Delay versus energy consumption of the IEEE 802.16e sleep-mode mechanism

Author

Vuyst, S. ; Turck, Kurt ; Fiems, D. ; Wittevrongel, S. ; Bruneel, H.

Author_Institution

SMACS Res. Group, Ghent Univ., Ghent, Belgium

Volume

8

Issue

11

fYear

2009

fDate

11/1/2009 12:00:00 AM

Firstpage

5383

Lastpage

5387

Abstract

We propose a discrete-time queueing model for the evaluation of the IEEE 802.16e sleep-mode mechanism of power saving class (PSC) I in wireless access networks. Contrary to previous studies, we model the downlink traffic by means of a discrete batch Markov arrival process (D-BMAP) with N phases, which allows to take traffic correlation into account. The tradeoff between energy saving and increased packet delay is discussed. In many situations, the sleep-mode performance improves for heavily correlated traffic. Also, when compared to other strategies, the exponential sleep-period update strategy of PSC I may not always be the best.

Keywords

Markov processes; WiMax; energy conservation; queueing theory; radio access networks; telecommunication traffic; IEEE 802.16e sleep-mode mechanism; discrete batch Markov arrival process; discrete-time queueing model; energy consumption; energy saving; exponential sleep-period update strategy; heavily correlated traffic; increased packet delay; power saving class; wireless access networks; Access protocols; Delay; Downlink; Energy consumption; Media Access Protocol; Queueing analysis; Telecommunication traffic; Traffic control; WiMAX; Wireless networks; Discrete-time queueing model, sleep mode, IEEE 802.16e, analytic study.;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2009.080287

Filename

5336757