0引言如今的时代是信息的时代,互联网已经深入到我们生活的方方面面。人们需要随时随地利用移动终端进行网络连接,所以对这方面的研究也成为当前众多热点之一。在移动网络中,移动终端的唯一标识是归属地址。当终端漫游的新的网络时会得到一个转交地址,移动终端再把转交地址通知给归属寄存器。发往移动终端的数据包首先被发送到归属网络,归属网络中的归属寄存器 0 Introduction Today’s era is the era of information, the Internet has deep into all aspects of our lives. People need the use of mobile terminals to connect to the Internet anytime, anywhere, so the research in this area has also become one of the many hot spots. In the mobile network, the unique identifier of the mobile terminal is the home address. When the terminal roams a new network will get a care-of address, the mobile terminal then care-of address to the home register. The data packets sent to the mobile terminal are first sent to the home network, the home register in the home network