Motivation (cont.)
	• Previous work: studied performance of multicast and broadcast protocols in NS2, determined that broadcast protocols can support one-to-many and many-to-many communications well in a MANET – Choose BCAST as starting point, a protocol that utilizes 2-hop neighborhood information to dynamically prune re-broadcasts • However, even for “best” broadcast protocol, Packet Delivery Ratio (PDR) can be reduced when – Mobility increases – Number of multicast sender (i.e., traffic) increases