A power management scheme for the IEEE 802.11 based WLANs

Author

Lei, Hongyan ; Nilsson, Arne A.

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA

fYear

2005

fDate

7-9 April 2005

Firstpage

123

Lastpage

127

Abstract

Energy efficiency is an important aspect in wireless networks. We investigate the power management in the IEEE 802.11 and propose an enhanced power management scheme for the infrastructure mode network to improve energy efficiency. In our scheme, we set up multiple queues in an AP (Access Point) buffer, one queue for each station. The AP schedules the transmission sequence of buffered packets by piggybacking a bit map in TIM (Traffic Indication Map) message or data packets. Also, we propose to use the Queue-by-Queue algorithm to schedule the traffic in the AP. Our proposed power management scheme improves energy efficiency without degrading the response time of the system. Our simulation results are in good agreement with the analysis.

Keywords

computer network management; queueing theory; scheduling; telecommunication traffic; wireless LAN; IEEE 802.11; LAN; TIM; access point buffer; energy efficiency; packet transmission sequence; power management; queue-by-queue algorithm; scheduling; traffic indication map; wireless local area network; Analytical models; Degradation; Delay; Energy efficiency; Energy management; Power system management; Scheduling algorithm; Telecommunication traffic; Traffic control; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Performance, Computing, and Communications Conference, 2005. IPCCC 2005. 24th IEEE International

ISSN

1097-2641

Print_ISBN

0-7803-8991-3

Type

conf

DOI

10.1109/PCCC.2005.1460531

Filename

1460531