Affiliations: SAMSUNG SDS Co. Ltd., Principal Engineer Process
Technology R&D; Group Samsung SDS Tower(E), Seoul, Korea | College of Information and Communications Engineering,
Sungkyunkwan Univeristy, Suwon-si, Korea
Note: [] Corresponding author: Jongpil Jeong, College of Information and Communications Engineering, Sungkyunkwan Univeristy, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 440-746, Korea. E-mail: jpjeong@skku.edu
Abstract: With recent advancements in wireless communication technologies,
mobile multicasting is becoming important, in an effort to use network
resources more efficiently. In the past, when various mobile IP-based multicast
techniques were proposed, the focus was on the costs needed for network
delivery to provide multicast services, as well as on minimizing the multicast
handover delay. However, it is fundamentally difficult to resolve the problems
of handover delay and tunnel convergence for techniques using MIPv6 (Mobile
IPv6), a host-based mobility management protocol. To resolve these problems,
the network-based mobility management protocol PMIPv6 (Proxy Mobile IPv6) was
standardized. Although performance is improved in PMIPv6 over MIPv6, it still
suffers from problems of handover delay and tunnel convergence. To overcome
these limitations, a technique called LFH (Low-cost and Fast Handoff) is
proposed in this paper, for fast and low-cost mobility management with
multicasting support in PMIPv6 networks. To reduce the interactions between the
complex multicast routing protocol and multicast messages, a simplified proxy
method called MLD (Multicast Listener Discovery) is implemented and modified.
Furthermore, a TCR (Tunnel Combination and Reconstruction) algorithm was used
in the multicast handover procedure within the LMA (Local Mobility Anchor)
domain, as well as in the multicast handover procedure between domains, in
order to overcome the problem of tunnel convergence. It was found that,
compared to other types of multicast techniques, LFH reduces multicast delay,
and requires lower cost.
Keywords: PMIPv6, multicast, MLD, low-cost handoff, fast handoff
