Fast Tree Join for Seamless Multicast Handover in FMIPv6-based Mobile Networks
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초록
This paper proposes a fast tree join scheme to provide seamless multicast handover in the mobile networks using the Fast Mobile IPv6 (FMIPv6). In the existing FMIPv6-based multicast handover schemes, the bi-directional tunnelling or the remote subscription is employed with the packet buffering at the new access router (AR). In general, the remote subscription approach is preferred to the bi-directional tunnelling, since in the remote subscription scheme we can exploit an optimized multicast path from a multicast source to many mobile receivers. However, in the remote subscription scheme, if the tree joining operation takes a long time, a significant amount of data packets will be buffered at the new AR, and thus it may result in the buffering overhead that may induce the buffer overflow and packet losses. In this paper, we propose a fast join to multicast tree so as to reduce the handover delay and the associated buffering overhead. In the proposed scheme, the new AR will join the multicast tree as soon as the associated handover event is detected. This ensures that the new multicast data packets can arrive at the new AR as fast as possible, which is helpful to reduce the packet buffering overhead as well as the handover delay. From the ns-2 simulations, it is shown that the proposed scheme can give better performance than the existing FMIPv6-based multicast handover schemes in terms of handover delay and buffering overhead
Abstract
This paper proposes a fast tree join scheme to provide seamless multicast handover in the mobile networks using the Fast Mobile IPv6 (FMIPv6). In the existing FMIPv6-based multicast handover schemes, the bi-directional tunnelling or the remote subscription is employed with the packet buffering at the new access router (AR). In general, the remote subscription approach is preferred to the bi-directional tunnelling, since in the remote subscription scheme we can exploit an optimized multicast path from a multicast source to many mobile receivers. However, in the remote subscription scheme, if the tree joining operation takes a long time, a significant amount of data packets will be buffered at the new AR, and thus it may result in the buffering overhead that may induce the buffer overflow and packet losses. In this paper, we propose a fast join to multicast tree so as to reduce the handover delay and the associated buffering overhead. In the proposed scheme, the new AR will join the multicast tree as soon as the associated handover event is detected. This ensures that the new multicast data packets can arrive at the new AR as fast as possible, which is helpful to reduce the packet buffering overhead as well as the handover delay. From the ns-2 simulations, it is shown that the proposed scheme can give better performance than the existing FMIPv6-based multicast handover schemes in terms of handover delay and buffering overhead
참고문헌 (17)
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- D. Johnson, "Mobility Support in IPv6", IETF RFC 3775, ~ (2004)
- R. Koodli, "Mobile IPv6 Fast Handovers", IETF RFC 5268, ~ (2008)
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