Power efficiency in IEEE 802.11a WLAN with cross-layer adaptation

Author

Zhao, Jun ; Guo, Zihua ; Zhu, Wenwu

Author_Institution

Microsoft Res. Asia, Beijing, China

Volume

3

fYear

2003

fDate

11-15 May 2003

Firstpage

2030

Abstract

Power consumption is one of the most stringent bottlenecks in mobile devices. In this paper, we investigate the joint effect of MAC and PHY layers on power efficiency in IEEE 802.11a WLAN. Specifically, we study the link adaptation for a power efficient transmission by selecting a proper transmission mode and power level with the aid of our derived power efficiency model. This study addresses the fundamental impact of the CSMA MAC protocol on the power efficiency of IEEE 802.11a WLANs. Some implications for system design are also discussed. In particular, we show that the non-radio-transmission power plays an important role in the power optimization of IEEE 802.11a WLAN.

Keywords

access protocols; carrier sense multiple access; mobile radio; optimisation; wireless LAN; CSMA MAC protocol; IEEE 802.11a WLAN; MAC layers; PHY layers; carrier sense multiple access; cross-layer adaptation; link adaptation; media access control layer; mobile device; mode selection; nonradio-transmission power; power efficiency; power optimization; transmission mode; Bandwidth; Batteries; Bit rate; Energy consumption; Media Access Protocol; Modulation coding; Multiaccess communication; Physical layer; Power system modeling; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. ICC '03. IEEE International Conference on

Conference_Location

Anchorage, AK

Print_ISBN

0-7803-7802-4

Type

conf

DOI

10.1109/ICC.2003.1203960

Filename

1203960