Abstract
Today’s mobile devices mostly contain more than one wireless interface for Internet connection. Smartphones mostly have both LTE and Wi‐Fi for data communication through Internet. Although the availability of Wi‐Fi is incomparable to that of cellular network, its strength lies in the low cost and high data rate due to continuous PHY and MAC advancement of 802.11 protocol extensions. In this paper, we propose a device‐centric system that performs cost‐effective network connectivity to the mobile device by selectively activating Wi‐Fi communication according to the device mobility and corresponding history of Wi‐Fi usage. By analyzing the device mobility using attached sensors, the system selects appropriate Wi‐Fi that has been often used in that mobility state. The system was implemented in actual mobile devices that were used to several experiments we designed to prove high performance of the system.
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