Delay Constraint Multicast Routing for Wireless Ad Hoc Networks

In this paper, we discuss the issue of delay-throughput tradeoff from providing end-to-end delay guarantee multicast service in wireless ad hoc network. Efforts are made to develop a Delay Constraint Multicast (DCM) routing protocol, focused on constructing a delay based multicast tree, which is able to provide soft end-to-end delay guarantees for all multicast receivers. Forwarding decisions are made based on local access delay and QoS information from a source node, resulting in a high ratio of timely delivered packets. Based on simulation results, DCM is able to deliver data packets with average latency right below the delay constraint while keeping communication overhead at minimum.