Title :
Traffic-Based DRX Cycles Adjustment Scheme for 3GPP LTE Systems
Author :
Yu, Yu-Ping ; Feng, Kai-Ten
Author_Institution :
Dept. of Electr. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
The 3GPP long term evolution (LTE) standard is developed to enhance mobile services from the former 3G systems. In order to prolong the battery life of mobile device, a novel discontinuous reception (DRX) scheme is specified in the standard to reduce the power consumption of a user equipment. In this paper, a traffic-based DRX cycles adjustment (TDCA) scheme is proposed to enhance the energy saving performance based on existing DRX operation. A partially observable Markov decision process (POMDP) is employed to conjecture the present traffic status. Optimal policy for the selection of DRX parameters can be obtained via the POMDP framework in the proposed TDCA scheme. Simulation results show that the TDCA scheme can enhance the energy saving efficiency while the quality-of-service constraint is still satisfied.
Keywords :
3G mobile communication; Long Term Evolution; Markov processes; decision theory; quality of service; telecommunication traffic; 3GPP LTE systems; POMDP framework; QoS; TDCA scheme; battery life; discontinuous reception scheme; energy saving efficiency enhancement; long term evolution standard; mobile device; mobile services; partially observable Markov decision process; power consumption reduction; quality-of-service constraint; traffic status; traffic-based DRX cycles adjustment scheme; Delay; Estimation; IEEE 802.16 Standards; Markov processes; Mobile communication; Monitoring;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th
Conference_Location :
Yokohama
Print_ISBN :
978-1-4673-0989-9
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2012.6240136
