Status go for mobility

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GSM-R Status in EuropeLille, 7th June 2007
DB Netz AG
Hans Bier
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1
Basics
European Status
2
Change Management
3
Harmonisation
4
Future Activities
5
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All pieces of the puzzle are needed for GSM-R
interoperability
GSM-R Implementation in Europe
Appli-cations
Subscriber Management
Certification
EIRENE
OperationalProcedures
Equipment
Inter-connection
NetworkServices
Migration
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GSM-R Project phases
Planning
Implementation
Measurement and Optimisation
Operation
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Planning for a railway mobile network
?
Network planning
Public network planning skills are not sufficient
Roll out priorities Coverage definition (ETCS,
speech only) Shunting
Mobile network planning
Cell requirements Cell type (umbrella/
micro) Repeater

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

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GSM-R Project phases
Planning
Implementation
Measurement and Optimisation
Operation
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Basic transmission structure of the GSM-R network
BTS 3.n
Interfaces to other systems
BTS ring of BSC 3
Interface to R-Switch(to controllers)
BSC 3
Main MSC
HSBYMSC
BTS 3.1
BSC 1
BSC 2
BTS ring of BSC 1
BTS ring of BSC 2
BTS 1.1
BTS 1.n
BTS 2.1
BTS 2.n
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Example of BTS connection between stations for
GSM-R
Alternatives to connect BTS to optical SDH node

• Via optical cable to next STM-1 node
• Via copper cable to next STM-1 node
• Via radio link connection to next STM-1 node

Radio link connection
Direct connectionto SDH system
Direct connectionto SDH system
Cooper cable connection
Optical cable
Railway track
Connection via optical cable with optical modems
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GSM-R Project phases
Planning
Implementation
Measurement and Optimisation
Operation
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Railways in cooperation with railway authorities
and notified bodies
?
GSM-R test and validation of system and
application

• Railway network operator have to ensure safe
  train traffic
• Therefore, railways verify functionality and
  quality of the GSM-R system and the application
  (such as train radio, shunting radio, maintenance
  radio, etc.)
• National railway authorities verifying
  functionality of selected systems and
  applications in railway operation (including
  telecommunication)
• National associations (notified bodies) have been
  assigned to certify conformance of
  telecommunication products to international
  standards (such as the interoperability rules of
  EIRENE)
• Test houses and engineering companies are
  qualified to measure and test products,
  procedures, and applications for homologation
• National procedures are still applicable in
  parallel to European standards and regulations

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The approach of testing- only a first step
Tests have to be set up in a way that conformance
criteria can be verified
Who Supplier What Technical test cases

• International
• Test Certificate
• Functionality
• Availability
• Reliability
• Maintainability
• Serviceability

Who Supplier railway company What Operational
test cases covering all spec of the
operational specification sheet
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Test philosophy / Measurements
Part 1
Part 2
Part 3
Functional tests
Repetition of measurements
System tests Acceptance
Operational tests
Interoperability tests
Quality of service
Configuration management, Cross acceptance
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GSM-R Project phases
Planning
Implementation
Measurement and Optimisation
Operation
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Tasks of network operation
Requirements
Railway Authority
Network operation management
Railway operation management
QoS

• User registration
• Profiles
• Track parameterization
• Change requests

Network management centre
Transfer of rail requirements
Network administration
Network planning optimization

• Configuration mgmt
• Network surveillance
• Fault management
• Status reporting (remote access)
• SLA level TAC 1 and 2
• Help desk

• Network configuration
• Extension planning
• New services
• Test bed/new projects
• Interconnection
• Roaming
• SW release mgmt

• Change management
• Network address profiles
• Management numbering scheme
• Network data fill
• SIM card management

• Accounting
• Controlling
• Performance reporting
• QoS monitoring
• Asset Management

Field service

• Maintenance level TAC 3 (field service)
• Fault correction repair national of central and
  track side systems
• Spare part management

SLA Service level agreement TAC Technical
assistance centre
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Actual interconnection status
GSM-R planning in progress
GSM-R switched on since 2005 (gt 50)
Roaming/intercon. DB AG In service Planned,
realisation Other connections Roaming/intercon. Pl
anned, realisation Transit lines
SBB
RENFE
2004 / 2005
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Future Railway Network (first analysis)
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2
4
Network with double functionality 1.
Interconnection of GSM-R networks 2.Building up a
new communication network
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3
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Network quality

• Network availability July 05- July 06
• Total cells 1561
• Quality figures
• 48.05 of these cells are without any outage
• 1.35 out of limit (21 cells)
• Drop rate TCH 0.42 (traffic)
• Drop rate SDCCH 1.06 (signalling)
• In average 3782 calls per cell

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1
Basics
European Status
2
Change Management
3
Harmonisation
4
Future Activities
5
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Overview
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Network figures European overview
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Example DB network
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1
Basics
European Status
2
Change Management
3
Harmonisation
4
Future Activities
5
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Change request activities in the GSM-R Project
The GSM-R Project together with the constituent
groups (FG, OG, IG )has a major activity which
is the maintenance of EIRENE Functional and
System Specifications.
The Change Request activity is well organised,
which aims to maintain the GSM-R specifications,
in the interest of interoperability, taking into
account the implementation progress and the
advance of the technologies.
Change requests are generated by
Implementation Reports

Change Information by industry or
created
by CER /EIM CR information
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Implementation Reports

• These reports cover issues from implementation of
  GSM-R
• and are requests for additional information or
  clarification Implementation Reports
• Can lead a Change Request to the FRS.
• Can be only a clarification
• Examples of Implementation reports discussed in
  the project
• Call arbitration table
• Increased number of drivers / members in shunting
  group calls
• Alerting Controller
• Direct Mode implementation
• Communication between the dispatcher and all Cab
  radios in
• the area
• Driver Safety Device Alarm Notification

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GSM-R Change request activities (flow chart)
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1
Basics
European Status
2
Change Management
3
Harmonisation
4
Future Activities
5
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GSM-R only an introduction of a new Communication
system?
Harmonisation of operational rules
Example
Emergency Call
No
harmonisation took place since many years. Due to
introduction of a new technology urgent
activities are needed Action by railways



Harmonisation of operational Railway processes
Example DSD
(driver supervision device) with retry mechanism.
If such a change request will be
accepted, it will influence the status of the
GSM-R status. Then we have to prove a
safety-case, the definition of the SIL level and
a lot of other circumstances. Action by ERA as
system-authority
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Other items to be discussed urgently

• ( some examples)
• Freezing the system specification
• To check more consequently the change request at
  the beginning
• Is ERTMS only a system for the big railways in
  Europe? There is a need of a cheaper system for
  the countries in eastern Europe.
• To push ERTMS regional
• Do we really need the high level coverage (there
  are no HSL)?

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1
Basics
European Status
2
Change Management
3
Harmonisation
4
Future Activities
5
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• Future activities
• Additional bandwidth for GSM-R
• Introduction of GPRS
• Stabilisation of shunting procedures
• Introduction of additional application
• Improvement of QoS figures
• Konfiguration management / Cross acceptance

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Hans Bier Director of International
Telecommunications/GSM-R Cooperations Deutsche
Bahn Hans.Bier_at_Bahn.de www.db.de/gsm-r-english