Rickard Cöster

Service aware adaptive DRX scheme

Discontinuous Reception (DRX) in Long Term Evolution (LTE) is used to reduce the energy consumption when there is no data transfer for a given user. Current DRX works on a per-UE basis but works with fixed DRX. That is, DRX does not take into account that different services and different terminals have different requirements on Quality of Experience (QoE). We propose an efficient adaptive DRX method that can provide battery saving without degrading QoE of the services. This method utilizes service and terminal knowledge provided by Deep Packet Inspection (DPI) mechanism and modifies the DRX settings adaptively on the fly. This unique work analyses anonymous traffic data from an operational mobile broadband network and emulates the effects of various DRX settings upon this live traffic data. Live traffic has larger variance in the timescale of DRX than it is assumed by models used in state-of-the-art DRX schemes. Thus the proposed method outperforms existing solutions and get closer to the theoretically ideal case.