Study on feasibility of SATCOM for railway communication

Final Report
CRT-TECH-18 The proposed satcom system shall provide high level of safety in the
information exchanged.
RATIONALE
High levels of safety will be required in the Future Railway Communication System in terms of
integrity from protection against non-intentional (i.e. jamming) interferences point of view.
Safety is interpreted as the integrity level of the message reached by mean of countermeasures
implemented on the waveform (i.e. physical and link layer) to provide robustness in front of nonintentional
interferences and/or channel impairments.
CRITERION TRACEABILITY
EN 50126 RAMS – (S)afety
EN 50129 THR/SIL per application in terms of integrity
EN 50159
EEIG 96S126 / 02S126
UNISIG SUBSET-091
UNISIG SUBSET-037
UNISIG SUBSET-088
CRT-TECH-19 The proposed satcom system shall provide high level of security in the
information exchanged.
RATIONALE
High levels of security will be required in the Future Railway Communication System in terms of
integrity from protection against malicious users or intentional interferences point of view.
Security is interpreted as the integrity level of the message reached by mean of countermeasures
implemented on the waveform (i.e. physical and link layer) to provide robustness in front of
intentional interferences and/or jamming.
CRITERION TRACEABILITY
EN 50126 RAMS – (S)afety
EN 50129 THR/SIL per application in terms of integrity
EN 50159
EEIG 96S126 / 02S126
UNISIG SUBSET-091
UNISIG SUBSET-037
UNISIG SUBSET-088
A.2 TECHNICAL CRITERIA DEFINITION
This section defines criteria applicable for the complete communications architecture (including
terrestrial and satellite systems) for the FRMCS. Just like with the baseline satcom system section,
each criterion is complemented with a rationale or justification, and with a criterion traceability to the
reference documentation (if required).
Doc.Nº: SRAIL-FNR-010-IND
Edit./Rev.: 1/1
Date: 16/02/2017
Page 195 of 285