Multicast receiver mobility over Mobile IP networks based on forwarding router discovery

Abstract

To support mobility over Mobile IP networks, the IETF proposed two schemes, namely bi-directional tunneling (MIP-BT) and remote subscription (MIP-RS). Although MIP-BT enables mobility by establishing bi-directional tunnel from home agent to care-of address, it suffers from redundant routing that causes bandwidth consumption and packet delivery delay. On the other hand, in MIP-RS, mobile node always re-subscribes to its interested multicast group when it enters into a foreign network. Although MIP-RS provides shortest multicast routing path, it suffers from out-of-synch problem. To cope with the problem, we propose new scheme that provides the shortest multicast routing path without out-of-synch problem, and that also minimizes the bandwidth consumption. We evaluate our proposed scheme in the viewpoint of band-width consumptions with various parameters and clarify the efficiency of our proposed scheme. © Springer-Verlag Berlin Heidelberg 2005.