Using SDN and Slicing for Data Offloading over Heterogeneous Networks Supporting non-3GPP Access
; Silva, R.
; Santos, D.
Using SDN and Slicing for Data Offloading over Heterogeneous Networks Supporting non-3GPP Access, Proc IEEE Annual International Symposium on Personal Indoor and Mobile Radio Communications PIMRC, Bologna, Italy, Vol. , pp. - , September, 2018.
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The foreseen exploding number of devices connected to the mobile network has been pushing operators to look for mechanisms to transparently offload their data. However, such procedures need to consider the different demands from users' traffic and involved access networks. Towards that end, Network Slicing has been proposing a logical partition of the network to better serve different verticals requirements, while providing isolation, achieved by using Software Defined Networking (SDN) and Network Function Virtualisation (NFV) mechanisms. In this paper, we explore the realization of a mobile traffic offloading framework that is able to dynamically instantiate a non-3GPP slice and use SDN mechanisms to seamlessly handover existing flows into the new connection point. For this, we virtualized both the mobile Core Network components as well as the User Equipment, allowing the mobility procedure to be handled in the cloud and become transparent to the physical endpoints. A prototype of our proposal was deployed in a physical testbed, and evaluated in a mobile video offloading scenario where the operator strategically deploys Wi-Fi access points around the city, with results showing that the user is able to continuously visualize the video while switching access technology.