Time-oriented care-of address for mobile IPv6 networks

Duplicate Address Detection (DAD) is a necessary process which is time-consumimg for ensuring the uniqueness of Care-of Address (CoA) when a mobile node (MN) moves from access medium to another. However, the duplicate CoA impacts the delays imposed by the DAD process. In this paper, we propose a Time-Oriented Care-of Address (TOCoA) generation scheme to reduce the probability of duplicate CoA. Analysis and simulation results revealed that when a MN enters a network that already contains 500 devices, with proposed approach, both the probability of duplicate CoA and the delay of DAD process can be reduced by more than 1011 times and 800ms respectively, as compared with FMIPv6 or the Temporary CoA scheme proposed by Lee.