Study on feasibility of SATCOM for railway communication
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Study on feasibility of SATCOM for railway communication

SRAIL-FNR-010-IND%20-%20FinalReport_v1.1_20170216

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Final Report<br />

Data rate would be limited, thus making it possible to provide higher availability.<br />

Handhelds (<strong>on</strong>e <strong>of</strong> the main <strong>SATCOM</strong> limitati<strong>on</strong>s) would not be required anymore.<br />

Double-hop delays (not compliant with GEO <strong>SATCOM</strong> soluti<strong>on</strong>s) would not be c<strong>on</strong>sidered<br />

anymore, since communicati<strong>on</strong>s would take place between users (trains) and the <strong>SATCOM</strong><br />

HUB (i.e. ground stati<strong>on</strong>).<br />

- In (regi<strong>on</strong>al) lines with low traffic volumes and low-to-medium speed, it could be feasible to keep<br />

ETCS data and also voice services in exchange <strong>for</strong> relaxing some criteria (i.e. something similar<br />

to ERTMS regi<strong>on</strong>al). That would allow the use <strong>of</strong> ERTMS in those lines currently deprived <strong>of</strong> an<br />

automatic train protecti<strong>on</strong> and management system mainly due to ec<strong>on</strong>omic deployment reas<strong>on</strong>s.<br />

Finally, and with the aim <strong>of</strong> clarifying some <strong>of</strong> the points detected at this study that need more analysis<br />

in order to provide a more accurate <strong>SATCOM</strong> soluti<strong>on</strong> <strong>for</strong> <strong>railway</strong>s, or even developments or upgrades<br />

required <strong>for</strong> the <strong>SATCOM</strong> industry to provide products <strong>for</strong> <strong>railway</strong>s, several recommendati<strong>on</strong> <strong>for</strong> way<br />

<strong>for</strong>ward are presented:<br />

- To estimate accurately the <strong>railway</strong> data traffic demand by means <strong>of</strong> simulati<strong>on</strong>s c<strong>on</strong>sidering<br />

both number and distributi<strong>on</strong> <strong>of</strong> users, in order to be able to corroborate theoretical studies and<br />

<strong>feasibility</strong> <strong>of</strong> <strong>SATCOM</strong> soluti<strong>on</strong>s (mainly in terms <strong>of</strong> capacity).<br />

- The <strong>SATCOM</strong> industry to upgrade essential elements <strong>for</strong> <strong>SATCOM</strong> soluti<strong>on</strong> in trains, such as<br />

the antenna.<br />

- To advance in the smart routing element/functi<strong>on</strong>ality that will be able to per<strong>for</strong>m smooth<br />

transiti<strong>on</strong>s between the different bearers available (including <strong>SATCOM</strong>).<br />

- Finally, and due to the str<strong>on</strong>g potential synergies and compliances detected between the<br />

aer<strong>on</strong>autical and <strong>railway</strong> domains, to analyse how the IRIS FOC system, which is the future<br />

<strong>SATCOM</strong> soluti<strong>on</strong> to provide Air Traffic Management applicati<strong>on</strong>s, could be also used <strong>for</strong> the<br />

<strong>railway</strong> safety applicati<strong>on</strong>s, although some modificati<strong>on</strong>s could be required.<br />

Doc.Nº: SRAIL-FNR-010-IND<br />

Edit./Rev.: 1/1<br />

Date: 16/02/2017<br />

Page 34 <strong>of</strong> 285

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