Multicast Routing in MANET using Multiple reliable Rings backbone

In this paper, we propose Multicast Routing scheme in MANET using Multiple relaible Rings backbone (MRMR) that constructs the boundary of MANET with the help of a convex hull algorithm. Multiple rings are constructed at an appropriate distance between the centroid of convex hull and the boundary. Mesh of multicast routes are established by a path that comprises of following segments: a source and its nearest ring node, sources nearest ring node to destination's nearest ring node and destination's nearest ring node to destination. Multicast routes are set up to recover routes against link failures, node failures and mobility patterns with local patch-up of failed links. MRMR outprforms in terms of control overheads, packet delivery ratio and packet delivery latency as compared to an adaptive backbone (ADB) based multicast routing for MANETs.