Link-adaptation and Transmit Power Control for Unicast and Multicast in IEEE 802.11a/h/e WLANs

Authors:
António Grilo;Mário Nunes
Affiliations:
-;-
Venue:
LCN '03 Proceedings of the 28th Annual IEEE International Conference on Local Computer Networks
Year:
2003

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Abstract

This paper proposes a mechanism to combine link-adaptationand transmit power control (TPC) in IEEE802.11a WLANs. The link-adaptation and TPCalgorithms try to maximize the goodput of the WLAN,while minimizing transmit power. The algorithm runs atthe sender, but it relies on feedback from the receiver.The latter notifies the sender about the Signal-to-Interference-plus-Noise-Ratio experienced in previous transmissions, allowing a prediction of the channelstatus. An extension of the algorithm for multicast is alsopresented. The implementation of the proposedmechanism in IEEE 802.11a/h/e WLANs is discussed andits performance evaluated.