uic-ertms-wc-2-1-final1 (hsudr)

www.gsm-rail.com

Enhanced reliability

and stability

of the GSM-R system

Jean Michel Evanghelou Head of Railways Solution

Kapsch CarrierCom

Gottfried WINTER Head of GSM-R Sales Department

Funkwerk AG

2 www.gsm-rail.com 2

Agenda

1. Enhanced reliability and stability of the GSM-R

infrastructure considering interoperability

2. Enhanced reliability and stability of the GSM-R cab

radio/ EDOR considering interoperability

3 www.gsm-rail.com 3

Agenda





4 www.gsm-rail.com

The Departure Point : GSM-R’s ‘Pure-Play’ Telecom Heritage

A network architecture built on GSM standards

GSM-R seen as a pure telecom system

Safety requirements applied onto the ETCS 2 application layer only

Foundation for evolution set : R4, GPRS, IP

5 www.gsm-rail.com

GSM-R Lifecycle Adapted to Railway Requirements

Railway versus Telecom lifecycles

Long term technology support (beyond 2030)

Evolutionary products

Obsolescence management to address longevity requirements

6 www.gsm-rail.com

GSM-R : from ‘Telecom Service’ to a ‘Mission-Critical Element’

Railway operational rules mandate functionalities not included in legacy GSM standard

Features added to meet the specific requirements of Railways’ critical communications

GSM-R providers refine specific and complex algorithms for radio signal processing to

compensate the impact of high speed on voice calls (HSUDR)

Strong demand for improved Railway Emergency Call functionality and Location

Dependent Addressing feature : eREC & eLDA

ASCI Features

Shunting

FN, LDA, REC

ETCS, ER-Band

7 www.gsm-rail.com

GSM-R Capabilities to Deliver Highest Quality of Service

Rules have been set on GSM-R infrastructure to ensure the highest levels of reliability,

availability and security (Voice and ETCS L2) - Voice circuits & now packet mode

GSM-R specific architecture is designed to continuously improve network security

Definition of full GSM-R ecosystem including terminals, cab radios, GPRS, ...

Interoperability tests between vendors and End-to-End validation of ecosystem

products

Automated Disaster Recovery

Core Network Geo-Redundancy

Double Coverage for Radio Sites

Radio Cell Overlapping

8 www.gsm-rail.com

“Reliability” Radio Approach

BTS with internal redundancy to protect BCCH (Broadcast Control CHannel) bearer

Double coverage with co-located BTS in the same radio site

On a given radio layer, a cell can allow handover from neighboring cells N-2 and N+2

Layer 1

Layer 2

Cell NCell N-1Cell N-2 Cell N+1 Cell N+2

Cell N’Cell N’-1Cell N’-2 Cell N’+1 Cell N’+2

9 www.gsm-rail.com

“Flexibility” Core Approach : GSM-R R4 Deployments

Full GSM-R R4 networks, combined with ETCS L2 & High Speed

LIVE R4 ETCS L2

LIVE R4

LIVE R4 ETCS L2

R4 in validation

ETCS L2

LIVE R4

LIVE R4

ETCS L2

High Speed

R4 in validation

R4 in validation

R4 in deployment High Speed

ETCS L2

High Speed

ETCS L2

High Speed

ETCS L2

High Speed

ETCS L2

High Speed

ETCS L2

ETCS L2

ETCS L2

￭ Austria

￭ Bulgaria

￭ Czech Republic

￭ Lithuania

￭ United Kingdom

￭ Algeria

￭ Ireland

￭ Poland

￭ France

￭ Germany

￭ Hungary

￭ Saudi Arabia

￭ Slovenia

￭ Netherlands

￭ Norway

￭ Sweden

R4 in deployment

R4 in deployment

R4 in deployment

R4 in engineeering

R4 in engineering

R4 in engineering

R4 in deployment

ETCS L2 High Speed

10 www.gsm-rail.com

“Stability” Core Approach : Disaster Recovery Schemes

In case of loss of the complete active

switching center, a recovery will be set

from the failed switching center to the

backup one.

The backup switching center is ready to

perform the service as HLR, IN and

SGW nodes, working in mated-pair

have up-to-date data.

Backup MSC becomes active and can

handle the complete network traffic

management.

As one active BSC of one radio layer is

down, process to activate related

backup BSC for this radio layer has to

be done.

Switchover of the optical transmission

network has to be performed to ensure

the right paths for new configuration of

service management.

Media

Gateway 1

Media

Gateway 2

SCP1 SCP 2

MSCS 1 MSCS 2HLR 1 HLR 2

IP routersIP routers

SGW 1 SGW 2

Optical SDH

Transmission Network

BSC 1A/2B

SMS-C

VMS

VRS

SMS-C

VMS

VRS

GSM-R

Dispatcher

Switch

GSM-R

Dispatcher

Switch

TCU 1A/2B BTS network BSC 2A/1B TCU 2A/1B

Jeddah OCC KAEC BOCC

ADM SDHADM SDH

11 www.gsm-rail.com 11 www.gsm-rail.com 11

Agenda





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GSM-R Network

GSM-R

network

Dispatchersystem

Handhelds (GPH, OPH, OPS)

Cab Radios

EDOR


How to verify Interoperability?

Cab Radios, EDOR and SIM cards are subject to Interoperability

￭ Terminals have to work seamless in each national network

Cab Radio and EDOR standard is based on actual EIRENE,

Baselines and National Add-on’s

To assure all these features -> Suppliers have to provide

certificates of the European Notified Body as well as of all

National Authorities

Tests, lab costs, preparation of documents and invoices of the

authorities are very cost driving


Six key questions regarding GSM-R terminals

How to meet the high demands on reliability?

How to warrant the Railway product lifecycles also with the cab radio?

How to ensure the sufficient availability of cab radio and EDOR equipment?

How to save life cycle costs?

How to open the cab radio for implementing of additional features?

How to handle the drastic explosion of homologation costs?


Reliability / Life cycle

How to meet the high demands on reliability?

How to warrant the Railway product lifecycles also with the cab radio and EDOR?

Development according to the requirements of security, reliability and stability

More than 10 years experience in the field – permanent feed-back for improvements

Long term technology support for cab radios beyond 2030

High level obsolescence management (long life electronic components, stock)


Availability / Life cycle costs

How to ensure the sufficient availability of cab radio and EDOR equipment?

How to save life cycle costs?

Improvement of MTBF figures

Implementation of the new GSM-R transceiver generation (blocking, GSM-ER band)

Remote diagnosis procedures for pre-corrective maintenance

Remote Software Upgrade system


Additional features / costs for Homologation

How to open the cab radio and EDOR for implementing of additional features?

How to handle the drastic explosion of homologation costs?

Faster time to market required

Reaction-less functional modules for EIRENE-independent feature implementation

Improvement of modular hard- and software design

Customized compilation


Conclusion

The industry is ready to meet

the special railway

requirements of enhanced

reliability

and stability by considering

the interoperability

www.gsm-rail.com

Thank you

uic-ertms-wc-2-1-final1 (hsudr)

Documents

gsm standards gsmr

gsmr infrastructure

gsmr ecosystem

gsmr r4 deployments

gsmr r4 networks

gsmr capabilities

gsmr lifecycle

gsmr cab radio edor