Sunday, July 7, 2024

BT implements energy-saving 'Cell Sleep' at EE basestations

 BT Group has successfully implemented energy-saving 'cell sleep' technology across its EE mobile sites nationwide. This move follows successful trials conducted across the UK's home nations. The 'cell sleep' software reduces energy consumption by putting certain 4G LTE capacity carriers to sleep during predicted periods of low traffic, a prediction made possible through machine learning analysis of each site.

The system is designed to automatically wake up during busy periods and can respond swiftly to unexpected surges in demand, ensuring continuous service without interruptions. An even more efficient state, called 'deep sleep,' can be activated during extremely low demand periods, such as overnight. This dual functionality is provided by the RAN equipment suppliers at each EE site, utilizing BT Group's site data to inform the statistical algorithms that manage these energy-saving measures.

BT Group's Chief Networks Officer, Greg McCall, highlighted the significant energy savings potential across their networks, expecting the 'cell sleep' technology to save up to 2 KWh per site per day, amounting to 4.5 million KWh annually across EE’s network. This initiative aligns with BT Group's broader efforts to increase network energy efficiency, which is crucial as the company's networks account for 89% of its total energy consumption. These efforts are part of BT Group’s commitment to becoming a net-zero carbon emissions business by March 2031, complemented by the recent switch-off of its legacy 3G network and upgrades to more energy-efficient RAN equipment.

Key Points:

  • Nationwide Rollout: 'Cell sleep' technology implemented across all EE mobile sites.
  • Energy Efficiency: Expected savings of up to 2 KWh per site per day, totaling 4.5 million KWh annually.
  • Smart Activation: Technology wakes up automatically during busy periods and can handle unexpected demand surges.
  • Deep Sleep Mode: Further reduces power consumption during extremely low demand periods.
  • Net Zero Goal: Part of BT Group's strategy to achieve net-zero carbon emissions by March 2031.