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Nokia O2 Network Upgrades

Case Study:
Upgrading the O2 Network


Project Overview:
Mobile Network Operator, O2, is rolling out its 4G network and upgrading their existing 2G and 3G networks in the East of England. This also includes integration of Vodafone on to the site as part of the network sharing agreement, Project Beacon.


Designs originally done by other suppliers are verified and adopted by Principal Telecom, and once a contract sum is agreed then a Pre-Start meeting is held with all parties (including specialist suppliers) on site to determine the exact method and programme of works to complete the upgrade.


The site will need physical modification to allow for the new equipment that provides the new and shared technologies. This can include extending the site footprint, new plinths and ducting, new or additional interface steelwork, tower extensions, pole swaps and changes to the cable/feeder management routes. We also upgrade the electrical power and certify to 17th Edition standards.


The main part of the works is the rigging. Under minimal network outage conditions, the existing antennas and feeders are replaced and in some instances new additional antenna and feeder systems are required for the new technologies and increased coverage/ capacity. The site is brought back on air and a full system test is carried out including sweep and Passive Intermodulation (PIM) testing.


The site is then ready for the next phase which is the swap out and installation of the base station (BTS) equipment.


There is an initial programme of c.75 sites in the south east of England from south of the River Humber and east of the Midlands.


Key Facts:
Client: Nokia
Services covered: Design, Civil & Electrical Works, Logistics, Rigging
Summary of key works:


  • • Design of the site upgrade works
  • • Ground works, site modifications and interface steelwork
  • • Electrical power upgrades
  • • Delivery of materials to site and return removed equipment
  • • Installation of new/replacement antennas and feeder
  • • Full system testing (including Passive Intermodulation/PIM)
  • • Compile and submit handover documentation

Date: 2016 - ongoing