Wireless Multicast Scheduling with Packet Loss and Delay Constraints

Wireless multicast can exploit broadcast nature of wireless communication. It is sufficient to transmit information only once to reach a group of users. But some users may fail to receive it due to channel fading etc. Thus, we have to find a proper threshold of scheduling and retransmit in order to reduce the packet loss. In this paper, the multicast scheduling problem with packet loss and delay constraints is studied. We investigate the relationship between delay and packet loss in multicast. And then, a scalable quality of service (QoS) multicast scheduling algorithm is given which achieves high system throughput with a scalable packet loss and delay. Finally, simulation results are presented to validate our theoretical claims.