Improved power-saving medium-access protocol for IEEE 802.11e QoS-enabled wireless networks
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AbstractThe performance of a new pointer-based medium-access control protocol that was designed to significantly improve the energy efficiency of user terminals in quality-of-service-enabled wireless local area networks was analysed. The new protocol, pointer- controlled slot allocation and resynchronisation protocol (PCSARe), is based on the hybrid coordination function-controlled channel access mode of the IEEE 802.11e standard. PCSARe reduces energy consumption by removing the need for power-saving stations to remain awake for channel listening. Discrete event network simulations were performed to compare the performance of PCSARe with the non-automatic power save delivery (APSD) and scheduled-APSD power- saving modes of IEEE 802.11e. The simulation results show a demonstrable improvement in energy efficiency without significant reduction in performance when using PCSARe.
CitationSafdar, G.A. and Scanlon, W.G. (2007) 'Improved power-saving medium-access protocol for IEEE 802.11e QoS-enabled wireless networks' IET Communications, 1(4), pp. 718-725.