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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Mobile services:Sunrise SWAP
Rodrigo Sierra
IT/CS
CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Agenda
• CERN mobile services• Sunrise SWAP• Affected services• Sites• Planning
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
CERN Mobile services
• Mobile Services:– Single contract with our current Swiss operator (Sunrise)– GSM calls from Switzerland routed via the CERN telephone exchange– Voice and data services (GPRS/EDGE/UMTS)– Dedicated access to CERN’s Intranet– ~ 5700 mobiles
• Infrastructure:– 46 Sunrise sites at CERN– > 50 km of leaky feeder cable covering underground facilities– Repeating system to offer UMTS in the LHC
• Technologies:− GSM and UMTS (3G)− LTE (4G) in the future?
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Leaky feeder cable
CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Sunrise SWAP
• What?– Sunrise is replacing and upgrading their infrastructure
• Why?– New maintenance contract -> Huawei– Renewal of all equipment in Switzerland
• When?– Swiss-wide is on-going since several months– CERN will be swapped end of June
• How?– Base stations will be replaced one by one– Local service disruption (~ 1 hour)– No impact on end-users, only local coverage is affected
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
SWAP – How does it affect CERN?
• Renewal of the equipment:– More power efficient and compact
• 4 racks replaced by one in SD8 for example
• Renewal of the technologies:– Multi-technology equipment:
• 3G already pre-installed and 4G ready• No need of more racks to add new technologies
– UMTS for the underground facilities:• Ready for PS, SPS, LINAC4, AD, TI2, TI8 and CNGS• Deployment when the transmission is finished (2013)
• Maintenance:– LHC base stations intelligence deported to the surface
(only RF repeaters underground)– Sunrise won’t need to access the tunnels
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
SWAP - Affected services
• GSM/UMTS services:– Local disruption during the intervention– Between 30 minutes and 2 hours
• Underground facilities:– SPS & AD interventions on Saturday– LHC tunnel interventions are transparent– LHC caverns & lifts at 4am– PS complex intervention on Sunday– TI2 at 4am– TI8 and CNGS at 8am
• Safety:– TETRA (new radio network) and red phones not affected
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Sites
• LHC:– 8 sites on the surface covering the lifts and caverns– 16 sites in the REs covering the tunnel
• Transfer lines and CNGS:– 3 sites covering TI2, TI8 and CNGS
• SPS (8 sites)• PS complex• AD complex• LINAC4• Surface:
– Meyrin (2 sites)– Prevessin (2 sites)– SM18
• Planning discussed with the coordinators of the sites
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Planning - Helicopter
• Helicopter needed:– Building 60– Building 361 (PS complex)– SXU1 (half of the ATLAS cavern)– SZ33 (PZ33 lift - UJ33)
• Sunday 30th June during the day– VICs already approved– Sunday 7th July in case of bad weather
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Planning – LHC caverns
• ~ 1 or 2 hours interruption:– SD1 (ATLAS)
• 27th June at 4am
– SD2 (ALICE)• 27th June at 4am
– SD5 (CMS):• 26th June at 4am
– SD8 (LHCb)• 26th June at 4am
– SD4:• 27th June at 4am
– SD6:• 28th June at 4am
– SD7:• 28th June at 4am
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Planning – LHC tunnel
• GSM signal is redundant:– The lost of 1 RE doesn’t interrupt the service– Around 30 minutes intervention time per RE
• 24th June:– Sectors 1-2 & 2-3– Sectors 1-8 & 7-8
• 25th June:– Sectors 3-4 & 4-5– Sectors 5-6 & 6-7
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Planning – TIs & CNGS
• ~ ½ to 1 hour interruption– TI2 (surface building 3192)
• 28th June at 4am
– TI8 (TE80)• 28th June at 8am
– CNGS (ECO4)• 28th June at 8am
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Planning - SPS
• 22nd June (Saturday):– BA1– BA2– BA4
• 29th June (Saturday):– BA3– BA5– BA6– BA7– BA80
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Planning – Meyrin/Prevessin
• AD complex– 29th June (Saturday)
• LINAC4– 25th June at 11am
• Water tower– 24th June at 8am
• SM18– 26th June at 11am
• Building 866– 25th June at 8am
• Zone Nord– 26th June at 8am
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
Conclusions
• GSM service interventions 2nd half of June– Local coverage disruptions– Underground facilities planned outside working
hours
• How it affects CERN?– Equipment and technologies renewed– Possibility of adding data services in PS & SPS– Maintenance simplified
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CERN IT Department
CH-1211 Genève 23
Switzerlandwww.cern.ch/
it
15
Questions