interfacing etcs with gsm-r - uic - international union of ... · pdf filecommunication layer...

S. Reppert - UIC Conference Leipzig Copyright (C) Siemens AG 2003. All Rights Reserved. 1TS RA D PM, 11/11/2003

Interfacing ETCSwith GSM-R

UIC ERTMS Conference "On Track for Success"10 - 11 December 2003, Leipzig

Sabine ReppertSiemens Transportation SystemsRail Automation


System Overview of ETCS Level 2R

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ETCSEVC

Balise

Signal (optional)

Track vacancydetection systems

ETCSRBC Interlocking

ISDNISDN

Adjacent RBCAdjacent RBC

GSM-RGSM-R

RBC: Radio Block CenterEVC: European Vital Computer


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ion System Overview of ETCS Level 2

ETCSEVC

Balise

Signal (optional)

Track vacancydetection systems

ETCSRBC Interlocking

ISDNISDN

Adjacent RBCAdjacent RBC

GSM-RGSM-R

RBC: Radio Block CenterEVC: European Vital Computer


Interfacing EVC with GSM-R (Functional Architecture)R

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ETCS

EVC

Euroradiosafety layer

EVC application

Euroradiocommunication layer

GSM-R Mobile

GSM-R antenna

Non-vital functions

Air gap

Standardinterface (MT2)

Vital functions


Interfacing RBC with GSM-R (Functional Architecture)R

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ETCS

RBC

Euroradiosafety layer

RBC application

Euroradiocommunication layer

ISDN-S2m card

MSC

BTS

BSC

Air gap

Non-vital functions

Vital functions

Standardinterface (S2m)

BTS: Base Transceiver StationBSC: Base Station ControllerMSC: Mobile Switching Center

ISDN


Challenges of Interfacing ETCS with GSM-R (1/3)R

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Availability of the overall system

To operate ETCS Level 2 successfully,you have to make sure that ...

the GSM-R infrastructure has a very high availability or

the ETCS system has a well-designed fall-back mode(e.g. Level 1) in case of losing the connection betweentrain and RBC.



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nGSM-R network architecture

To operate ETCS Level 2 successfully,you have to make sure that the network coverageis designed in such a way that ...

even at the highest speed (up to 500 km/h) the connectionbetween RBC and train does not get lost during the cellhandover.

the overlapping into the adjacent non-ETCS Level 2area is large enough so that the train is able to enterthe ETCS Level 2 area without braking.



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nQoS parameters

To operate ETCS Level 2 successfully,you have to make sure that...

the system parameters are configured in such a way that the following quality-of-service (QoS) requirements are met

¨ Transmission interference rate

¨ Connection establishment failure probability

¨ Connection loss rate


Motivation for ETCS Level 2R

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nThe benefits to the railway operators include

üHigh speeds of up to 500 km/h

üShorter headways

üMinimum or no lineside signals

üHighest level of safety

üInteroperability

The ETCS Level 2 technology is ready for deployment!

The benefits to the railway operators include


RBC (J-H/L)

RBCEuroradio

module

EVCEuroradiomodule

Solutions for Interfacing ETCS with GSM-RR

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EVC (Desiro, JH/L)


ConclusionR

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nEven though there are standards defined, interfacing ETCSwith GSM-R is a complex task. Do not expect it to be like"plug&play".

If you do not have the necessary experience, it is like"plug&pray"!

Siemens Transportation Systems has the necessary expertiseto operate ETCS with GSM-R.

Siemens ETCS Level 2 reference projectsGermany: Berlin-Halle-Leipzig pilot lineSpain: AVE trains for the Madrid-Lérida high-speed lineNetherlands: HSL Zuid high-speed line

Siemens is a full-scope supplier for both coretechnologies: ETCS and GSM-R

ü

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TRAINGUARD®

it’s ETCS / it’s Siemens / it’s innovation

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