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1UIC ERTMS Conference Budapest DB Netz

Budapest, April , 2006

Experience with first interconnections of GSM-R Networks

“Connecting Networks”

DB Netz AGI.NVIZ


Content

ERTMS/GSM- R Solution

Connection Solution

Specific technical aspects

Cross border - Operation of a harmonized solution


Definition of the international GSM-R Solution depends on the specifications of geographic scope, time schedule, and functionality of deploym ent

• Economic objectives of introduction?

• Priorities of national and international lines?

• Required functionality and applications?

• Deployment schedule and migration concept?

• Responsibility of operation?

• Existing neighbour networks?

• Countries to be connected?

• How to operate all together?

? Answers required for national and international solution

“Even for a staged deployment of ERTMS/GSM-R the nationwide and international strategy with GSM-R is a prerequisite for an economic solution ”


• Per track• Per hub• Per station• Per network/MSC area

Traffic capacity

Planning for a railway mobile network exceeds planning for publi c networks as train control operations need to be matched

Network planning?

Mobile network planning

• Dispatcher• Disponent• Train controller• Traffic controller• Controller 1st (according EIRENE)• Controller 2nd (according EIRENE)• Service department• Emergency call

- train- police, fire brigade, red cross, …

Areas of rail responsibility

TracksRoll out prioritiesCoverage definition(ETCS, speech only)Shunting

FrequencyCell requirementsCell type (umbrella/ micro)Repeater

Public network

planning skills are not

sufficient

• Speed• Tunnels, bridges• Track coverage• Environmental

Technical rail requirements

Connecting networks•Type of network (supplier based)•Transit network


Content

ERTMS/GSM-R Solution

Connection Solution




Main MSC

BSC 1

HSBYMSC

BSC n

Interfaces to other Networks SMS-C

VMS-C

IN VRS

EIS

RSM

BTS

R-Switch

Controllers fixed

connections

Cab Radio

Mobile Subscriber

The network architecture looks like a common communication netwo rkbut becomes a GSM-R solution only by incorporation of rail processes


The network becomes a GSM-R solution only by incorporation of all international rail processes

A B

C

B

A National stand alone solution

B Connection to neighbour

C Transit connection


Border points between DB Netz and infrastructure operator neighbours

GSM-R migration and border crossing in Europe

Status Migration-planning

completed

Started / ongoing

First contacts made

Still to be started

57 Border points

85

8

12

10

3

57

1

7

2

1


Content


Connection Solution




Border crossings requires to deal with the existing or planned network solutions of the neighbours

…. without train radio

… with analogue train radio

… forseeing GSM-R train radio

Steps for the definition of the cross border solution

Border crossings with countries ….

1. Analysis of current technical and operational situation

2. Definition of the common operational communication matrix

3. Work out technical and rail operational solution options

4. Frequency agreement

Decision on the national GSM-R solution to be implemented


Several stages in migration to GSM-R might occur in border crossing between infrastructure operators A and B

REC

Line section A Line section B

Stage 0 / Phase 0 Analogue Radio(or even noradio at all)

Analogue Radio

Stage 1A(A is the earlierimplementer) or

GSM-R Analogue Radio

Stage 1B(B is the earlierimplementer)

Analogue Radio(or even noradio at all)

GSM-R

Stage 2 GSM-R(no cross border RECand GCA)

GSM-R(no cross border RECand GCA)

Stage 3 GSM-R(REC and GCA cross border

linked)


For each cross border site a bilateral agreement on operational suitable switching between the two networks has to be elaborated

Operational Border

Switching zone (ensuring min. 2 minutes stay)

Network coverage A

Traffic Controller

A

TrafficController

B

Network coverage B

Necessary length of overlapping depends from train speed:

V < 60 km/h: ca. 2 kmV < 120 km/h: ca. 4 kmV < 200 km/h: ca. 6 kmV < 250 km/h: ca. 8 kmV < 300 km/h: ca. 10 km

Emergency Group Call Area A

Emergency Group Call Area B


The emergency group call areas in each network have to be bilaterally arranged for in the overlapping border area

B1 B2 B3

A3 A2 A1

Network A

BorderNetwork B

Emergency group callPossible train communication

Switch over area

Dispatcher areas

Handling of Railway Emergency calls

• operation according national rules (temporary solution while harmonization of rules does not yet exist)

• modification of operational rules (harmonisation)


Status GSM-R in Europa - International Roaming

Status: March 2006

SBB

RENFE

2004 / 2005

GSM-R planning in progress

GSM-R implementation in progress

GSM-R switched on since 2005 (> 50%)

GSM-R switched on since 2005

Roaming/intercon. DB AG

in service

planned, realisation

other connections

Roaming/intercon.

planned, realisation

Partial interconnection for International Roaming will grow into one large network of GSM-R interconnection in Europa


Example - DB project plan for cross border agreements

Time schedule depends on DB migration planning and introduction in the neighbour countries

DB time line for GSM-R switch

Q1 Q2 Q3 Q42006

NL, CH, SRoaming

Interconnection F PL, L, SK

Subscribers from Neighbour Countries using DB SIM-cards

Border crossingGSM -R / GSM-R

(Phase 2)

B, F, CH, L

F, A, B, L, CZ, DK PL

NL CZ

B,CZ,


Typical project plan for border crossing arrangements

Requirements Solution Implementation Operation

Cross Border

Services

General conditions

• Roaming agreement• Interconnection with neighboring GSM-R platform

• Coordination with neighboring railways

• Kick off meeting with all parties involved at DB

• Analysis of current situation

• Information matrix• Summarize inputs of

all affected parties• Define requirements

& specs


• Workshop for solution approaches

• Integration of technical and operational solutions

• Development/ agreement on possible szenarios/ solutions


• Monitoring of implementation

• Coordination for international testing


• Monitor hand over to general organization

• Ensure that all bilateral contracts are defined

Per country

PerBorder crossing

Per border crossing a detailed questionnaire needs to be filled in as basis for the operational connection of both networks


Content


Connection Solution




Technical specifications for the connection solution - question to be answered

Common numbering plan available?

• Which kind of numbering plan used by UIC -networks for the different network types (mobile operation (GSM-R), fixed operational, fixed administrative)?

ØWhich country is using a harmonized/common „UIC“ subscriber numbering plan?

Required functionalities?

• Call types (PtP speech calls, PtP data calls, etc.)?

• Services (CCBS, Call back functionality by analysing the CLI, etc.)

• ……

Billing required?• Call data records based billing?

• Flat rate billing?

• ……


Overview of network interconnection- example of DB

258

* 8S

GSM-R DB

ARCOR

Controller ( new)7 x

BetriebsZentrale

+„ GeFos“

RBC

GSM-R BV

BASA(VPN)

DB

DPSTN/PLMN

PSTNSkanova

GSM-RDB MS

Publik PLMN‘sTelia Mobile

and Tele2

RBC

GSM-RDB

Cab Radio

712345 01

GSM-RBV

Cab Radio

712345 01

GSM -RBV MS

BFMADB

BFMADB

Controller (old)

Only for 112 used

1

1

PABX(Office network )

PABX(TC network )

258

* 8S

GSM-R DB

ARCOR

Controller ( new)7 x

BetriebsZentrale

+„ GeFos“

RBC

GSM- R B

BASA(VPN)

DB

BASA(VPN)

DB

DPSTN/PLMN

PSTN

GSM-RDB MS

Publik PLMN‘s

RBC?

GSM-RDB

Cab Radio

712345 01

Dispatcher network?

Int. E1

Line*


Communication requirements in general (example)

YesYesYes

Fixed administrative network (A)

YesYesYes

Fixed operational network (A)

YesYesYes

Mobile operational (GSMR) network (A)

Fixed administrative network (B)

Fixed operational network (B)

Mobile operational (GSMR) network (B)

For both cross border traffic partners the above communications relationship has to be elaborated


Content

Operation of connected ERTMS/GSM-R Solutions


Sustain

QoSrequirements

During lifecycle the ERTMS/GSM-R Solution requires both, Network Operation Management and Railway Operations Management

Network operation management

• Network configuration• Network system updates• Network operation surveillance• Fault management• Repair/service handling• Network extension &

optimization

Railway operation management

• Railway staff/user registration• Definition and administration of

user profiles• Track parameterization

(rail traffic control processes)• Request for new GSM-R

applications

Mobile network management Railway process managementpointView

International functionality control and supervision of QoS levels

necessary


Content

Summary and Recommendations


Summary and recommendations

1The design of the national GSM-R solution of an infrastructure operator has to foreseen all international cross border requirements from the be ginning

All aspects of functionality, rail operations, and frequency usage have to be considered in the network design

Besides country-wise solutions for network interconnection and international roaming in general, each single cross border traffic site requir es a bilateral arrangement to be implemented

Railways have to further develop and supervise international int erconnection on an ongoing basis

2

3

4

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