A Diffserv Mutlicasting in Mobile IPv6 Networks

In this paper we propose an approach to establish a DiffServ-aware multicast tree in a mobile IPv6 network. First, we use a modified Dijkstra algorithm to compute the maximum bandwidth map (MBM) to all nodes. Then, a DiffServ-aware multicast tree can be constructed by referring to the MBM. Each core router in the established multicast tree must maintain a new quality of service (QoS) table in order to forward the received multicast packets to the mobile node (MN). Finally, when a MN moves to a new network, a tunnel must be established in order to satisfy the MN´s QoS. The simulation results have shown that the proposed approach has better performance, especially in the case where the traffic is high.