
services, but can be made so for safety services.
This means that, in countries where the Administration is prepared to provide the satellite
telecommunications service provider with a single central level 1 PSAP IP address for satellite eCalls, eCalls
can be provided and supported in remote locations where there is limited or no 2G/3G/LTE/4G coverage
available. As, in this paradigm, the call is always made over IMS to an IMS capable level 1 PSAP address,
there is no requirement for fall-back to circuit switched eCall.
The central 1st level PSAP can then identify the GNSS location of the source of the eCall and redirect the
IMS VOIP call to the “most appropriate PSAP” on the basis of the GNSS location information provided in
the call establishment, or, where the GNSS location is not available in the call establishment, can read the
MSD to find the location of the vehicle and similarly redirect the IMS VOIP call to the “most appropriate
PSAP”. As the communication session is packet switched, call forwarding to the most appropriate PSAP
is a simple exercise and the MSD will be provided in the call setup (and therefore available in any call
forwarding).
Where the Administration is not prepared to offer a central 1st level PSAP address to the satellite
telecommunications service provider, satellite eCall can be provided via a TPSP.
Note, however, that eCalls over satellite (and certainly TPSP calls via satellite) are unlikely to be provided
free of carrier network charges and require satellite communication transceiver equipment in the vehicle.
Satellite-IMS-112-eCall is likely to be of particular interest to Administrations where there are users for
categories of vehicle that have to cross areas of intermittent cellular coverage and across multiple
countries and road networks. This may also be of interest for agricultural and forestry vehicles in
locations where low population density (such as rural areas, Northern Scandinavia and mountainous
regions) does not justify the provision of land based cellular telephone networks.
NOTE Support for Satellite-IMS-112-eCall is probably not needed in countries where there is good mobile
network coverage across the length and breadth of the land.
For vehicles known to spend signi
...