A New Adaptive Discontinuous Reception (DRX) Model for Power Saving in LTE System

LTE that is a standard for wireless broadband communication for cell phones and information terminals, has incorporated Discontinuous Reception (DRX) power-saving strategy to enhance energy-saving at the user equipment (UE). But for the networks that have different channel quality, it is tough at all the time for fixed DRX parameters to gain the desirable achievement. To save energy, DRX model parameters need to be optimized efficiently for minimizing power consumption based on CQI (Channel Quality Indicator) reporting by UE and MCS (Modulation and Coding Scheme) assignments by eNodeB as networks channel quality are not equal. This research develops a new model based on CQI reporting that will reduce energy consumption by eliminating unnecessary wake-ups of UE named as CQI DRX. The optimization is done by configuring DRX parameters depending on MCS assignments by eNodeB. The simulation process is carried out using ns3 a discrete event network simulator as energy consumption can be decreased by approximately 17% compared with the traditional static DRX that is used in stable networks.