A high-throughput routing for multiuser diversity multicast

In this paper, we introduce a new routing strategy that allows high-throughput and channel-aware multi-rate multicast in wireless networks. This new routing strategy, based on the so-called End-to-end Multicast Session Efficiency (EMSE), is founded on the multi-user diversity (MUD) and the wireless broadcast advantage (WBA) features. It aims at: i) joining users that provide the best-received multicast throughput, ii) guaranteeing the use of homogenous capacities, iii) considering the effect of the transmission/retransmission number needed to exploit the multi-rate diversity on the routing throughput and iv) constructing the multicast structure composed of paths that give the best end-to-end throughput. Compared to other routing strategies and multicast schemes, the new routing algorithms show considerable improvement in terms of the average throughput and an important reduction in the relays number needed to convey the multicast data.