DocumentCode :
2329922
Title :
Power Savings and QoS Impact for VoIP Application with DRX/DTX Feature in LTE
Author :
Polignano, Michele ; Vinella, Dario ; Laselva, Daniela ; Wigard, Jeroen ; Sørensens, Troels B.
Author_Institution :
Aalborg Univ., Aalborg, Denmark
fYear :
2011
fDate :
15-18 May 2011
Firstpage :
1
Lastpage :
5
Abstract :
In the Long Term Evolution system Discontinuous Transmission and Reception (DRX/DTX) has been introduced to extend the terminal battery lifetime. In this paper, we study the energy-saving provided by this mechanism and the impact on the QoS performance of Voice over IP (VoIP) traffic under dynamic and semi persistent packet scheduling strategies. Simulations and analytical results show that the DRX/DTX scheme can reduce the terminal power consumption without compromising the required VoIP QoS in terms of maximum air-interface delay. However, it does not provide any further power savings if the terminal is asleep for a period longer than 20 ms. It is shown that the power savings are larger for semi persistent scheduling than for dynamic packet scheduling at the cost of a lower spectral efficiency.
Keywords :
Internet telephony; Long Term Evolution; energy conservation; power consumption; quality of service; radio reception; DRX; DTX; LTE; QoS; VoIP; Voice over IP; discontinuous reception; discontinuous transmission; dynamic packet scheduling; long term evolution; power consumption; power savings; terminal battery lifetime; Analytical models; Delay; Downlink; Dynamic scheduling; Power demand; Quality of service; Scheduling algorithm;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd
Conference_Location :
Budapest
ISSN :
1550-2252
Print_ISBN :
978-1-4244-8332-7
Type :
conf
DOI :
10.1109/VETECS.2011.5956309
Filename :
5956309
Link To Document :
بازگشت