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LTE-M and NB-IoT require long battery lifetime to ensure IoT services and minimize maintenance costs in the future. This technical white paper describes the possible power saving methods that can be applied to LTE-M and NB-IoT devices.
- the fundamentals of discontinuous reception (DRX), which is a generic procedure for power saving in the mobile communications world
- the principle of extended discontinuous reception (eDRX) and how it differs from legacy DRX
- the key parameters of the power saving mode (PSM)
- other power saving mechanisms (RAI, EDT and WUS) introduced in 3GPP Rel. 14 and Rel. 15