An UNA-based approach to support mobility in the Internet

Abstract

Mobile IP has been developed to give mobile nodes freedom to move to new locations away from home networks. However, Mobile IPv4 requires the implementation of address binding on all IPv4 hosts, i.e., modification, to prevent the long delay due to the triangular routing problem. The host modification is a huge hindrance to the deployment of mobility support. Meanwhile, a new scalable interoperability architecture called UNA (Universal Network Adaptation), which helps the Internet smoothly evolve to MTI (Multi-Tier Internet) or permits easy deployment of a new network technology, was presented. In this paper, we extend UNA, so that we can move the point of address binding from lPv4 hosts to UNA gateways. Therefore, mobility support with no triangular routing problem can be achieved in MTI, without host modification.