Ubersleep: An Innovative Mechanism to Save Energy in IEEE 802.11 Based Wlans

S, Sudarshan and R, Prasad and A, Kumari and R, Bhatia and B R, Tamma (2014) Ubersleep: An Innovative Mechanism to Save Energy in IEEE 802.11 Based Wlans. In: IEEE CONECCT 2014 - 2014 IEEE International Conference on Electronics, Computing and Communication Technologies, 6-7 January 2014, IEEE CONECCT 2014; Bangalore; India. (Submitted)

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Abstract

Perpetually rising energy costs are forcing research communities to focus their efforts on a reduction of the global CO2 footprint, and since Information and Communication Technologies (ICT) account for a significant percentage of the overall global energy consumption, energy efficiency is becoming increasingly important in the operation of ICT infrastructure, especially in enterprise and data center networks. Simultaneously, the proliferation of devices such as smartphones and tablets, which have to use battery powered wireless radio adapters, and whose battery life is dependent on the power consumption of the radio adapters used for wireless communication indicates that efficient radio power saving strategies are needed to increase the battery life of such devices. This paper extends an earlier proposal by [1], and examines the performance of the same on IEEE 802.11n networks. It also extrapolates the results to estimate performance on 802.11ac WLANs, the planned successor to 802.11n WLAN in 5 GHz unlicensed band. The results indicate that this approach can be used to save over 59% of the RX energy (i.e., energy consumed by Wi-Fi radio while operating in receive mode) without any loss whatsoever in throughput unlike 802.11 power save mode and that this approach is completely backward compatible

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