On-demand Multicast Routing Protocol with Local Repair and Quality of Service Support

In this paper we propose a mesh based" on demand" multicast routing protocol for Ad-Hoc networks with QoS (quality of service) and reliable multicast support. The proposed scheme has five key features; (a) it is based on the forwarding group concept (i.e., a subset of nodes is in charge of forwarding the multicast packets); (b) it dynamically refreshes the forwarding group members using a procedure similar to on demand routing;(c) it significantly reduces control overhead, and make the scalability of multicast routing protocol possible in mobile ad hoc networks by consolidation of control packets;(d) it supports QoS routing using good estimation of available and required bandwidth, and reserving required bandwidth on the end to end active routes in multicast mode;(e) it provides local recovery mechanism, which aims to reduce the control overhead and achieve fast recovery when route breakage happens.