1. GSM-R / Mobile coexistence National Cooperation/coordination Process
RSCOM – RISC meeting
France
GSM-R / Mobile coexistence
National Cooperation/coordination Process
July, 6th 2016

2. 01. GSM-R DEPLOYMENT AND COORDINATION PROCESSES
02. OVERVIEW OF THE SITUATION AS IN JULY 2015
03. PILOT GOVERNANCE & SCHEDULE
04. PREVENTIVE COORDINATION: AGREEMENTS BETWEEN PARTIES
05. CORRECTIVE COORDINATION: PROCESS & CASES
06. POC CONCLUSIONS
07. NEXT STEPS

3. ANFR a key role as Spectrum Manager
1. National stakeholders
Synerail : to roll out GSM R infrastructure along railway tracks
Railway : SNCF networks, SNCF services and others, National Safety Authority
4 Mobile Operators : Bouygues Telecom, Orange, SFR Numericable, Free Mobile
2 Ministries : Transport (Railways), Economy (Electronic Communications)
ARCEP : Electronic communications regulator (NRA)
ANFR a key role as Spectrum Manager
European level: to prepare and to defend national positions on spectrum issues
National Spectrum manager : to address the needs from various sectors
Neutrality : to ensure coexistence between all spectrum users
Certainty : legal framework in place to declare base stations in operation
Tools : National data bases on radio sites, coordination processes and software,
monitoring tools and staff

4. 1. GSM-R National Deployment
Network main lines equipped (15 000/ km)
Public-Private Partnership (SNCF-Réseau and Synerail) signed in 2010
Operate GSM-R Network until 2025
Pay charges

5. 1. GSM-R National Deployment (January 2016)

6. 1. GSM-R National Deployment (2018 Target)

7. 1. T4 Case and its outcomes
Line Characteristics

8. 1. T4 Case and its outcomes Tramway line (8km) operated since 2006
Line Characteristics
Tramway line (8km) operated since 2006
One of the first lines equipped with GSM-R in France
Traffic: 1train/6min/direction
GSM-R Network used for passengers information, operation and emergency power cut at level crossings
No issue until december 2013
Major GSM-R interferences: traffic interrupted during 1 month
ANFR investigations showed an excellent overall signal but important losses at given locations and more particularly at one level crossing.
Cause: Upgrade of surrounding mobile networks to UMTS 900 (3G) which brought about IM3
December 2013

9. 4 weeks of intense work between SNCF Réseau and mobile operators
1. T4 Case and its outcomes
Outcomes
4 weeks of intense work between SNCF Réseau and mobile operators
Given GSM-R deployment and mobile networks (3G/4G) upgradings
Given the potential multiplication of interferences
Given this type of situation already faced in other Member states
Given risks for railway safety
Given risks for the availability of the railway system
It has been decided to develop a coordination framework between SNCF Réseau and mobile operators coordinated by ANFR

10. 2. Overview of the situation as in July 2015
CONTEXT & STAKES
RECOMMANDATIONS
PRESCRIPTIONS
COORDINATION PILOT PROJECT
ADDITIONAL CONSIDERATIONS

11. ACTORS: ROLES & RESPONSIBILITIES
3. Pilot project : governance & schedule
Sponsor : Ministry in charge of digital economy & ministry in charge of transports
Project leader : ANFR
Steering comity (steerco):
Sponsors
ARCEP
TELCOs
Railway companies (SNCF-Réseau, COSEA, UTP)
National Safety Authority
ANFR
Project team
Telcos
SNCF-Réseau / COSEA
ACTORS: ROLES & RESPONSIBILITIES
Project kick-off: January, 20th 2015
Draft ECC report 229 as initial basis
A one year duration project involving significant workload and dedication from all group members
8 Steerco
18 project group meetings (preventive coordination)
12 project group meetings (corrective coordination)
Process assessment to be carried out by mid-July 2016
Agreed processes to be implemented by end of July 2016
Key MILESTONES

12. ! 4. Preventive coordination : agreements between parties
AGREEMENT ON COORDINATION ZONE
AGREEMENT ON DATA TO BE SHARED !
CAUTION
Coordination area !
AGREEMENT ON COORDINATION PROCESS
AGREEMENT ON RISK ASSESSMENT METHODOLOGY
(THRESHOLDS ADAPTED FROM ECC 229 REPORT)

13. AGREED EX POST COORDINATION PROCESS 2 PRACTICAL CASES ADDRESSED
5. Corrective coordination: process & cases
AGREED EX POST COORDINATION PROCESS
2 PRACTICAL CASES ADDRESSED

14. 6. Conclusions on the Pilot on Coordination/cooperation
EX ante Coordination process : to mitigate the risk of interference
Ex post
In case of identified interference, issue resolution process
Feasibility demonstrated
1st assessment of the magnitude of
GSM-R issues :
A manageable issue
1,1% Telco projects in the coordination zone submitted to effective coordination before ANFR agreement
Discrepancies according to 900 MHz sub-band
Adaptation to be implemented:
Coordination zone to consider
Process standardization (data format,…)
Process delays
Thresholds (3 frequencies IM3, …)
Significant set-up and implementation costs
Ready to be implemented
GSM-R network optimisation to be explored before triggering the issue resolution process
Key factors of success :
reactivity
mind-set & cooperation from all parties

15. 7. Next steps
The necessary upgrade of cab radio receivers (ETSI TS v1.3.1) or implementation of necessary filters (cab radio in place)
When ?
Various approaches at national level on the upgrade of cab radio receivers : is there a need for investigating a common approach?
As recommended by the current national pilot and the ECC report 229
To launch the agreed national coordination process to ensure coexistence (July 16)
If needed, to solve remaining critical coexistence issues
National process and various tools
Lessons learnt from our national situation
ECC report 229 : to consider additional use cases to be described (i.e Inter Mod 3 frequencies)
To share national best practices to solve remaining critical coexistence issues (ECO web site?)
France will contribute to the on going CEPT questionnaire on ECC reports 162 and 229
A mutual interest and a future “win-win” situation
Today’s 2G/3G and GSM-R coverage

16. GSM-R / 2G-3G coexistence (900 MHz band)
Context & stakes
GSM-R / 2G-3G coexistence (900 MHz band)
Encounter between 2 worlds: « Railcos » & « Telcos »
Dual stakes: security & traffic management (Railcos)/
customer experience (mutual interest Telcos/Railcos)
Magnitude of the issue unknown (French context)
No direct responsibility into question

17. In the short term, coordination procedures to be set up
Recommandations
In the medium term, cab-radio to be upgraded in accordance with the ETSI standard : TS v1.3.1
The relevant solution to address both safety & mobile customer experience
Hardships: various rail companies involved, projected timetable, founding operations , …
In the short term, coordination procedures to be set up
Preventive and corrective measures
to cope with present issues

18. Coordination procedures Principles Use of existing ANFR processes
Coordination pilot project
Coordination procedures Principles
Use of existing ANFR processes
Pilot
confirm coordination feasibility;
adapt tools;
test the procedures efficiency;
assess costs (« run » phase)
Pilot managed as a project
Transversal project group set-up : ANFR, ARCEP, Min transport, Railcos & Telcos
Project deadline to be taken into account
Periodic reporting issued to steerco (risks, progress)

19. Additional considerations
Short term coordination measures not to substitute for the comprehensive medium term technical solution provided by cab-radio upgrading:
clear timetable expected from rail companies to upgrade cab-radio
Coordination processes lifetime to be determined according to cab radio upgrading schedule
Cost of the coordination procedures to be compared to cab-radio upgrading costs
Complexity of the coordination (a field case may involve 2 or 3 Telcos and the railways company) : a key role for ANFR

20. Agreement on coordination process

21. Measures completed on railway tracks for tools calibration purpose
Agreement on data to be shared
Base stations technical characteristics (EIRP, tilt, antenna diagrams, …)
Railways vectors
Measures completed on railway tracks for tools calibration purpose
NDA between SNCF & Telcos, SNCF & ANFR

22. Agreement on coordination zone

23. Agreement on risk assessment methodology
Intermodulation threshold increases by 1 dB when GSM-R signal increases by 3 dB
Additional national Tests carried out to confirm thresholds conclusions as regard to cab-radios implemented on SNCF trains

24. Agreed ex post coordination process
A national process to address in a very short time frame critical situations (emergency process) or deadlock situation)

25. 2 Practical cases addressed
Initial assumptions on number of cases to investigated ( around 100) versus practical cases identified and addressed (2) to improve the coexistence in the others identified cases
GSM-R perturbation reported near Paris-La Villette (Rosa Parks RER station)
Inauguration of a new railway station North of Paris
GSM-R network recurrent loss reported
Emergency treatment through corrective coordination process
Prescription issued : GSM-R network optimization
GSM-R perturbation reported near Bordeaux
GSM-R network to be put in operation by September 2016
GSM-R network permanent loss reported on the tracks
Prescription issued: GSM-R network optimization associated to 2G/3G networks modification

26. Thank you for your attention