The situations at home and abroad
　 It can't separate mobile IPv6 and IPv6. At present, the development of IPv6 is not in balance in the world: The development of Japan is best. Japanese NTT will dispose IPv6 in U.S.A, which makes it become the first provider who provides IPv6 services in public in the world. Japan has disposed IPv6 services in Japan and Europe. It is also the center of the IPv6 application. It takes 70% of the assigned addresses in Japan. American also take rapid development in this filed depending on the advantage that Internet is derived in America and lots of international organizations is also in America. As far as China is concerned, because of the seriously short of IP addresses, China is one of the nations who should develop IPv6 technology urgently. In the future years, the development center of IPv6 will shift and come into China, Jeff Doyle predicted, a famous expert on IPv6 solution in Juniper Corporation.
　 After making the drafts of mobile IPv6 in 1995, the IETF (Internet Engineer Task Force) has made a series of drafts on mobile IPv6. At present, Mobile IPv6 has already entered a fast-developing stage. This is exactly an opportunity that we catch up with and surpass the world level because it is a new thing for all of us.

Directions of our study
　 The directions of our study are mainly as follows:
　 1. Fast switching technique on mobile IPv6 (seamless switching and smooth switching).
　 2. Security authentication technique on mobile IPv6.
　 3. QoS technique on mobile IPv6.
　 4. VPN technique based on mobile IPv6.

Situation of our tasks
　 We have done research on this field for more than 3 years so that we have relatively deep understanding in mobile IPv6 technology. What we have done are as follows:
　 1. Having read a large amount of draft documentations and relevant thesis, has established the deep 　 theoretical foundation
　 2. Having read and modified codes of mobile IPv6.
　 3. Developing our own mobile IPv6 practical products.