MCoRe: an adaptive scheme for rerouting multicast connections in mobile ATM networks

In this paper we propose multicast connection rerouting (MCoRe), a novel sc heme for efficient multicasting in mobile asynchronous transfer mode (ATM) networks. We investigate and evaluate McoRe's performance in mobile ATM net works in the presence of mobile source fandlor receivers. In the past, mult icasting from and to mobile hosts in mobile ATM networks has not received m uch attention from. researchers. MCoRe is based on active network (AN) tech nologies, where the computation required for rerouting connections is perfo rmed at switches. Due to intra-network processing, MCoRe is efficient, requ ires minimal buffer requirements, has low handoff latency and high reuse, a nd incurs low signaling overheads. Apart from that, MCoRe preserves cell or dering, prevents cell duplication and minimizes cell loss during source or receiver migration. We show how shortest path tree adapts to source migrati on without incurring high signaling overheads. With MCoRe, source migration is transparent to the multicast group members and does not entail reconstr uction of existing multicast tree. We also show how receiver migration is a chieved and how cell ordering is preserved, when the receiver rejoins the m ulticast session. (C) 2002 Elsevier Science B.V. All rights reserved.