Recommendation ITU-T L.1350 contains basic definitions of energy efficiency metric, to evaluate the energy efficiency of a base station site including the energy consumption for:
· The telecom equipment inside the base station site e.g. backhaul and base station equipment.
· The entire infrastructure, including cooling systems, monitoring systems (for power consumption, equipment running status, environment parameters, etc.), fire protection and lighting systems for all the sites.
· Energy losses due to AC/DC rectifiers, generator and cable losses.
The following energy factors will be considered for the evaluation:
· electric energy from a public grid
· electric energy generated by generator such as diesel generator for emergency or normal operation purposes
· renewable energy.
Measurement methodologies for the parameters considered in the metric proposed are contained in other ITU-T Recommendations of the same series.