(P2-23) A Novel Seamless Vertical Handoff Solution

Abstract

In this work we propose a seamless vertical handoff solution. We realize the seamlessness by adding a virtualinterface module into current Linux kernel. Different from the mobile-IP based-vertical-handoff systems, there is no need of extra agents or handoff servers in our system. In the experiment, we show that the handoff latency is so short that it is unnoticeable to the applications. Rebuilding transport layer connections is also not required during the period of the handoff. Our system is simple and can be applied to current IP network. Therefore, it is instantly ready for real-world deployment.

Decentralized Handoffs in Heterogeneous Networks: A Kernel Module Approach

“…Future clientele devices tend to be equipped with multiple network interfaces. So, there is a need to switch between different network interfaces to achieve seamless mobility [7]. M obile devices that cater to one type of access technology have the ability to roam among networks of the same type are referred to as horizontal handoff.…”

“…On most of the devices today wired and wireless LAN cards have become basic components, apart from supporting other radio access technologies such as Bluetooth, GPRS etc [7]. If these devices are to connect to various networks and perform a continuous data transmission whatever location they roam to, while switching from one network to another, technique of vertical handoff is very much needed.…”