2. Underground mobile communications at CERN
Stefano Agosta
CERN IT/Communication Systems
29/06/2016
underground mobile communications at CERN

3. underground mobile communications at CERN
CERN needs
Services
Voice and data for :
Standard machines operation
Train Inspection Monorail (Radio Protection surveys)
Temperature and humidity sensors
Remote experts consultancy
29/06/2016
underground mobile communications at CERN

4. underground mobile communications at CERN
CERN needs
Target
Ionizing radiations
Gas release risk
Strict access constraints
29/06/2016
underground mobile communications at CERN

5. underground mobile communications at CERN
Available options
Widely deployed in residential and office areas
802.11ac wave 2 offers 3.5 Gbps
Access Points (AP) cover small areas (few meters)
29/06/2016
underground mobile communications at CERN

6. underground mobile communications at CERN
Adopted for offices
Not suitable in the underground
Ionizing radiations
Tunnel lengths (27 Km for LHC, 7 Km for SPS)
Temporary VDSL during LongShutdown1
10 Mbps, 275 APs in LHC tunnel
29/06/2016
underground mobile communications at CERN

7. underground mobile communications at CERN
Available options
mobile networks
2G voice
3G voice, medium throughput data (10/2 Mbps)
4G high throughput data (20/20 Mbps)
800/900/1800 MHz
29/06/2016
underground mobile communications at CERN

8. underground mobile communications at CERN
Mobile CERN
2G/3G available on surface + all tunnels
4G available on surface + all tunnels except LHC
LHC: available in 8 access pits + pilot in LHC2 arc. Complete deployment by 2016
…but reliability depends on Swisscom
29/06/2016
underground mobile communications at CERN

9. Mobile networks @ CERN * TN access is subject to IT security approval
CERN APN
CERN
Intranet
GPN/TN*
CERN Swisscom
Swisscom APN
Internet
(Swisscom)
* TN access is subject to IT security approval
29/06/2016
underground mobile communications at CERN

10. underground mobile communications at CERN
Thank you!
Questions?
29/06/2016
underground mobile communications at CERN