Sustainable development is a long-term commitment in which all of us should take part. As part of sustainable development, people's fight against global warming should be without respite. Telecoms activities have a limited impact on environment: in 2007, the total footprint of the Information and Communication Technologies (ICT ) sector was about 2% of the estimated total emissions from human activity and telecoms are only a part of ICT which represents no more than 25% of these 2%. Nevertheless, most mobile network operators aim at reducing their greenhouse emissions, by several means such as limiting their networks' energy consumption. In new generation Radio Access Networks such as LTE, Energy Savings Management(ESM) function takes place especially when mobile network operators want e.g. to reduce Tx power, switch off/on cell, etc. based on measurements made in the network having shown that there is no need to maintain active the full set of Network Elements (NEs) capabilities.

In the context of 3GPP Self-Organizing Networks (SON), this study investigates about Energy Savings Management in LTE / SAE networks, with the objective to contribute to the protection of our environment and the environment of future generations. One is forced to admit that, in addition, network energy consumption reduction will enable mobile network operators to save their OPEX. The present document covers:

• Motivations of mobile network operators for the introduction of energy savings control mechanisms
• Analysis of possible mechanisms for Energy Savings Management via OAM
• Usage of existing IRPs to be used for the purpose of Energy Savings Management
• Identification of new IRP to be potentially defined
• Conclusions
  • Recommendations on Energy Savings Management
  • Identification of items for standardization as a result of this study