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

2

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

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Questions