Relayed Multicast Scheme in IEEE 802.11 Wireless LAN Systems

We propose a novel multicast scheme that can provide quality-of-service (QoS) to multicast service over IEEE 802.11 wireless LANs by utilizing MAC layer relay. We develop the distributed relay node selection algorithm and the relay channel selection algorithm. The effectiveness of proposed scheme is examined by simulation. Simulation results show that the proposed relayed multicast significantly improves throughput and delay performance.