GSM-R
Technology and Product Evolution supporting highest Reliability and Safety
Requirements
• Manekshaw Centre, New Delhi 26 July 2014
• Ola Bergman
1
© Nokia Solutions and Networks 2014
GSM-R - Technology and Product Evolution supporting
highest Reliability and Safety Requirements
Agenda
Why GSM-R?
GSM-R Renewals and Improvements – core, radio, IP
ETCS over GPRS – packet switching and IP
GSM-R Interoperability/Compatibility Testing IOT
The path towards “Next Generation”
2
© Nokia Solutions and Networks 2014
2
GSM-R - Technology and Product Evolution supporting
highest Reliability and Safety Requirements
Agenda
Why GSM-R?
GSM-R Renewals and Improvements – core, radio, IP
ETCS over GPRS – packet switching and IP
GSM-R Interoperability/Compatibility Testing IOT
The path towards “Next Generation”
3
© Nokia Solutions and Networks 2014
3
Why GSM-R?
•
•
•
Radio communications for train operation since the 70´s – many well
functioning but incompatible and old fashioned systems
Under UIC leadership a modern and compatible system was specified during
the 90’s – GSM-R…
…and has been refined over the years since then
2011-2014
2014-…
4
© Nokia Solutions and Networks 2014
www.gsm-rail.com
4
Why GSM-R?
•
•
•
•
•
5
Radio communications for train operation since the 70´s – many well
functioning but incompatible and old fashioned systems
Under UIC leadership a modern and compatible system was specified during
the 90’s – GSM-R…
…and has been refined over the years since then
GSM-R has proven to be “almost” optimal and utmost reliable for both Voice
Communications and ETCS data transfer
GSM-R is Multivendor
© Nokia Solutions and Networks 2014
www.gsm-rail.com
5
Why GSM-R?
•
•
•
•
Radio communications for train operation since the 70´s – many well
functioning but incompatible and old fashioned systems
Under UIC leadership a modern and compatible system was specified during
the 90’s – GSM-R…
…and has been refined over the years since then
•
GSM-R has proven to be “almost” optimal and utmost reliable for both Voice
Communications and ETCS data transfer
GSM-R is Multivendor
•
GSM-R has a very large footprint – in Europe and internationally
• GSM-R is a true success story!
6
© Nokia Solutions and Networks 2014
www.gsm-rail.com
6
GSM-R is selected by more & more countries across the world
Sweden
Netherlands
Belgium
China
Algeria
Australia
Romania
Belarus
Argentina
Italy
Germany
Spain
Finland
India
Austria
Denmark
Ireland
Brazil
Azerbaijan
France
Saudi
Arabia
Bulgaria
Eurotunnel
Russia
Israel
Bosnia &
Herzegovina
Norway
Czech Rep.
Greece
UK
Poland
Iraq
Slovakia
Lithuania
Portugal
Slovenia
Latvia
Korea
Switzerland
Turkey
Tunisia
Hungary
UAE
Macedonia
South Africa
Serbia
Estonia
Croatia
Mozambique
Venezuela
Qatar
Ukraine
Morocco
Thailand
GSM-R established
GSM-R planned
1998
1999
7
For internal use
2000
2001
2002
2003
© Nokia Solutions and Networks 2014
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
Over 70,000 km track record in GSM-R projects is unrivalled
Australia, PTV
Victoria, 500 km
China, Ministry of
Railways, 9,000 km
Denmark, Banedanmark, 3,000 km
Finland, LiVi,
5,000 km
Germany, Deutsche
Bahn AG, 7,000 km
Greece, ERGOSE
SA, 1.000 km
Indian Railways and
Italy, Rete Ferroviaria
Kolkata Metro, 3,000 km Italiana, 10,000 km
Netherlands,
Pro Rail, 3,000 km
Norway, Jernbaneverket, 4,000 km
Poland, PKP,
1.000 km
Portugal,
REFER, 100 km
Romania,
CFR, 100 km
Saudi Arabia
Railways Org. + NS
mineral line, 4,000 km
Sweden, Trafikverket
10,000 km
Switzerland, SBB,
3,000 km
Tunisia, SNCFT,
300 km
Turkey, TCDD,
300 km
8
Belgium, Infrabel/
SNCB, 4,000 km
Spain, ADIF,
3,000 km
© Nokia Solutions and Networks 2014
GSM-R - Technology and Product Evolution supporting
highest Reliability and Safety Requirements
Agenda
Why GSM-R?
GSM-R Renewals and Improvements – core, radio, IP
ETCS over GPRS – packet switching and IP
GSM-R Interoperability/Compatibility Testing IOT
The path towards “Next Generation”
9
© Nokia Solutions and Networks 2014
9
GSM-R Renewals and Improvements
Ongoing in existing Networks/Systems
•
•
•
•
•
•
Shift to Internet Protocol IP
Introduction of Release 4 GSM-R Core, GPRS
Geographical Redundancy for Improved Core Availability
Renewal of RAN
Mitigation of Radio Interferences
Upgrades to ETCS L2/3 bearer capability
In Advanced Stage of Standardization
•
•
10
ER-GSM - Capacity Increase Option
ETCS over Packet Switching (GPRS/EDGE)
© Nokia Solutions and Networks 2014
10
Release 4 Core
 Upcoming GSM-R Core Network is the evolution of legacy TDM* based Core to
Packet Based Core – from Release 99 to Release 4
 The Bearer Independent Core Network architecture is defined by 3GPP* * in
Release 4 specifications and since years widely deployed in public mobile
networks around the world serving millions of subscribers
 Physical Separation of the control and signaling telecom layer - MSC Server from
the bearer plane - Media Gateway
 Release 4 is fully compliant with UIC EIRENE specifications and ERA GSM-R
baselines
 Release 4 is a major milestone towards Internet Protocol IP
TDM* - Time Division Multiplexing,
11
© Nokia Solutions and Networks 2014
3GPP** - 3rd Generation Partnership Project
Geographical Redundancy
Two geographically distant GSM-R Core Nodes to protect against Disasters
GSM-R Core on Location A
12
GSM-R Core on Location B
© Nokia Solutions and Networks 2014
www.gsm-rail.com
NOKIA’s unique Geo-Redundancy Solution
Meeting the highest Railway operational requirements
Site 1
Motivation
Site 2
Benefits
NetActTM
Modernization of
legacy
communication
systems
GSM-R has become a
mission critical
system
Higher requirements
due to ETCS level 2
13
For internal use
NetActTM
Fully redundant core
network
NT HLR
and IN
NT HLR
and IN
IP backbone
GPRS
GPRS
MSS &
MGW
MSS &
MGW
© Nokia Solutions and Networks 2014
Load sharing with
zero outage and
seamless switchover
Carrier-grade platforms
using proven state-ofthe-art technology
Incomparable end-to-end GSM-R portfolio
Fixed transmission
Intelligent Network (IN)
Radio
Core:
Mobile Switching
Server – Release 4
based on 2nd gen ATCA
ATCA2
14
Network Management
© Nokia Solutions and Networks 2014
GPRS network
Flexi radio
Microwave transmission
Renewal of GSM-R Radio Access Network RAN
•
First GSM-R systems were deployed starting 1998
•
Since then radio technology has improved significantly
•
Less power consumption, less footprint, improved functionality, better
maintainability,...
•
Several Railways are updating/planning to update the Radio Access Network
RAN, i.e. to renew the Base Station Subsystem BSS
15
© Nokia Solutions and Networks 2014
Nokia unique and modular BTS
> Unique all-purpose BTS built with modules
> An innovation reducing network cost significantly
> Extremely scalable configurations
> Fully integrated IP transport
> LTE support
> 200
Standard module
133 mm
Operating temperature:
-35°C to +50°C, temporarily +55°C
422-560 mm
447 mm
Weight approx. 15-25 kg
16
For internal use
customer
references
© Nokia Solutions and Networks 2014
More than 90% of the material inside
Flexi BTS can be recycled at end-of-life
GSM-R - Technology and Product Evolution supporting
highest Reliability and Safety Requirements
Agenda
Why GSM-R?
GSM-R Renewals and Improvements – core, radio, IP
ETCS over GPRS – packet switching and IP
GSM-R Interoperability/Compatibility Testing IOT
The path towards “Next Generation”
17
© Nokia Solutions and Networks 2014
17
ETCS over GPRS (EoG) – Packet Switching (1)
•
•
•
•
Ensure sufficient air interface capacity for ETCS L2/3 in hot spots…
…”side effect”: fast recovery of ETCS data exchange following disruption
Lab & Field tests were performed on NOKIA GSM-R network in Sweden already in
February 2010 – feasibility was proven
Load test with up to four ETCS users (up- and downlink) sharing one single time slot was
successfully performed using NOKIA GPRS equipment in Belgium in May 2010
Borlange
Swedish Test Train
Stockholm
Swedish Test Route
18
© Nokia Solutions and Networks 2014
ETCS over GPRS (EoG) – Packet Switching (2)
•
•
•
•
•
•
•
19
Major project 2011 – 2014 and co-financed with around 6 M€ by European Union
New Specifications - Euroradio, Quality of Service, Test
Engineering Requirements
Laboratory and Field tests in Sweden, France, UK and Denmark and involving several
GSM-R suppliers
Lab tests 10-14 March 2014 in Denmark using NOKIA GPRS infrastructure were
executed very successfully with up to 5 ETCS users sharing one time slot
Border Crossing procedure exemplified by Sweden-Denmark
Packet Flow Control (PFC) feature, which allows to “set priorities” for different
kinds of GPRS users, is included in NOKIA GPRS portfolio
© Nokia Solutions and Networks 2014
GSM-R - Technology and Product Evolution supporting
highest Reliability and Safety Requirements
Agenda
Why GSM-R?
GSM-R Renewals and Improvements – core, radio, IP
ETCS over GPRS – packet switching and IP
GSM-R Interoperability/Compatibility Testing IOT
The path towards “Next Generation”
20
© Nokia Solutions and Networks 2014
20
GSM-R Inter Operability Testing (IOT) 2014
co-financed by the European Commission
GSM-R
Network
GSM-R
Network
MSC/VLR/
HLR/…
BSS
BSS
MSC/VLR/
HLR/…
21
© Nokia Solutions and Networks 2014
GSM-R Inter Operability Testing (IOT) 2014
co-financed by the European Commission
CAB
radio
GSM-R Network
1.
MSC/VLR/HLR/…
BSS
2.
Train Controller
22
© Nokia Solutions and Networks 2014
GSM-R Inter Operability Testing (IOT) 2014
co-financed by the European Commission
GSM-R Suppliers participating in 2014 IOT campaign
GSM-R infrastructure
23
GSM-R mobile terminals
© Nokia Solutions and Networks 2014
GSM-R fixed dispatchers
GSM-R Inter Operability Testing (IOT) 2014
co-financed by the European Commission
EIRENE
5/13
EIRENE
6/14
EIRENE
7/15
Issued
2000
Issued
2003
Issued
2006
2002
Q2/ Q4 2004
Global IOT
Phase 1&2
IOT Phase 3 Initial &
Regression
>
>
>
>
>
Nortel and NSN NSS/ NSS & NSS/
BSS EIRENE 5/13
Static roaming
functionality
GSM services
Advanced Rail
services
24
>
>
Q1/ Q4 2005
Q1 2007
Global IOT & Field
Phase 4.1
NSN and Nortel - NSS/ NSS & >
NSS/ BSS
EIRENE
5/13
Inter PLMN connections tested
Additional features tested
Global IOT
Phase 4.2
Nortel BSS to NSN
NSS EIRENE 6/14
> Nortel NSS
to NSN BSS
6/14
EIRENE
Q1 2011
Global IOT
Phase 9.3
> KCC BSS
to NSN NSS
EIRENE 7/15
IOT Phase 3 extension
>
© Nokia Solutions and Networks 2014
EIRENE
7.3.0/15.3.0
Focus on additional features (late entry,
eMLPP, Call barring and Access Matrix, Class
of Registration, …)
Q2 2011
Q3 2011
EIRENE
7.4.0/15.4.0
2014
Global IOT Phase
Global IOT PhaseGlobal IOT
9.2
9.1
Phase X Specs
> GSM-R NSS/
> KCC NSS
> KCC NSS
to NSN BSS
EIRENE 7/15
to NSN EIRENE
7/15NSS
>NSS & NSS/ BSS
& E to E
>QoS
GSM-R - Technology and Product Evolution supporting
highest Reliability and Safety Requirements
Agenda
Why GSM-R?
GSM-R Renewals and Improvements – core, radio, IP
ETCS over GPRS – packet switching and IP
GSM-R Interoperability/Compatibility Testing IOT
The path towards “Next Generation”
25
© Nokia Solutions and Networks 2014
25
Why consider a Next Generation System?
26
•
•
•
•
GSM was specified in the 80’s …
…so soon reaching the mature age of 25 very well established…
…but not delivering the data capacity required by users today…
…and not using spectrum efficiently!
•
GSM is step by step in the coming decade(s) replaced by more modern 3G/4G
technology
© Nokia Solutions and Networks 2014
www.gsm-rail.com
26
Customers want LTE – and operators have started to deliver
Broadband – as fast as at
home and wherever I am
…now with doubled speed
HD-video streaming, best content on the
fastest and largest 4G network
Pictures from operator consumer webpages (July 2013)
27
For internal use
© Nokia Solutions and Networks 2014
…with premium voice quality
Smartphones need fast
networks everywhere…
LTE comes with latest smartphones
LTE offers many benefits & the bandwidth for new services
Lower cost for operators
Better performance & user experience
Cost per Mbyte
Throughput
100 Mbps
150ms
Latency
<50ms
>42 Mbps
10ms
<1 Mbit
GSM
3G
HSPA
HSPA evo
LTE
Scalable bandwidth / re-farming
28
For internal use
GSM
© Nokia Solutions and Networks 2014
HSPA+
LTE
GSM
HSPA+
LTE
Technology convergence
Optimized spectrum usage
900 / 1800
MHz
GSM
LTE
GSM
WiMAX
3G / HSPA
TD-SCDMA
CDMA
Tetra
LTE / LTEAdvanced
Why consider a Next Generation System?
29
•
•
•
•
GSM was specified in the 80’s …
…so soon reaching the mature age of 25 very well established…
…but not delivering the data capacity required by users today…
…and not using spectrum efficiently!
•
GSM is step by step in the coming decade(s) replaced by more modern 3G/4G
technology
•
We expect that GSM-R will be operated (and supported) until at least 2030…
•
…but to be prepared for the future it is anyway a well invested effort to seriously
assess the different alternatives for a “Next Generation System”
© Nokia Solutions and Networks 2014
www.gsm-rail.com
29
Why consider a Next Generation System?
2G – GSM, GPRS, EDGE
4G - LTE, LTE-A, … , 5G,…
～10 years
GSM-R
NG Specifications
UIC, ERA, GSM-R IG, UNISIG, 3GPP
R&D
Pilot, IOT
30
© Nokia Solutions and Networks 2014
NG
～10 years
30
www.gsm-rail.com
Next Generation NG Assumptions (1)
•
Today’s GSM-R functionality as specified in EIRENE…
•
•
•
•
•
•
…must be supported one-to-one by the NG system, since
•
•
•
31
Functional Addressing
Location Dependent Addressing
Group Calls (Railway Emergency Call, All Drivers in the Area, …)
Carrying Safety Critical data of ETCS levels 2 and 3
…
during a migration period lasting several years both systems will be in
simultaneous service!
a train driver moving between GSM-R and NG areas shall not have to
behave differently depending on location…
…but (at most) benefit from additional supporting services in NG areas!
© Nokia Solutions and Networks 2014
www.gsm-rail.com
31
Next Generation NG Assumptions (2)
•
Additional new data services utilising the capacity of modern
technology will however be part of NG, possible examples:
•
•
•
•
•
•
•
•
32
to transfer any relevant train data for maintenance and other purposes to
ground
to support energy efficient (green) train driving
to transfer recordings of on board supervision cameras to ground
to transfer detailed travel information to passengers
to support conductors with info and ticket sales
to transfer safety supporting images to train drivers (level crossings…)
…
Surplus capacity could possibly even be made available to
Passengers – hereby improving their Travel Experience
© Nokia Solutions and Networks 2014
www.gsm-rail.com
32
Main drivers for a Next Generation Railway Communication System
Broadband
Applications
How will railway systems be operated in 10 years?
• Increasing use of data apps and new operational services require efficient
networks
• LTE offers more than changing the radio interface
Data applications – from LOW to HIGH bandwidth
Today
33
For internal use
Security
solutions
ETCS
Passenger
counting
Passenger
information
Video
surveillance
Train
positioning
Fleet
management
Train diagnostic
monitoring
Online ticket
sales
Announcement
updates
Low bandwidth
(CSD, SMS, GPRS)
© Nokia Solutions and Networks 2014
High bandwidth
(LTE,…)
Next Generation
Railway Mobile
Next Generation NG Assumptions (3)
•
NG will be a Cellular Mobile Network (just like GSM-R)
•
•
•
NG will be an “application” on top of a regular Mobile Service
•
•
34
with radio base stations (cells) along the railway lines, in stations, shunting
yards
possibly supported by satellite based services for special needs
based on 3GPP services tailored for a much larger user community than only
Railways
possibly a variant of Mobile Professional Radio used by Public Safety (police,
fire brigades, …) and others (private and public users)
© Nokia Solutions and Networks 2014
www.gsm-rail.com
34
Next Generation NG Assumptions (4)
•
NG will be owned and operated by Railways
•
•
•
public networks will presumably not guarantee the required 7d/24h availability
public networks are subject to continuous change (feature content, radio design,
capacity enhancements,…) which harmonises poorly with Railway operation
NG could possibly reuse existing allocated GSM-R frequencies
•
873
sharing spectrum with GSM-R during migration
Uplink
880
E-GSM
915
918
GSM
E-GSM
Public Users
Railways
35
Downlink
925
960
GSM
Public Users
Railways
© Nokia Solutions and Networks 2014
www.gsm-rail.com
35
Safeguarding GSM-R Investments! (1)
• Onboard Cab radio will be maintained, only upgraded
•
•
•
•
Driver’s Interface will remain unchanged
Additional radio module supporting the new technology
Possibly also new roof top antenna and cabling
…
• Major parts of track side GSM-R network will be maintained
•
•
•
•
•
Base Station civil works, towers
Base Station transmission infrastructure
Core system civil works, sites
Most of Network Management , e.g. KPI supervision
…
• Fixed Dispatcher Network will be maintained, only upgraded
•
•
•
36
Human Machine Interface will remain unchanged in general…
…slight additions in the menu navigation supporting the new radio technology
Very limited effort for training of operator staff
© Nokia Solutions and Networks 2014
www.gsm-rail.com
36
Safeguarding GSM-R Investments! (2)
• Railway staff already very experienced operating a Mobile
Network
• In total a very substantial part of the GSM-R investment will
be reused!
37
© Nokia Solutions and Networks 2014
www.gsm-rail.com
37
New Professional Radio Standardization in 3GPP
Critical Communications (ref GSM-R Group Call functionality) currently in
3GPP work for inclusion in Release 12
•
•
•
Group Call System Enablers over LTE (GCSE_LTE)
ProSe
Mission Critical PTT over LTE (MCPTT)
•
This standardization is driven by Users and Suppliers of Public and
Professional Mobile Radio aiming at one Common, Efficient, Fully
Featured and User Friendly solution…
…aiming at many Users - potentially entire Public Safety Sector …
•
•
38
Interesting to follow progress with regards to a Next Generation
system following after GSM-R
© Nokia Solutions and Networks 2014
38
Today’s activities towards a Next Generation
•
GSM-R Core architecture Rel 4 is introduced
•
•
Stepwise introduction of IP …
…now available on several interfaces interconnecting GSM-R
subsystems, e.g. Train Controller system
•
ETCS over GPRS (that is over Packet Switching PS) is a stepping
stone for…
…much better utilisation of radio resources
…making ETCS bearer independent
•
•
39
© Nokia Solutions and Networks 2014
www.gsm-rail.com
39
GSM-R - Technology and Product Evolution supporting
highest Reliability and Safety Requirements
Agenda
Why GSM-R?
GSM-R Renewals and Improvements – core, radio, IP
ETCS over GPRS – packet switching and IP
GSM-R Interoperability/Compatibility Testing IOT
Wrap Up
40
© Nokia Solutions and Networks 2014
40
GSM-R from Nokia
The fast track to efficient railway communications
Experience obtained from 56 GSM-R projects,
including turnkey and network operations
Strong commitment to GSM-R with long-term
business and environmental vision
Best-in-class products, R&D, and
production facilities
Active participation in European and
international railway standardization
41
For internal use
© Nokia Solutions and Networks 2014
Number
Nu
1
1
“One-stop-shopping” with e2e
capability
Strategic cooperation with local partners for
necessary services and products
42
© Nokia Solutions and Networks 2014
ER-GSM: 3 MHz additional spectrum for GSM-R
•
Some Railways (Deutsche Bahn, …) consider this as one option to increase capacity
•
NOKIA very actively contributing to amending 3GPP specs for ER-GSM
•
Co-existence with public bands with coordinated and un-coordinated approaches
•
Class Mark enhancement
•
NOKIA, KCC and Ericsson as main players in GERAN of 3GPP in 2013 agreed
about the 3GPP specification amendments
•
NOKIA Flexi BSS prepared for ER-GSM
43
© Nokia Solutions and Networks 2014
ER-GSM: 3 MHz additional spectrum for GSM-R
Coordinated Approach: Power subject to ”negotiation”
873
Uplink
880
E-GSM
915
GSM
918
Downlink
925
E-GSM
Public Users
Railways
44
© Nokia Solutions and Networks 2014
960
GSM
Public Users
Railways
ER-GSM: 3 MHz additional spectrum for GSM-R
Un-coordinated Approach: Power following ”slope”
873
Uplink
880
E-GSM
915
GSM
918
Downlink
925
E-GSM
Public Users
918
Slope is
6 dB/MHz if neighbour is GSM
11 dB/MHz if neighbour is UTRA/E-UTRA
45
© Nokia Solutions and Networks 2014
GSM
Public Users
Railways
Railways
960
921
- ~ 40 dBm
EIRENE Roadmap 27 June 2014 (1)
EIRENE 7.3/15.3 current specification in EU,
published by ERA&UIC April 2012, approved by RISC on 6 June 2012, included in the TSI on 6 November
2012, includes less (MI), UIC’s 7.1/15.1, complete EDOR spec
Next release recommended by ERA in Dec 2013 is EIRENE 7.4/15.4…
…in parallel with an ETCS Maintenance Release
• Most updated specifications were finalised in April/May 2014
• ERA’s recommendation for GSM-R available on ERA web page
• Decided in RISC meeting on 12-13 June 2014
• Legal status through TSI update in autumn 2014 summer 2015!
46
© Nokia Solutions and Networks 2014
EIRENE Roadmap 27 June 2014 (2)
EIRENE 7.4/15.4 (ERA BL 0.4)
•
•
•
•
•
•
Core GeoRedundancy – Option
•
Editorial improvements, clarifications
•
Not yet 100% clarified exactly what will be contained – UIC, ERA and GSM-R IG not yet
fully aligned (BX meeting yesterday e.g)
47
Rel 4 allowed in addition to Rel 99 - Option
eREC - Option
Border Crossing
ER-GSM – mentioned
Interference, only 4 MHz (the current GSM-R band) Mandatory for Interoperability (MI)
also for Cab (in addition to EDOR) – will allow for external filters as planned in Sweden
© Nokia Solutions and Networks 2014
EIRENE Roadmap 27 June 2014 (3)
For Dec 2015 EIRENE 7.5/15.5 (BL 0.5) or 8/16 (BL 1.0) is planned
•
•
ETCS over GPRS
Shortened Voice interruption at Cell Reselection of VGCS listener (SI10bis) – based on
measurements
•
•
•
•
Voice QoS, set-up times, both e2e and network only – based on measurements
48
Interference, improved Cab and EDOR receiver specification
Interference, enhanced requirements on GSM-R RAN
Update of Subset 93 (ETCS QoS requirements on GSM-R) and corresponding
measurement specification O-2475
© Nokia Solutions and Networks 2014
EIRENE Roadmap 27 June 2014 (4)
For Dec 2015 EIRENE 7.5/15.5 (BL 0.5) or 8/16 (BL 1.0) is planned
•
•
From ERA, certain Railways and NOKIA point of view - after this EIRENE frozen
UIC however has invited to workshop on 20 November 2014 to discuss GSM
enhancements to improve air interface capacity and quality
•
…VAMOS, SAIC, NewTon, DARP
49
© Nokia Solutions and Networks 2014
Interference Solution for Co-existence with public 900
Reported and anticipated problems with E-GSM, 3rd (UMTS) and 4th (LTE)
generation mobile systems being deployed adjacent to GSM-R!
•
Industry (Sierrawireless ,Trio-Rail) has developed new radio modules for Cab/EDOR with
highly improved protection against disturbances
•
Industry (Siemens among many) has developed 4MHz band pass filters to be installed
between the roof top antenna and the Cab/EDOR (in Sweden such may be used)
The specification changes are likely to be
•
•
50
To solve intermodulation problem:
•
more robust Cab/EDOR radio module – ETSI TS almost finalised – EIRENE CR not
yet elaborated (candidate for UIC managed EIRENE Maintenance Release in 2015)
•
allowed to limit also Cab to GSM-R frequency (4MHz) – i.e. to use 4MHz band pass
filters – EIRENE CR agreed
To mitigate unwanted/spurious emissions: improved GSM-R coverage – to be discussed
within GSM-R IG aiming at joint position
© Nokia Solutions and Networks 2014
eREC –enhanced Railway Emergency Call
51
•
ProRail initiated eREC in 2004 to avoid operational losses
•
SNCF/RFF also pushes eREC … lab test alternatives in discussion
•
European Railway Agency ERA will accept eREC as non-MI
•
Available from NSN
© Nokia Solutions and Networks 2014
Voice QoS – duration of call set-ups and similar
52
•
Currently EIRENE states only end-to-end values (in seconds)
•
UIC QoS work group aims at splitting into one infra and one terminal part…
•
GSM-R IG submitted a statement ”will be complex and a cost driver” in
November 2012
•
Suggested test specification (O-2875) includes the split
•
Measurement of values and validation of suggested test method in NSN lab
currently in planning (with TEN 3rd call funding) …
•
…using NSN Flexi BSS
•
Unclear if also KCC will do a parallel test session
© Nokia Solutions and Networks 2014
Improved Downlink ReSelection - shortening long voice cut at cell
reselection
53
•
Will strongly improve the user experience of the Voice Group Call Service
(VGCS)
•
Seen as utterly important (even imperative for using VGCS) by some Users
•
UIC pushing - in general Railways positive
•
NSN was the Driver in 3GPP to specify the SI10bis solution (2006-2007)
•
Measurement of values in NSN lab currently in planning…
•
…using NSN Flexi BSS
•
Unclear if also KCC will do a parallel test session
© Nokia Solutions and Networks 2014
Access to the latest features and performance improvements
eREC –enhanced Railway Emergency Call:
1½ channel mode for Voice Group Call Service:
Targeted allocation
of emergency
calls to specific
trains
Comfortable and high-quality voice communication
among operational railway staff
GSM-R network
eREC
node
Talker 1
e.g. train
controller
Available
for EIRENE
7.4.0/15.4.0
ER-GSM:
enhanced EIRENE frequency allocation
-> 3 MHz additional spectrum for GSM-R
873
880
918
new
921
925
existing
GSM-R downlink
55
For internal use
Improved Cell Re-selection:
Voice break
existing
876
VGCS
Shorten voice break down to few 100ms
when moving from one radio cell to the next
GSM-R uplink
new
Talker 2
e.g. train
driver
Listeners
© Nokia Solutions and Networks 2014
old
new
Old communication systems: Expensive to maintain, not interoperable
Track
to train
radio
Shunting
radio
Paging
Automatic
train control
Tunnel
radio
Vehicle mounted
radio
Operation &
maintenance radio
56
For internal use
© Nokia Solutions and Networks 2014
GSM-Railway: One integrated and standardized solution
GSM-R
57
For internal use
© Nokia Solutions and Networks 2014