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Computer Science Colloquia

Wednesday, March 16, 2011
S.M. Shahriar Nirjon
Advisor: John Stankovic
Attending Faculty: Kamin Whitehouse

Olsson 228E, 16:00:00

A Master's Project Presentation
MultiNets: A System for Switching between Multiple Network Interfaces on Mobile Devices

ABSTRACT
We present MultiNets, a system which is capable of dynamically switching between wireless network interfaces on mobile devices. MultiNets is motivated by the need of smartphone platforms to save energy, offload data traffic, and achieve higher throughput. We describe the architecture of MultiNets and demonstrate the methodology to perform switching between wireless interfaces in Linux based mobile OSes such as Android. Our analysis on mobile data traces collected from real users shows that with dynamic switching we can save 27.4% energy, offload 79.82% data traffic, and achieve 7 times more throughput on average. We deploy MultiNets in a real world scenario and our experimental results show that it outperforms the state-of-the-art Android system in several aspects: it increases the energy saving by up to 33.75%, achieves near-optimal offloading and throughput, and substantially reduces TCP interruptions due to switching.