ISSN : 1796-2056
Volume : 1    Issue : 3    Date : July 2006

Operational Experiment of Seamless Handover of a Mobile Router using Multiple Care-of
Address Registration
Keiichi Shima, Yojiro Uo, Nobuo Ogashiwa, and Satoshi Uda
Page(s): 23-30
Full Text:
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NEMO Basic Support (NEMO BS) adds a mobility function to IPv6 routers, such a router is called as
a mobile router. The network behind the mobile router (mobile network) becomes logically static.
This function is considered useful when a network has a lot of nodes that do not have a mobility
function but move with the network. The typical usage of this technology is the network provided in a
transportation system like a bus or airplane. In the base specification of NEMO BS, a mobile router
can use one IPv6 address as its attachment point at one time. Therefore, the mobile router and its
mobile network will face service disruption of network connectivity while the mobile router is moving
from one network to other network. In this paper, we explain two operational experiments of network
mobility. One is an experiment using only the base NEMO BS function. The other is an experiment of
seamless handover using multiple network interfaces to solve the problem. In these experiments,
the mobile networks were actual conference networks which held a few hundred people. The result
shows that the multiple interfaces usage provides one-third to one-tenth of the packet loss rate
compared to the case that is not using the technology. Also most attendees of the conference did
not notice the movement, which means the technology can be used for the realistic solution for
the seamless handover.

Index Terms
Network Mobility, Multiple Interfaces, Seamless Handover, Real Network