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Multicast QoS Support in IEEE 802.11 WLANs

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3 Author(s)
Andrey Lyakhov ; Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia, ; Vladimir Vishnevsky ; Mikhail Yakimov

Existing IEEE 802.11 spec, provides no error recovery mechanism (ARQ) for multicast traffic. ARQ absence in wireless networks unreliable by their nature leads to frequent packet losses, which is inappropriate for most of multimedia applications. In the paper, we propose new reliable multicast mechanism supporting multimedia QoS (packet loss ratio, delay and throughput), in IEEE 802.11 Wireless local Area Networks (WLANs). This mechanism is based on the concept of multiple ACK-leaders, i.e. multicast recipients responsible for data packets acknowledging. We develop an analytical model of the mechanism and use the model to study and to optimize the mechanism.

Published in:

2007 IEEE International Conference on Mobile Adhoc and Sensor Systems

Date of Conference:

8-11 Oct. 2007