A Novel Mobile IP Protocol Supporting Roaming Subnet

Abstract

It supports only one mobile terminal to roam in wireless network using mobile IP technology. We extend one terminal to a small network, and propose "roaming subnet" to support network roaming while keeping data connection with huge network. In a roaming subnet, home agent, foreign agent and intra-domain routing agent cooperate instead of traditional MAC level device. Mobile node in subnet can go through multi-hops instead of one-hop of mobile IP. We propose a protocol for this kind of application and a demo system is developed to verify it. The test results illustrate it is fit for keeping high data transmission with rapid movement.