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

fYear

2012

fDate

6-9 May 2012

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th

Conference_Location

Yokohama

ISSN

1550-2252

Print_ISBN

978-1-4673-0989-9

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2012.6240136

Filename

6240136