Battery-aware power efficient downlink scheduling in the wireless LAN

Authors:
Sang-Wook Kwon;Dong-Ho Cho
Affiliations:
School of Electrical and Electronic Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea;School of Electrical and Electronic Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
Venue:
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Year:
2009

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Improving energy efficiency of centrally controlled wireless data networks

Wireless Networks

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Abstract

In the wireless LAN (WLAN), when a node transmits PS POLL packet to receive downlink packet from an access point during a beacon transmission interval, the transmission order of PS_POLL packet is determined competitively without any policy. This results in needless power exhaustion of nodes. Therefore, we propose a battery-aware power efficient downlink scheduling in the WLAN. The proposed scheme differentiates PS_POLL packet transmission according to remaining battery quantity. Simulation results show that the proposed scheme consumes the power of overall node uniformly and increases life time of node compared with conventional scheme.