The Problem of High Packet Delivery Ratios
n Results published in literature:
Ø Multicast protocols perform poorly (packet delivery
ratio below 90%) as network topology changes more
often (nodes move with higher speed and/or pause less)
Ø Multicast protocols also often do not scale well with
number of multicast senders and/or number of multicast
receivers
Ø Broadcast protocols can be beneficial under high
mobility and/or large group sizes
Ø Quite a bit of work on efficient broadcast protocols,
rather than simplistic flooding approach, as
broadcasting control messages inherent part of many
routing protocols