Roaming Real-Time Applications - Mobility Services in IPv6 Networks

Emerging mobility standards within the next generation Internet Protocol, IPv6, promise to continuously operate devices roaming between IP networks. Associated with the paradigm of ubiquitous computing and communication, network technology is on the spot to deliver voice and videoconferencing as a standard internet solution. However, current roaming procedures are too slow, to remain seamless for real-time applications. Multicast mobility still waits for a convincing design. This paper investigates the temporal behaviour of mobile IPv6 with dedicated focus on topological impacts. Extending the hierarchical mobile IPv6 approach we suggest protocol improvements for a continuous handover, which may serve bidirectional multicast communication, as well. Along this line a multicast mobility concept is introduced as a service for clients and sources, as they are of dedicated importance in multipoint conferencing applications. The mechanisms introduced do not rely on assumptions of any specific multicast routing protocol in use.Comment: 15 pages, 5 figure

Multicast Mobility in Mobile IP Version 6 (MIPv6) : Problem Statement and Brief Survey

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An algorithm for join/prune mechanisms for improving handoff using mobility prediction in wireless networks

In this paper, we provide a detailed description of an algorithm that implements join and prune mechanisms, which will help to build an optimal multicast tree with QoS requirements during handoff. An analysis is presented to show how mobility prediction can help in the selection of potential access routers (AR) with QoS requirements that affect multicast group size and bandwidth cost in the multicast tree. The proposed technique tries to minimise the number of multicast tree join and prune operations. We have examined the performance of this algorithm using simulations in various environments and obtained good performance results. Our results show that the expected multicast group increases linearly with the increase in the number of selected destination access routers (AR) for multicast during handoff. We observe that the expected number of joins and prunes from the multicast tree increases with group size. Thus, for an increased number of destinations, the estimated cost of the multicast tree in a cellular network also increases

Mesh based and Hybrid Multicast routing protocols for MANETs: Current State of the art

This paper discusses various multicast routing protocols which are proposed in the recent past each having its own unique characteristic, with a motive of providing a complete understanding of these multicast routing protocols and present the scope of future research in this field. Further, the paper specifically discusses the current development in the development of mesh based and hybrid multicasting routing protocols. The study of this paper addresses the solution of most difficult task in Multicast routing protocols for MANETs under host mobility which causes multi-hop routing which is even more severe with bandwidth limitations. The Multicast routing plays a substantial part in MANETs

Evaluation Comparison of Mesh-Based routing Protocols in MANET

A multicast routing protocol manages group membership and controls the path that multicast data takes over the network in mobile ad hoc network. This process is done through either tree-based or mesh-based protocols. The mesh-based protocols are more reliable and robust against the tree based protocols. One of the most used on-demand multicast routing protocol is ODMRP (On-Demand Routing Protocol). However, it has the significant overhead due to redundant data delivery group and path maintenance. This overhead has been eliminated through the forwarding node reduction and link break time prediction algorithm (FNRLP). This work aims to exhibit the performance characteristics of mesh-based on-demand multicast routing protocols ODMRP and ODMRP-FNRLP