icône fibre optique - Grolleau

Telecom & Data GSM-R / RRH

Grolleau is supporting the deployment of the SNCF’s (via Synerail) GSM-R network and is therefore participating in the modernisation of its overall communication system. 

  • A component of the European Rail Traffic Management System (ERTMS), 
  • Telecommunication standard for 20th European country (network opening, interoperability), 
  • Private mobile network infrastructure, RF wireless (European Train Control System (ETCS) media). 
Antenne GSM
Armoire GSM
Armoire GSM SCNF 2
Armoire GSM SCNF 3
Armoire GSM SCNF ouverte
Armoire GSM SCNF fermée
Armoire GSM ouverte

Technical specifications

GSM-R (Global System for Mobile Communication Railways)

  1. Wireless/radio transmission or COM reception:  
    DATA: Control of train position & speed, VOICE : Calls 
  2. GSM-R celle, radio BTS sites (cabinets, pylons…) : 
    15000 km of rails covered including 1000 sites (annex bay 2011-2017 Grolleau), 
  3. Data transport network:  
    the Network TRANSmission serving BTS to BTS (cells/sectors-plates) & towards the core network. TRANSport network via cooper radio, optical fibre. 
  4. Base station controller (BSC): 
    Concentrator role, traffic dispatcher within the plate (between BTS cells) & towards other plates. 
  5. Core network, NSS: 
    Databases with user identity & location, Network switch for COM routing  
  6. Instant COM delivery : 
    Incoming / Outgoing on fixed infrastructure (station, control centre, operation…) & towards BSC. 

Find out more

Annex bay (Generation 2018)

Functions

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Energy network connection:
Connection to the energy supplier's delivery point
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Transmission link connection:
Connection & hosting of transmission link equipment (SNCF wired, SDSL FO wired, RF),
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Power supply (normal, backup battery):
The GSM-R 6K BTS Kpasch KIT (DM & RRH modules), transmission and service equipment
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DM module integration:
Component of the 6K BITS GSM-R kit. Equipment managing COM between radio transmitters & GSM-R networks.

Main features

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Dimension (WxHxD):
2040 x 2037 x 722 mm
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Telecom format:
19''/30 U (500mm useful depth)
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Operating temperature:
-20°C à 45°C
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Protection rating:
IP55 (double skin)
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Electrical supply:
TGBT 230 Vac Class II with: - Source inverter (generator set) - Service: internal heating, site lighting, maintenance outlet
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Electrical distribution:
48 Volts Dc via Atelier Energy 2x3KWatts: - Flatpack 5U Eltek - Netsure 501 Emerson 230 Volts AC ripple via inverter: - 3 Backup battery branches from 105 to 180 Ah/branch

3 columns

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ENERGY + GSM-R 6K BTS KIT/DM module
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CUSTOMER EQUIPMENT + TRANS GSMR
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BACKUP BATTERY

RRH Bay

Functions

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Radio link connection to the mast/antennas:
Ensure radio link Incoming/Outgoing (RRH "amplifier module")
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RRH radio equipment integration:
Operating constraints of 24/7 access by a single person, not compatible with mast integration (night intervention safety),
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RRH module protection:
Restricted access to RF, FO straps.

Main features

check-list
Dimension (WxHxD):
700 x 2037 x 722 mm
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Operating temperature:
-20°C à 45°C
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Protection rating:
IP55 (double skin)
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Weight :
200 Kg - 2+2 max RRH of 40 Kg
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Electrical supply:
Coming from the annex bay 2018: - 230 Vac: internal lighting, maintenance socket - 48Vdc: RRH radio module
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Equipment Integration:
Kapsch RRH Radio (BTS Kit, etc.): - Connection to antennas by RF straps - Connection to DM module in annex bay by FO & Copper (A-Bis) - Integrated on site by Vinci Energie / Axians infrastructure teams

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