Title :
On the User Performance of LTE UE Power Savings Schemes with Discontinuous Reception in LTE
Author :
Wigard, Jeroen ; Kolding, Troels ; Dalsgaard, Lars ; Coletti, Claudio
Author_Institution :
Nokia Siemens Networks, Res. Center Aalborg, Aalborg East, Denmark
Abstract :
The UTRAN long-term evolution (LTE) specifications provide flexible means to achieve micro-sleep operation for user equipment (UE) even though it is in active mode and running a service. By means of a discontinuous reception (DRX) framework, pauses in the transmission due to natural traffic characteristics or network prioritization can be utilized. The specifications give a number of options to optimize the performance. In this paper two of those possibilities are compared. Long DRX with the use of an inactivity timer is compared to the usage of short DRX on top of long DRX. The performance is evaluated in terms of user throughput, power consumption, and network performance, while using a realistic RF modem power consumption model for the UE. For bursty traffic, short DRX shows a gain of up to 100% over DRX with just an inactivity timer, when measuring throughput per power unit consumed in case of one or multiple users being present in the cell.
Keywords :
3G mobile communication; telecommunication traffic; LTE UE power saving schemes; RF modem power consumption model; UTRAN long-term evolution specifications; discontinuous reception; inactivity timer; network prioritization; traffic characteristics; user equipment; Downlink; Energy consumption; Modems; Power system modeling; Quality of service; Radio frequency; Telecommunication traffic; Throughput; Traffic control; Wireless networks;
Conference_Titel :
Communications Workshops, 2009. ICC Workshops 2009. IEEE International Conference on
Conference_Location :
Dresden
Print_ISBN :
978-1-4244-3437-4
DOI :
10.1109/ICCW.2009.5208042
