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ERTMS Integration ExperiencesPeter Olasz

Customer Solution Management

ERTMS in Central and Eastern Europe27 May 2010, Warszawa

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

4 © Nokia Siemens Networks Public and Corporate Solutions / GSM-Railway / March 2009

Handheld, shunting terminals

Infrastructure GSM-R: Radio, Core, Data portfolio

Core

IN

BTS

BTS

BSC

bs240_241

bs240_241

End-to-end tested GSM-R Solution for Railways

Tested and proven Solutions in 25 Railway NetworksDispatcher Equipment CAB Radios

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GSM-R as bearer service for ETCS L2

GSM-R

• Ensure that EVC can reach RBC, i.e. compliance with FFFIS Euroradio

• Ensure the required GSM-R Quality of Service, i.e. compliance with Subset-093

• ... and build a network designed for this

MSCRBC

cab

EVC

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

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GSM-R HSL Radio design principles

BTS1 BTS2 BTS3

BTS1 BTS2 BTS3

BTS1ABTS1B

BTS2A BTS3ABTS2B BTS3B

Madrid-Sevilla• single radio layer

HSL ETCS L2 lines• double radio layer for highest

availability• -85 dBm/-70 dBm tunnels

Zaragoza-Huesca• overlapped radio layer• ETCS L1

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Overview (graphical)

HSL Madrid Lleida (450km)

RBC Ansaldo

HSL Lleida – Barcelona(150km)

RBC Thales

In both lines:EVC: Siemens

CabRadios: Siemens

Trains:Siemens S-103, 350 km/h

Lleida

Madrid

Barcelona

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Overview (textual), HSL Madrid-Barcelona• Some data about the GSM-R network:

– Double radio layer, double core

• Types of measurements performed– Optimization and Qos tests– Real ETCS-L2 tests

▪ Real Cab radios supplied by Siemens

Layer "A"

BTS 1A BTS .. BTS 4A

BSC ATRAU AMSC-AZaragoza

BSC B Layer "B"TRAU BMSC-BAtocha

BTS 1B BTS… BTS 4B

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

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Tools for the optimization and QoS phase

Test System with ComTalk application Abis, A, ISDN protocol analyzer (K1205)

Spectrum analyzer

Triorail TEMS

TSMU Scanner

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Optimization phase

What to measure• Coverage level• Quality of the signal• Interference• Handover Parameters, always checked in both directions

How to do it• Campaign of 2-3 weeks, different types of trains (160 km/h, 200 km/h, 300 km/h…)• Separated / joint / „degraded” measurement of layers• After each day, results are obtained & changes proposed in some parameters. Following day

effects of changes are checked• Parameters usually changed:

– Tilts– HO parameters– Power reduction– Frequencies– Priorities…

What to deliver• Graphical representation of the signal level and quality• Parameter - Tables with Nº of succesful HO’s, HO recreation time, HO break time…

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

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Quality of Service (QoS) for ETCS

ERTMS/GSM-R Quality of Service Requirements for ETCS are defined in Subset-093

• Connection Establishment Delay (CED)• Connection Establishment Error Ratio (CER)• Network Registration Delay (NRD)• Transfer Delay (TD)• Transmission Interference Rate (TIR)• Connection Loss Rate (CLR)

The corresponding tests are defined in ERTMS/GSM-R Quality of Service Test Specification (O-2475)

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

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Real ETCS-L2 tests

• CabRadio supplied by Siemens• Different GSM-R data modems used

• FWK (MT1, version 2.14)• Sagem (GPRM1)

• RBC from Ansaldo, EVC from Siemens (Madrid-Zaragoza)• Close cooperation between NSN, Ansaldo and Siemens

with the supervision of Adif• Problems fixed:

• Interworking between the RBC and the EVC• Data Losses• RBC Handovers

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

Public and Corporate Solutions / GSM-Railway / March 2009

European High Speed lines overview by 2025

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International experience

• Netherlands– ETCS L2 up and running on HSLs

• Belgium– Inter-PLMN HO with Netherlands

• Switzerland– Overall network redundancy design concept

• Italy– Running ETCS w/o backup system successfully

• Spain– High availability of the “Double” radio & core network

• China– Extreme fast network rollout

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Agenda

• Tasks for the GSM-R vendor• Spanish example

– Optimization phase– QoS phase– ETCS-L2 integration tests

• Outlook on other cases• Conclusions

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Setting up common „task force”

Setting up a small group of people participating on real ETCS-L2 measurements to share information: • Configuration of the network: HW, FW… NSN, signalling

vendors…• Problems / solutions found• Generating and maintaining a report describing the situation of each project

Not to re-invent the wheel in every project...

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