Mobility

An Aggregate Network Abstraction for Mobile Devices

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Executive Summary

Mobile devices, as a norm, are equipped with multiple network interfaces, viz. cellular, Wi-Fi and Bluetooth, with Wi-Max networks on the horizon. The authors? measurement data of connectivity characteristics of Wi-Fi and cellular networks, along with other recently reported research lead one to make the following observations: there is an interesting fraction of times when the throughputs of these interfaces are comparable and aggregating them would achieve a sizeable speed-up as well as significant increase in absolute throughput, Wi-Fi coverage is spotty and applications would benefit from seamless shifting between Wi-Fi and the more ubiquitous cellular connectivity, and EDGE and even 3G speeds are likely to be insufficient for many applications. Regular contact-patterns among devices can be leveraged for collaborative bandwidth aggregation.

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