An improved handoff algorithm for using mobile IPv6 in wireless environment with overlapping areas

The contents of router advertisement messages are used in traditional handoff algorithm of mobile IPv6, with increased overhead in result. Moreover, ping-pong registrations are ever-present in wireless environment, especially in micro-cell areas. Ping-pong registrations will lead to instability of routing path and some unnecessary sending of mobility management messages. In this paper, a novel handoff algorithm is proposed to resolve ping-pong registration and improve route stability by using parameters and timer. The experiment of TCP throughput shows that the new scheme achieves substantial performance improvements.