Handling a Device Changing from 3G to Wi-Fi Without Breaking Established Connections

摘要

The vertical handover is the ability for a device, such as a smartphone, to change between cellular data and Wireless LANs without losing any established connections. Previous approaches rely on tunneling to achieve this. This research aims to demonstrate a new approach to the problem, without tunneling, using a new intermediate layer 4 protocol running on top of TCP. The newly developed concept was tested through three scenarios that proved the mechanism works.